LITTELFUSE TMOV, iTMOV User Manual
Varistor Products
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Thermally Protected
TMOV®and iTMOV®Varistor Series
®
The Littelfuse TMOV and iTMOV thermally protected varistors represent a
new development in integrated circuit protection (patent pending). 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 over-voltage, limited current,
conditions outlined in UL1449.
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.
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 over-voltage
transients. Additionally, TMOV and iTMOV varistors are wave solderable,
thus simplifying end product assembly by reducing the expense and
rework associated with hand soldering operations.
The TMOV and iTMOV varistors are both recognized surge suppression
components to UL 1449. The TMOV and iTMOV varistor’s integrated
thermal element, in conjunction with appropriate enclosure design, helps
facilitate TVSS module compliance to UL1449 for both cord connected
and permanently connected applications.
TMOV and iTMOV varistors are compatible for use with industry standard
wave-soldering processes or recommended hand-soldering methods.
Features
• Patent Pending Integrated Thermal Protection Device
• Designed to facilitate compliance to UL1449 for TVSS 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 Temperature Range
• Three-lead version available for indication purposes.
AGENCY APPROVALS:
CSA recognized.
20mm Devices-Recognized under the components program of Underwriters
Laboratories UL1449 and UL1414. Includes selected tests from UL1020,
regarding thermal cutoffs for devices with voltage ratings up to 420VAC.
14mm Devices-Devices are approved as an MOV to UL1449 and UL1414.
Approval to selected UL1020 requirements pending. Devices (14mm and
20mm) with ratings greater than 420VAC are not affected by these abnormal
voltage conditions.
Accelerated Aging Testing-14 and 20mm devices
comply with Acclerated Aging Test requirements per. ANSI/IEEE C62.11 and
may be used in secondary surge arrestors without repeating this test.
Documented in UL file E75961.
AGENCY FILE NUMBERS: ULE56529 (UL1414)
ULE75961 (UL1449)
CSA LR91788
Applications
• TVSS 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 TVSS
• Inverters
• AC/DC Power Supplies
®
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PRODUCTS
Varistor Products
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Thermally Protected
TMOV®and iTMOV®Varistor Series
MAXIMUM RATING (85°C) SPECIFICATIONS (25°C)
CONTINUOUS TRANSIENT
AC
VOLTS
ENERGY
2ms
PEAK SURGE
CURRENT
8/20µs
VARISTOR
VOLTAGE AT 1mA
TEST CURRENT
MAXIMUM
CLAMPING
VOLTAGE
8/20µs
TYPICAL
CAPACI-
TANCE
f = 1MHz
V
M(AC)RMS
W
TM
V
N(DC)
MIN
V
N(DC)
MAX
V
C
I
PK
C
PART
NUMBER (V) (J) (V) (V) (A) (pF)
TMOV14R130E 130 50 184 226 340 50 1000
TMOV20R130E 130 100 184 226 340 100 1900
TMOV14R140E 140 55 200 240 360 50 900
TMOV20R140E 140 110 200 240 360 100 1750
TMOV14R150E 150 60 216 264 395 50 800
TMOV20R150E 150 120 216 264 395 100 1600
TMOV14R175E 175 70 243 297 455 50 700
TMOV20R175E 175 135 243 297 455 100 1400
TMOV14R200E 200 75 281 344 530 50 630
TMOV20R200E 200 154 281 344 530 100 1250
TMOV14R250E 250 100 351 429 650 50 500
TMOV20R250E 250 170 351 429 650 100 1000
TMOV14R275E 275 110 387 473 710 50 450
TMOV20R275E 275 190 387 473 710 100 900
DEVICE
MODEL
NUMBER
BRAND-
ING
4T130E
20T130E
4T140E
20T140E
4T150E
20T150E
4T175E
20T175E
4T200E
20T200E
4T250E
20T250E
4T275E
20T275E
(mm)
DISC
DIA-
METER
14
20
14
20
14
20
14
20
14
20
14
20
14
20
SUPPRESSED
VOLTAGE
RATING
UL 1449
TABLE 60.1
(V)
400
400
500
400
500
400
700
700
700
700
800
700
900
700
I
TM
2 x PULSE
(A)
4500
6500
4500
6500
4500
6500
4500
6500
4500
6500
4500
6500
4500
6500
I
TM
1 x PULSE
(A)
6000
10000
6000
10000
6000
10000
6000
10000
6000
10000
6000
10000
6000
10000
TMOV14R115E
TMOV20R115E
4T115E
20T115E
14
20
115 300
115 300
35
52
6000 4500
10000 6500
162
198
162 198
50
100
300
1100
300 2400
TMOV14R230E 230 80 324 396 595 50 550
TMOV20R230E 230 160 324 396 595 100 1100
4T230E
20T230E
14
20
700
700
4500
6500
6000
10000
TMOV14R300E
300 125 423 517 775 50 400
TMOV20R300E 300 250 423 517 775 100 800
4T300E
20T300E
14
20
900
900
4500
6500
6000
10000
Absolute Maximum Ratings For ratings of individual members of a series, see Device Ratings and Specifications chart
Continuous:
Steady State Applied Voltage:
AC Voltage Range (V
M(AC)RMS
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115 to 750 V
Transient:
Peak Pulse Current (ITM)
For 8x20µs Current Wave, single pulse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6000 to 10,000 A
Single-Pulse Energy Capability
For 2ms Current Wave. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 to 480 J
Operating Ambient Temperature Range (TA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to 85oC
Storage Temperature Range (T
STG
). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 to 125oC
Temperature Coefficient (αV) of Clamping Voltage (VC) at Specified Test Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <0.01 %/oC
Hi-Pot Encapsulation (Isolation Voltage Capability) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2500 V
Thermal Protection Isolation Voltage Capability (when operated) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600 V
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.
