Varistor Products
©2011 Littelfuse, Inc.
Revision: September 25, 2011
TMOV® and i TMOV® Varistor Series
Radial Lead Varistors > TMOV® and iTMOV® Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/tmov.html for current information.
TMOV®/iTMOV® Series
RoHS
Description
Features
• RoHScompliantand
Lead–freeavailable
• Patentedintegrated
thermalprotectiondevice
-Patent#US6636403
• Designedtofacilitate
complianceto
UL14493ndEdition
forSPDproduct
• Highpeaksurgecurrent
ratingupto10kA
• Wavesolderable
• Standardleadform
andspacingoption
• Lowleakage
• -55°Cto+85°C
operatingtemprange
• Three-leadversion
availableforindication
purposes
Agency Approvals
Applications
• SPDProducts
• ACPanelProtection
Modules
• ACLinePowerSupplies
• SurgeProtected
StripConnectors
• ACPowerMeters
• RelocatableAC
PowerTaps
• GFCI(GroundFault
CurrentInterupter)
• UPS(Uninterruptable
PowerSupply)
• WhiteGoods
• Plug-inSPD
• Inverters
• AC/DCPowerSupplies
Agency Approval Agency File Number
UL1414 E56529
UL1449 E320116
QC42201-C001,
QC42201-A001,
IEC60950-1(AnnexQ)
E1274/F
IEC61051-1,
IEC61051-2,
IEC60950-1(AnnexQ)
40021525
TMOV® and i TMOV® Varistor Series
TheLittelfuseTMOV®andiTMOV®thermallyprotected
varistorsrepresentanewdevelopmentinintegrated
circuitprotection.Bothversionsarecomprisedofradial
leadedMOVs(MetalOxideVaristors)withanintegrated
thermallyactivatedelementdesignedtoopeninthe
eventofoverheatingduetotheabnormalovervoltage,
limitedcurrent,conditionsoutlinedinUL1449.TheTMOV®
andiTMOV®varistor’sintegratedthermalelement,in
conjunctionwithappropriateenclosuredesign,helps
facilitateSPDmodulecompliancetoUL1449forbothcord
connectedandpermanentlyconnectedapplications.
TheTMOV®andiTMOV®varistorsofferquickthermal
responseduetothecloseproximityoftheintegrated
thermalelementtotheMOVbody.Theintegrated
congurationalsoofferslowerinductancethanmost
discretesolutionsresultinginimprovedclamping
performancetofastovervoltagetransients.
TheiTMOV®varistordiffersfromtheTMOV®varistorbythe
inclusionofathirdleadforthepurposeofindicatingthat
theMOVhasbeendisconnectedfromthecircuit.Thislead
facilitatesconnectiontomonitoringcircuitry.
AdditionallyTMOV®andiTMOV®varistorsarewave
solderable,thussimplifyingendproductassemblyby
reducingthetheexpenseandreworkassociatedwithhand
solderingoperations.
Varistor Products
©2011 Littelfuse, Inc.
Revision: September 25, 2011
TMOV® and i TMOV® Varistor Series
Radial Lead Varistors > TMOV® and iTMOV® Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/tmov.html for current information.
