SA26 [TSC]
Transient Voltage Suppressor Diodes; 瞬态电压抑制二极管
| 型号： | SA26 |
| 厂家： | 
TAIWAN SEMICONDUCTOR COMPANY, LTD |
| 描述： | Transient Voltage Suppressor Diodes |
| 文件： | 总5页 (文件大小：94K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SA SERIES
Transient Voltage Suppressor Diodes
Voltage Range
5.0 to 170 Volts
500 Watts Peak Power
1.0 Watt Steady State
DO-15
Features
ꢀ
Plastic package has Underwriters Laboratory Flammability
Classification 94V-0
ꢀ
500W surge capability at 10 X 10us waveform, duty cycle:
0.01%
ꢀ
ꢀ
ꢀ
Excellent clamping capability
Low zener impedance
Fast response time: Typically less than 1.0ps from 0 volts to
VBR for unidirectional and 5.0 ns for bidirectional
Typical IR less than 1μA above 10V
High temperature soldering guaranteed: 260°C / 10 seconds
/ .375”,(9.5mm) lead length / 5lbs.,(2.3kg) tension
ꢀ
ꢀ
Mechanical Data
ꢀ
Case: Molded plastic
ꢀ
Lead: Axial leads, solderable per MIL-STD-
Lead: 202, Method 208
ꢀ
ꢀ
Polarity: Color band denotes cathode except
bipolar
Weight: 0.34 gram
Dimensions in inches and (millimeters)
Maximum Ratings and Electrical Characteristics
Rating at 25°C ambient temperature unless otherwise specified.
Type Number
Symbol
Value
Units
Peak Power Dissipation at TA=25OC, Tp=1ms
(Note 1)
PPK
Minimum 500
Watts
Steady State Power Dissipation at TL=75 °C
Lead Lengths .375”, 9.5mm (Note 2)
PD
1.0
70
Watts
Amps
Peak Forward Surge Current, 8.3 ms Single Half
Sine-wave Superimposed on Rated Load
(JEDEC method) (Note 3)
IFSM
Maximum Instantaneous Forward Voltage at
35.0A for Unidirectional Only
VF
3.5
Volts
°C
Operating and Storage Temperature Range
TJ, TSTG
-55 to + 175
Notes: 1. Non-repetitive Current Pulse Per Fig. 3 and Derated above TA=25OC Per Fig. 2.
2. Mounted on Copper Pad Area of 1.6 x 1.6” (40 x 40 mm) Per Fig. 5.
3. 8.3ms Single Half Sine-wave or Equivalent Square Wave, Duty Cycle=4 Pulses Per Minutes
Maximum.
Devices for Bipolar Applications
1. For Bidirectional Use C or CA Suffix for Types SA5.0 through Types SA170.
2. Electrical Characteristics Apply in Both Directions.
- 632 -
RATINGS AND CHARACTERISTIC CURVES (SA SERIES)
FIG.2- PULSE DERATING CURVE
FIG.1- PEAK PULSE POWER RATING CURVE
40
10
100
75
NON-REPETITIVE
PULSE WAVEFORM
SHOWN in FIG.3
TA
=250C
IMPULSE
EXPONENTIAL
DECAY
O
P
PK
5
50
ld
1
HALF SINE
ld
PPK
25
0
ld=7lp
SQUARE
P
PK
ld
CURRENT WAVEFORM
0.1
0.1ms
100ms
tp, PULSE WIDTH, sec.
0
1ms
10ms
1,000ms
10,000ms
25
50
75
100
125
150
175
200
TA, AMBIENT TEMPERATURE, oC
FIG.4- MAXIMUM NON-REPETITIVE FORWARD SURGE
CURRENT UNIDIRECTIONAL ONLY
FIG.3- PULSE WAVEFORM
150
200
100
PULSE WIDTH (td) is DEFINED
as the POINT WHERE the PEAK
CURRENT DECAYS
8.3ms Single Half Sine Wave
JEDEC Method
tr=10msec.
to 50% of lPPM
PEAK VALUE
PPM
l
100
50
0
HALF VALUE- lPPM
2
10/1000msec. WAVEFORM
as DEFINED by R.E.A.
td
10
0
1.0
2.0
3.0
4.0
1
10
100
t, TIME, ms
NUMBER OF CYCLES AT 60Hz
FIG.5- STEADY STATE POWER DERATING CURVE
1.6
1.4
1.2
L=0.375"(9.5mm)
LEAD LENGTHS
1.0
0.8
0.6
0.4
1.6 X 1.6 X .040"
(40 X 40 X 1mm.)
