SMOV25S621NP [LITTELFUSE]
SMOV25S Varistor Series;
| 型号： | SMOV25S621NP |
| 厂家： | 
LITTELFUSE |
| 描述： | SMOV25S Varistor Series 电阻器 |
| 文件： | 总6页 (文件大小：813K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Varistor Products
Thermally Protected Varistors > SMOV25S Series
RoHS
SMOV25S Varistor Series
Description
TheꢀLittelfuseꢀSMOVꢀthermallyꢀprotectedꢀvaristorꢀisꢀaꢀself-
protectedꢀdevice.ꢀItꢀconsistsꢀofꢀaꢀ25mmꢀsquareꢀvaristorꢀwithꢀanꢀ
integralꢀthermalꢀdisconnectꢀdesignedꢀtoꢀopenꢀinꢀtheꢀeventꢀofꢀ
overheatingꢀdueꢀtoꢀabnormalꢀovervoltageꢀasꢀoutlinedꢀinꢀUL1449ꢀ
3rdꢀedition.ꢀTheꢀSMOVꢀhelpsꢀfacilitateꢀSPDꢀmoduleꢀcomplianceꢀ
toꢀUL1449ꢀandꢀoffersꢀquickꢀthermalꢀresponseꢀdueꢀtoꢀtheꢀcloseꢀ
proximityꢀofꢀtheꢀintegratedꢀthermalꢀelementꢀtoꢀtheꢀMOVꢀbody.ꢀ
Thisꢀconfigurationꢀalsoꢀoffersꢀlowerꢀinductanceꢀthanꢀmostꢀdiscreetꢀ
solutionsꢀresultingꢀinꢀimprovedꢀclampingꢀperformanceꢀtoꢀfastꢀoverꢀ
voltageꢀtransients.ꢀꢀ
Theꢀdeviceꢀhasꢀaꢀseparateꢀmicro-switch,ꢀwhichꢀcanꢀbeꢀusedꢀtoꢀ
indicateꢀthatꢀtheꢀMOVꢀhasꢀbeenꢀdisconnectedꢀfromꢀtheꢀcircuit.ꢀThisꢀ
separateꢀswitchꢀmakesꢀtheꢀmonitoringꢀcircuitryꢀcompletelyꢀisolatedꢀ
fromꢀtheꢀmainꢀpowerꢀwhichꢀensuresꢀindicatorꢀcircuitꢀsafetyꢀandꢀ
simplifiesꢀtheꢀcustomersꢀcircuitꢀdesign.
Agency Approvals
Agency
Agency File Number
Features
•ꢀ Maximumꢀsingleꢀ
surgeꢀcapabilityꢀ20ꢀkA,ꢀ
8/20ꢀwaveshape.ꢀꢀ
•ꢀ RecognizedꢀtoꢀULꢀ
1449ꢀ3rdꢀedition.
E320116
•ꢀ Lead-FreeꢀandꢀRoHSꢀ
compliant.
ꢀ•ꢀNominalꢀDischargeꢀ
CurrentꢀValue:ꢀ10kA.
•ꢀ Integratedꢀmicro-switchꢀforꢀ
indicationꢀcircuitry/design.
•ꢀ Intermediateꢀcurrentꢀ
rating:ꢀ50A/150A.
•ꢀ -45°Cꢀtoꢀ+75°Cꢀoperatingꢀ
temperature.
Applications
•ꢀ ꢀSPDꢀapplications
•ꢀ AC/DCꢀdistribution
•ꢀ IT/Dataꢀcenter
•ꢀ Powerꢀsupplier
•ꢀ Telecommunication
Absolute Maximum Ratings
•ꢀForꢀratingsꢀofꢀindividualꢀmembersꢀofꢀaꢀseries,ꢀseeꢀDeviceꢀRatingsꢀandꢀSpecificationsꢀchart.
