TMOV®, iTMOV® Varistor Series Datasheet by Littelfuse Inc.

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Specifications are subject to change without notice.

Revised: 10/01/19

Metal-Oxide Varistors (MOVs)

Radial Lead Varistors > TMOV® and iTMOV® Varistor Series

RoHS

Description

Features

• RoHS compliant

Halogen-Free and

Lead–free available

• Designed to facilitate

compliance to UL1449

for SPD products

• High peak surge current

rating up to 10kA

• Wave solderable

• Standard lead form

and spacing option

• -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 Agency Approval Agency File Number

UL1449 E320116

QC 42201-C001,

QC 42201-A001,

IEC 60950-1 (Annex Q) IECQ-C BSI 15.0009

IEC 61051-1,

IEC 61051-2,

IEC 60950-1 (Annex Q) 40021525

TMOV® and iTMOV® 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 Metal Oxide Varistors (MOVs) 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

configuration 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.

Additional Information

Datasheet Samples

Resources

Datasheet Samples

Resources

iTMOV

TMOV

iTMOV

TMOV

iTMOV

TMOV

Specifications are subject to change without notice.

Revised: 10/01/19

Metal-Oxide Varistors (MOVs)

Radial Lead Varistors > TMOV® and iTMOV® Varistor Series

Ratings & Specifications

TMOV® Varistor

Lead–free And RoHS

Compliant Models

iTMOV® Varistor

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

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 184.5 225.5 340 50 1000

TMOV20RP130E P2T130E TMOV20RP130M P2T130M

20 130 170 100 10000 6500 184.5 225.5 340 100 1900

TMOV14RP140E P4T140E TMOV14RP140M P4T140M

14 140 180 55 6000 4500 198 242 360 50 900

TMOV20RP140E P2T140E TMOV20RP140M P2T140M

20 140 180 110 10000 6500 198 242 360 100 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 216 264 395 100 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 283 345 530 50 630

TMOV20RP200E P2T200E TMOV20RP200M P2T200M

20 200 260 154 10000 6500 283 345 530 100 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 1100

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 612 748 1120 50 300

TMOV20RP420E P2T420E TMOV20RP420M P2T420M

20 420 560 320 10000 6500 612 74 8 1120 100 600

TMOV14RP460E P4T460E TMOV14RP460M P4T460M

14 460 610 180 6000 4500 675 825 1240 50 220

TMOV20RP460E P2T460E TMOV20RP460M P2T460M

20 460 610 360 10000 6500 675 825 1240 100 200

TMOV14RP510E P4T510E TMOV14RP510M P4T510M

14 510 670 185 6000 4500 738 902 1355 50 200

TMOV20RP510E P2T510E TMOV20RP510M P2T510M

20 510 670 325 10000 6500 738 902 1355 100 350

TMOV14RP550E P4T550E TMOV14RP550M P4T550M

14 550 715 190 6000 4500 819 1001 1500 50 180

TMOV20RP550E P2T550E TMOV20RP550M P2T550M

20 550 715 360 10000 6500 819 1001 1500 100 300

Absolute Maximum Ratings

Continuous TMOV® and iTMOV® Varistor 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 specification is not implied.

• For ratings of individual members of a series, see Device Ratings and Specifications chart

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Specifications are subject to change without notice.

Revised: 10/01/19

Metal-Oxide Varistors (MOVs)

Radial Lead Varistors > TMOV® and iTMOV® Varistor 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.

Figure 1. Thermal Characteristics

* Figure 4: Typical time to open circuit under UL1449

Abnormal Overvoltage Limited Current Test

0.1

10 10 0100010000

Time(s)

0.125A

0.5A

2.5A

Typical

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

200V

460V

510V

550V

575V

625V

750V

Figure 3. Maximum Clamping Voltage for 14mm Parts Figure 4. Maximum Clamping Voltage for 20mm Parts

100

1000

10000

0.000001 0.000010.0001 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

200V

460V

510V

550V

575V

625V 750V

300V

Ratings & Specifications

TMOV® Varistor

Lead–free And RoHS

Compliant Models

iTMOV® Varistor

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

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)

TMOV14RP575E P4T575E TMOV14RP575M P4T575M

14 575 730 195 6000 4500 857 1047 1568 50 170

TMOV20RP575E P2T575E TMOV20RP575M P2T575M

20 575 730 375 10000 6500 857 1047 1568 100 275

TMOV14RP625E P4T625E TMOV14RP625M P4T625M

14 625 825 200 6000 4500 900 1100 1650 50 160

TMOV20RP625E P2T625E TMOV20RP625M P2T625M

20 625 825 400 10000 6500 900 1100 1650 100 250

TMOV14RP750E P4T750E TMOV14RP750M P4T750M

14 750 970 210 6000 4500 1080 1320 1980 50 140

TMOV20RP750E P2T750E TMOV20RP750M P2T750M

20 750 970 480 10000 6500 1080 1320 1980 100 175

100

-55 50 60 70 80 90 10 0110 120130

AMBIENT TEMPERATURE ( oC)

PERCENT OF RATED VALUE

Figure 2. Current, Energy, Power Derating Curve

For applications exceeding 85°C ambient temperature, the peak

surge current and energy ratings must be reduced as shown

above.