COPPER HEAT SINKS
0.2
0
0
25
50
75
100
125
150
175
200
TL, LEAD TEMPERATURE, oC
- 633 -
ELECTRICAL CHARACTERISTICS (TA=25OC unless otherwise noted)
Breakdown Voltage
VBR
Test
Current
@IT
Stand-Off
Voltage
VWM
Maximum
Reverse Leakage
at VWM
Maximum
Peak Pulse
Current IPPM
Maximum
Clamping
Voltage at IPPM
Maximum
Temperature
Coefficient
of VBR mV / OC)
Device
(Volts) (Note 1)
ID (uA)
VC(Volts)
Min
Max
(mA)
(Volts)
(Note 2)(Amps)
SA5.0
SA5.0A
SA6.0
SA6.0A
SA6.5
SA6.5A
SA7.0
SA7.0A
SA7.5
SA7.5A
SA8.0
SA8.0A
SA8.5
SA8.5A
SA9.0
SA9.0A
SA10
6.40
6.40
6.67
6.67
7.22
7.22
7.78
7.78
8.33
8.33
8.89
8.89
9.44
9.44
10.0
10.0
11.1
11.1
12.2
12.2
13.3
13.3
14.4
14.4
15.6
15.6
16.7
16.7
17.8
17.8
18.9
18.9
20.0
20.0
22.2
22.2
24.4
24.4
26.7
26.7
28.9
28.9
31.1
31.1
33.3
33.3
36.7
36.7
40.0
40.0
44.4
44.4
47.8
47.8
7.30
7.00
8.15
7.37
8.82
7.98
9.51
8.60
10.2
9.21
10.9
9.83
11.5
10.4
12.2
11.1
13.6
12.3
14.9
13.5
16.3
14.7
17.6
15.9
19.1
17.2
20.4
18.5
21.8
19.7
23.1
20.9
24.4
22.1
27.1
24.5
29.8
26.9
32.6
29.5
35.3
31.9
38.0
34.4
40.7
36.8
44.9
40.6
48.9
44.2
54.3
49.1
58.4
52.8
10
10
5.0
5.0
600
600
600
600
400
400
150
150
50
54.0
57.0
46.0
50.0
42.0
46.0
39.0
43.0
36.0
40.0
35.0
38.0
33.0
36.0
31.0
34.0
27.0
30.0
26.0
28.0
23.0
26.3
22.0
24.0
20.3
22.6
19.5
21.0
18.0
20.0
17.0
19.0
16.3
17.9
14.0
16.0
13.0
14.7
12.0
13.4
11.0
12.4
10.0
11.5
9.8
9.60
9.20
11.4
10.3
12.3
11.2
13.3
12.0
14.3
12.9
15.0
13.6
15.9
14.4
16.9
15.4
18.8
17.0
20.1
18.2
22.0
19.9
23.8
21.5
25.8
23.2
26.9
24.4
28.8
26.0
30.5
27.6
32.2
29.2
35.8
32.4
39.4
35.5
43.0
38.9
46.6
42.1
50.1
45.4
53.5
48.4
59.0
53.3
64.3
58.1
71.4
64.5
76.7
69.4
5.0
5.0
10
6.0
5.0
10
6.0
5.0
10
6.5
5.0
10
6.5
5.0
10
7.0
6.0
10
7.0
6.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
7.5
7.0
7.5
50
7.0
8.0
25
7.0
8.0
25
7.0
8.5
10
8.0
8.5
10
8.0
9.0
5.0
5.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
9.0
9.0
9.0
10.0
10.0
11.0
11.0
12.0
12.0
13.0
13.0
14.0
14.0
15.0
15.0
16.0
16.0
17.0
17.0
18.0
18.0
20.0
20.0
22.0
22.0
24.0
24.0
26.0
26.0
28.0
28.0
30.0
30.0
33.0
33.0
36.0
36.0
40.0
40.0
43.0
43.0
10.0
10.0
11.0
11.0
12.0
12.0
13.0
13.0
14.0
14.0
16.0
16.0
19.0
17.0
20.0
19.0
21.0
20.0
25.0
23.0
28.0
25.0
31.0
28.0
31.0
30.0
35.0
31.0
39.0
36.0
42.0
39.0
46.0
41.0
51.0
46.0
55.0
50.0
SA10A
SA11
SA11A
SA12
SA12A
SA13
SA13A
SA14
SA14A
SA15
SA15A
SA16
SA16A
SA17
SA17A
SA18
SA18A
SA20
SA20A
SA22
SA22A
SA24
SA24A
SA26
SA26A
SA28
SA28A
SA30
SA30A
SA33
10.8
8.8
SA33A
SA36
9.8
8.1
SA36A
SA40
9.0
7.3
SA40A
SA43
SA43A
8.1
6.8
7.5
- 634 -
ELECTRICAL CHARACTERISTICS (TA=25OC unless otherwise noted)
Breakdown Voltage
VBR
Test
Current
@IT
Stand-Off
Voltage
VWM
Maximum
Reverse Leakage
at VWM
Maximum
Peak Pulse
Current IPPM
Maximum
Clamping
Voltage at IPPM
Maximum
Temperature
Coefficient
of VBR mV /OC)
Device
(Volts) (Note 1)
ID (uA)
VC(Volts)
Min
Max
(mA)
(Volts)
(Note 2)(Amps)
SA45
SA45A
SA48
SA48A
SA51
SA51A
SA54
SA54A
SA58
SA58A
SA60
SA60A
SA64
SA64A
SA70
SA70A
SA75
SA75A
SA78
SA78A
SA85
SA85A
SA90
SA90A
SA100
SA100A
SA110
SA110A
SA120
SA120A
SA130
SA130A
SA150
SA150A
SA160
SA160A
SA170
SA170A
50.0
50.0
53.3
53.3
56.7
56.7
60.0
60.0
64.4
64.4
66.7
66.7
71.1
71.1
77.8
77.8
88.3
88.3
86.7
86.7
94.4
94.4
100
100
111
111
122
122
