SV175K20 [BOURNS]
Special Medium Voltage Varistors;
| 型号： | SV175K20 |
| 厂家： | 
BOURNS ELECTRONIC SOLUTIONS |
| 描述： | Special Medium Voltage Varistors |
| 文件： | 总19页 (文件大小：1522K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Features
n Formerly a
product
n +85 °C Continuous operating temperature
n Low clamping voltage
n Available with straight or crimped leads
n Available in tape and reel packaging for
automatic pick-and-place
n Six model sizes equivalent to standard
disc varistors
n Smaller nominal dimensions than disc
varistors
n Broad range of current and energy handling
capabilities
SV550 K 20
n RoHS compliant*
SV Series - Special Medium Voltage Varistors
General Information
Agency Recognition
The SV series is a series of lead style epoxy coated square or rectangular shaped
varistors with an AC operating voltage ranging from 60 V to 550 V. This series offers both
standard and custom options.
Standard
UL 1449
File Number
E313168**
**Not all rated voltages are UL recognized;
check the file for details.
The standard offering consists of square shaped varistors with extremely high current
and energy capabilities and a low clamping voltage, providing an increased level of
protection for the transients expected in telecommunication and AC power networks.
Compared to electrically equivalent disc varistors, SV varistors are produced with smaller
nominal dimensions.
Varistor Symbol
In addition to the standard offering, customers are offered the option to design their
own customized varistor to suit their specific application needs. Parameters free to be
chosen are: non-standard DC/AC operating voltage, leakage current, clamping voltage,
maximum surge current, energy absorption level, maximum dissipation power as well
as shape - the dimensions being the function of required electrical parameters and
vice-versa.
U
Summary of Custom Varistor Options
Index
Features...................................................... 1
General Information .................................... 1
Varistor Symbol........................................... 1
Summary of Custom Varistor Options ........ 1
Absolute Maximum Ratings........................ 2
Device Ratings.........................................2-4
Product Dimensions.................................5-7
n DC operating voltage range (V ): 85 V to 745 V (up to 1300 V for customized
products)
dc
n AC operating voltage range (V ): 60 V to 550 V (up to 1000 V for customized
rms
products)
n Six standard sizes available; other cutomized sizes available upon request
n Broad range of current and energy handling capabilities
n +85 °C Continuous operating temperature
Full Custom Parameter Designed
Medium Voltage Varistors ........................... 8
n Available electrical parameter options: AC/DC operating voltage, leakage current,
clamping voltage, maximum surge current, energy absorption level, maximum
dissipation power and threshold voltage temperature coefficient
General Technical Data............................... 8
How to Order............................................... 8
Typical Part Marking ................................... 8
Pulse Rating Curves .............................. 9-11
Packaging Drawings ................................. 12
Packaging Specifications ....................13-14
n Available in tape and reel packaging for automatic pick-and-place
n Model SVxxxK20 with I
= 1 x 15 kA @ 8/20 µs is available upon request
= 1x 20 kA @ 8/20 µs is available upon request
max
max
n Model SVxxxK23 with I
Assembly / Soldering
Recommendations for Through-Hole
Components.............................................. 15
Reliability Testing Procedures..............16-17
Terminology............................................... 18
Legal Disclaimer........................................ 19
Asia-Pacific: Tel: +886-2 2562-4117 • Email: asiacus@bourns.com
EMEA: Tel: +36 88 885 877 • Email: eurocus@bourns.com
The Americas: Tel: +1-951 781-5500 • Email: americus@bourns.com
www.bourns.com
WARNING Cancer and Reproductive Harm - www.P65Warnings.ca.gov
*RoHS Directive 2015/863, Mar 31, 2015 and Annex.
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
SV Series - Special Medium Voltage Varistors
Absolute Maximum Ratings
Custom Designed
Types
Parameter
Standard Types
Units
Units
Continuous:
Steady State Applied Voltage
DC Voltage Range (V
)
85 to 745
60 to 550
V
V
85 to 1300
60 to 1000
V
V
dc
AC Voltage Range (V
)
rms
Transient:
Peak Single Pulse Surge Current, 8/20 µs Waveform (I
2
)
600 to 15,000
4 to 815
A
J
> 5500
> 400
A/cm
J/cm
°C
max
)
2
Single Pulse Surge Energy, 10/1000 µs Waveform (W
Operating Ambient Temperature
Storage Temperature Range
Threshold Voltage Temperature Coefficient
Insulation Resistance
max
-40 to +85
-40 to +125
< +0.05
> 1
°C
°C
-40 to +125
-40 to +125
< +0.05
> 1
°C
%/°C
GW
kV
%/°C
GW
kV
Isolation Voltage Capability
> 2.5
> 2.5
Response Time
< 25
ns
< 2.5
µs
Climatic Category
40 / 85 / 56
40 / 125 / 56
* Valid for epoxy coated components
Device Ratings
V
W
P
max.
I
max*
C Typ.
@ 1 kHz
n
max
V
V
V
I
c
rms
dc
c
@ 1 mA
10/1000 µs
8/20 µs
Model
V
V
V
V
A
5
J
4
W
0.1
0.25
0.4
0.6
1
A
pF
SV 60 K 5
60
60
85
100
100
100
100
100
120
120
120
120
120
150
150
150
150
150
180
180
180
180
180
155v
155
155
155
155
190
190
190
190
190
240
240
240
240
240
290
290
290
290
290
600
370
SV 60 K 7
85
10
25
50
100
5
9
1750
3500
8000
12000
600
900
SV 60 K 10
SV 60 K 14
SV 60 K 20
SV 75 K 5
60
85
20
42
89
5
1380
2300
3400
300
60
85
60
85
75
100
100
100
100
100
125
125
125
125
125
150
150
150
150
150
0.1
0.25
0.4
0.6
1
SV 75 K 7
75
10
25
50
100
5
11
26
51
101
7
1750
3500
8000
12000
600
720
SV 75 K 10
SV 75 K 14
SV 75 K 20
SV 95 K 5
75
1080
1850
3100
240
75
75
95
0.1
0.25
0.4
0.6
1
SV 95 K 7
95
10
25
50
100
5
14
31
64
133
8
1750
3500
8000
12000
600
580
SV 95 K 10
SV 95 K 14
SV 95 K 20
SV 115 K 5
SV 115 K 7
SV 115 K 10
SV 115 K 14
SV 115 K 20
95
870
95
1480
2700
200
95
115
115
115
115
115
0.1
0.25
0.4
0.6
1
10
25
50
100
16
37
78
147
1750
3500
8000
12000
480
750
1230
2200
Model SVxxxK 20 with I
Model SVxxxK 23 with I
= 1 x 15 kA @ 8/20 µs available upon request.