TMOV and iTMOV® Ratings & Specifications
TMOV
Lead–free And RoHS
Compliant Models
iTMOV
Lead–free and RoHS
Compliant Models Disc
Diameter
Maximum Rating (85°C) Specifications (25°C)
Continuous Transient Varistor
Voltage at
1mA Test
Current
Maximum
Clamping
Voltage
8/20µs
Typical
Capaci-
tance
f = 1MHz
AC
Volts
DC
Volts
Energy
2ms
Peak Surge
Current 8/20µs
Part
Number Branding Part
Number Branding VM(AC)RMS VM(DC) WTM
ITM 1 ×
Pulse
ITM 2 ×
Pulse
VN(DC)
Min
VN(DC)
Max VCIPK C
(mm) (V) (V) (J) (A) (A) (V) (V) (A) (pF)
TMOV14RP115E P4T115E TMOV14RP115M P4T115M
14 115 150 35 6000 4500 162 198 300 50 110 0
TMOV20RP115E P2T115E TMOV20RP115M P2T115M
20 115 150 52 10000 6500 162 198 300 100 2400
TMOV14RP130E P4T130E TMOV14RP130M P4T130M
14 130 170 50 6000 4500 184 226 340 50 1000
TMOV20RP130E P2T130E TMOV20RP130M P2T130M
20 130 170 100 10000 6500 184 226 340 100 1900
TMOV14RP140E P4T140E TMOV14RP140M P4T140M
14 140 180 55 6000 4500 200 240 360 50 900
TMOV20RP140E P2T140E TMOV20RP140M P2T140M
20 140 180 110 10000 6500 200 240 360 100 1750
TMOV14RP150E P4T150E TMOV14RP150M P4T150M
14 150 200 60 6000 4500 216 264 395 50 800
TMOV20RP150E P2T150E TMOV20RP150M P2T150M
20 150 200 120 10000 6500 216 264 395 10 0 1600
TMOV14RP175E P4T175E TMOV14RP175M P4T175M
14 175 225 70 6000 4500 243 297 455 50 700
TMOV20RP175E P2T175E TMOV20RP175M P2T175M
20 175 225 135 10000 6500 243 297 455 100 1400
TMOV14RP200E P4T200E TMOV14RP200M P4T200M
14 200 260 75 6000 4500 281 344 530 50 630
TMOV20RP200E P2T200E TMOV20RP200M P2T200M
20 200 260 154 10000 6500 281 344 530 100 1250
TMOV14RP230E P4T230E TMOV14RP230M P4T230M
14 230 300 80 6000 4500 324 396 595 50 550
TMOV20RP230E P2T230E TMOV20RP230M P2T230M
20 230 300 160 10000 6500 324 396 595 100 110 0
TMOV14RP250E P4T250E TMOV14RP250M P4T250M
14 250 320 100 6000 4500 351 429 650 50 500
TMOV20RP250E P2T250E TMOV20RP250M P2T250M
20 250 320 170 10000 6500 351 429 650 100 1000
TMOV14RP275E P4T275E TMOV14RP275M P4T275M
14 275 350 110 6000 4500 387 473 710 50 450
TMOV20RP275E P2T275E TMOV20RP275M P2T275M
20 275 350 190 10000 6500 387 473 710 100 900
TMOV14RP300E P4T300E TMOV14RP300M P4T300M
14 300 385 125 6000 4500 423 517 775 50 400
TMOV20RP300E P2T300E TMOV20RP300M P2T300M
20 300 385 250 10000 6500 423 517 775 100 800
TMOV14RP320E P4T320E TMOV14RP320M P4T320M
14 320 420 136 6000 4500 459 561 840 50 380
TMOV20RP320E P2T320E TMOV20RP320M P2T320M
20 320 420 270 10000 6500 459 561 840 100 750
TMOV14RP385E P4T385E TMOV14RP385M P4T385M
14 385 505 150 6000 4500 558 682 1025 50 360
TMOV20RP385E P2T385E TMOV20RP385M P2T385M
20 385 505 300 10000 6500 558 682 1025 100 700
TMOV14RP420E P4T420E TMOV14RP420M P4T420M
14 420 560 160 6000 4500 612 74 8 112 0 50 300
TMOV20RP420E P2T420E TMOV20RP420M P2T420M
20 420 560 320 10000 6500 612 74 8 112 0 100 600
TMOV20RP460E P2T460E TMOV20RP460M P2T460M
20 460 610 360 10000 6500 675 825 1240 100 200
TMOV20RP510E P2T510E TMOV20RP510M P2T510M
20 510 670 325 10000 6500 738 902 1355 10 0 350
TMOV20RP550E P2T550E TMOV20RP550M P2T550M
20 550 715 360 10000 6500 819 1001 1500 100 300
TMOV20RP575E P2T575E TMOV20RP575M P2T575M
20 575 730 375 10000 6500 856 1047 1568 100 275
TMOV20RP625E P2T625E TMOV20RP625M P2T625M
20 625 825 400 10000 6500 900 110 0 1650 100 250
TMOV20RP750E P2T750E TMOV20RP750M P2T750M
20 750 970 480 10000 6500 1080 1320 1980 10 0 175
NOTE:For14mmdeviceswithavoltageratinggreaterthan420V,pleasecontactfactoryregardingavailability.
