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
TS120A-3851

TS120A-3851

DUAL SINGLE SHOT TIMER

Littelfuse Inc.

2,769 -
RFQ
TS120A-3851

Datasheet

- - Box Active - - - - - - - - - - - - - - - - - -
RXE300

RXE300

PTC RESET FUSE 72V 3A RADIAL

Littelfuse Inc.

9,500 -
RFQ
RXE300

Datasheet

Radial, Disc PolySwitch®, RXE Bulk Obsolete Polymeric 72V 3 A 6 A 40 A 19.8 s 40 mOhms 100 mOhms - - - - - Through Hole 0.941" Dia x 0.118" T (23.90mm x 3.00mm) 1.126" (28.60mm) - 0.400" (10.15mm)
RXE050

RXE050

PTC RESET FUSE 72V 500MA RADIAL

Littelfuse Inc.

5,195 -
RFQ
RXE050

Datasheet

Radial, Disc PolySwitch®, RXE Bulk Obsolete Polymeric 72V 500 mA 1 A 40 A 4 s 500 mOhms 1.17 Ohms - - - - - Through Hole 0.311" Dia x 0.118" T (7.90mm x 3.00mm) 0.539" (13.70mm) - 0.199" (5.05mm)
RXE090

RXE090

PTC RESET FUSE 72V 900MA RADIAL

Littelfuse Inc.

3,475 -
RFQ

-

Radial, Disc PolySwitch®, RXE Bulk Obsolete Polymeric 72V 900 mA 1.8 A 40 A 7.2 s 200 mOhms 470 mOhms - - - - - Through Hole 0.441" Dia x 0.118" T (11.20mm x 3.00mm) 0.622" (15.80mm) - 0.199" (5.05mm)
RXE065

RXE065

PTC RESET FUSE 60V 650MA RADIAL

Littelfuse Inc.

7,790 -
RFQ

-

Radial, Disc PolySwitch®, RXE Bulk Obsolete Polymeric 60V 650 mA 1.3 A 40 A 5.3 s 310 mOhms 720 mOhms - -40°C ~ 85°C - - - Through Hole 0.370" Dia x 0.118" T (9.40mm x 3.00mm) 0.571" (14.50mm) - 0.199" (5.05mm)
TR250-120

TR250-120

PTC RESET FUSE 250V 120MA RADIAL

Littelfuse Inc.

2,527 -
RFQ
TR250-120

Datasheet

Radial, Disc PolySwitch® Bulk Obsolete Polymeric 250V (60V Int) 120 mA - 3 A 1.5 s 4 Ohms 16 Ohms - -40°C ~ 85°C - - - Through Hole 0.256" L x 0.181" W (6.50mm x 4.60mm) 0.433" (11.00mm) - 0.197" (5.00mm)
TR250-180U

TR250-180U

PTC RESET FUSE 180MA RADIAL

Littelfuse Inc.

3,265 -
RFQ

-

Radial, Disc PolySwitch® Bulk Obsolete - - 180 mA - - - - - - - - - - Through Hole 0.409" L x 0.142" W (10.40mm x 3.60mm) 0.496" (12.60mm) - 0.197" (5.00mm)
RUE800

RUE800

PTC RESET FUSE 30V 8A RADIAL

Littelfuse Inc.

6,742 -
RFQ
RUE800

Datasheet

Radial, Disc PolySwitch® Bulk Obsolete Polymeric 30V 8 A 16 A 40 A 18.8 s 5 mOhms 20 mOhms - -40°C ~ 85°C - - - Through Hole 0.850" L x 0.118" W (21.60mm x 3.00mm) 1.150" (29.20mm) - 0.402" (10.20mm)
RXE135

RXE135

PTC RESET FUSE 60V 1.35A RADIAL

Littelfuse Inc.

5,919 -
RFQ

-

Radial, Disc PolySwitch®, RXE Bulk Obsolete Polymeric 60V 1.35 A 2.7 A 40 A 9.6 s 120 mOhms 300 mOhms - -40°C ~ 85°C - - - Through Hole 0.571" Dia x 0.118" T (14.50mm x 3.00mm) 0.752" (19.10mm) - 0.199" (5.05mm)
TR250-145U

TR250-145U

PTC RESET FUSE 250V 145MA RADIAL

Littelfuse Inc.

7,367 -
RFQ

-

Radial, Disc PolySwitch® Bulk Obsolete Polymeric 250V (60V Int) 145 mA - 3 A 2 s 3.5 Ohms 12 Ohms - -40°C ~ 85°C - - - Through Hole 0.236" L x 0.150" W (6.00mm x 3.80mm) 0.394" (10.00mm) - 0.197" (5.00mm)
TR250-120U

TR250-120U

PTC RESET FUSE 250V 120MA RADIAL

Littelfuse Inc.