= 1 x 20 kA @ 8/20 µs available upon request.
Continued on Next Page
max
max
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
SV Series - Special Medium Voltage Varistors
Device Ratings (Continued)
V
W
P
max.
I
max*
C Typ.
@ 1 kHz
n
max
V
V
V
I
c
rms
dc
c
@ 1 mA
10/1000 µs
8/20 µs
Model
V
V
V
V
A
5
J
W
0.1
0.25
0.4
0.6
1
A
pF
SV 130 K 5
130
130
130
130
130
130
140
140
140
140
140
140
150
150
150
150
150
150
175
175
175
175
175
175
230
230
230
230
230
230
250
250
250
250
250
250
170
170
170
170
170
170
180
180
180
180
180
180
200
200
200
200
200
200
225
225
225
225
225
225
300
300
300
300
300
300
320
320
320
320
320
320
205
205
205
205
205
205
220
220
220
220
220
220
240
240
240
240
240
240
270
270
270
270
270
270
360
360
360
360
360
360
390
390
390
390
390
390
320
320
320
320
320
320
340
340
340
340
340
340
360
360
360
360
360
360
420
420
420
420
420
420
550
550
550
550
550
550
590
590
590
590
590
590
9
600
180
SV 130 K 7
SV 130 K 10
SV 130 K 14
SV 130 K 20
SV 130 K 23
SV 140 K 5
SV 140 K 7
SV 140 K 10
SV 140 K 14
SV 140 K 20
SV 140 K 23
SV 150 K 5
SV 150 K 7
SV 150 K 10
SV 150 K 14
SV 150 K 20
SV 150 K 23
SV 175 K 5
SV 175 K 7
SV 175 K 10
SV 175 K 14
SV 175 K 20
SV 175 K 23
SV 230 K 5
SV 230 K 7
SV 230 K 10
SV 230 K 14
SV 230 K 20
SV 230 K 23
SV 250 K 5
SV 250 K 7
SV 250 K 10
SV 250 K 14
SV 250 K 20
SV 250 K 23
10
25
50
100
100
5
19
1750
3500
8000
12000
15000
600
430
42
670
85
1100
2150
3390
170
177
222
9
1
0.1
0.25
0.4
0.6
1
10
25
50
100
100
5
22
1750
3500
8000
12000
15000
600
400
46
620
94
1020
1900
3340
160
196
247
11
1
0.1
0.25
0.4
0.6
1
10
25
50
100
100
5
23
1750
3500
8000
12000
15000
600
380
51
590
101
213
270
11
690
1740
3050
140
1
0.1
0.25
0.4
0.6
1
10
25
50
100
100
5
26
1750
3500
8000
12000
15000
600
330
58
500
119
241
305
16
830
1630
2870
110
1
0.1
0.25
0.4
0.6
1
10
25
50
100
100
5
35
1750
3500
8000
12000
15000
600
250
78
400
157
322
407
17
650
1220
2020
100
1
0.1
0.25
0.4
0.6
1
10
25
50
100
100
38
1750
3500
8000
12000
15000
240
85
370
169
345
437
600
1130
1980
1
Model SVxxxK 20 with I
Model SVxxxK 23 with I
= 1 x 15 kA @ 8/20 µs available upon request.
= 1 x 20 kA @ 8/20 µs available upon request.
Continued on Next Page
max
max
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
SV Series - Special Medium Voltage Varistors
Device Ratings (Continued)
V
W
P
max.
I
max*
C Typ.
@ 1 kHz
n
max
V
V
V
I
c
rms
dc
c
@ 1 mA
10/1000 µs
8/20 µs
Model
V
V
V
V
A
J
W
0.1
0.25
0.4
0.6
1
A
pF
90
SV 275 K 5
275
275
275
275
275
275
300
300
300
300
300
320
320
320
320
385
385
385
385
420
420
420
420
460
460
460
460
510
510
510
510
550
550
550
550
350
350
350
350
350
350
385
385
385
385
385
420
420
420
420
505
505
505
505
560
560
560
560
615
615
615
615
670
670
670
670
745
745
745
745
430
430
430
430
430
430
470
470
470
470
470
510
510
510
510
620
620
620
620
680
680
680
680
750
750
750
750
820
820
820
820
910
910
910
910
680
680
5
20
600
SV 275 K 7
10
44
1750
3500
8000
12000
15000
1750
3500
8000
12000
15000
3500
8000
12000
15000
3500
8000
12000
15000
3500
8000
12000
15000
3500
8000
12000
15000
3500
8000
12000
15000
3500
8000
12000
15000
220
350
550
1030
1800
200
320
510
940
1650
300
480
860
1520
270
410
710
1250
240
380
680
1200
230
350
620
1080
210
330
570
1000
200
310
510
900
SV 275 K 10
SV 275 K 14
SV 275 K 20
SV 275 K 23
SV 300 K 7
680
25
97
680
50
187
380
481
46
680
100
100
10
680
1
700
0.25
0.4
0.6
1
SV 300 K 10
SV 300 K 14
SV 300 K 20
SV 300 K 23
SV 320 K 10
SV 320 K 14
SV 320 K 20
SV 320 K 23
SV 385 K 10
SV 385 K 14
SV 385 K 20
SV 385 K 23
SV 420 K 10
SV 420 K 14
SV 420 K 20
SV 420 K 23
SV 460 K 10
SV 460 K 14
SV 460 K 20
SV 460 K 23
SV 510 K 10
SV 510 K 14
SV 510 K 20
SV 510 K 23
SV 550 K 10
SV 550 K 14
SV 550 K 20
SV 550 K 23
700
25
102
211
437
554
144
230
485
611
116
241
495
624
121
253
523
670
132
275
572
728
144
284
598
750
168
330
644
815
700
50
700
100
100
25
700
1
760
0.4
0.6
1
760
50
760
100
100
25
760
1
900
0.4
0.6
1
900
50
900
100
100
25
900
1
980
0.4
0.6
1
980
50
980
100
100
25
980
1
1080
1080
1080
1080
1200
1200
1200
1200
1350
1350
1350
1350
0.4
0.6
1
50
100
100
25
1
0.4
0.6
1
50
100
100
25
1
0.4
0.6
1
50
100
100
1
Model SVxxxK 20 with I
Model SVxxxK 23 with I
= 1 x 15 kA @ 8/20 µs available upon request.