Units
SMOV25S Series
Continous:
Steady State Applied Voltage:
ꢀ
DCꢀVoltageꢀRangeꢀ(VM(DC))
ACꢀVoltageꢀRangeꢀ(VM(AC)RMS
150ꢀtoꢀ970
115ꢀtoꢀ750
V
V
ꢀ
)
Transient:
ꢀ
Non-RepetitiveꢀSurgeꢀCurrent,ꢀ8/20µsꢀWaveformꢀ(ITM
)
20,000
170ꢀtoꢀ670
-45ꢀtoꢀ+75
-45ꢀtoꢀ+85
2500
A
J
ꢀ
Non-RepetitiveꢀEnergyꢀCapability,ꢀ2msꢀWaveformꢀ(WTM
)
OperatingꢀAmbientꢀTemperatureꢀRangeꢀ(TA)
StorageꢀTemperatureꢀRangeꢀ(TSTG
°C
°C
V
)
Hi-PotꢀEncapsulationꢀ(IsolationꢀVoltageꢀCapability)
IsolationꢀVoltageꢀCapabilityꢀ(whenꢀtheꢀthermalꢀdisconnectꢀopens)
HousingꢀInsulationꢀResistance
1500
V
>1,000
MΩ
CAUTION:ꢀStressesꢀaboveꢀthoseꢀlistedꢀinꢀ“AbsoluteꢀMaximumꢀRatings”ꢀmayꢀcauseꢀpermanentꢀdamageꢀtoꢀtheꢀdevice.ꢀThisꢀisꢀaꢀstressꢀonlyꢀratingꢀandꢀoperationꢀ
ofꢀtheꢀdeviceꢀatꢀtheseꢀorꢀanyꢀotherꢀconditionsꢀaboveꢀthoseꢀindicatedꢀinꢀtheꢀoperationalꢀsectionsꢀofꢀthisꢀspecificationꢀisꢀnotꢀimplied.
© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/23/14
Varistor Products
Thermally Protected Varistors > SMOV25S 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)
VMꢀ(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
162ꢀ
184.5ꢀ
216
198ꢀ
225.5ꢀ
264
295
100
100
100
100
3200
2800
2300
1900
SMOV25S111NP
SMOV25S131MP
130
335
390
450
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
Averageꢀpowerꢀdissipationꢀofꢀtransientsꢀshouldꢀnotꢀexceedꢀ1.5ꢀwatts
SameꢀratingsꢀandꢀspecificationsꢀapplyꢀtoꢀNonꢀIsolatedꢀMonitoredꢀSwitchꢀalternativeꢀdesign.ꢀReplaceꢀ"M"ꢀwithꢀ"N"ꢀinꢀtheꢀpartꢀnumber.ꢀe.g.:ꢀSMOV25S111NP.ꢀ
ReferꢀtoꢀPartꢀNumberꢀSystemꢀatꢀtheꢀendꢀofꢀthisꢀdocument.
© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/23/14
Varistor Products
Thermally Protected Varistors > SMOV25S Series
Peak Current & Energy Derating Curve
Thermal Characteristics
Forꢀapplicationsꢀexceedingꢀ75ºCꢀambientꢀtemperature,ꢀtheꢀ
peakꢀsurgeꢀcurrentꢀandꢀenergyꢀratingsꢀmustꢀbeꢀreducedꢀ
asꢀshownꢀbelow.
TypicalꢀtimeꢀtoꢀopenꢀcircuitꢀunderꢀULꢀ1449ꢀAbnormalꢀ
OvervoltageꢀLimitedꢀCurrentꢀTest:
10
100
80
60
40
20
0
Typical
10 A
1
5 A
2.5 A
0.5 A
- 45
50
60
70
80
90
100
110
120
130
AMBIENTTEMPERATURE (ºC)
0.1
1
10
100
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
© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/23/14
Varistor Products
Thermally Protected Varistors > SMOV25S Series
SMOV25S Pulse Rating Curve
100000
1
2
10000
15
102
103
1000
104
105
106
100
∞
10
1
Figure 4
10
100
1000
10000
Impulse Duration (secs)
Wave Solder Profile
BecauseꢀtheꢀSMOV25SꢀSeriesꢀvaristorsꢀcontainꢀaꢀthermalꢀprotec-
tionꢀdevice,ꢀcareꢀmustꢀbeꢀtakenꢀwhenꢀsolderingꢀtheꢀdevicesꢀintoꢀ
place.ꢀTwoꢀsolderingꢀmethodsꢀareꢀpossible.ꢀFirstly,ꢀhandꢀsoldering:ꢀ
Itꢀisꢀrecommendedꢀtoꢀheat–sinkꢀtheꢀleadsꢀofꢀtheꢀdevice.ꢀSecondly,ꢀ
wave–soldering:ꢀꢀItꢀisꢀcriticallyꢀimportantꢀthatꢀallꢀpreheatꢀstageꢀandꢀ
theꢀsolderꢀbathꢀtemperaturesꢀareꢀrigidlyꢀcontrolled.
