SMOV25S621MP [LITTELFUSE]
RESISTOR, VOLTAGE DEPENDENT;
| 型号： | SMOV25S621MP |
| 厂家： | 
LITTELFUSE |
| 描述： | RESISTOR, VOLTAGE DEPENDENT 电阻器 |
| 文件： | 总6页 (文件大小：1008K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Metal-OxideVaristors (MOVs)
Thermally Protected Varistors > SMOV®25S Varistor Series
SMOV25S® Varistor Series
ꢀoHS
Description
The Littelfuse SMOV®25S thermally protected varistor is a
self-protected device. It consists of a 25mm square varistor
with an integral thermal disconnect designed to open in the
event of overheating due to abnormal overvoltage as outlined
in UL1449. The SMOV® helps facilitate SPD module compliance
to UL1449 and offers quick thermal response due to the close
proximity of the integrated thermal element to the MOV body.
This configuration also offers lower inductance than most discreet
solutions resulting in improved clamping performance to fast over
voltage transients.
The device has a separate micro-switch, which can be used to
indicate that the MOV has been disconnected from the circuit. This
separate switch makes the monitoring circuitry completely isolated
from the main power which ensures indicator circuit safety and
simplifies the customers circuit design.
Agency Approvals
Agency
Agency Approval
Agency File Number
Features
UL1449
E320116
• Maximum single
surge capability 20 kA,
8/20 waveshape.
• Recognized to UL 1449.
• Lead-Free and RoHS
compliant.
• Nominal Discharge
Current Value: 10kA.
Additional Information
• Integrated micro-switch for
indication circuitry/design.
• Intermediate current
rating: 50A/150A.
• -45°C to +75°C operating
temperature.
Datasheet
ꢀesoꢁrꢂes
ꢀaꢁꢂles
Applications
•
SPD applications
• AC/DC distribution
• IT/Data center
• Power supplier
• Telecommunication
Absolute Maximum Ratings
• For ratings of individual members of a series, see Device Ratings and Specifications chart.
Units
SMOV25S Varistor Series
Continous:
Steady State Applied Voltage:
DC Voltage Range (VM(DC))
150 to 970
115 to 750
V
V
AC Voltage Range (VM(AC)RMS
)
Transient:
Non-Repetitive Surge Current, 8/20µs Waveform (ITM
Non-Repetitive Energy Capability, 2ms Waveform (WTM
Operating Ambient Temperature Range (TA)
Storage Temperature Range (TSTG
)
20,000
170 to 670
-45 to +75
-45 to +85
2500
A
J
)
°C
°C
V
)
Hi-Pot Encapsulation (Isolation Voltage Capability)
Isolation Voltage Capability (when the thermal disconnect opens)
Housing Insulation Resistance
1500
V
>1,000
MΩ
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or
any other conditions above those indicated in the operational sections of this specification is not implied.
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/14/17
Metal-OxideVaristors (MOVs)
Thermally Protected Varistors > SMOV®25S Varistor Series
Device Ratings & Specifications
Maximum Rating (75°C)
Transient
Specifications (25 °C)
Continuous
Varistor
Voltage at
1mATest
Current
Maximum
Clamping
Voltage
Typical
Capacitance
f = 1MHz
Peak Surge
Current
Nominal
Discharge
Current (In)
Part
AC
DC
Energy
2ms
Number
Volts
8/20μs
Volts
8/20μs
ITM
1 × Pulse
(A)
VN(DC)
Min
VN(DC)
Max
(V)
VM (AC)
(V)
VM(DC)
(V)
WTM
(J)
In
Vc
IPK
C
(A)
(V)
(A)
(pF)
SMOV25S111MP
115
150
170
200
225
170
190
220
250
20000
20000
20000
20000
10000
10000
10000
10000
162
184.5
216
198
225.5
264
295
335
390
450
100
100
100
100
3200
2800
2300
1900
SMOV25S111NP
SMOV25S131MP
130
SMOV25S131NP
SMOV25S151MP
150
SMOV25S151NP
SMOV25S181MP
175
243
297
SMOV25S181NP
SMOV25S251MP
250
320
350
385
420
560
615
670
745
800
970
330
350
370
390
460
490
520
550
600
670
20000
20000
20000
20000
20000
20000
20000
20000
20000
20000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
351
387
423
459
612
675
738
819
900
1080
429
473
517
640
700
100
100
100
100
100
100
100
100
100
100
1400
1250
1150
1080
820
SMOV25S251NP
SMOV25S271MP
275
SMOV25S271NP
SMOV25S301MP
300
765
SMOV25S301NP
SMOV25S321MP
320
561
748
825
SMOV25S321NP
SMOV25S421MP
420
1100
1220
1335
1475
1625
1950
SMOV25S421NP
SMOV25S461MP
460
825
902
1001
1100
1320
750
SMOV25S461NP
SMOV25S511MP
510
680
SMOV25S511NP
SMOV25S551MP
550
630
SMOV25S551NP
SMOV25S621MP
620
550
SMOV25S621NP
SMOV25S751MP
750
460
SMOV25S751NP
Average power dissipation of transients should not exceed 1.5 watts
Same ratings and specifications apply to Non Isolated Monitored Switch alternative design. Replace "M" with "N" in the part number. e.g.: SMOV25S111NP.