= 1 x 20 kA @ 8/20 µs available upon request.
max
max
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
SV Series - Special Medium Voltage Varistors
Product Dimensions
Dimension
D
t
Model
D (Max.)
t (Max.)
R
d
h (Max.)
a
7
2.5
(.098)
5
0.6
(.024)
9.5
(.374)
1.1
(.043)
SV 60 K 5
(.276)
(.197)
9
3.5
(.482)
5
0.6
(.024)
11.5
(.453)
1.1
(.043)
SV 60 K 7
(.354)
(.197)
h
12
4.1
7.5
0.8
15
1.4
SV 60 K 10
SV 60 K 14
SV 60 K 20
SV 75 K 5
(.472)
(.161)
(.295)
(.031)
(.591)
(.055)
16
(.630)
4.2
(.165)
7.5
(.295)
0.8
(.031)
19
(.748)
1.5
(.059)
22.5
(.886)
4.5
(.177)
10
(.394)
0.8
(.031)
26
(1.024)
1.5
(.059)
7
3.6
(.142)
5
0.6
(.024)
9.5
(.374)
1.2
(.047)
3.0
(.118)
MAX.
(.276)
(.197)
9
3.6
(.142)
5
0.6
(.024)
11.5
(.453)
1.2
(.047)
SV 75 K 7
(.354)
(.197)
25.0
(.984)
MIN.
12
(.472)
4.2
(.165)
7.5
(.295)
0.8
(.031)
15
(.591)
1.5
(.059)
SV 75 K 10
SV 75 K 14
SV 75 K 20
SV 95 K 5
16
(.630)
4.2
(.165)
7.5
(.295)
0.8
(.031)
19
(.748)
1.5
(.059)
22.5
(.886)
4.5
(.181)
10
(.394)
0.8
(.031)
26
(1.024)
1.5
(.059)
7
3.8
(.150)
5
0.6
(.024)
9.5
(.374)
1.4
(.055)
(.276)
(.197)
9
3.8
(.150)
5
0.6
(.024)
11.5
(.453)
1.4
(.055)
SV 95 K 7
(.354)
(.197)
R
d
12
(.472)
4.3
(.169)
7.5
(.295)
0.8
(.031)
15
(.591)
1.7
(.067)
SV 95 K 10
SV 95 K 14
SV 95 K 20
SV 115 K 5
SV 115 K 7
SV 115 K 10
SV 115 K 14
SV 115 K 20
SV 130 K 5
SV 130 K 7
SV 130 K 10
SV 130 K 14
SV 130 K 20
SV 130 K 23
SV 140 K 5
SV 140 K 7
SV 140 K 10
SV 140 K 14
a
16
(.630)
4.3
(.169)
7.5
(.295)
0.8
(.031)
19
(.748)
1.7
(.067)
22.5
(.886)
4.6
(.181)
10
(.394)
0.8
(.031)
26
(1.024)
1.7
(.067)
MM
(INCHES)
DIMENSIONS:
7
4.0
(.157)
5
0.6
(.024)
9.5
(.374)
1.6
(.063)
(.276)
(.197)
9
4.0
(.157)
5
0.6
(.024)
11.5
(.453)
1.6
(.063)
(.354)
(.197)
12
(.472)
4.3
(.169)
7.5
(.295)
0.8
(.031)
15
(.591)
1.9
(.075)
16
(.630)
4.4
(.173)
7.5
(.295)
0.8
(.031)
19
(.748)
1.9
(.075)
22.5
(.886)
4.8
(.189)
10
(.394)
0.8
(.031)
26
(1.024)
1.9
(.075)
7
4.0
(.157)
5
0.6
(.024)
9.5
(.374)
1.8
(.071)
(.276)
(.197)
9
4.0
(.157)
5
0.6
(.024)
11.5
(.453)
1.8
(.071)
(.354)
(.197)
12
(.472)
4.5
(.177)
7.5
(.295)
0.8
(.031)
15
(.591)
2.0
(.079)
16
(.630)
4.6
(.181)
7.5
(.295)
0.8
(.031)
19
(.748)
2.0
(.079)
22.5
(.886)
5.0
(.197)
10
(.394)
1
26
(1.024)
2.2
(.087)
(.039)
25
(.984)
5.0
(.197)
10
(.394)
1
27
(1.063)
2.2
(.087)
(.039)
7
4.1
(.161)
5
0.6
(.024)
9.5
(.374)
1.9
(.075)
(.276)
(.197)
9
4.1
(.161)
5
0.6
(.024)
11.5
(.453)
1.9
(.075)
(.354)
(.197)
12
(.472)
4.6
(.181)
7.5
(.295)
0.8
(.031)
15
(.591)
2.1
(.083)
16
(.630)
4.7
(.185)
7.5
(.295)
0.8
(.031)
19
(.748)
2.1
(.083)
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
SV Series - Special Medium Voltage Varistors
Product Dimensions (Continued)
Dimension
D
t
Model
D (Max.)
t (Max.)
