PTC Resettable Fuses

Manufacturer Package/Case Series Packaging Product Status Type Voltage - Max Current - Hold (Ih) (Max) Current - Trip (It) Current - Max Time to Trip Resistance - Initial (Ri) (Min) Resistance - Post Trip (R1) (Max) Resistance - 25°C (Typ) Operating Temperature Grade Qualification Ratings Mounting Type Size / Dimension Height - Seated (Max) Thickness (Max) Lead Spacing

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PTC Resettable Fuses

PTC Resettable Fuses are circuit protection components used to protect electronic systems from overcurrent, short-circuit and fault conditions. Unlike one-time fuses, PTC resettable fuses increase resistance during a fault and can return to a low-resistance state after the fault is removed and the device cools down.

This category includes polymer PTC resettable fuses, PPTC fuses, radial leaded PTC fuses, surface-mount PTC fuses and related overcurrent protection components. These devices are commonly selected based on hold current, trip current, rated voltage, resistance, response time, package type, operating temperature and application requirements.

TomatoElec supplies original PTC Resettable Fuses from recognized manufacturers such as Littelfuse, Bourns, Eaton, Bel Fuse, TE Connectivity, Murata, TDK, Panasonic and other major brands. As an in-stock electronic components supplier and independent distributor, TomatoElec provides inventory support, original component sourcing and BOM sourcing services for global customers.

Photo Mfr. Part # Availability Price Quantity Datasheet Package/Case Series Packaging Product Status Type Voltage - Max Current - Hold (Ih) (Max) Current - Trip (It) Current - Max Time to Trip Resistance - Initial (Ri) (Min) Resistance - Post Trip (R1) (Max) Resistance - 25°C (Typ) Operating Temperature Grade Qualification Ratings Mounting Type Size / Dimension Height - Seated (Max) Thickness (Max) Lead Spacing
PTGL07AS2R7K2B51A0

PTGL07AS2R7K2B51A0

PTC RESET FUSE 30V 425MA RADIAL

Murata Electronics

8,282 -
RFQ
PTGL07AS2R7K2B51A0

Datasheet

Radial, Disc POSISTOR®, PTGL Bulk Obsolete Ceramic 30V 425 mA 565 mA 4.5 A - - - 2.7 Ohms -10°C ~ 60°C - - - Through Hole 0.287" Dia x 0.138" T (7.30mm x 3.50mm) 0.484" (12.30mm) - 0.197" (5.00mm)
PTGL09BD2R2N2B51A0

PTGL09BD2R2N2B51A0

PTC RESET FUSE 24V 326MA RADIAL

Murata Electronics

8,558 -
RFQ
PTGL09BD2R2N2B51A0

Datasheet

Radial, Disc POSISTOR®, PTGL Bulk Obsolete Ceramic 24V 326 mA 431 mA 2 A - - - 2.2 Ohms -10°C ~ 60°C - - - Through Hole 0.374" Dia x 0.157" T (9.50mm x 4.00mm) 0.610" (15.50mm) - 0.197" (5.00mm)
PTGLESARR15M1B51B0

PTGLESARR15M1B51B0

PTC RESET FUSE 16V 1.545A RADIAL

Murata Electronics

7,945 -
RFQ
PTGLESARR15M1B51B0

Datasheet

Radial, Disc POSISTOR®, PTGL Bulk Obsolete Ceramic 16V 1.545 A 2.855 A 10 A - - - 150 mOhms -30°C ~ 85°C - - - Through Hole 0.531" Dia x 0.138" T (13.50mm x 3.50mm) 0.728" (18.50mm) - 0.197" (5.00mm)
YS5940PTH

YS5940PTH

PTC RESET FUSE HEATERS 40%

Amphenol Advanced Sensors (Thermometrics)

4,051 -
RFQ
YS5940PTH

Datasheet

- PTH Bulk Active - - - - - - - - - - - - - - - - - -
MF-RX375-AP

MF-RX375-AP

PTC RESET FUSE 60V 3.75A RADIAL

Bourns Inc.