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Specifications are subject to change without notice.

Revised: 10/01/19

Metal-Oxide Varistors (MOVs)

Radial Lead Varistors > TMOV® and iTMOV® Varistor Series

Figure 5. Repetitive Surge Capability for 14mm Parts Figure 6. 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 -55°C to +85°C

Humidity Aging +85°C, 85% RH , 1000 hours

+/-10% typical voltage change

Thermal Shock +85°C to -55°C 5 times

+/-10% typical voltage change

Solvent Resistance MIL–STD–202, Method 215

Moisture Sensitivity Level 1, J-STD-020

Lead Material Copper clad steel wire

Soldering

Characteristics

Solderability per MIL–STD–202,

Method 208

Insulating

Material

Cured, flame retardant epoxy polymer meets UL94 V–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.

100

150

200

250

300

00.5 11.5 22.5 33.5

TIME(MINUTE

TEMPERATURE (ºC)

Maximum Wave 240C

Figure 8. Lead–free Profile

100

150

200

250

300

00.5 11.5 22.5 33.5

TIME(MINUTES)

TEMPERATURE (ºC)

Maximum Wave 260C

Figure 7. Non Lead–free Profile

Figure 9: Pulse Rating Curves for 20mm types

100

1000

10000

10 100 1000 10000

Impulse Duration (μs)

Peak Current (A)

102

103

104

105

106

Figure 8: Pulse Rating Curves for 14mm types

100

1000

10000

10 100 1000 10000

Impulse Duration (µs)

eak Current (A)

115

102

103

104

105

106

Note: Repetitive surge capability is qualified and tested based on 8/20us current waveform (not combination waveform) and UL1449 40.7.3 (Edition 4) test condition

Specifications are subject to change without notice.

Revised: 10/01/19

Metal-Oxide Varistors (MOVs)

Radial Lead Varistors > TMOV® and iTMOV® Varistor Series

Thermal

Fuse

Element

MOV

Thermal

Fuse

Element

MOV

Monitor Lead

Lead Configurations

TMOV® Varistor iTMOV® Varistor

iTMOV® Varistor Application Examples

The application examples below show how the indicator lead on the iTMOV® varistor can be used to indicate that the

thermal element has been opened. This signifies that the circuit is no longer protected from transients by the MOV.

LED

Line Fuse

iTMOV Varistor

Neutral

Line

Figure 1. Application example 1

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)

To Protected Circuit To Protected Circuit To Protected Circuit

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.

LED

Line Fuse

iTMOV Varistor

Neutral

Line

Figure 1. Application example 1

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)

To Protected Circuit To Protected Circuit To Protected Circuit

Line

LED

Line Fuse

iTMOV Varistor

Neutral

Line

Figure 1. Application example 1

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)

To Protected Circuit To Protected Circuit To Protected Circuit

Line

Please note: Indicator circuits are provided as a

guideline only. Verification of actual indicator circuitry

is the responsibility of the end user. Component

values selected must be appropriate for the specific

AC line voltage service and application.

Specifications are subject to change without notice.

Revised: 10/01/19

Metal-Oxide Varistors (MOVs)

Radial Lead Varistors > TMOV® and iTMOV® Varistor Series

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)

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)

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)

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 0 2.0 (0.079) 0 2.0 (0.079) 0 2.0 (0.079) 0 2.0 (0.079)

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* 0 2.0 (0.079) 0 2.0 (0.079) 0 2.0 (0.079) 0 2.0 (0.079)

e2 ALL n/a n/a n/a n/a 4.0 (0.157) 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)

115-175 -- 9.0 (0.354) -- 9.0 (0.354) -- 9.0 (0.354) -- 9.0 (0.354)

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 -- 12.0 (0.472) -- 12.0 (0.472) -- 12.0 (0.472) -- 12.0 (0.472)

625-750 -- 13.0 (0.512) -- 13.0 (0.512) -- 13.0 (0.512) -- 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 0.76 (0.030) 0.86 (0.034) 0.95 (0.037) 1.05 (0.041) 0.76 (0.030) 0.86 (0.034) 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:

* Tape and Reel packaging option is available only for devices up to 420Vrms.

ee1 e1

ee2

Dia DDia D

Dia bDia b

Dia c

Monitor

Lead

TMOV® Varistor

Straight Lead Forms

iTMOV® Varistor

ee1 e1

ee2

Dia DDia D

Dia bDia b

Dia c

Monitor

Lead

TMOV® Varistor

(outer crimp)

iTMOV® Varistor

(inner crimp)

Curved Lead Forms

Seating

Plane

Specifications are subject to change without notice.