Absolute Maximum Ratings
•Forratingsofindividualmembersofaseries,seeDeviceRatingsandSpecicationschart
Continuous TMOV® and iTMOV® Series Units
Steady State Applied Voltage:
ACVoltageRange(VM(AC)RMS) 115to750 V
Transient:
Peak Pulse Current (ITM) - For8x20µsCurrentWave,singlepulse 6,000to10,000 A
Single-Pulse Energy Capability - For2msCurrentWave 35to480 J
OperatingAmbientTemperatureRange(TA) -55to+85 °C
StorageTemperatureRange(TSTG) -55to+125 °C
TemperatureCoefficient(αV)ofClampingVoltage(VC)atSpecifiedTestCurrent <0.01 %/°C
Hi-PotEncapsulation(COATINGIsolationVoltageCapability) 2,500 V
ThermalProtectionIsolationVoltageCapability(whenoperated) 600 V
COATINGInsulationResistance 1,000 MΩ
IndicatorLeadRating(Lead-3-iTMOV®varistoronly):
ContinuousRMScurrent 100 mA
SurgeCurrent,8/20µs 10,000 A
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specicationisnotimplied.
Varistor Products
©2011 Littelfuse, Inc.
Revision: September 25, 2011
TMOV® and i TMOV® Varistor Series
Radial Lead Varistors > TMOV® and iTMOV® Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/tmov.html for current information.
TMOV®/iTMOV® Series
Note:TheTMOV®andiTMOV®varistorsareintended,
inconjunctionwithappropriateenclosuredesign,to
helpfacilitateSPDmodulecompliancetoUL1449,3rd
EditionSection39.4(abnormalovervoltagelimitedcurrent
requirements).Undertheseextremeabnormalovervoltage
conditions,someunitswillexhibitsubstantialheating,
arcingandventingpriortoopening.Modulesshouldbe
designedtocontainthispossibility.Applicationtestingis
stronglyrecommended.
Thermal Characteristics
* Figure 4: Typical time to open circuit under UL1449
Abnormal Overvoltage Limited Current Test
0.1
1
10
10 10 0100010000
Time(s)
0.125A
0.5A
2.5A
5A
Typical
For applications exceeding 85˚C ambient
temperature, the peak surge current and energy
ratings must be reduced as shown in Figure 5.
Figure 5: Peak Current & Energy Derating Curve
0
20
40
60
80
100
-555060708090100 110 120 130
AMBIENT TEMPERATURE (ºC)
PERCENT OF RATED VALU
E
Current, Energy, Power Derating Curve
100
1000
10000
0.000001 0.000010.0001 0.001 0.01 0.11 10 1001000 10000
Peak Current (A)
Clamping Voltage (V)
175V
150V
140V
130V
320V
300V
275V
250V
230V
Figure 6: V-I Characteristic Curves for 14mm Types
420V
385V
115V
Maximum Leakage Current
Maximum Clamping Voltage
14mm
200V
460V
510V
550V
575V
625V
750V
Maximum Clamping Voltage for 14mm Parts Maximum Clamping Voltage for 20mm Parts
100
1000
10000
0.000001 0.00001 0.0001 0.0010.010.1 110100 1000 10000
Peak Current (A)
Clamping Voltage (V)
175V
150V
140V
130V
320V
275V
250V
230V
Figure 7: V-I Characteristic Curves for 20mm Types
420V
385V
115V
Maximum Leakage Current
Maximum Clamping Voltage
20mm
200V
460V
510V
550V
575V
625V 750V
300V
Forapplicationsexceeding85°Cambienttemperature,the
peaksurgecurrentandenergyratingsmustbereducedas
shownabove.
