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PTC Resettable Fuses

Review PTC Resettable Fuses Circuit Protection components in this filtered selection. Compare manufacturer information, availability, pricing, datasheets and key specifications to narrow down suitable parts for your application.

If the exact part or specification you need is not listed, send the manufacturer part number, target parameters and quantity to JIEXIN Electronics for sourcing and quotation support.

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
250R120-RCZR Littelfuse Inc.

250R120-RCZR

PTC RESET FUSE 60V 120MA RADIAL

Littelfuse Inc.

5,407
Datasheet Radial, Disc POLY-FUSE®, 250R Cut Tape (CT) Active Polymeric 60V (250V Int) 120 mA 240 mA 3 A 3 s 5.4 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) - 0.201" (5.10mm)
2920L600/12MR-A Littelfuse Inc.

2920L600/12MR-A

PTC RESET FUSE 12V 6A 2920

Littelfuse Inc.

2,367
Datasheet 2920 (7351 Metric), Concave POLY-FUSE®, 2920L Tape & Reel (TR) Active Polymeric 12V 6 A 12 A 50 A 2 s 4 mOhms 20 mOhms - -40°C ~ 85°C - - - Surface Mount 0.290" L x 0.202" W (7.36mm x 5.12mm) - 0.063" (1.60mm) -
AHRF600-2 Littelfuse Inc.

AHRF600-2

PTC RESET FUSE 16V 6A RADIAL

Littelfuse Inc.

1,998
Datasheet Radial, Disc PolySwitch®, AHRF Tape & Reel (TR) Active Polymeric 16V 6 A 12 A 100 A 6.5 s 10 mOhms 32 mOhms - -40°C ~ 125°C Automotive AEC-Q200 - Through Hole 0.441" L x 0.118" W (11.20mm x 3.00mm) 0.827" (21.00mm) - 0.200" (5.08mm)
MICROASMDCH150F-2 Littelfuse Inc.

MICROASMDCH150F-2

PPTC-MINI-PSW

Littelfuse Inc.

1,215
Datasheet 1210 (3225 Metric), Concave PolySwitch®, microASMD Tape & Reel (TR) Active Polymeric 12V 1.5 A 4.5 A 40 A 1 s 25 mOhms 250 mOhms - -40°C ~ 85°C Automotive AEC-Q200 - Surface Mount 0.127" L x 0.101" W (3.22mm x 2.58mm) - 0.055" (1.40mm) -
TRF250-145T-B-0.5 Littelfuse Inc.

TRF250-145T-B-0.5

PTC RESET FUSE 60V 145MA RADIAL

Littelfuse Inc.

1,970
Datasheet Radial, Disc PolySwitch®, TRF250 Bag Active Polymeric 60V (250V Int) 145 mA 290 mA 3 A 2.5 s 5.4 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)
LSP550 Littelfuse Inc.

LSP550

PTC RESET FUSE 16V 5.5A

Littelfuse Inc.

9,778
Datasheet Strap PolySwitch®, LSP Bag Active Polymeric 16V 5.5 A 10.2 A 50 A 5 s 8 mOhms 26 mOhms 13 mOhms -40°C ~ 85°C Automotive AEC-Q200 - User Defined 0.787" L x 0.402" W (20.00mm x 10.20mm) - 0.035" (0.90mm) -
AHRL700 Littelfuse Inc.

AHRL700

PTC RESET FUSE 7A 16V RAD

Littelfuse Inc.

138
Datasheet Radial, Disc PolySwitch®, AHRL Bulk Active Polymeric 16V 7 A 14 A 100 A 6.8 s 8.5 mOhms 14 mOhms - -40°C ~ 125°C Automotive AEC-Q200 - Through Hole 0.465" L x 0.118" W (11.80mm x 3.00mm) 0.685" (17.40mm) - 0.199" (5.05mm)
RXEF300K Littelfuse Inc.

RXEF300K

PTC RESET FUSE 72V 3A RADIAL

Littelfuse Inc.

362
Datasheet Radial, Disc PolySwitch®, RXEF Bag Active Polymeric 72V 3 A 6 A 40 A 19.8 s 40 mOhms 100 mOhms - -40°C ~ 85°C - - - Through Hole 0.910" Dia x 0.118" T (23.11mm x 3.00mm) 1.154" (29.30mm) - 0.400" (10.15mm)
AGRF800-2 Littelfuse Inc.

AGRF800-2

PTC RESET FUSE 16V 8A RADIAL

Littelfuse Inc.

234
Datasheet Radial, Disc PolySwitch®, AGRF Tape & Reel (TR) Active Polymeric 16V 8 A 15 A 100 A 5.5 s 4.9 mOhms 17.5 mOhms - -40°C ~ 85°C Automotive AEC-Q200 - Through Hole 0.500" L x 0.118" W (12.70mm x 3.00mm) 0.874" (22.20mm) - 0.199" (5.05mm)
TRF600-150S-2 Littelfuse Inc.

TRF600-150S-2

PTC RESET FUSE 250V 150MA RADIAL

Littelfuse Inc.

635
Datasheet Radial, Disc PolySwitch®, TRF600 Tape & Reel (TR) Active Polymeric 250V (600V Int) 150 mA 300 mA 40 A 4 s 6 Ohms 17 Ohms - -40°C ~ 85°C - - - Through Hole 0.354" L x 0.181" W (9.00mm x 4.60mm) 0.492" (12.50mm) - 0.197" (5.00mm)
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FAQ

Frequently Asked Questions

What are PTC Resettable Fuses components used for?

PTC Resettable Fuses components are used in a wide range of electronic equipment and systems. Their exact function depends on the device, circuit design and technical requirements of the application.

How do I choose the right PTC Resettable Fuses part?

Compare the manufacturer part number, key specifications, package type, operating conditions, availability and datasheet information. For replacement projects, always verify the critical electrical and mechanical parameters before selecting an alternative.

Can JIEXIN Electronics help source obsolete or hard-to-find PTC Resettable Fuses parts?

Yes. Send us the required manufacturer part number, quantity or BOM. Our sourcing team can help check stock availability, lead time, alternative sourcing options and quotation details.

How can I request pricing and availability?

Submit the part number, manufacturer and required quantity through our RFQ form. JIEXIN Electronics will review your request and provide available stock, pricing and sourcing information.

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