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
PTGL12AS4R7K6B51B0

PTGL12AS4R7K6B51B0

PTC RESET FUSE 140V 393MA RADIAL

Murata Electronics

6,879 -
RFQ
PTGL12AS4R7K6B51B0 Datasheet Radial, Disc POSISTOR®, PTGL Bulk Obsolete Ceramic 140V 393 mA 523 mA 3.5 A - - - 4.7 Ohms -30°C ~ 85°C - - - Through Hole 0.453" Dia x 0.138" T (11.50mm x 3.50mm) 0.650" (16.50mm) - 0.197" (5.00mm)
AHRF250

AHRF250

PTC RESET FUSE 16V 2.5A RADIAL

Littelfuse Inc.

9,282 -
RFQ
AHRF250 Datasheet Radial, Disc PolySwitch®, AHRF Bulk Active Polymeric 16V 2.5 A - 100 A - - - - -40°C ~ 125°C Automotive AEC-Q200 - Through Hole - - - -
LR4-73XF

LR4-73XF

PTC RESET FUSE 730MA STRAP

Littelfuse Inc.

7,773 -
RFQ
LR4-73XF Datasheet Strap PolySwitch®, LR4 Bulk Active Polymeric - 730 mA - 100 A - - - - -40°C ~ 85°C - - - User Defined 1.831" L x 0.323" W (46.50mm x 8.20mm) - 0.039" (1.00mm) -
LVR040K-1

LVR040K-1

PTC RESET FUSE 240V 400MA RADIAL

Littelfuse Inc.

9,021 -
RFQ
LVR040K-1 Datasheet Radial, Disc PolySwitch®, LVR Bulk Active Polymeric 240V (265V Int) 400 mA 900 mA 5.5 A 24 s 600 mOhms 1.9 Ohms - -20°C ~ 85°C - - - Through Hole 0.453" L x 0.150" W (11.50mm x 3.80mm) 0.823" (20.90mm) - 0.200" (5.08mm)
TS250-130F-RC-2

TS250-130F-RC-2

PTC RESET FUSE 60V 130MA 2SMD

Littelfuse Inc.

3,787 -
RFQ
TS250-130F-RC-2 Datasheet 2-SMD PolySwitch®, TS250 Tape & Reel (TR) Active Polymeric 60V (600V Int) 130 mA 260 mA 1 A 2 s 7 Ohms 17 Ohms - -40°C ~ 85°C - - - Surface Mount 0.352" L x 0.291" W (8.95mm x 7.40mm) - 0.134" (3.40mm) -
VTP170SSF

VTP170SSF

PTC RESET FUSE 16V 1.7A STRAP

Littelfuse Inc.

5,871 -
RFQ
VTP170SSF Datasheet Strap PolySwitch®, VTP Bulk Active Polymeric 16V 1.7 A 3.4 A 100 A 5 s 30 mOhms 105 mOhms - -40°C ~ 85°C - - - User Defined 0.648" L x 0.283" W (16.45mm x 7.20mm) - 0.032" (0.80mm) -
VTP/200GF

VTP/200GF

PTC RESET FUSE 16V 2A STRAP

Littelfuse Inc.

7,994 -
RFQ
VTP/200GF Datasheet Strap PolySwitch®, VTP Bulk Active Polymeric 16V 2 A 4.7 A 100 A 5 s 22 mOhms 78 mOhms - - - - - User Defined 0.909" L x 0.177" W (23.10mm x 4.50mm) - 0.032" (0.80mm) -
06R155BU

06R155BU

PTC RESET FUSE 6V 1.55A RADIAL

Littelfuse Inc.

4,359 -
RFQ
06R155BU Datasheet Radial, Disc POLY-FUSE®, USBR Bulk Obsolete Polymeric 6V 1.55 A 2.7 A 40 A 2.2 s 40 mOhms 100 mOhms - -40°C ~ 85°C - - - Through Hole 0.272" Dia x 0.118" T (6.90mm x 3.00mm) 0.449" (11.40mm) - 0.201" (5.10mm)
06R120BU

06R120BU

PTC RESET FUSE 6V 1.2A RADIAL

Littelfuse Inc.

3,815 -
RFQ
06R120BU Datasheet Radial, Disc POLY-FUSE®, USBR Bulk Obsolete Polymeric 6V 1.2 A 2 A 40 A 500 ms 65 mOhms 140 mOhms - -40°C ~ 85°C - - - Through Hole 0.272" Dia x 0.118" T (6.90mm x 3.00mm) 0.449" (11.40mm) - 0.201" (5.10mm)
06R075BU

06R075BU

PTC RESET FUSE 6V 750MA RADIAL

Littelfuse Inc.

