Metal-Oxide Varistors Datasheet
© 2022 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 04/27/22
1
TMOV
®
25S Varistor Series
Radial Lead Varistors
■ RoHS Compliant
and Lead-free
■ Wave solderable
■ Standard Operating Voltage
Range Compatible with
Common AC Line Voltages
(115VAC to 750VAC)
■ High peak surge current
rating up to 20kA at
single 8/20µs impulse
■ Standard lead form
and spacing option
■ -55°C to +85°C operating
temperature range
■ SPD Products
■ AC Panel Protection Modules
■ AC/DC power supplies
■ UPS (Uninterruptible
Power Supply)
Agency Agency Approval Agency File Number
UL1449 E320116
IEC 61051-1,
IEC 61051-2,
IEC 60950-1 (Annex Q)
J 50472797
Metal Oxide Varistors (MOVs) are rated for specific AC line
operating voltages, and exceeding these limits through the
application of a sustained abnormal over-voltage condition could
result in overheating and damage to the MOV.
The Littelfuse TMOV®25S Varistor Series was designed to
address this condition in a single integrated package.
The TMOV®25S Varistor Series incorporates a patented integrated
thermally responsive element within the body of the device which
will open-circuit the varistor in case of overheating due to the
abnormal over-voltage events.
The TMOV®25S Varistor Series meets the surge suppressor
component recognition requirements of UL1449 4th edition for
both cord connected and permanently connected SPD
end products.
RoHS
Description
Applications
Features & Benefits
Agency Approvals
Resources Accessories Samples
Additional Information
Metal-Oxide Varistors Datasheet
© 2022 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 04/27/22
2
TMOV
®
25S Varistor Series
Radial Lead Varistors
■ For ratings of individual members of a series, see Device Ratings and Specifications chart.
Reading TMOV
®
25S
Varistor Series Units
Continous
AC Voltage Range (V
M(AC)RMS
) 115 to 750 V
Transient
Peak Pulse Current (I
TM
) - -
For 8x20μs Current Wave, single pulse 20,000 A
Single-Pulse Energy Capability - -
For 2ms Current Wave 170 to 670 J
Operating Ambient Temperature Range (T
A
) -55 to +85 °C
Storage Temperature Range (T
STG
) -55 to +125 °C
Temperature Coefficient (αV) of Clamping Voltage (V
C
) 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
2 Leaded Device -
Without Indicator Lead
3 Leaded Device -
With Indicator Lead Option
Model
Size
Disc
Diameter
(mm)
Maximum Rating (85°C) Specifications (25 °C)
Continuous Transient
Varistor Voltage
@1mA
Test Current
Clamping
Voltage
@100A
Current
8/20μs
Typical
Capacitance
(f=1MHz)
AC
Volts
DC
Volts
Energy
2ms
Peak
Current
8/20μs
Part Number Branding Part Number Branding
V
M(AC)RMS
V
M(DC)
W
TM
I
TM
1×Pulse V
N(DC)
Min V
N(DC)
Max V
C
C
(V) (V) (J) (A) (V) (V) (pF)
TMOV25SP115E P25T115E TMOV25SP115M P25T115M
25
115 150 170
20000
162 198 295 3200
TMOV25SP130E P25T130E TMOV25SP130M P25T130M 130 170 190 184.5 225.5 335 2800
TMOV25SP140E P25T140E TMOV25SP140M P25T140M 140 180 210 198 242 355 2500
TMOV25SP150E P25T150E TMOV25SP150M P25T150M 150 200 220 216 264 390 2300
TMOV25SP175E P25T175E TMOV25SP175M P25T175M 175 225 250 243 297 450 1900
TMOV25SP200E P25T200E TMOV25SP200M P25T200M 200 265 270 283 345 530 1700
TMOV25SP230E P25T230E TMOV25SP230M P25T230M 230 300 300 324 396 585 1500
TMOV25SP250E P25T250E TMOV25SP250M P25T250M 250 320 330 351 429 640 1400
TMOV25SP275E P25T275E TMOV25SP275M P25T275M 275 350 350 387 473 700 1250
TMOV25SP300E P25T300E TMOV25SP300M P25T300M 300 385 370 423 517 765 115 0
TMOV25SP320E P25T320E TMOV25SP320M P25T320M 320 420 390 459 561 825 1080
TMOV25SP385E P25T385E TMOV25SP385M P25T385M 385 505 430 558 682 1010 900
TMOV25SP420E P25T420E TMOV25SP420M P25T420M 420 560 460 612 748 110 0 820
TMOV25SP440E P25T440E TMOV25SP440M P25T440M 440 585 470 643.5 786.5 116 0 790
TMOV25SP460E P25T460E TMOV25SP460M P25T460M 460 615 490 675 825 1220 750
TMOV25SP510E P25T510E TMOV25SP510M P25T510M 510 670 520 738 902 1335 680
TMOV25SP550E P25T550E TMOV25SP550M P25T550M 550 74 5 550 819 1001 1475 630
TMOV25SP625E P25T625E TMOV25SP625M P25T625M 625 825 600 900 110 0 1625 550
TMOV25SP750E P25T750E TMOV25SP750M P25T750M 750 970 670 1080 1320 1950 460
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.
Notes: Average power dissipation of transients should not exceed 1.5 watts.
Absolute Maximum Ratings
Note: * - See notes under Device Ratings & Specifications section for more information
Device Ratings & Specifications