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0755-82798135PTC Resettable Fuses
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 |
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RHEF100-APPTC RESET FUSE 30V 1A RADIAL |
840 | - |
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Datasheet |
Radial, Disc | PolySwitch®, RHEF | Cut Tape (CT) | Active | Polymeric | 30V | 1 A | 1.8 A | 40 A | 5.2 s | 180 mOhms | 430 mOhms | - | -40°C ~ 125°C | - | - | - | Through Hole | 0.382" Dia x 0.118" T (9.70mm x 3.00mm) | 0.535" (13.60mm) | - | 0.199" (5.05mm) |
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PFRA.185PTC RESET FUSE 30V 1.85A RADIAL |
637 | - |
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Datasheet |
Radial, Disc | PFRA | Bulk | Active | Polymeric | 30V | 1.85 A | 3.7 A | 40 A | 8.7 s | 40 mOhms | 110 mOhms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.472" Dia x 0.118" T (12.00mm x 3.00mm) | 0.724" (18.40mm) | - | 0.201" (5.10mm) |
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0ZRR0250FF1APTC RESET FUSE 60V 2.5A RADIAL |
233 | - |
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Datasheet |
Radial, Disc | 0ZRR | Bulk | Active | Polymeric | 60V | 2.5 A | 5 A | 40 A | 15.6 s | 50 mOhms | 130 mOhms | - | -40°C ~ 85°C | Automotive | AEC-Q200 | - | Through Hole | 0.839" Dia x 0.122" T (21.30mm x 3.10mm) | 1.039" (26.40mm) | - | 0.402" (10.20mm) |
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RXEF135-2PTC RESET FUSE 72V 1.35A RADIAL |
599 | - |
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Datasheet |
Radial, Disc | PolySwitch®, RXEF | Tape & Reel (TR) | Active | Polymeric | 72V | 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) |
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0ZRP0160FF1APTC RESET FUSE 60V 1.6A RADIAL |
46 | - |
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Datasheet |
Radial, Disc | 0ZRP | Bulk | Active | Polymeric | 60V | 1.6 A | 3.2 A | 40 A | 9 s | 100 mOhms | 320 mOhms | - | -40°C ~ 85°C | Automotive | AEC-Q200 | - | Through Hole | 0.480" L x 0.142" W (12.20mm x 3.60mm) | 0.720" (18.30mm) | - | 0.201" (5.10mm) |
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RUEF400-APPTC RESET FUSE 30V 4A RADIAL |
191 | - |
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Datasheet |
Radial, Disc | PolySwitch®, RUEF | Cut Tape (CT) | Active | Polymeric | 30V | 4 A | 8 A | 100 A | 12.7 s | 10 mOhms | 50 mOhms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.551" L x 0.118" W (14.00mm x 3.00mm) | 0.760" (19.30mm) | - | 0.199" (5.05mm) |
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PFRA.300PTC RESET FUSE 30V 3A RADIAL |
159 | - |
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Datasheet |
Radial, Disc | PFRA | Bulk | Active | Polymeric | 30V | 3 A | 6 A | 40 A | 10.8 s | 20 mOhms | 80 mOhms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.472" L x 0.118" W (12.00mm x 3.00mm) | 0.720" (18.30mm) | - | 0.201" (5.10mm) |
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AHRF050PTC RESET FUSE 30V 500MA RADIAL |
601 | - |
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Datasheet |
Radial, Disc | PolySwitch®, AHRF | Bag | Active | Polymeric | 30V | 500 mA | 1 A | 40 A | 3 s | 350 mOhms | 1.1 Ohms | - | -40°C ~ 125°C | Automotive | AEC-Q200 | - | Through Hole | 0.291" Dia x 0.130" T (7.40mm x 3.30mm) | 0.500" (12.70mm) | - | 0.199" (5.05mm) |
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60R090XUPTC RESET FUSE 60V 900MA RADIAL |
451 | - |
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Datasheet |
Radial, Disc | POLY-FUSE®, 60R | Bulk | Active | Polymeric | 60V | 900 mA | 1.8 A | 40 A | 7.2 s | 200 mOhms | 470 mOhms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.441" Dia x 0.122" T (11.20mm x 3.10mm) | 0.622" (15.80mm) | - | 0.201" (5.10mm) |
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RGEF500-1PTC RESET FUSE 16V 5A RADIAL |
125 | - |
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Datasheet |