3,997 -
RFQ
06R075BU Datasheet Radial, Disc POLY-FUSE®, USBR Bulk Obsolete Polymeric 6V 750 mA 1.3 A 40 A 400 ms 100 mOhms 230 mOhms - -40°C ~ 85°C - - - Through Hole 0.272" Dia x 0.118" T (6.90mm x 3.00mm) 0.449" (11.40mm) - 0.201" (5.10mm)
250R120-R1ZR

250R120-R1ZR

PTC RESET FUSE 60V 120MA RADIAL

Littelfuse Inc.

6,541 -
RFQ
250R120-R1ZR Datasheet Radial, Disc POLY-FUSE®, 250R Tape & Box (TB) Obsolete Polymeric 60V (250V Int) 120 mA 240 mA 3 A 2.5 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) - 0.201" (5.10mm)
250R120-R3U

250R120-R3U

PTC RESET FUSE 60V 120MA RADIAL

Littelfuse Inc.

2,714 -
RFQ
250R120-R3U Datasheet Radial, Disc POLY-FUSE®, 250R Bulk Obsolete Polymeric 60V (250V Int) 120 mA 240 mA 3 A 2.5 s 8 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) - 0.201" (5.10mm)
250R120-R2U

250R120-R2U

PTC RESET FUSE 60V 120MA RADIAL

Littelfuse Inc.

7,946 -
RFQ
250R120-R2U Datasheet Radial, Disc POLY-FUSE®, 250R Bulk Obsolete Polymeric 60V (250V Int) 120 mA 240 mA 3 A 2.5 s 8 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) - 0.201" (5.10mm)
250R120-RAU

250R120-RAU

PTC RESET FUSE 60V 120MA RADIAL

Littelfuse Inc.

5,591 -
RFQ
250R120-RAU Datasheet Radial, Disc POLY-FUSE®, 250R Bulk Obsolete Polymeric 60V (250V Int) 120 mA 240 mA 3 A 2.5 s 7 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) - 0.201" (5.10mm)
250R120-R3ZR

250R120-R3ZR

PTC RESET FUSE 60V 120MA RADIAL

Littelfuse Inc.

2,117 -
RFQ
250R120-R3ZR Datasheet Radial, Disc POLY-FUSE®, 250R Tape & Box (TB) Obsolete Polymeric 60V (250V Int) 120 mA 240 mA 3 A 2.5 s 8 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) - 0.201" (5.10mm)
250R120TZR

250R120TZR

PTC RESET FUSE 60V 120MA RADIAL

Littelfuse Inc.

7,813 -
RFQ
250R120TZR Datasheet Radial, Disc POLY-FUSE®, 250R Tape & Box (TB) Obsolete Polymeric 60V (250V Int) 120 mA 240 mA 3 A 2.5 s 7 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) - 0.201" (5.10mm)
250R145-RAU

250R145-RAU

PTC RESET FUSE 60V 145MA RADIAL

Littelfuse Inc.

6,714 -
RFQ
250R145-RAU Datasheet Radial, Disc POLY-FUSE®, 250R Bulk Obsolete Polymeric 60V (250V Int) 145 mA 290 mA 3 A 2.5 s 3 Ohms 12 Ohms - -40°C ~ 85°C - - - Through Hole 0.256" L x 0.181" W (6.50mm x 4.60mm) 0.433" (11.00mm) - 0.201" (5.10mm)
250R120TU

250R120TU

PTC RESET FUSE 60V 120MA RADIAL

Littelfuse Inc.

8,131 -
RFQ
250R120TU Datasheet Radial, Disc POLY-FUSE®, 250R Bulk Obsolete Polymeric 60V (250V Int) 120 mA 240 mA 3 A 2.5 s 7 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) - 0.201" (5.10mm)
250R120-RFZR

250R120-RFZR

PTC RESET FUSE 60V 120MA RADIAL

Littelfuse Inc.

2,516 -
RFQ
250R120-RFZR Datasheet Radial, Disc POLY-FUSE®, 250R Tape & Box (TB) Obsolete Polymeric 60V (250V Int) 120 mA 240 mA 3 A 2.5 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) - 0.201" (5.10mm)
250R120-RFU

250R120-RFU

PTC RESET FUSE 60V 120MA RADIAL

Littelfuse Inc.

2,184 -
RFQ
250R120-RFU Datasheet Radial, Disc POLY-FUSE®, 250R Bulk Obsolete Polymeric 60V (250V Int) 120 mA 240 mA 3 A 2.5 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) - 0.201" (5.10mm)
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