2,421 -
RFQ
MF-RX375-AP

Datasheet

Radial, Disc Multifuse®, MF-RX Tape & Box (TB) Obsolete Polymeric 60V 3.75 A 7.5 A 40 A 24 s 30 mOhms 80 mOhms - -40°C ~ 85°C - - - Through Hole 1.118" Dia x 0.122" T (28.40mm x 3.10mm) 1.319" (33.50mm) - 0.402" (10.20mm)
MF-R025-AP-99

MF-R025-AP-99

PTC RESET FUSE 60V 250MA RADIAL

Bourns Inc.

5,954 -
RFQ
MF-R025-AP-99

Datasheet

Radial, Disc Multifuse®, MF-R Tape & Box (TB) Obsolete Polymeric 60V 250 mA 500 mA 40 A 2.5 s 1 Ohms 3 Ohms - -40°C ~ 85°C - - - Through Hole 0.291" Dia x 0.122" T (7.40mm x 3.10mm) 0.500" (12.70mm) - 0.201" (5.10mm)
MF-R110-AP-99

MF-R110-AP-99

PTC RESET FUSE 30V 1.1A RADIAL

Bourns Inc.

4,505 -
RFQ
MF-R110-AP-99

Datasheet

Radial, Disc Multifuse®, MF-R Tape & Box (TB) Obsolete Polymeric 30V 1.1 A 2.2 A 40 A 6.6 s 100 mOhms 270 mOhms - -40°C ~ 85°C - - - Through Hole 0.350" Dia x 0.118" T (8.90mm x 3.00mm) 0.551" (14.00mm) - 0.201" (5.10mm)
MF-R300-AP-99

MF-R300-AP-99

PTC RESET FUSE 30V 3A RADIAL

Bourns Inc.

2,664 -
RFQ
MF-R300-AP-99

Datasheet

Radial, Disc Multifuse®, MF-R Tape & Box (TB) Obsolete Polymeric 30V 3 A 6 A 40 A 10.8 s 20 mOhms 80 mOhms - -40°C ~ 85°C - - - Through Hole 0.472" L x 0.118" W (12.00mm x 3.00mm) 0.720" (18.30mm) - 0.201" (5.10mm)
MF-RX375-AP-99

MF-RX375-AP-99

PTC RESET FUSE 60V 3.75A RADIAL

Bourns Inc.

5,804 -
RFQ
MF-RX375-AP-99

Datasheet

Radial, Disc Multifuse®, MF-RX Tape & Box (TB) Obsolete Polymeric 60V 3.75 A 7.5 A 40 A 24 s 30 mOhms 80 mOhms - -40°C ~ 85°C - - - Through Hole 1.118" Dia x 0.122" T (28.40mm x 3.10mm) 1.319" (33.50mm) - 0.402" (10.20mm)
MF-R1100-2-99

MF-R1100-2-99

PTC RESET FUSE 16V 11A RADIAL

Bourns Inc.

3,028 -
RFQ
MF-R1100-2-99

Datasheet

Radial, Disc Multifuse®, MF-R Tape & Reel (TR) Obsolete Polymeric 16V 11 A 22 A 100 A 20 s 3 mOhms 14 mOhms - -40°C ~ 85°C - - - Through Hole 0.953" L x 0.118" W (24.20mm x 3.00mm) 1.295" (32.90mm) - 0.402" (10.20mm)
MF-R500-2-99

MF-R500-2-99

PTC RESET FUSE 30V 5A RADIAL

Bourns Inc.

3,730 -
RFQ
MF-R500-2-99

Datasheet

Radial, Disc Multifuse®, MF-R Tape & Reel (TR) Obsolete Polymeric 30V 5 A 10 A 40 A 14.5 s 10 mOhms 50 mOhms - -40°C ~ 85°C - - - Through Hole 0.685" L x 0.118" W (17.40mm x 3.00mm) 0.980" (24.90mm) - 0.402" (10.20mm)
MF-R800-2-99

MF-R800-2-99

PTC RESET FUSE 30V 8A RADIAL

Bourns Inc.

7,567 -
RFQ
MF-R800-2-99

Datasheet

Radial, Disc Multifuse®, MF-R Tape & Reel (TR) Obsolete Polymeric 30V 8 A 16 A 40 A 18.8 s 5 mOhms 30 mOhms - -40°C ~ 85°C - - - Through Hole 0.953" L x 0.118" W (24.20mm x 3.00mm) 1.295" (32.90mm) - 0.402" (10.20mm)
RUEF600K-0.144

RUEF600K-0.144

PTC RESET FUSE 30V 6A RADIAL

Littelfuse Inc.