Refer to Part Number System at the end of this document.
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/14/17
Metal-OxideVaristors (MOVs)
Thermally Protected Varistors > SMOV®25S Varistor Series
Peak Current & Energy Derating Curve
Thermal Characteristics
For applications exceeding 75ºC ambient temperature, the
peak surge current and energy ratings must be reduced
as shown below.
Typical time to open circuit under UL 1449 Limited Current
Abnormal OvervoltageTest:
ꢂꢀ
ꢅꢀꢀ
ꢄꢀ
ꢃꢀ
ꢂꢀ
ꢁꢀ
ꢀ
ꢃꢄꢅꢆꢇꢈꢉ
10 A
ꢂ
5 A
2.5 A
0.5 A
ꢆ ꢂꢇ
ꢇꢀ
ꢃꢀ
ꢈꢀ
ꢄꢀ
ꢉꢀ
ꢅꢀꢀ
ꢅꢅꢀ
ꢅꢁꢀ
ꢅꢊꢀ
ꢋMꢌꢍꢎꢏꢐꢐꢎMꢑꢎꢒꢋꢐꢓꢒꢎ (ꢔꢕ)
ꢀꢁꢂ
ꢂ
ꢂꢀ
ꢂꢀꢀ
Figure 2
Figure 1
TransientV–I Characteristic Curves
10000
750
625
550
510
460
440
420
385
1000
320
300
275
250
175
230
150
140
130
115
100
10µA
Figure 3
100µA
1mA
10mA
100mA
1A
Peak Current
10A
100A
1000A
10000A 1
00000A
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/14/17
Metal-OxideVaristors (MOVs)
Thermally Protected Varistors > SMOV®25S Varistor Series
Pulse Rating Curve
100000
1
2
10000
1000
100
15
102
103
104
105
106
∞
10
1
Figure 4
10
100
1000
10000
Impulse Duration (secs)
Wave Solder Profile
Because the SMOV®25S Varistors contain a thermal protection
device, care must be taken when soldering the devices into place.
Two soldering methods are possible. Firstly, hand soldering: It is
recommended to heat–sink the leads of the device. Secondly,
wave–soldering: It is critically important that all preheat stage and
the solder bath temperatures are rigidly controlled.
