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PTC Resettable Fuses

Browse available PTC Resettable Fuses part numbers with manufacturer references, stock information, pricing, datasheets and key specifications. Use the table below to compare options for your project.

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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
RS90-055 OptiFuse

RS90-055

PTC RESET FUSE 72V 550MA RADIAL

OptiFuse

484 -
Datasheet Radial, Disc RS90 Bulk Active Polymeric 72V (90V Int) 550 mA 1.2 A 40 A 10 s 400 mOhms 1.5 Ohms - -40°C ~ 85°C - - - Through Hole 0.382" Dia x 0.122" T (9.70mm x 3.10mm) 0.551" (14.00mm) - 0.201" (5.10mm)
RS90-050 OptiFuse

RS90-050

PTC RESET FUSE 72V 500MA RADIAL

OptiFuse

472 -
Datasheet Radial, Disc RS90 Bulk Active Polymeric 72V (90V Int) 500 mA 1 A 40 A 4 s 500 mOhms 1.17 Ohms - -40°C ~ 85°C - - - Through Hole 0.311" Dia x 0.122" T (7.90mm x 3.10mm) 0.539" (13.70mm) - 0.201" (5.10mm)
RS30-090 OptiFuse

RS30-090

PTC RESET FUSE 30V 900MA RADIAL

OptiFuse

386 -
Datasheet Radial, Disc RS30 Bulk Active Polymeric 30V 900 mA 1.8 A 100 A 5.9 s 70 mOhms 220 mOhms - -40°C ~ 85°C - - - Through Hole 0.291" L x 0.118" W (7.40mm x 3.00mm) 0.480" (12.20mm) - 0.201" (5.10mm)
RGEF500-AP Littelfuse Inc.

RGEF500-AP

PTC RESET FUSE 16V 5A RADIAL

Littelfuse Inc.

152 -
Datasheet Radial, Disc PolySwitch®, RGEF Cut Tape (CT) Active Polymeric 16V 5 A 8.5 A 100 A 2 s 15 mOhms 34 mOhms - -40°C ~ 85°C - - - Through Hole 0.390" L x 0.098" W (9.90mm x 2.50mm) 0.563" (14.30mm) - 0.199" (5.05mm)
PICOASMDCH035F-2 Littelfuse Inc.

PICOASMDCH035F-2

PPTC-MINI-PSW

Littelfuse Inc.

744 -
Datasheet 0805 (2012 Metric), Concave PolySwitch®, picoASMD Tape & Reel (TR) Active Polymeric 16V 350 mA 1.1 A 40 A 100 ms 300 mOhms 1.9 Ohms - -40°C ~ 125°C Automotive AEC-Q200 - Surface Mount 0.083" L x 0.055" W (2.10mm x 1.40mm) - 0.047" (1.20mm) -
RXEF185-AP Littelfuse Inc.

RXEF185-AP

PTC RESET FUSE 72V 1.85A RADIAL

Littelfuse Inc.

209 -
Datasheet Radial, Disc PolySwitch®, RXEF Cut Tape (CT) Active Polymeric 72V 1.85 A 3.7 A 40 A 12.6 s 80 mOhms 190 mOhms - -40°C ~ 85°C - - - Through Hole 0.689" Dia x 0.118" T (17.50mm x 3.00mm) 0.882" (22.40mm) - 0.199" (5.05mm)
RXEF185K-AP Littelfuse Inc.

RXEF185K-AP

PTC RESET FUSE 72V 1.85A RADIAL

Littelfuse Inc.

218 -
Datasheet Radial, Disc PolySwitch®, RXEF Cut Tape (CT) 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)
FRV100-240F RFE/Fuzetec

FRV100-240F

RESETTABLE FUSE - PPTC RADIAL LE

RFE/Fuzetec

240 -
Datasheet Radial, Disc FRV Bulk Active - 240V (265V Int) 1 A 2 A 10 A 21 s 220 mOhms 580 mOhms - -20°C ~ 85°C - - - Through Hole 0.736" Dia (18.70mm) 0.961" (24.40mm) - 0.402" (10.20mm)
RS90-065 OptiFuse

RS90-065

PTC RESET FUSE 72V 650MA RADIAL

OptiFuse

229 -
Datasheet Radial, Disc RS90 Bulk Active Polymeric 72V (90V Int) 650 mA 1.3 A 40 A 5.3 s 310 mOhms 720 mOhms - -40°C ~ 85°C - - - Through Hole 0.382" Dia x 0.122" T (9.70mm x 3.10mm) 0.571" (14.50mm) - 0.201" (5.10mm)
RS90-075 OptiFuse

RS90-075

PTC RESET FUSE 72V 750MA RADIAL

OptiFuse

249 -
Datasheet Radial, Disc RS90 Bulk Active Polymeric 72V (90V Int) 750 mA 1.5 A 40 A 6.3 s 250 mOhms 600 mOhms - -40°C ~ 85°C - - - Through Hole 0.409" Dia x 0.122" T (10.40mm x 3.10mm) 0.598" (15.20mm) - 0.201" (5.10mm)
MF-RX018/250-0 Bourns Inc.

MF-RX018/250-0

PTC RESET FUSE 60V 180MA RADIAL

Bourns Inc.