8,645 -
RFQ
RUEF600K-0.144

Datasheet

Radial, Disc PolySwitch®, RUEF Bulk Active Polymeric 30V 6 A 12 A 100 A 16 s 5 mOhms 40 mOhms - -40°C ~ 85°C - - - Through Hole 0.650" L x 0.118" W (16.50mm x 3.00mm) 1.032" (26.20mm) - 0.400" (10.15mm)
RUEF900K-0.144

RUEF900K-0.144

PTC RESET FUSE 30V 9A RADIAL

Littelfuse Inc.

2,525 -
RFQ
RUEF900K-0.144

Datasheet

Radial, Disc PolySwitch®, RUEF Bulk Active Polymeric 30V 9 A 18 A 100 A 20 s 5 mOhms 20 mOhms - -40°C ~ 85°C - - - Through Hole 0.949" L x 0.118" W (24.10mm x 3.00mm) 1.220" (31.00mm) - 0.400" (10.15mm)
RXEF017-0.142

RXEF017-0.142

PTC RESET FUSE 60V 170MA RADIAL

Littelfuse Inc.

8,689 -
RFQ
RXEF017-0.142

Datasheet

Radial, Disc PolySwitch®, RXEF Bulk Active Polymeric 60V 170 mA 340 mA 40 A 3 s 3.3 Ohms 8 Ohms - -40°C ~ 85°C - - - Through Hole 0.291" Dia x 0.118" T (7.40mm x 3.00mm) 0.500" (12.70mm) - 0.199" (5.05mm)
RXEF185K-0.167

RXEF185K-0.167

PTC RESET FUSE 72V 1.85A RADIAL

Littelfuse Inc.

9,872 -
RFQ
RXEF185K-0.167

Datasheet

Radial, Disc PolySwitch®, RXEF Bulk Active Polymeric 72V 1.85 A 3.7 A 40 A 12.6 s 80 mOhms 190 mOhms - -40°C ~ 85°C - - - Through Hole 0.660" Dia x 0.118" T (16.76mm x 3.00mm) 0.906" (23.00mm) - 0.199" (5.05mm)
PSR-24883F

PSR-24883F

PTC RESET FUSE 60V 160MA

Littelfuse Inc.

5,292 -
RFQ
PSR-24883F

Datasheet

- PSR Bulk Active Polymeric 60V 160 mA 640 mA 3 A 7 s 6.5 Ohms 8 Ohms - 125°C - - - - - - - -
MICROSMD010F-02

MICROSMD010F-02

PTC RESET FUSE 30V 100MA 1210

Littelfuse Inc.

2,845 -
RFQ
MICROSMD010F-02

Datasheet

1210 (3225 Metric), Concave PolySwitch®, miniSMD Tape & Reel (TR) Active Polymeric 30V 100 mA 250 mA 10 A 1 s 2.1 Ohms 15 Ohms - -40°C ~ 85°C - - - Surface Mount 0.127" L x 0.102" W (3.22mm x 2.58mm) - 0.033" (0.85mm) -
MINISMDC050F-02

MINISMDC050F-02

PTC RESET FUSE 24V 500MA 1812

Littelfuse Inc.

4,350 -
RFQ

-

1812 (4532 Metric), Concave PolySwitch®, miniSMD Tape & Reel (TR) Active Polymeric 24V 500 mA 1 A 100 A 150 ms 150 mOhms 1 Ohms - -40°C ~ 85°C - - - Surface Mount 0.179" L x 0.128" W (4.55mm x 3.24mm) - 0.024" (0.62mm) -
TRF250-080TA

TRF250-080TA

PTC RESET FUSE 60V 80MA RADIAL

Littelfuse Inc.

3,217 -
RFQ
TRF250-080TA

Datasheet

Radial, Disc PolySwitch®, TRF250 Bulk Active Polymeric 60V (250V Int) 80 mA 160 mA 3 A 4 s 15 Ohms 33 Ohms - 0°C ~ 85°C - - - Through Hole 0.228" Dia x 0.181" T (5.80mm x 4.60mm) 0.390" (9.90mm) - 0.197" (5.00mm)
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