Figure 1 Figure 2
Figure 3 Figure 4
Varistor Products
©2011 Littelfuse, Inc.
Revision: September 25, 2011
TMOV® and i TMOV® Varistor Series
Radial Lead Varistors > TMOV® and iTMOV® Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/tmov.html for current information.
Repetitive Surge Capability for 14mm Parts Repetitive Surge Capability for 20mm Parts
Wave Solder Profile
NOTE:Averagepowerdissipationoftransientsshouldnotexceed0.6W NOTE:Averagepowerdissipationoftransientsshouldnotexceed1.0W
Operating/Storage
Temperature -40°Cto+85°C
Passive Aging +85°C,1000hours
+/-10%typicalvoltagechange
Humidity Aging +85°C,85%RH,1000hours
+/-10%typicalvoltagechange
Thermal Shock +85°Cto-40°C5times
+/-10%typicalvoltagechange
Solvent Resistance MIL–STD–202,Method215F
Moisture Sensitivity Level1,J–STD–020C
Lead Material
NonLead–freeparts:Soldercoated
Copperwire,orTin–coatedCopperwire
Lead–freeparts:Tin–coatedCopperwire
Soldering
Characteristics
SolderabilityperMIL–STD–202,
Method208E
Insulating Material Cured,ameretardantepoxypolymer
meetsUL94V–0requirements
Device Labeling MarkedwithLF,voltage,UL/CSAlogos,
anddatecode
Physical Specifications Environmental Specifications
BecausetheTMOV®andiTMOV®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solder-
ing:Itiscriticallyimportantthatallpreheatstageandthesolderbathtemperaturesarerigidlycontrolled.
0
50
100
150
200
250
300
00.5 11.5 22.5 33.5 4
TIME(MINUTES)
TEMPERATURE (ºC)
Maximum Wave 240C
Lead–free Profile
0
50
100
150
200
250
300
00.5 11.5 22.5 33.5 4
TIME(MINUTES)
TEMPERATURE (ºC)
Maximum Wave 260C
Non Lead–free Profile
Figure 9: Pulse Rating Curves for 20mm types
1
10
100
1000
10000
10 100 1000 10000
Impulse Duration (μs)
Peak Current (A)
1
102
103
Model 20 mm
2
104
105
106
10
Figure 8: Pulse Rating Curves for 14mm types
1
10
100
1000
10000
10 100 1000 10000
Impulse Duration (µs)
P
eak Current (A)
110
102
103
Model 14 mm
2
104
105
106
Figure 5 Figure 6
Figure 7 Figure 8
Varistor Products
©2011 Littelfuse, Inc.
Revision: September 25, 2011
TMOV® and i TMOV® Varistor Series
Radial Lead Varistors > TMOV® and iTMOV® Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/tmov.html for current information.
TMOV®/iTMOV® Series
Lead Configurations
TMOV® Varistor iTMOV® Varistor
iTMOV® Varistor Application Examples
TheapplicationexamplesbelowshowhowtheindicatorleadontheiTMOV® canbeusedtoindicatethatthethermal
elementhasbeenopened.ThissigniesthatthecircuitisnolongerprotectedfromtransientsbytheMOV.