Revised: 10/01/19

Metal-Oxide Varistors (MOVs)

Radial Lead Varistors > TMOV® and iTMOV® Varistor Series

Description

Crimped Leads Straight Leads

Model Size Model Size

14mm 20mm 14mm 20mm

B1Component Top to Seating Plane 22.5 Max 31 Max 22.0 Max 28.0 Max

PPitch of Component 25.4 +/- 1.0 25.4 +/- 1.0 25.4 ±1.0 25.4 ±1.0

P0Feed Hole Pitch 12.7 +/- 0.2 12.7 +/- 0.2 12.7 ±0.2 12.7 ±0.2

P1Feed Hole Center to Pitch 8.95 +/- 0.7 8.95 +/- 0.7 8.95 ±0.7 8.95 ±0.7

P2Hole Center to Component Center 12.7 +/- 0.7 12.7 +/- 0.7 12.7 ±0.7 12.7 ±0.7

FLead to Lead Distance 7.5 +/- 0.8 7.5 +/- 0.8 7.5 ±0.8 7.5 ±0.8

Δh Component Alignment 2.0 Max 2.0 Max 2.0 Max 2.0 Max

WTape Width 18.0 +1.0/-0.5 18.0 +1.0/-0.5 18.0 +1.0/-0.5 18.0 +1.0/-0.5

W0Hold Down Tape Width 12.0 +/- 0.3 12.0 +/- 0.3 12.0 ±0.3 12.0 ±0.3

W1Hole Position 9.0 +0.75/-0.50 9.0 +0.75/-0.50 9.0 +0.75/-0.5 9.0 +0.75/-0.5

W2Hold Down Tape Position 0.5 Max 0.5 Max 0.5 Max 0.5 Max

HHeight from Tape Centre to Component Base

(non-crimped parts) -- -- 18.0 +2.0/-0 18.0 +2.0/-0

H0Seating Plane Height (crimped parts only) 16.0 +/- 0.5 16.0 +/- 0.5 -- --

H1Component Height 40.0 Max 46.5 Max 40.0 Max 46.5 Max

CCrimp Length (crimped parts only) 2.6 typ 2.6 typ -- --

D0Feed Hole Diameter 4.0 +/- 0.2 4.0 +/- 0.2 4.0 ±0.2 4.0 ±0.2

tTotal Tape Thickness 0.7 +/- 0.2 0.7 +/- 0.2 0.7 ±0.2 0.7 ±0.2

LLength of Clipped Lead 11.0 Max 11.0 Max 11.0 Max 11.0 Max

Δp Component Alignment 3 Max. 1.00mm 3 Max 3 deg Max,

1.0mm Max 3 deg Max,

1.0mm Max

Tape and Reel Specification

SEATING

PLANE

Øb

P2 ∆P

∆H

∆P

ØD0

Øb

P2 ∆P

∆H

∆P

ØD0

TMOV® VARISTOR WITH OUTER CRIMP

TMOV® VARISTOR WITH STRAIGHT LEADS

SEATING

PLANE

Øb

P2 ∆P

∆H

∆P

ØD0

Øb

P2 ∆P

∆H

∆P

ØD0

iTMOV® VARISTOR WITH INNER CRIMP

iTMOV® VARISTOR WITH STRAIGHT LEADS

NOTES:

• Dimensions in mm

• Reel capacity varies with voltage.

• Leads are crimped and in-line. This

excludes the monitor lead on iTMOV®

varistor which are not crimped and not

in-line.

• To order tape and reel option please

add suffix '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.

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Specifications are subject to change without notice.

Revised: 10/01/19

Metal-Oxide Varistors (MOVs)

Radial Lead Varistors > TMOV® and iTMOV® Varistor Series

Part Numbering System

TMOV 20 RE150

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

L3T7: Lead Form: Straight Leads and In-Line2 Leads

Packing: Tape and Reel

Lead Spacing: 7.5mm

Option Codes:

X2855: Nickel Barrier coated wire option --

All standard parts use tinned copper clad steel wire.

Nickel Barrier coated wire is available as an option,

consisting of Copper wire with a flashing of Nickel

followed by a top coating of Tin. To order append standard

model BASE PART number with "X2855." Example:

Standard Model Order As

TMOV20RP115E TMOV20RP115EX2855

Other non-standard options may be available - please contact Littelfuse.

Base Part Codes

(See ratings & specifications tables and notes below)

Option Codes1

(See below)

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.

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.