1,527 -
Datasheet Radial, Disc Multifuse®, MF-RX/250 Bulk Active Polymeric 60V (250V Int) 180 mA - 10 A - 800 mOhms 4 Ohms - -40°C ~ 85°C - - - Through Hole 0.433" L x 0.181" W (11.00mm x 4.60mm) 0.535" (13.60mm) - 0.201" (5.10mm)
RUEF500K-AP Littelfuse Inc.

RUEF500K-AP

PTC RESET FUSE 30V 5A RADIAL

Littelfuse Inc.

1,578 -
Datasheet Radial, Disc PolySwitch®, RUEF Cut Tape (CT) Active Polymeric 30V 5 A 10 A 100 A 14.5 s 10 mOhms 50 mOhms - -40°C ~ 85°C - - - Through Hole 0.551" L x 0.118" W (14.00mm x 3.00mm) 1.008" (25.60mm) - 0.400" (10.15mm)
FRV125-240F RFE/Fuzetec

FRV125-240F

RESETTABLE FUSE - PPTC RADIAL LE

RFE/Fuzetec

220 -
Datasheet Radial, Disc FRV Bulk Active - 240V (265V Int) 1.25 A 2.5 A 12.5 A 23 s 170 mOhms 440 mOhms - -20°C ~ 85°C - - - Through Hole 0.835" Dia (21.20mm) 1.079" (27.40mm) - 0.402" (10.20mm)
0ZSC0260FF1E Bel Fuse Inc.

0ZSC0260FF1E

PTC RESET FUSE 20V 2.6A STRAP

Bel Fuse Inc.

710 -
Datasheet Strap 0ZSC Bulk Active Polymeric 20V 2.6 A 5.8 A 100 A 5 s 20 mOhms 63 mOhms - -40°C ~ 85°C - - - User Defined 0.866" L x 0.205" W (22.00mm x 5.20mm) - 0.039" (1.00mm) -
R2920-100-60-R OptiFuse

R2920-100-60-R

PTC RESET FUSE 60V 1.1A 2920

OptiFuse

1,000 -
Datasheet 2920 (7351 Metric), Concave R2920 Tape & Reel (TR) Active Polymeric 60V 1.1 A 2.2 A 100 A 500 ms 90 mOhms 410 mOhms - -40°C ~ 85°C - - - Surface Mount 0.290" L x 0.202" W (7.36mm x 5.12mm) - 0.067" (1.70mm) -
RS120-025 OptiFuse

RS120-025

PTC RESET FUSE 120V 250MA RADIAL

OptiFuse

913 -
Datasheet Radial, Disc RS120 Bulk Active Polymeric 120V (135V Int) 250 mA 500 mA 3 A 7.5 s 1.25 Ohms 3 Ohms - -40°C ~ 85°C - - - Through Hole 0.311" Dia x 0.150" T (7.90mm x 3.80mm) 0.512" (13.00mm) - 0.201" (5.10mm)
RS90-110 OptiFuse

RS90-110

PTC RESET FUSE 72V 1.1A RADIAL

OptiFuse

499 -
Datasheet Radial, Disc RS90 Bulk Active Polymeric 72V (90V Int) 1.1 A 2.2 A 40 A 8.2 s 150 mOhms 380 mOhms - -40°C ~ 85°C - - - Through Hole 0.512" Dia x 0.122" T (13.00mm x 3.10mm) 0.709" (18.00mm) - 0.201" (5.10mm)
RS120-010 OptiFuse

RS120-010

PTC RESET FUSE 120V 100MA RADIAL

OptiFuse

1,781 -
Datasheet Radial, Disc RS120 Bulk Active Polymeric 120V (135V Int) 100 mA 200 mA 2 A 10 s 3 Ohms 7.5 Ohms - -40°C ~ 85°C - - - Through Hole 0.311" Dia x 0.150" T (7.90mm x 3.80mm) 0.512" (13.00mm) - 0.201" (5.10mm)
FRV150-240F RFE/Fuzetec

FRV150-240F

RESETTABLE FUSE - PPTC RADIAL LE

RFE/Fuzetec

250 -
Datasheet Radial, Disc FRV Bulk Active - 240V (265V Int) 1.5 A 3 A 15 A 23 s 120 mOhms 320 mOhms - -20°C ~ 85°C - - - Through Hole 0.921" Dia (23.40mm) 1.217" (30.90mm) - 0.402" (10.20mm)
LVR040S-2 Littelfuse Inc.

LVR040S-2

PTC RESET FUSE 240V 400MA RADIAL

Littelfuse Inc.

385 -
Datasheet Radial, Disc PolySwitch®, LVR Tape & Reel (TR) 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) 0.768" (19.50mm) - 0.200" (5.08mm)
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PTC Resettable Fuses FAQ

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What should I check when selecting PTC Resettable Fuses components?

Compare the manufacturer part number, electrical specifications, package, operating conditions and application requirements. The product datasheet should be used to confirm technical suitability.

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Yes. Send the exact part number, manufacturer and required quantity. Winsun (HK) Electronics can assist with availability checks, quotation support and sourcing options based on your requirement.

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Yes. Our sourcing team can review shortage and obsolete-part requirements and help check available supply channels or possible alternatives when appropriate.

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Submit an RFQ with the part number, manufacturer, quantity and target delivery requirement. Our sales team will review your request and follow up with current sourcing information.