R
d
h (Max.)
a
22.5
(.886)
5.4
(.213)
10
(.394)
1
26
(1.024)
2.3
(.091)
SV 140 K 20
SV 140 K 23
SV 150 K 5
SV 150 K 7
SV 150 K 10
SV 150 K 14
SV 150 K 20
SV 150 K 23
SV 175 K 5
SV 175 K 7
SV 175 K 10
SV 175 K 14
SV 175 K 20
SV 175 K 23
SV 230 K 5
SV 230 K 7
SV 230 K 10
SV 230 K 14
SV 230 K 20
SV 230 K 23
SV 250 K 5
SV 250 K 7
SV 250 K 10
SV 250 K 14
SV 250 K 20
SV 250 K 23
SV 275 K 5
SV 275 K 7
SV 275 K 10
SV 275 K 14
(.039)
25
(.984)
5.4
(.213)
10
(.394)
1
27
(1.063)
2.3
(.091)
(.039)
h
7
4.3
(.169)
5
0.6
(.024)
9.5
(.374)
2.0
(.079)
(.276)
(.197)
9
4.3
(.169)
5
0.6
(.024)
11.5
(.453)
2.0
(.079)
(.354)
(.197)
12
(.472)
4.8
(.189)
7.5
(.295)
0.8
(.031)
15
(.591)
2.2
(.087)
16
(.630)
4.8
(.189)
7.5
(.295)
0.8
(.031)
19
(.748)
2.2
(.087)
3.0
(.118)
MAX.
22.5
(.886)
5.6
(.220)
10
(.394)
1
26
(1.024)
2.4
(.094)
(.039)
25.0
(.984)
MIN.
25
(.984)
5.6
(.220)
10
(.394)
1
27
(1.063)
2.4
(.094)
(.039)
7
4.8
(.189)
5
0.6
(.024)
9.5
(.374)
2.1
(.083)
(.276)
(.197)
9
4.8
(.189)
5
0.6
(.024)
11.5
(.453)
2.1
(.083)
(.354)
(.197)
12
(.472)
5.0
(.197)
7.5
(.295)
0.8
(.031)
15
(.591)
2.3
(.091)
16
(.630)
5.0
(.197)
7.5
(.295)
0.8
(.031)
19
(.748)
2.3
(.091)
R
d
22.5
(.886)
5.8
(.228)
10
(.394)
1
26
(1.024)
2.5
(.098)
a
(.039)
25
(.984)
5.8
(.228)
10
(.394)
1
27
(1.063)
2.5
(.098)
(.039)
MM
(INCHES)
DIMENSIONS:
7
4.8
(.189)
5
0.6
(.024)
9.5
(.374)
2.6
(.102)
(.276)
(.197)
9
4.8
(.189)
5
0.6
(.024)
11.5
(.453)
2.6
(.102)
(.354)
(.197)
12
(.472)
5.4
(.213)
7.5
(.295)
0.8
(.031)
15
(.591)
2.8
(.110)
16
(.630)
5.5
(.217)
7.5
(.295)
0.8
(.031)
19
(.748)
2.8
(.110)
22.5
(.886)
5.9
(.232)
10
(.394)
1
26
(1.024)
3.0
(.118)
(.039)
25
(.984)
5.9
(.232)
10
(.394)
1
27
(1.063)
3.0
(.118)
(.039)
7
5.0
(.197)
5
0.6
(.024)
9.5
(.374)
2.8
(.110)
(.276)
(.197)
9
5.0
(.197)
5
0.6
(.024)
11.5
(.453)
2.8
(.110)
(.354)
(.197)
12
(.472)
5.6
(.220)
7.5
(.295)
0.8
(.031)
15
(.591)
3.0
(.118)
16
(.630)
5.7
(.224)
7.5
(.295)
0.8
(.031)
19
(.748)
3.0
(.118)
22.5
(.886)
6.1
(.240)
10
(.394)
1
26
(1.024)
3.2
(.126)
(.039)
25
(.984)
6.1
(.240)
10
(.394)
1
27
(1.063)
3.2
(.126)
(.039)
7
5.6
(.220)
5
0.6
(.024)
9.5
(.374)
3.0
(.118)
(.276)
(.197)
9
5.6
(.220)
5
0.6
(.024)
11.5
(.453)
3.0
(.118)
(.354)
(.197)
12
(.472)
6.0
(.236)
7.5
(.295)
0.8
(.031)
15
(.591)
3.2
(.126)
16
(.630)
6.0
(.236)
7.5
(.295)
0.8
(.031)
19
(.748)
3.2
(.126)
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
SV Series - Special Medium Voltage Varistors
Product Dimensions (Continued)
Dimension
D
t
Model
D (Max.)
t (Max.)
R
d
h (Max.)
a
22.5
(.886)
6.3
(.248)
10
(.394)
1
26
(1.024)
3.4
(.134)
SV 275 K 20
SV 275 K 23
SV 300 K 7
(.039)
25
(.984)
6.3
(.248)
10
(.394)
1
27
(1.063)
3.4
(.134)
(.039)
h
7
5.8
(.228)
5
0.6
(.024)
11.5
(.453)
3.2
(.126)
(.276)
(.197)
12
(.472)
6.1
(.240)
7.5
(.295)
0.8
(.031)
15
(.591)
3.4
(.134)
SV 300 K 10
SV 300 K 14
SV 300 K 20
SV 300 K 23
SV 320 K 10
SV 320 K 14
SV 320 K 20
SV 320 K 23
SV 385 K 10
SV 385 K 14
SV 385 K 20
SV 385 K 23
SV 420 K 10
SV 420 K 14
SV 420 K 20
SV 420 K 23
SV 460 K 10
SV 460 K 14
SV 460 K 20
SV 460 K 23
SV 510 K 10
SV 510 K 14
SV 510 K 20
SV 510 K 23
SV 550 K 10
SV 550 K 14
SV 550 K 20
SV 550 K 23
16
(.630)
6.1
(.240)
7.5
(.295)
0.8
(.031)
19
(.748)
3.4
(.134)
22.5
(.886)
6.6
(.260)
10
(.394)
1
27
(1.063)
3.6
(.141)
3.0
(.118)
MAX.
(.039)
25
(.984)
6.6
(.260)
10
(.394)
1
29
(1.142)
3.6
(.141)
(.039)
25.0
(.984)
MIN.