R
LED
Line Fuse
iTMOV Varistor
Neutral
Line
Figure 1. Application example 1
R
Line Fuse
iTMOV Varistor
Neutral
Figure 2. Application example 2
AC OPTOCOUPLER
TO STATUS
ANNUNCIATOR
LIGHT/ALARM
Line Fuse
iTMOV Varistor
Neutral
Figure 3. Application example 3
Fault LED
(Normallyoff)
"Load Powered"
neon lamp
Load Switch Relay
(loss of protection)
R
To Protected Circuit To Protected Circuit To Protected Circuit
Line
Line
Note:MOVsarenon-polarizedpassiveelements
Application Example 1
Inthiscase,theLEDisnormallyon,andisoffwhenthe
thermalelementopens.
Application Example 2
Thiscircuitutilizesanoptocouplertoprovide
galvanicisolationsbetweentheiTMOV®varistor
andtheindicatingoralarmcircuitry.
Application Example 3
Thiscircuitillustratestheuseofthemonitoringleadof
theiTMOV®varistortoensurethatequipmentisonly
operatedwhenovervoltageprotectionpresent.Innormal
operationtheloadswitchrelaysolenoidispoweredviathe
indicatorleadoftheiTMOV®varistor.Intheeventofthe
thermalelementbeingactivated,therelaywillde-activate,
cuttingpowertotheprotectedcircuitandthefaultLEDwill
illuminate.
R
LED
Line Fuse
iTMOV Varistor
Neutral
Line
Figure 1. Application example 1
R
Line Fuse
iTMOV Varistor
Neutral
Figure 2. Application example 2
AC OPTOCOUPLER
TO STATUS
ANNUNCIATOR
LIGHT/ALARM
Line Fuse
iTMOV Varistor
Neutral
Figure 3. Application example 3
Fault LED
(Normallyoff)
"Load Powered"
neon lamp
Load Switch Relay
(loss of protection)
R
To Protected Circuit To Protected Circuit To Protected Circuit
Line
Line
R
LED
Line Fuse
iTMOV Varistor
Neutral
Line
Figure 1. Application example 1
R
Line Fuse
iTMOV Varistor
Neutral
Figure 2. Application example 2
AC OPTOCOUPLER
TO STATUS
ANNUNCIATOR
LIGHT/ALARM
Line Fuse
iTMOV Varistor
Neutral
Figure 3. Application example 3
Fault LED
(Normallyoff)
"Load Powered"
neon lamp
Load Switch Relay
(loss of protection)
R
To Protected Circuit To Protected Circuit To Protected Circuit
Line
Line
Pleasenote:Indicatorcircuitsareprovidedasa
guidelineonly.Vericationofactualindicatorcircuitry
istheresponsibilityoftheenduser.Component
valuesselectedmustbeappropriateforthespecic
AClinevoltageserviceandapplication.
Varistor Products
©2011 Littelfuse, Inc.
Revision: September 25, 2011
TMOV® and i TMOV® Varistor Series
Radial Lead Varistors > TMOV® and iTMOV® Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/tmov.html for current information.
Device Dimensions
Dimension
VRMS
Voltage
Model
TMOV® Varistor iTMOV® Varistor
14mm Size 20mm Size 14mm Size 20mm Size
Min.
mm (in)
Max.
mm (in)
Min.
mm (in)
Max.
mm (in)
Min.
mm (in)
Max.
mm (in)
Min.
mm (in)
Max.