Radial, Disc | PolySwitch®, RGEF | Bag | 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) |
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PRG21AR420MS1RAPTC RESET FUSE 20V 54MA 0805 |
648 | - |
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Datasheet |
0805 (2012 Metric) | POSISTOR®, PRG | Tape & Reel (TR) | Active | Ceramic | 20V | 54 mA | 100 mA | 590 mA | - | - | - | 42 Ohms | -40°C ~ 105°C | - | - | - | Surface Mount | 0.079" L x 0.049" W (2.00mm x 1.25mm) | - | 0.043" (1.10mm) | - |
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LR4-190FPTC RESET FUSE 15V 1.9A STRAP |
642 | - |
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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 | 0.827" L x 0.205" W (21.00mm x 5.20mm) | - | - | - |
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RXEF185KPTC RESET FUSE 72V 1.85A RADIAL |
390 | - |
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Datasheet |
Radial, Disc | PolySwitch®, RXEF | Bag | 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) |
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LVR016KPTC RESET FUSE 240V 160MA RADIAL |
352 | - |
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Datasheet |
Radial, Disc | PolySwitch®, LVR | Bag | Active | Polymeric | 240V (265V Int) | 160 mA | 370 mA | 2 A | 15 s | 2.5 Ohms | 7.8 Ohms | - | -20°C ~ 85°C | - | - | - | Through Hole | 0.390" Dia x 0.150" T (9.90mm x 3.80mm) | 0.543" (13.80mm) | - | 0.200" (5.08mm) |
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PTR030V0600-BKPTC RESET FUSE 30V 6A RADIAL |
290 | - |
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Datasheet |
Radial, Disc | PTR030V | Bulk | Active | Polymeric | 30V | 6 A | 12 A | 100 A | 16 s | 5 mOhms | 40 mOhms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.650" L x 0.118" W (16.50mm x 3.00mm) | 1.169" (29.70mm) | - | 0.394" (10.00mm) |
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PFRA.400PTC RESET FUSE 30V 4A RADIAL |
89 | - |
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Datasheet |
Radial, Disc | PFRA | Bulk | Active | Polymeric | 30V | 4 A | 8 A | 40 A | 12.7 s | 10 mOhms | 50 mOhms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.567" L x 0.118" W (14.40mm x 3.00mm) | 0.976" (24.80mm) | - | 0.201" (5.10mm) |
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MF-RX030/72-0PTC RESET FUSE 72V 300MA RADIAL |
477 | - |
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Datasheet |
Radial, Disc | Multifuse®, MF-RX/72 | Bulk | Active | Polymeric | 72V | 300 mA | 600 mA | 40 A | 3 s | 760 mOhms | 2.1 Ohms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.291" Dia x 0.122" T (7.40mm x 3.10mm) | 0.528" (13.40mm) | - | 0.201" (5.10mm) |
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RGEF700PTC RESET FUSE 16V 7A RADIAL |
464 | - |
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Datasheet |
Radial, Disc | PolySwitch®, RGEF | Bag | Active | Polymeric | 16V | 7 A | 11.9 A | 100 A | 3.5 s | 7.7 mOhms | 20 mOhms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.421" L x 0.098" W (10.70mm x 2.50mm) | 0.776" (19.70mm) | - | 0.199" (5.05mm) |
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MF-RX250/72-2PTC RESET FUSE 72V 2.5A RADIAL |
446 | - |
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Datasheet |
Radial, Disc | Multifuse®, MF-RX/72 | Tape & Reel (TR) | Active | Polymeric | 72V | 2.5 A | 5 A | 40 A | 15.6 s | 50 mOhms | 130 mOhms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.702" L x 0.122" W (17.84mm x 3.10mm) | 0.939" (23.84mm) | - | 0.402" (10.20mm) |
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MINIASMDC260F/13.2-2PTC RESET FUSE 13.2V 2.6A 1812 |
163 | - |
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Datasheet |
1812 (4532 Metric), Concave | PolySwitch®, miniASMD | Bulk | Active | Polymeric | 13.2V | 2.6 A | 5 A | 100 A | 5 s | 15 mOhms | 50 mOhms | - | -40°C ~ 85°C | Automotive | AEC-Q200 | - | Surface Mount | 0.181" L x 0.128" W (4.60mm x 3.24mm) | - | 0.060" (1.52mm) | - |