12
(.472)
6.5
(.256)
7.5
(.295)
0.8
(.031)
15
(.591)
3.6
(.141)
16
(.630)
6.8
(.268)
7.5
(.295)
0.8
(.031)
19
(.748)
3.6
(.141)
22.5
(.886)
6.8
(.268)
10
(.394)
1
27
(1.063)
3.8
(.150)
(.039)
25
(.984)
6.8
(.268)
10
(.394)
1
29
(1.142)
3.8
(.150)
(.039)
12
(.472)
6.9
(.272)
7.5
(.295)
0.8
(.031)
15
(.591)
4.2
(.165)
R
d
16
(.630)
6.9
(.272)
7.5
(.295)
0.8
(.031)
19
(.748)
4.2
(.165)
a
22.5
(.886)
7.5
(.295)
10
(.394)
1
27
(1.063)
4.4
(.173)
(.039)
MM
(INCHES)
DIMENSIONS:
25
(.984)
7.5
(.295)
10
(.394)
1
29
(1.142)
4.4
(.173)
(.039)
12
(.472)
7.3
(.287)
7.5
(.295)
0.8
(.031)
15
(.591)
4.4
(.173)
16
(.630)
7.4
(.291)
7.5
(.295)
0.8
(.031)
19
(.748)
4.4
(.173)
22.5
(.886)
7.8
(.307)
10
(.394)
1
27
(1.063)
4.6
(.181)
(.039)
25
(.984)
7.8
(.307)
10
(.394)
1
29
(1.142)
4.6
(.181)
(.039)
12
(.472)
7.8
(.307)
7.5
(.295)
0.8
(.031)
15
(.591)
4.8
(.189)
16
(.630)
7.8
(.307)
7.5
(.295)
0.8
(.031)
19
(.748)
4.8
(.189)
22.5
(.886)
8.2
(.323)
10
(.394)
1
27
(1.063)
5.0
(.197)
(.039)
25
(.984)
8.2
(.323)
10
(.394)
1
29
(1.142)
5.0
(.197)
(.039)
12
(.472)
8.2
(.323)
7.5
(.295)
0.8
(.031)
15
(.591)
5.1
(.201)
16
(.630)
8.2
(.323)
7.5
(.295)
0.8
(.031)
19
(.748)
5.1
(.201)
22.5
(.886)
8.7
(.343)
10
(.394)
1
27
(1.063)
5.3
(.209)
(.039)
25
(.984)
8.7
(.343)
10
(.394)
1
29
(1.142)
5.3
(.209)
(.039)
12
(.472)
8.8
(.346)
7.5
(.295)
0.8
(.031)
15
(.591)
5.7
(.224)
16
(.630)
8.8
(.346)
7.5
(.295)
0.8
(.031)
19
(.748)
5.7
(.224)
22.5
(.886)
9.2
(.362)
10
(.394)
1
27
(1.063)
5.8
(.228)
(.039)
25
(.984)
9.2
(.362)
10
(.394)
1
29
(1.142)
5.8
(.228)
(.039)
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
SV Series - Special Medium Voltage Varistors
Full Custom Parameter Designed Medium Voltage Varistors
How to Order
SV250K20BL1YY
The SV series of full custom parameter designed varistors consists of square and
rectangular shaped varistors, available either as epoxy coated lead style components or
as metalized pellets.
Series Designator
SV = SV Series
Max. Continuous Operating
Voltage (V
The customer can specify the varistor electrical properties and set the limits of size
parameters in accordance with the General Technical Data, as provided below. The
customer can also choose to have standard electrical parameters in a non-standard
varistor shape and size to best fit the available housing. The customer has our full
engineering support to help realize his specific protection requirement.
)
rms
V
Tolerance
K = ±10 % (Standard)
n
J = ±5 % (Available on Request)
Model Size
5 = 5 mm
14 = 14 mm
20 = 20 mm
23 = 23 mm
7 = 7 mm
10 = 10 mm
General Technical Data
Packaging
Electrical Parameters
Varistor Threshold Voltage (V ) Range
Value
Units
R = Reel (Standard)*
B = Bulk (Standard)
A = Ammo Pack (Available on Request)*
n
at 1 mA .................................................... 100 to 910.....................................V
Continuous:
Steady State Applied Voltage:
DC Voltage Range (V )........................... 85 to 745.......................................V
*Reel and Ammo Pack options not
available for Model Sizes 20 and 23.
dc
Lead Style
AC Voltage Range (V )......................... 60 to 550.......................................V
rms
1 = Straight Leads
5 = Crimped Leads
M = Metalized pellet
(Available upon request)
Transient:
Peak Single Pulse Surge Current,
8/20 µs Waveform (I ) ................... > 5500...........................................A/cm
2
max
Single Pulse Surge Energy,
10/1000 µs Waveform (W
Special Parameters
3
) ........... > 400.............................................J/cm
YY = Unique two digit suffix is assigned to
each customer requesting special
parameters. Please contact Bourns for
more information.
max
Protective Level Parameters
Clamping Voltage............................................ < 1.9 x V ....................................V
dc
Coefficient of non-linearity:
Minimum................................................... 45
Typical ...................................................... 60
Leakage Current Level:
Instructions for Creating Orderable
Part Number:
2
2
@ 25 °C.................................................... 0.5.................................................µA/cm
@ 85 °C.................................................... 10..................................................µA/cm
1) Start with base part number in
characteristics table (example:
SV250K20).
Environmental Parameters
Operating Ambient Temperature..................... -40 to +85 .....................................°C
Storage Temperature Range .......................... -40 to +125 ...................................°C
Minimum Threshold Voltage
2) Add Packaging: Bulk (example part number
becomes SV250K20B).
Temperature Coefficient ........................... -0.001 ...........................................%/°C
3) Add Lead Style: 1 (example part number
becomes SV250K20BL1).
Design Parameters
Leaded
4) Part number can have no spaces or
Coating....................................................... Epoxy resin
Lead Style................................................... Straight or crimped
Metalized Pallet .............................................. Solderable electrode finish
Shape ............................................................. Square, rectangular
Packaging....................................................... Bulk, tape and reel
lower case letters.