mm (in)
A
Straight Lead ALL 17.0(0.669) 22.0(0.866) 23.0(0.906) 28.0(1.10) 17.0(0.669) 22.0(0.866) 23.0(0.906) 28.0(1.10)
A
Crimped Lead ALL -- 22.5(0.886) -- 31.0(1.221) -- 22.5(0.886) -- 31.0(1.221)
Dia D ALL 13.5(0.531) 17.0(0.669) 19.0(0.748) 23.0(0.906) 13.5(0.531) 17.0(0.669) 19.0(0.748) 23.0(0.906)
eALL 6.5(0.256) 8.5(0.335) 6.5(0.256) 8.5(0.335) 6.5(0.256) 8.5(0.335) 6.5(0.256) 8.5(0.335)
e1
Bulk Pack
115-175 1.5(0.059) 4.0(0.157) 1.5(0.059) 4.0(0.157) 1.5(0.059) 4.0(0.157) 1.5(0.059) 4.0(0.157)
200-275 2.0(0.079) 4.5(0.177) 2.0(0.079) 4.5(0.177) 2.0(0.079) 4.5(0.177) 2.0(0.079) 4.5(0.177)
300-420 3.0(0.118) 5.5(0.217) 3.0(0.118) 5.5(0.217) 3.0(0.118) 5.5(0.217) 3.0(0.118) 5.5(0.217)
460-750 n/a n/a 0 2.0(0.079) n/a n/a 0 2.0(0.079)
e1
Tape & Reel and
In-Line Lead
115-420 0 2.0(0.079) 0 2.0(0.079) 0 2.0(0.079) 0 2.0(0.079)
460-550* n/a n/a 0 2.0(0.079) n/a n/a 0 2.0(0.079)
e2 ALL n/a n/a n/a n/a 4.0(0.138) 6.0(0.236) 4.0(0.157) 6.0(0.236)
e3 ALL n/a n/a n/a n/a 0 2.0(0.079) 0 2.0(0.079)
E
115-175 -- 9.0(0.335) -- 9.0(0.335) -- 9.0(0.335) -- 9.0(0.335)
200-275 -- 9.5(0.374) -- 9.5(0.374) -- 9.5(0.374) -- 9.5(0.374)
300-460 -- 11.0(0.433) -- 11.0(0.433) -- 11.0(0.433) -- 11.0(0.433)
510-575 -- n/a -- 12.0(0.472) -- n/a -- 12.0(0.472)
625-750 -- n/a -- 13.0(0.512) -- n/a -- 13.0(0.512)
LALL 25.4(1.00) -- 25.4(1.00) -- 25.4(1.00) -- 25.4(1.00) --
L3 ALL n/a n/a n/a n/a 6.0(0.236) -- 6.0(0.236) --
Dia b 115-420 0.76(0.030) 0.86(0.034) 0.76(0.030) 0.86(0.034) 0.76(0.030) 0.86(0.034) 0.76(0.030) 0.86(0.034)
460-750 n/a n/a 0.95(0.037) 1.05(0.041) n/a n/a 0.95(0.037) 1.05(0.041)
Dia c
OutsideLeadOnly ALL n/a n/a n/a n/a 0.76(0.030) 0.86(0.034) 0.76(0.030) 0.86(0.034)
NOTES:
For14mmratingsabove420VRMScontactfactoryforspecications.
*Itemsabove550VRMSarenotavailablepackagedastapeandreel(bulkpackonly)
E
ee1 e1
e3
e
e2
E
L
A
L3
Dia DDia D
Dia bDia b
Dia c
Monitor
Lead
TMOV
Straight Lead Forms
iTMOV
E
ee1 e1
e3
e
e2
E
L
A
L3
Dia DDia D
Dia bDia b
Dia c
Monitor
Lead
TMOV
(outer crimp)
iTMOV
(inner crimp)
Curved Lead Forms
Seating
Plane
Varistor Products
©2011 Littelfuse, Inc.
Revision: September 25, 2011
TMOV® and i TMOV® Varistor Series
Radial Lead Varistors > TMOV® and iTMOV® Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/tmov.html for current information.
