PTC Resettable Fuses
Use the filters and product table below to compare PTC Resettable Fuses components by manufacturer, availability, pricing reference and technical specifications. Review datasheets and key parameters to narrow the selection for your application.
If you already have a target part number, package, rating or quantity, send the requirement to Winsun (HK) Electronics for availability checks, BOM sourcing, shortage support and quotation assistance.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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72R185XFPTC RESET FUSE 72V 1.85A RADIAL |
5,128 | - |
|
Datasheet | Radial, Disc | POLY-FUSE®, 72R | Bulk | Obsolete | 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 0.122" T (16.76mm x 3.10mm) | 0.906" (23.00mm) | - | 0.201" (5.10mm) |
|
72R300XFPTC RESET FUSE 72V 3A RADIAL |
9,782 | - |
|
Datasheet | Radial, Disc | POLY-FUSE®, 72R | Bulk | Obsolete | 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 0.122" T (23.11mm x 3.10mm) | 1.154" (29.30mm) | - | 0.402" (10.20mm) |
|
AHRF550SPTC RESET FUSE 16V 5.5A RADIAL |
7,528 | - |
|
Datasheet | Radial, Disc | PolySwitch®, AHRF | Bag | Active | Polymeric | 16V | 5.5 A | 10 A | 100 A | 6 s | 13 mOhms | 37 mOhms | - | -40°C ~ 125°C | Automotive | AEC-Q200 | - | Through Hole | 0.441" L x 0.118" W (11.20mm x 3.00mm) | 0.744" (18.90mm) | - | 0.200" (5.08mm) |
|
LR4-1300FPTC RESET FUSE 20V 13A STRAP |
6,292 | - |
|
Datasheet | Strap | PolySwitch®, LR4 | Bag | Active | Polymeric | 20V | 13 A | 21.2 A | 100 A | 10 s | 3.5 mOhms | 9 mOhms | - | -40°C ~ 85°C | - | - | - | User Defined | 2.520" L x 0.382" W (64.00mm x 9.70mm) | - | - | - |
|
LR4-190XFPTC RESET FUSE 15V 1.9A STRAP |
6,877 | - |
|
Datasheet | Strap | PolySwitch®, LR4 | Bag | Active | Polymeric | 15V | 1.9 A | 3.9 A | 100 A | 5 s | 39 mOhms | 102 mOhms | - | -40°C ~ 85°C | - | - | - | User Defined | 0.648" L x 0.283" W (16.45mm x 7.20mm) | - | 0.039" (1.00mm) | - |
|
LR4-550RAFPTC RESET FUSE 20V 5.5A STRAP |
5,509 | - |
|
Datasheet | Strap | PolySwitch®, LR4 | Bag | Active | Polymeric | 20V | 5.5 A | 10.5 A | 100 A | 5 s | 9 mOhms | 22 mOhms | - | -40°C ~ 85°C | - | - | - | User Defined | - | - | - | - |
|
TRF250-180-0.125POLYSWITCH PTC RESET 0.180A T/H |
4,914 | - |
|
Datasheet | Radial, Disc | PolySwitch® | Bag | Active | - | 100V | 180 mA | 650 mA | 10 A | 2 s | - | - | - | - | - | - | - | Through Hole | 0.350" Dia x 0.150" W (8.89mm x 3.81mm) | 0.472" (12.00mm) | - | 0.200" (5.08mm) |
|
TRF250-183S-0.110PTC RESET FUSE 100V 183MA RADIAL |
6,046 | - |
|
Datasheet | Radial, Disc | PolySwitch®, TRF250 | Bag | Active | Polymeric | 100V (250V Int) | 183 mA | 685 mA | 10 A | 1.8 s | 800 mOhms | 3.4 Ohms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.295" Dia x 0.150" T (7.50mm x 3.80mm) | 0.374" (9.50mm) | - | 0.200" (5.08mm) |
|
250R080TUPTC RESET FUSE 60V 80MA RADIAL |
5,485 | - |
|
Datasheet | Radial, Disc | POLY-FUSE®, 250R | Bulk | Obsolete | Polymeric | 60V (250V Int) | 80 mA | 160 mA | 3 A | 4 s | 15 Ohms | 33 Ohms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.228" Dia x 0.181" T (5.80mm x 4.60mm) | 0.390" (9.90mm) | - | 0.201" (5.10mm) |
|
MXP190BBPTC RESET FUSE 6V 1.9A STRAP |
2,549 | - |
|
Datasheet | Strap | PolySwitch®, MXP | Bag | Obsolete | Polymeric | 6V | 1.9 A | 4.9 A | 50 A | 2 s | 7 mOhms | 24 mOhms | - | - | - | - | - | User Defined | 0.394" L x 0.122" W (10.00mm x 3.11mm) | - | 0.043" (1.10mm) | - |
PTC Resettable Fuses FAQ
Common questions about filtering, comparing and sourcing PTC Resettable Fuses components.
How can I narrow the PTC Resettable Fuses selection?
Use the available manufacturer and technical parameter filters to reduce the product list. Compare the remaining part numbers against your electrical, package and application requirements.
Should I confirm the datasheet before selecting a part?
Yes. Always review the manufacturer datasheet to confirm ratings, package, operating conditions and other technical details before finalizing a component for your design.
Can Winsun (HK) Electronics help source a specific PTC Resettable Fuses part number?
Yes. Send the exact manufacturer part number and required quantity for availability, lead-time and quotation support.
Do you support BOM, shortage or alternative-part requirements?
Yes. You can submit a BOM or shortage list for sourcing assistance. Where appropriate, our team can also help review possible alternative-part options.