Typical Part Marking
MANUFACTURER’S
TRADEMARK
Size Parameters
Minimum Size.................................................. 5 x 5..............................................mm
Maximum Size................................................. 23 x 23..........................................mm
Lead Spacing................................................... 5.0, 7.5, 10....................................mm
Wire Diameter.................................................. 0.6, 0.8, 1.0...................................mm
MODEL
V
rms
SERIES
SURGE CURRENT
CODE
V
SV 250
K 802
n
TOLERANCE
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
SV Series - Special Medium Voltage Varistors
Pulse Ratiing Curves - Protection level with worst-case condition in the tolerance region
Model Size 5 - (SV60 ~ SV275)
4000
2000
1000
104
800
5
600
103
5
400
102
5
200
101
5
100
80
100
5
60
40
10-1
101
5
102
5
103
5
104
10-5 10-4 10-3 10-2 10-1 100 101 102 103 104
t (µs)
p
I (Amps)
Model Size 7 - (SV60 ~ SV300)
4000
2000
1000
800
104
5
600
103
5
400
102
5
200
101
5
100
80
100
5
60
10-1
101
5
102
5
103
5
104
10-5 10-4 10-3 10-2 10-1 100 101 102 103 104
t (µs)
p
I (Amps)
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
SV Series - Special Medium Voltage Varistors
Pulse Rating Curves (Continued) - Protection level with worst-case condition in the tolerance region
Model Size 10 - (SV60 ~ SV550)
4000
2000
1000
104
5
800
600
103
5
400
102
200
5
101
5
100
80
100
5
60
40
10-1
101
5
102
5
103
5
104
10-5 10-4 10-3 10-2 10-1 100 101 102 103 104
t (µs)
p
I (Amps)
Model Size 14 - (SV60 ~ SV550)
4000
2000
1000
800
104
5
600
103
5
400
102
5
200
101
5
100
80
100
5
60
40
10-1
10-5 10-4 10-3 10-2 10-1 100 101 102 103 104
101
5
102
5
103
5
104
I (Amps)
t (µs)
p
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
SV Series - Special Medium Voltage Varistors
Pulse Rating Curves (Continued) - Protection level with worst-case condition in the tolerance region
Model Size 20 - (SV60 ~ SV550)
4000
2000
1000
105
5
800
600
104
5
400
103
200
5
102
5
100
80
101
5
60
40
100
101
5
102
5
103
5
104
10-5 10-4 10-3 10-2 10-1 100 101 102 103 104
t (µs)
p
I (Amps)
Model Size 23 - (SV130 ~ SV550)
4000
2000
1000
800
105
5
600
104
5
400
103
5
200
102
5
100
80
101
5
60
40
100
101
5
102
5
103
5
104
10-5 10-4 10-3 10-2 10-1 100 101 102 103 104
t (µs)
p
I (Amps)
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
SV Series - Special Medium Voltage Varistors
Packaging Specifications - Tape
Conforms to IES Publication 286-2 Ed. 3: 2008-03
Dimension R = 5 mm
ΔP
ΔP
Δh
Δh
W
1
H
0
H
W
1
2
H
D
1
0
W
H
L
W
P
d
R
0
1
L
1
P
P
0
t
T
Dimensions on Next Page
Dimension R = 7.5 mm & 10 mm
ΔP
ΔP
Δh
Δh
H
H
1
1
W
1
H
0
W
2
D
0
H
W
L
W
P
d
P
R
0
1
L
1
P
0
T
t
Dimensions on Next Page
Reel
Ammo Pack (Available upon Special Request)
18
(.709)
DIA.
265
(10.433)
85
(3.346)
DIA.
300
(11.811)
DIA.
47
(1.850)
55
MAX.
MAX.
MM
(INCHES)
DIMENSIONS:
(2.165)
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
SV Series - Special Medium Voltage Varistors
Packaging Specifications - Tape (Continued)
Model Size
10
Symbol
Parameter
5
7
14
20
18 +1.0/-0.5
(.709 +.039/-.020)
W
Carrier tape width
5
MIN.
W
W
Hold down tape width
Sprocket hole position
0
1
(.197)...........
9 +0.75/-0.5
(.354 +.030/-.020)
Distance between the upper edges of the
carrier tape and hold down tape
3
MAX.
W
2
(.118). ..........
1.5
(.059). .........
1.7
1.9
(.075). .........
MAX.
MAX.
MAX.
T
t
Total tape thickness
Tape thickness
(.067). .........
0.9
MAX.
(.035). ..........
12.7 1.0
(.500 .039)
25.4 1.0
(1.000 .039)
P
Pitch of component
Feed hole pitch
12.7 0.3
(.500 .012)
P
0
1
3.85 0.7
(.152 .028)
8.95 0.7
(.352 .028)
7.7 0.7
P
Feed hole center to pitch
Lead spacing
(.303 .028)
5 +0.5/-0.2
7.5 +0.5/-0.2
10 +0.5/-0.2
(.394 +.020/-.008)
R
(.197 +.020/-.008)
(.295 +.020/-.008)
1.3
MAX.
DP
Dh
d
Component alignment
Component alignment
Wire diameter
( .051). ..........
2
MAX.
( .079). .........
0.6
0.8
(.031). ........
1
MAX.
MAX.
MAX.
(.024). .........
(.039). ........
4
0.2
D
Feed hold diameter
Height from tape center to component base
Seating plane height
Component height
0
(.157 .008)
18 +2.0/-0.0
(.709 +.079/-.000)
H
16 0.5
(.630 .020)
H
H
0
1
32.2
(1.268). ........
46.5
(1.831). ........
MAX.
MAX.
11
MAX.
L
Protrusion - cut out
Protrusion - cut off
(.433). ........
0.5
(.020). ........
MAX.