Device Ratings and Specifications - TMOV Varistor Series
™
TMOV and iTMOV Varistor Series - Absolute Maximum Ratings
TMOV / iTMOV Varistor UNITS
NOTE: For 14mm devices with a voltage rating greater than 420V, please contact factory regarding availability.
Thermally Protected
Varistor Products
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TMOV®and iTMOV®Varistor Series
Device Ratings and Specifications - TMOV Varistor Series continued...
MAXIMUM RATING (85°C) SPECIFICATIONS (25°C)
CONTINUOUS
TRANSIENT
AC
VOLTS
ENERGY
2ms
PEAK SURGE
CURRENT
8/20µs
VARISTOR
VOLTAGE AT 1mA
TEST CURRENT
MAXIMUM
CLAMPING
VOLTAGE
8/20µs
TYPICAL
CAPACI-
TANCE
f = 1MHz
V
M(AC)RMS
W
TM
V
N(DC)
MIN
V
N(DC)
MAX
V
C
I
PK
C
PART
NUMBER (V) (J) (V) (V) (A) (pF)
TMOV14R130M 130 50 184 226 340 50 1000
TMOV20R130M 130 100 184 226 340 100 1900
TMOV14R140M 140 55 200 240 360 50 900
TMOV20R140M 140 110 200 240 360 100 1750
TMOV14R150M 150 60 216 264 395 50 800
TMOV20R150M 150 120 216 264 395 100 1600
TMOV14R175M 175 70 243 297 455 50 700
TMOV20R175M 175 135 243 297 455 100 1400
TMOV14R200M 200 75 281 344 530 50 630
TMOV20R200M 200 154 281 344 530 100 1250
TMOV14R250M 250 100 351 429 650 50 500
TMOV20R250M 250 170 351 429 650 100 1000
TMOV14R275M 275 110 387 473 710 50 450
TMOV20R275M 275 190 387 473 710 100 900
DEVICE
MODEL
NUMBER
BRAND-
ING
4T130M
20T130M
4T140M
20T140M
4T150M
20T150M
4T175M
20T175M
4T200M
20T200M
4T250M
20T250M
4T275M
20T275M
(mm)
DISC
DIA-
METER
14
20
14
20
14
20
14
20
14
20
14
20
14
20
SUPPRESSED
VOLTAGE
RATING
UL 1449
TABLE 60.1
(V)
400
400
500
400
500
400
700
700
700
700
800
700
900
700
I
TM
2 x PULSE
(A)
4500
6500
4500
6500
4500
6500
4500
6500
4500
6500
4500
6500
4500
6500
I
TM
1 x PULSE
(A)
6000
10000
6000
10000
6000
10000
6000
10000
6000
10000
6000
10000
6000
10000
TMOV14R115M
TMOV20R115M
4T115M
20T115M
14
20
115 300
115 300
35
52
6000 4500
10000 6500
162
198
162 198
50
100
300
1100
300 2400
TMOV14R230M 230 80 324 396 595 50 550
TMOV20R230M 230 160 324 396 595 100 1100
4T230M
20T230M
14
20
700
700
4500
6500
6000
10000
TMOV14R300M 300 125 423 517 775 50 400
TMOV20R300M 300 250 423 517 775 100 800
4T300M
20T300M
14
20
900
900
4500
6500
6000
10000
TMOV14R320E 320 136 459 561 840 50 380
TMOV20R320E 320 273 459 561 840 100 750
TMOV14R385E
TMOV20R385E
TMOV14R420E
TMOV20R420E
4T320E
20T320E
4T385E
20T385E
4T420E
20T420E
14
20
14
20
14
20
420
420
385
385
900
900
1200
1200
1200
1200
160
320
150
300
4500
6500
4500
6500
4500
6500
6000
10000
6000
10000
6000
10000
612
612
558
558
748
748
682
682
1120
1120
1025
1025
50
100
50
100
300
600
360
700
TMOV20R460E
20T460E
20
460
n/a
360
6500
10000
675
825
1240 100
200
TMOV20R510E
20T510E
20
510
n/a
325
6500
10000
738
902
1355
100
350
TMOV20R550E
TMOV20R575E
20T550E
20T575E
20
20
575
550
n/a
n/a
375
360
6500
6500
10000
10000
856
819
1047
1001
1568
1500
100
100
275
300
MAXIMUM RATING (85¡C) SPECIFICATIONS (25¡C)
CONTINUOUS TRANSIENT
AC
VOLTS
ENERGY
2ms
PEAK SURGE
CURRENT
8/20 s
VARISTOR
VOLTAGE AT 1mA
TEST CURRENT
MAXIMUM
CLAMPING
VOLTAGE
8/20 s
TYPICAL
CAPACI-
TANCE
f = 1MHz
V
M(AC)RMS
W
TM
V
N(DC)
MIN
V
N(DC)
MAX
V
C
I
PK
C
PART
NUMBER (V) (J) (V) (V) (A) (pF)
TMOV20R750E
750 100 1080 1320 1980 100 175
DEVICE
MODEL
NUMBER
BRAND-
ING
20T750E
(mm)
DISC
DIA-
METER
20
SUPPRESSED
VOLTAGE
RATING
UL 1449
TABLE 60.1
(V)
n/a
I
TM
2 x PULSE
(A)
6500
I
TM
1 x PULSE
(A)
10000
TMOV20R625E
20T625E
20
625
n/a
52
10000
6500
900 1100
1001650 250
Device Ratings and Specifications - iTMOV Varistor Series
NOTE: For 14mm devices with a voltage rating greater than 420V, please contact factory regarding availability.
NOTE: For 14mm devices with a voltage rating greater than 420V, please contact factory regarding availability.
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