9,079 -
RFQ
TR250-120U

Datasheet

Radial, Disc PolySwitch® Bulk Obsolete Polymeric 250V (60V Int) 120 mA - 3 A 1 s 6 Ohms 16 Ohms - -40°C ~ 85°C - - - Through Hole 0.256" L x 0.181" W (6.50mm x 4.60mm) 0.433" (11.00mm) - 0.197" (5.00mm)
TR250-145

TR250-145

PTC RESET FUSE 250V 145MA RADIAL

Littelfuse Inc.

5,297 -
RFQ

-

Radial, Disc PolySwitch® Bulk Obsolete Polymeric 250V (60V Int) 145 mA - 3 A 2.5 s 3 Ohms 14 Ohms - -40°C ~ 85°C - - - Through Hole 0.256" L x 0.181" W (6.50mm x 4.60mm) 0.433" (11.00mm) - 0.197" (5.00mm)
RXE075

RXE075

PTC RESET FUSE 60V 750MA RADIAL

Littelfuse Inc.

5,246 -
RFQ

-

Radial, Disc PolySwitch®, RXE Bulk Obsolete Polymeric 60V 750 mA 1.5 A 40 A 6.3 s 250 mOhms 600 mOhms - -40°C ~ 85°C - - - Through Hole 0.402" Dia x 0.118" T (10.20mm x 3.00mm) 0.598" (15.20mm) - 0.199" (5.05mm)
RUE185

RUE185

PTC RESET FUSE 30V 1.85A RADIAL

Littelfuse Inc.

8,338 -
RFQ
RUE185

Datasheet

Radial, Disc PolySwitch® Bulk Obsolete Polymeric 30V 1.85 A 3.7 A 40 A 8.7 s 30 mOhms 90 mOhms - -40°C ~ 85°C - - - Through Hole 0.402" L x 0.118" W (10.20mm x 3.00mm) 0.618" (15.70mm) - 0.201" (5.10mm)
RUE160

RUE160

PTC RESET FUSE 30V 1.6A RADIAL

Littelfuse Inc.

7,956 -
RFQ
RUE160

Datasheet

Radial, Disc PolySwitch® Bulk Obsolete Polymeric 30V 1.6 A 3.2 A 40 A 8 s 30 mOhms 110 mOhms - -40°C ~ 85°C - - - Through Hole 0.350" L x 0.118" W (8.90mm x 3.00mm) 0.598" (15.20mm) - 0.201" (5.10mm)
RUE400

RUE400

PTC RESET FUSE 30V 4A RADIAL

Littelfuse Inc.

4,765 -
RFQ
RUE400

Datasheet

Radial, Disc PolySwitch® Bulk Obsolete Polymeric 30V 4 A 8 A 40 A 12.7 s 10 mOhms 50 mOhms - -40°C ~ 85°C - - - Through Hole 0.551" L x 0.120" W (14.00mm x 3.00mm) 0.831" (21.10mm) - 0.201" (5.10mm)
RXE030

RXE030

PTC RESET FUSE 72V 300MA RADIAL

Littelfuse Inc.

5,958 -
RFQ

-

Radial, Disc PolySwitch®, RXE Bulk Obsolete Polymeric 72V 300 mA 600 mA 40 A 3 s 880 mOhms 2.1 Ohms - - - - - Through Hole 0.291" Dia x 0.118" T (7.40mm x 3.00mm) 0.500" (12.70mm) - 0.199" (5.05mm)
RXE020

RXE020

PTC RESET FUSE 72V 200MA RADIAL

Littelfuse Inc.

5,494 -
RFQ
RXE020

Datasheet

Radial, Disc PolySwitch®, RXE Bulk Obsolete Polymeric 72V 200 mA 400 mA 40 A 2.2 s 1.83 Ohms 4.4 Ohms - - - - - Through Hole 0.291" Dia x 0.118" T (7.40mm x 3.00mm) 0.461" (11.70mm) - 0.199" (5.05mm)
RXE025

RXE025

PTC RESET FUSE 72V 250MA RADIAL

Littelfuse Inc.

7,598 -
RFQ

-

Radial, Disc PolySwitch®, RXE Bulk Obsolete Polymeric 72V 250 mA 500 mA 40 A 2.5 s 1.25 Ohms 3 Ohms - - - - - Through Hole 0.291" Dia x 0.118" T (7.40mm x 3.00mm) 0.500" (12.70mm) - 0.199" (5.05mm)
RXE040

RXE040

PTC RESET FUSE 72V 400MA RADIAL

Littelfuse Inc.

3,509 -
RFQ

-

Radial, Disc PolySwitch®, RXE Bulk Obsolete Polymeric 72V 400 mA 800 mA 40 A 3.8 s 550 mOhms 1.29 Ohms - - - - - Through Hole 0.299" Dia x 0.118" T (7.60mm x 3.00mm) 0.532" (13.50mm) - 0.199" (5.05mm)
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