L
1
MM
(INCHES)
DIMENSIONS:
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
SV Series - Special Medium Voltage Varistors
Packaging Quantities - Bulk
Model Size
Voltage
5
7
10
14
20
23
60
75
1300
1300
1300
1300
1300
1300
1300
1300
900
1000
1000
900
900
900
900
900
900
900
900
900
900
500
500
500
400
400
400
400
400
400
400
400
400
400
300
300
300
300
300
400
400
400
400
400
400
400
400
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
150
150
150
150
150
150
150
95
115
130
140
150
175
230
250
275
300
320
385
420
460
510
550-680
150
150
150
150
150
150
150
100
100
100
100
100
100
100
900
900
Packaging Quantities - Reel
Model Size
Voltage
5
7
10
14
60
75
1500
1300
1300
1300
1300
1300
1200
1200
1000
1000
1000
1500
1300
1300
1300
1300
1300
1200
1200
1000
1000
1000
900
1300
1300
1200
1200
1200
1200
1000
1000
1000
900
600
600
600
500
500
500
500
500
500
400
400
400
400
300
300
300
300
300
95
115
130
140
150
175
230
250
275
300
320
385
420
460
510
550-680
900
800
800
700
700
600
600
600
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
SV Series - Special Medium Voltage Varistors
Assembly Recommendations for Through-Hole Components
Very often before soldering through-hole components, their leads
get bent. It is important not to damage the components during lead
bending. Damage most commonly incurred during bending is cracks
in epoxy parts, which can lead to increased humidity sensitivity of a
component and, consequentially, a shorter lifetime.
POINT TO BE FIXED
2
(.079)
In order to avoid epoxy damage, it is necessary to:
- fix the most sensitive point (epoxy parts) of a component body
- bend the wire at least 2 mm below the end of epoxy parts
Other potential damage to a component which can lead to component
failure or a shorter lifetime is thermal shock during manual soldering
with a soldering iron. This can occur when a soldering iron is placed
too close to one point of the component body and it happens most
often when the solder joint is too close to the varistor body.
MM
(INCHES)
DIMENSIONS:
Resistance to Soldering Heat
In the case of automatic wave soldering, it is important to provide sufficient resistance to soldering heat. In order to prevent any
potential problems, internal standards were introduced for testing the resistance to soldering heat of through-hole components: 300 °C,
10 seconds.
Pb-free Wave Soldering Profile Recommendations
Recommended soldering profiles for all above components are in accordance with JEDEC standard curves (J-STD-020D) and are,
therefore, compatible with the Pb-free process.
Lead-free Wave Soldering Profile - Pb-free wave profile requirements for soldering heat resistance of components
Parameter
Symbol
Specification
4 °C/sec. max.
2 to 5 min.
130 °C
t
(w1+w2)
T
3
Preheating temperature gradient
Preheating time
T
merit
t
MELTING POINT 217 °C
1
Min. preheating temperature
Max. preheating temperature
Melting temperature/point
Time in wave soldering phase
T
1
2
T
180 °C
T
2
T
217 °C
meltv
t
10 sec.
w1+w2
(w +w )
1
2
T
1
Max. wave temperature (w +w )
T
s
265 °C +0/-5 °C
6° C/sec. max.
1
2
Cooling temperature gradient
t
TIME
1
Temperature jump from T to T
2
3
T
- T
120 °C max
8 min. max.
3(w1)
2
(w )
1
Time from 25 °C to T (wave
3
temperature)
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
SV Series - Special Medium Voltage Varistors
Reliability Testing Procedures
Varistor test procedures comply with CECC 42200, IEC 1051-1/2 (and AEC-Q200, if applicable for automotive grade products). Test
results are available upon customer request. Special tests can be performed upon customer request.
Condition to be
Reliability Parameter
Test
Tested According to
CECC 42200, Test 4.20 or
Satisfied after
Testing
AC/DC Bias Reliability
AC/DC Life Test
IEC 1051-1, Test 4.20,
AEC-Q200 Test 8 - 1000 h at UCT
|δV (1 mA)| < 10 %
n
CECC 42200, Test C 2.1 or
IEC 1051-1, Test 4.5
10 pulses in the same direction at
2 pulses per minute at maximum peak current for 10 pulses
|δV (1 mA)| < 10 %
no visible damage
n
Pulse Current Capability
I
8/20 µs
max
CECC 42200, Test C 2.1 or
IEC 1051-1, Test 4.5
10 pulses in the same direction at
1 pulse every 2 minutes at maximum peak current for 10
pulses
|δV (1 mA)| < 10 %
no visible damage
n
Pulse Energy Capability
WLD Capability
W
10/1000 µs
max
|δV (1 mA)| < 15 %
n
WLD x 10
5 min.
ISO 7637, Test pulse 5, 10 pulses at rate of 1 per minute
no visible damage
|δV (1 mA)| < 15 %
n
V
Capability
V
Increase of supply voltage to V ≥ V
for 1 minute
jump
jump
jump
no visible damage
CECC 42200, Test 4.16 or
IEC 1051-1, Test 4.17
a) Dry heat, 16h, UCT, Test Ba, IEC 68-2-2
b) Damp heat, cyclic, the first cycle: 55 °C, 93 % RH, 24 h,
Test Db 68-2-4
c) Cold, LCT, 2 h, Test Aa, IEC 68-2-1
d) Damp heat cyclic, remaining 5 cycles: 55 °C, 93 % RH,
24 h/cycle, Test Bd, IEC 68-2-30
Climatic Sequence
Thermal Shock
|δV (1 mA)| < 10 %
n
Environmental and
Storage Reliability
CECC 42200, Test 4.12, Test Na, IEC 68-2-14,
AEC-Q200 Test 16, 5
|δV (1 mA)| < 10 %
n
no visible damage
CECC 42200, Test 4.17, Test Ca, IEC 68-2-3,
AEC-Q200 Test 6, 56 days, 40 °C, 93 % RH,
AEC-Q200 Test 7: Bias, Rh, T all at 85.
Steady State
Damp Heat
|δV (1 mA)| < 10 %
n
IEC 68-2-2, Test Ba, AEC-Q200 Test 3, 1000 h at maximum
storage temperature
Storage Test
|δV (1 mA)| < 5 %
n
Continued on Next Page
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
SV Series - Special Medium Voltage Varistors
Reliability Testing Procedures (Continued)
Condition to be
Satisfied after
Testing
Reliability Parameter
Test
Tested According to
Solderable at
shipment and after
2 years of storage,
criteria: >95% must
be covered by solder
for reflow meniscus
CECC 42200, Test 4.10.1, Test Ta, IEC 68-2-20 solder bath
and reflow method
Solderability
Resistance to
Soldering Heat
CECC 42200, Test 4.10.2, Test Tb, IEC 68-2-20 solder bath
nad reflow method
|δV (1 mA)| < 5 %
n
JIS-C-6429, App. 1, 18N for 60 sec. - same for AEC-Q200
Test 22
Terminal Strength
Board Flex
No visual damage
JIS-C-6429, App. 2, 2 mm min.