133
133
144
144
167
167
178
178
189
189
61.1
55.3
65.2
58.9
69.3
62.7
73.3
66.3
78.7
71.2
81.5
73.7
86.9
78.6
95.1
86
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
45.0
45.0
48.0
48.0
51.0
51.0
54.0
54.0
58.0
58.0
60.0
60.0
64.0
64.0
70.0
70.0
75.0
75.0
78.0
78.0
85.0
85.0
90.0
90.0
100
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
6.5
7.2
6.1
6.7
5.7
6.3
5.4
6.0
5.0
5.6
4.9
5.4
4.6
5.0
4.2
4.6
3.9
4.3
3.7
4.1
3.4
3.8
3.2
3.5
2.9
3.2
2.6
2.9
2.4
2.7
2.2
2.5
1.9
2.1
2.0
2.0
1.7
1.9
80.3
72.7
85.5
77.4
91.1
82.4
96.3
87.1
103
93.6
107
96.8
114
103
125
113
134
121
139
126
151
137
160
146
179
162
196
177
214
193
230
209
268
243
257
259
304
275
58.0
52.0
63.0
56.0
66.0
61.0
71.0
65.0
78.0
70.0
80.0
71.0
86.0
76.0
94.0
85.0
101
91
102
92.1
103
95.8
115
104
122
111
136
123
149
135
163
147
176
159
204
185
218
197
231
209
105
95
114
103
121
110
135
123
148
133
162
146
175
158
203
184
217
196
230
208
100
110
110
120
120
130
130
150
150
160
160
170
170
Notes:
1. VBR measured after IT applied for 300us, IT = square wave pulse or equivallent.
2. Surge current waveform per Figure 3 and derate per Figure 2.
3. For bipolar types with VWM of 10 Volts and under, the ID limit is doubled.
4. All terms and symbols are consistent ANSI/IEEE C62.35.
- 635 -
TVS APPLICATION NOTES:
Transient Voltage Suppressors may be used at various points in a circuit to provide various degrees of
protection. The following is a typical linear power supply with transient voltage suppressor units placed at
different points. All provide protection of the load.
FIGURE 1
Transient Voltage Suppressors 1 provides maximum protection. However, the system will probably require
replacement of the line fuse(F) since it provides a dominant portion of the series impedance when a surge is
encountered.
However, we do not recommend to use the TVS diode here, unless we can know the electric circuit
impedance and the magnitude of surge rushed into the circuit. Otherwise the TVS diode is easy to be
destroyed by voltage surge.
Transient Voltage Suppressor 2 provides execllent protection of circuitry excluding the transformer(T).
However, since the transformer is a large part of the series impedance, the chance of the line fuse opening
during the surge condition is reduced.
Transient Voltage Suppressor 3 provides the load with complete protection. It uses a unidirectional
Transient Voltage Suppressor, which is a cost advantage. The series impedance now includes the line fuse,
transformer, and bridge rectifier(B) so failure of the line fuse is further reduced. If only Transient Voltage
Suppressor 3 is in use, then the bridge rectifier is unprotected and would require a higher voltage and current
rating to prevent failure by transients.
Any combination of these three, or any one of these applications, will prevent damage to the load. This would
require varying trade-offs in power supply protection versus maintenance(changing the time fuse).
An additional method is to utilize the Transient Voltage Suppressor units as a controlled avalanche bridge.
This reduces the parts count and incorporates the protection within the bridge rectifier.
FIGURE 2
- 636 -
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