Non Lead–free Profile
Lead–free Profile
300
300
Maximum Wave 260C
250
Maximum Wave 240C
250
200
150
100
50
200
150
100
50
0
0
0
0.5
1
1.5
2
2.5
3
3.5
4
0
0.5
1
1.5
2
2.5
3
3.5
4
ꢀꢁMꢂꢃMꢁꢄꢅꢀꢂꢆꢇ
TIME(MINUTES)
Figure 5
Figure 6
Environmental Specifications
Physical Specifications
Operating/StorageTemp. -45°C to +75°C
Lead Material
Tin–plated
+75°C, 1000 hours
-/+10% typical voltage change
Passive Aging
Soldering
Characteristics
Solderability per MIL-STD-202,
Method 208
+75°C, 85%R.H., 1000 hours
-/+10% typical voltage change
Humidity Aging
Thermal Shock
Cured, flame retardant epoxy polymer
meets UL94V-0 requirements
Insulating Material
Device Labeling
+75°C to -40°C 5 times
-/+10% typical voltage change
Marked with LF, voltage, UL logos, and
date code
Solvent Resistance
Moisture Sensitivity
MIL-STD-202, Method 215
Level 1, J-STD-020
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/14/17
Metal-OxideVaristors (MOVs)
Thermally Protected Varistors > SMOV®25S Varistor Series
Product Dimensions
Lead Configuration
ꢀꢁꢂꢃꢄ
ꢁꢅꢆꢇꢂꢃꢄ
Galvanic isolation
P1
LF9
ꢐꢑ ꢋ
SMOVXXS321MP
1209
ꢒꢂꢓꢔꢈꢇꢒꢀꢈꢁꢂꢕ
ꢁꢁꢎꢏ
Thermal
disconnect
S1 ON
(Normal Close)
S3 Common
ꢁꢆꢀ ꢉꢆꢀ
ꢉꢆꢀ ꢉꢆꢈ
MOV
ꢈ
ꢉꢆꢀ
S2 S3 S1
ꢁꢆꢎ ꢉꢆꢈ
S2 OFF
(Normal open)
P1
P2
P2
ꢀꢆꢇ ꢉꢆꢈ
ꢁꢀꢆꢎ ꢉꢆꢈ
ꢀꢊꢉꢆꢅ ꢉꢆꢈ
ꢉꢆꢇ ꢉꢆꢈ
ꢀꢆꢇ ꢉꢆꢈ
S2 S3 S1
P1
P2
Primary side
Secondary side
ꢎꢆꢉ ꢁꢆꢈ
Application Example
Galvanic isolation
P1
* LED is off when the product is normal(S1,S3 connected),
LED is on when the product disconect opens(switch change
status; S2,S3 connected as shown by dotted line ).
Thermal
disconnect
S1 ON
LED
R
S3 Common
MOV
S2 OFF
Note: EXAMPLE ONLY - Connection to S2-S3 and S1-S3
depends on customer indication circuit and can vary.
P2
Secondary side
Primary side
Switch Specification
Dialectric Strength
0.5mA/Minute
SMOV Switch Voltage DC
Current (Amps)
Contact Resistance Max. Insulation Resistance Min.
70mΩ 100MΩ
Switch
12V
0.1A
500VAC
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/14/17
Metal-OxideVaristors (MOVs)
Thermally Protected Varistors > SMOV®25S Varistor Series
Part Marking System
Part Numbering System
ꢀꢁ ꢂꢃꢄꢅꢆꢇꢈꢉꢃꢊ
SMOV 25 S 321 N P Xxxxx
ꢋꢅꢌꢍꢅꢇꢃꢇꢎ ꢏꢐꢑꢒ
ꢓꢑꢅꢊꢔꢄꢎꢈꢅꢇ ꢕꢈꢎꢃ ꢋꢅꢊꢃ
ꢁꢈꢎꢎꢃꢖꢗꢔꢘꢃ ꢏꢐꢑꢒ
DEVICE FAMILY
ꢀꢁꢂꢂꢃꢄꢅꢆꢇꢃꢈꢉꢃꢊꢋꢌꢄꢄꢍ ꢎꢃꢄꢅ ꢏꢊꢐꢂꢃꢑꢂꢃꢒ ꢓꢔꢕ
DISC SIZE (mm)
LF9
SMOV25S321MP
1148
ꢖꢗꢋꢋ
ꢓꢐꢑꢎ ꢙꢔꢌꢚꢃꢑ
CERAMIC SHAPE
ꢎꢘ ꢎꢙꢆꢌꢊꢃ
ꢓꢑꢅꢊꢔꢄꢎꢈꢅꢇ ꢛꢐꢎꢃ ꢛꢅꢊꢃ
ꢜꢝꢃꢐꢑ ꢐꢇꢊ ꢞꢃꢃꢒꢟ
V
M(AC)RMS
ꢚꢚꢗꢕ ꢂꢐ ꢛꢗꢜꢕ
M:With Isolated Monitored Switch
N: Non Isolated Monitored Switch Design
P: Lead-Free and RoHS compliant
Option Codes
Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and
test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications.
Read complete Disclaimer Notice at www.littelfuse.com/disclaimer-electronics.
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/14/17
相关型号：
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