AEC-Q200 test 21 - Board flex: 2 mm flex min.
|δV (1 mA)| < 2 %
n
Mechanical Reliability
No visible damage
CECC 42200, Test 4.15, Test Fc, IEC 68-2-6,
AEC-Q200 Test 14
Frequency range 10 to 55 Hz (AEC: 10-2000 Hz)
|δV (1 mA)| < 2 %
n
Vibration
2
2
Amplitude 0.75 m/s or 98 m/s (AEC: 5 g for 20 minutes) To- No visible damage
tal duration 6 h (3x2 h) (AEC: 12 cycles each of 3 directions)
Waveshape - half sine
CECC 42200, Test 4.14, Test Ea, IEC 68-2-27, AEC-Q200
Test 13.
Mechanical Shock Acceleration = 490 m/s (AEC: MIL-STD-202-Method 213),
Pulse duration = 11 ms,
|δV (1 mA)| < 10 %
No visible damage
n
2
Waveshape - half sine; Number of shocks = 3x6
Electrical Transient
Conduction
AEC-Q200 Test 30: Test pulses 1 to 3.
ISO-7637-1 Pulses
|δV (1 mA)| < 10 %
No visible damage
n
Also other pulses - freestyle.
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
SV Series - Special Medium Voltage Varistors
Terrminology
Term
Symbol
Definition
Rated AC Voltage.........................V
..................Maximum continuous sinusoidal AC voltage (<5 % total harmonic distortion) which may be
applied to the component under continuous operation conditions at +25 °C
rms
Rated DC Voltage.........................V ....................Maximum continuous DC voltage (<5 % ripple) which may be applied to the component
dc
under continuous operating conditions at +25 °C
Supply Voltage..............................V........................The voltage by which the system is designated and to which certain operating
characteristics of the system are referred; V
= 1.1 x V
rms
Leakage Curreent.........................I ......................The current passing through the varistor at V and at +25 °C or at any other specified
dc
dc
temperature
Varistor Voltage ............................V ......................Voltage across the varistor measured at a given reference current (I )
n
n
Reference Current........................I .......................Reference current = 1 mA DC
n
Clamping Voltage .........................V ......................The peak voltage developed across the varistor under standard atmospheric conditions,
c
Protection Level
when passing an 8/20 µs class current pulse
Class Current................................I ........................A peak value of current which is 1/10 of the maximum peak current for 100 pulses at two
c
per minute for the 8/20 µs pulse
Voltage Clamping Ratio................V /V
.............A figure of merit measure of the varistor clamping effectiveness as defined by the symbols
c
app
V /V , where (V
= V
or V )
c
app
app
rms dc
Jump Start Transient ....................V
.................The jump start transient results from the temporary application of an overvoltage in excess
of the rated battery voltage. The circuit power supply may be subjected to a temporary
overvoltage condition due to the voltage regulation failing or it may be deliberately generated
when it becomes necessary to boost start the car.
jump
Rated Single Pulse.......................W
Transient Energy
.................Energy which may be dissipated for a single 10/1000 µs pulse of a maximum rated
current, with rated AC voltage or rated DC voltage also applied, without causing device
failure
max
Load Dump Transient...................WLD..................Load Dump is a transient which occurs in automotive environments. It is an exponentially
decaying positive voltage which occurs in the event of a battery disconnect while the alter-
nator is still generating charging current with other loads remaining on the alternator circuit
at the time of battery disconnect.
Rated Peak Single Pulse..............I
Transient Current
...................Maximum peak current which may be applied for a single 8/20 µs pulse, with rated line
voltage also applied, without causing device failure
max
Rated Transient Average..............P........................Maximum average power which may be dissipated due to a group of pulses occurring
Power Dissipation within a specified isolated time period, without causing device failure at 25 °C
Capacitance..................................C........................Capacitance between two terminals of the varistor measured @ 1 kHz
Non-linearity Exponent.................α........................A measure of varistor nonlinearity between two given operating currents, I and I as
n
1
described by I = k V exp(a), where:
- k is a device constant,
- I < I < I and
1
n
- a log (I /I )/log(V /V ) = 1/log (V /V ), where:
1 n
1
n
1
n
n
- I is reference current (1 mA) and V is varistor voltage
r
- I = 10 I , V is the voltage measured at I
1
n
1
1
Response Time.............................tr........................The time lag between application of a surge and varistor’s “turn-on” conduction action
Varistor Voltage Temperature .......TC .....................(V @ 85 °C - V @ 25 °C) / (V @ 25 °C) x 60 °C) x 100
n
n
n
Coefficient
Insulation Resistance ...................IR.......................Minimum resistance between shorted terminals and varistor surface
Isolation Voltage......................................................The maximum peak voltage which may be applied under continuous operating conditions
between the varistor terminations and any conducting mounting surface
Operating Temperature..............................................The range of ambient temperature for which the varistor is designed to operate continuously
as defined by the temperature limits of its climatic category
Climatic Category .........................LCT/UCT/DHD..LCT & UCT = Lower and Upper Category Temperature - the minimum and maximum
ambient temperatures for which a varistor has been designed to operate continuously.
DHD = Dump Heat Test Duration
Storage Temperature...............................................Storage temperature range without voltage applied
Current/Energy Derating..........................................Derating of maximum values when operated above UCT
REV. 01/21
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
Legal Disclaimer Notice
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affiliates (collectively, “Bourns”).
Unless otherwise expressly indicated in writing, Bourns® products and data sheets relating thereto are subject to change
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The characteristics and parameters of a Bourns® product set forth in its data sheet are based on laboratory conditions, and
statements regarding the suitability of products for certain types of applications are based on Bourns’ knowledge of typical
requirements in generic applications. The characteristics and parameters of a Bourns® product in a user application may vary
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Bourns® products are not recommended, authorized or intended for use in nuclear, lifesaving, life-critical or life-sustaining ap-
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C1753 05/17/18R
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