TMOV®/iTMOV® Series
DESCRIPTION MODEL SIZE
14mm 20mm
B1
ComponentTopto
SeatingPlane 22.5Max 31Max
PPitchofComponent 25.4+/-1.0 25.4+/-1.0
P0FeedHolePitch 12.7+/-0.2 12.7+/-0.2
P1
FeedHoleCenterto
Pitch 8.95+/-0.7 8.95+/-0.7
P2
HoleCenterto
ComponentCenter 12.7+/-0.7 12.7+/-0.7
FLeadtoLeadDistance 7.5+/-0.8 7.5+/-0.8
Δh ComponentAlignment 2.0Max 2.0Max
WTapeWidth 18.0+1.0/-0.5 18.0+1.0/-0.5
W0HoldDownTapeWidth 12.0+/-0.3 12.0+/-0.3
W1HolePosition 9.0+0.75/-0.50 9.0+0.75/-0.50
W2
HoldDownTape
Position 0.5Max 0.5Max
H1ComponentHeight 40.0Max 46.5Max
D0FeedHoleDiameter 4.0+/-0.2 4.0+/-0.2
tTotalTapeThickness 0.7+/-0.2 0.7+/-0.2
LLengthofClippedLead 11.0Max 11.0Max
Δp ComponentAlignment 3Max.
1.00mm 3Max
CCrimpLength 2.6typ 2.6typ
H0SeatingPlaneHeight 16.0+/-0.5 16.0+/-0.5
Tape and Reel Specification
TMOV®VARISTORWITHOUTERCRIMP
iTMOV®VARISTORWITHINNERCRIMP
SEATING
PLANE
∆b
C
P2 DP
P
W2
t
F
W0
W
W1
DH
DH
DP
E
∆D0
P1
P0
H1
H0
B1
•Reelcapacityvarieswithvoltage.
•Leadsarecrimpedandin-line.ThisexcludesthemonitorleadoniTMOV®deviceswhich
arenotcrimpedandnotin-line.
•Toordertapeandreeloptionpleaseaddsufx'L2T7'toendofstandardpartnumber.
•Tapeandreeloptionisavailableforratedvoltagesupto420V.Contactfactoryregarding
availabilityofhighervoltages.
ContactLittelfuseforadditionaldetails.
Dimensionsinmm
Varistor Products
©2011 Littelfuse, Inc.
Revision: September 25, 2011
TMOV® and i TMOV® Varistor Series
Radial Lead Varistors > TMOV® and iTMOV® Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/tmov.html for current information.
Part Numbering System
TMOV20R E150
DEVICE FAMILY
Littelfuse Thermally Protected MOV
DISC DIAMETER (mm)
14 or 20mm
CERAMIC SHAPE
R: Round
SERIES DESIGNATOR
E: TMOV (2-Leaded, without indicator lead)
M: iTMOV (3-Leaded, with indicator lead option)
V
M(AC)RMS
115V to 750V
XXXXX
NON-STANDARD LEAD FORM, PACKAGING
and LEAD SPACING OPTIONS1:
L2B7: Lead Form: Crimped and In-Line2 Leads
Packaging: Bulk Pack
Lead Spacing3: 7.5mm
L2T7: Lead Form: Crimped and In-Line2 Leads
Packaging: Tape and Reel4
Lead Spacing3: 7.5mm
Other non-standard options may be available -
please contact Littelfuse.
Base Part Codes
(See ratings & specifications tables and notes below)
Option Codes1
(See below)
P
LEAD-FREE/RoHS
COMPLIANT INDICATOR
NOTES:
1 Use Base Part Code only to receive standard product:
Lead Form: Straight Leads. Devices greater than 420Vrms are provided In-Line2.
Packaging: Bulk Pack
Lead Spacing: 7.5mm +/-1.0mm
2 “In-Line” refers to straight row of leads at the tip where product is to contact the circuit board.
Refer to “e1” in Device Dimensions section.
3 Lead Spacing refers to span between leads as “e” dimension in Device Dimensions section.
4 Due to device bulk, tape and reel packaging option is available only for devices up to 420Vrms
Pack Quantities
Rated
Voltage
Pack Quantities
Bulk Pack Tape and Reel
Model Size Model Size
14mm 20mm 14mm 20mm
115-250 600 400 500 400
275-550 500 300 400 300
575-750 400 200 n/a n/a
NOTE:TapeandReelavailableupto420Vonly-pleasecontactfactoryregardingavailability
ofhighervoltageparts.