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
TIME(MINUTES)
TIME(MINUTES)
Figure 5
Figure 6
Environmental Specifications
Physical Specifications
Operating/StorageTemp. -45°Cꢀtoꢀ+75°Cꢀꢀ/ꢀꢀ-45°Cꢀtoꢀ+85°C
Lead Material
Tin–plated
+75°C,ꢀ1000ꢀhoursꢀ
Passive Aging
Soldering
Characteristics
SolderabilityꢀperꢀMIL-STD-202,ꢀꢀ
Methodꢀ208E
-/+10%ꢀtypicalꢀvoltageꢀchange
+75°C,ꢀ85%R.H.,ꢀ1000ꢀhoursꢀ
Humidity Aging
-/+10%ꢀtypicalꢀvoltageꢀchange
Cured,ꢀflameꢀretardantꢀepoxyꢀpolymerꢀ
meetsꢀUL94V-0ꢀrequirements
Insulating Material
Device Labeling
+75°Cꢀtoꢀ-40°Cꢀ5ꢀtimesꢀ
Thermal Shock
-/+10%ꢀtypicalꢀvoltageꢀchange
MarkedꢀwithꢀLF,ꢀvoltage,ꢀULꢀlogos,ꢀandꢀ
dateꢀcode
Solvent Resistance
Moisture Sensitivity
MIL-STD-202,ꢀMethodꢀ215F
Levelꢀ1,ꢀJ-STD-020C
© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/23/14
Varistor Products
Thermally Protected Varistors > SMOV25S Series
Product Dimensions
Lead Configuration
31Max
16.5Max
Galvanic isolation
P1
LF9
LF 9
SMOVXXS321MP
1209
SMOV25S321MP
1148
Thermal
disconnect
S1 ON
(Normal Close)
S3 Common
1.3±±.3
±.3±±.2
MOV
2±±.3
S2 S3 S1
1.4±±.2
S2 OFF
(Normal open)
P1
P2
P2
3.5±±.2
13.4±±.2
3*±.6±±.2
±.5±±.2
3.5±±.2
S2 S3 S1
P1
P2
Primary side
Secondary side
4.±±1. 2
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
© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/23/14
Varistor Products
Thermally Protected Varistors > SMOV25S Series
Part Marking System
Part Numbering System
UL Recognized
SMOV 25 S 321 N P Xxxxx
Component Mark
Production Site Code
Littelfuse Mark
DEVICE FAMILY
LittelfuseThermally Self Protected MOV
DISC SIZE (mm)
LF9
SMOV25S321MP
1148
25mm
Part Number
CERAMIC SHAPE
S: Square
Production Date Dode
(Year and Week)
V
M(AC)RMS
115V to 750V
M:With Isolated Monitored Switch
N: Non Isolated Monitored Switch Design
P: Lead-Free and RoHS compliant
Option Codes
Term Definitions
UL 1449
Rated AC Voltage (VM(AC)RMS) – MCOV
ThisꢀisꢀtheꢀmaximumꢀcontinuousꢀsinusoidalꢀRMSꢀvoltageꢀ
thatꢀmayꢀbeꢀapplied.ꢀThisꢀvoltageꢀmayꢀbeꢀappliedꢀatꢀanyꢀ
temperatureꢀupꢀtoꢀtheꢀmaximumꢀoperatingꢀtemperatureꢀofꢀ
theꢀdevice.
AnꢀUnderwritersꢀLaboratoryꢀstandardꢀcoveringꢀtheꢀsafetyꢀ
requirementsꢀforꢀSurgeꢀProtectiveꢀDevicesꢀintendedꢀforꢀ
permanentlyꢀconnected,ꢀcord-connectedꢀandꢀdirectꢀplug-inꢀ
applications.
Limited Current Abnormal Over-voltageTest
AnꢀACꢀover-voltageꢀconditionꢀappliedꢀtoꢀaꢀSurgeꢀProtectiveꢀ
DeviceꢀaccordingꢀtoꢀULꢀ1449,ꢀSectionꢀ39.4.ꢀTheꢀshortꢀcircuitꢀ
currentꢀisꢀlimitedꢀbyꢀseriesꢀconnectedꢀresistorsꢀtoꢀ10A,ꢀ
5A,ꢀ2.5A,ꢀ0.5Aꢀandꢀ0.125A.ꢀTheꢀconditionꢀisꢀmaintainedꢀ
forꢀ7ꢀhoursꢀorꢀuntilꢀtheꢀdeviceꢀunderꢀtestꢀisꢀdisconnectedꢀ
fromꢀtheꢀACꢀsupplyꢀorꢀtheꢀcurrentꢀorꢀtemperatureꢀreachesꢀ
equilibrium.
Maximum Non-Repetitive Surge Current (ITM
)
Thisꢀisꢀtheꢀmaximumꢀpeakꢀcurrentꢀwhichꢀmayꢀbeꢀappliedꢀ
forꢀaꢀsingleꢀ8/20µsꢀimpulse,ꢀwithꢀratedꢀlineꢀvoltageꢀalsoꢀ
applied,ꢀwithoutꢀcausingꢀdeviceꢀfailure.ꢀTheꢀpulseꢀcanꢀ
beꢀappliedꢀtoꢀtheꢀdeviceꢀinꢀeitherꢀpolarityꢀwithꢀtheꢀsameꢀ
confidenceꢀfactor.ꢀ
Nominal Discharge Current (IN)
Peakꢀvalueꢀofꢀtheꢀcurrent,ꢀselectedꢀbyꢀtheꢀmanufacturer,ꢀ
throughꢀtheꢀSPDꢀhavingꢀaꢀcurrentꢀwaveshapeꢀofꢀ8/20µsꢀ
whereꢀtheꢀSPDꢀremainsꢀfunctionalꢀafterꢀ15ꢀsurges.
Maximum Non-Repetitive Surge Energy (WTM
)
Thisꢀisꢀtheꢀmaximumꢀratedꢀtransientꢀenergyꢀwhichꢀmayꢀbeꢀ
dissipatedꢀforꢀaꢀsingleꢀcurrentꢀpulseꢀatꢀaꢀspecifiedꢀimpulseꢀ
duration,ꢀwithꢀtheꢀratedꢀRMSꢀvoltageꢀapplied,ꢀwithoutꢀ
causingꢀdeviceꢀfailure.
Voltage Protection Rating (VPR
)
Aꢀratingꢀselectedꢀfromꢀaꢀlistꢀofꢀpreferredꢀvaluesꢀasꢀgivenꢀ
inꢀULꢀ1449ꢀandꢀassignedꢀtoꢀeachꢀmodeꢀofꢀprotection.ꢀTheꢀ
valueꢀofꢀVPRꢀisꢀdeterminedꢀasꢀtheꢀnearestꢀhighestꢀvalueꢀ
takenꢀfromꢀULꢀ1449ꢀtoꢀtheꢀmeasuredꢀlimitingꢀvoltageꢀ
determinedꢀduringꢀtheꢀtransient-voltageꢀsurgeꢀsuppressionꢀ
testꢀusingꢀtheꢀcombinationꢀwaveꢀgeneratorꢀatꢀaꢀsettingꢀofꢀ
6kV,ꢀ3kA.
Nominal Voltage (VN(DC)
)
Thisꢀisꢀtheꢀvoltageꢀatꢀwhichꢀtheꢀdeviceꢀchangesꢀfromꢀtheꢀ
offꢀ(standbyꢀstate)ꢀtoꢀtheꢀonꢀ(clampingꢀstate)ꢀandꢀentersꢀ
itsꢀconductionꢀmodeꢀofꢀoperation.ꢀTheꢀvoltageꢀvalueꢀisꢀ
usuallyꢀcharacterisedꢀatꢀtheꢀ1mAꢀpointꢀandꢀhasꢀaꢀspecifiedꢀ
minimumꢀandꢀmaximumꢀvoltageꢀrange.
© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/23/14
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