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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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MF-RHT450-0PTC RESET FUSE 16V 4.5A RADIAL |
7,227 | - |
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Datasheet |
Radial, Disc | Multifuse®, MF-RHT | Bulk | Active | Polymeric | 16V | 4.5 A | 7.8 A | 100 A | 3 s | 22 mOhms | 54 mOhms | - | -40°C ~ 125°C | Automotive | AEC-Q200 | - | Through Hole | 0.409" L x 0.118" W (10.40mm x 3.00mm) | 0.614" (15.60mm) | - | 0.114" (2.90mm) |
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MF-LS180PTC RESET FUSE 24V 1.8A STRAP |
6,005 | - |
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Datasheet |
Strap | Multifuse®, MF-LS | Bulk | Active | Polymeric | 24V | 1.8 A | 3.8 A | 100 A | 2.9 s | 40 mOhms | 120 mOhms | - | -40°C ~ 85°C | - | - | - | User Defined | 0.984" L x 0.199" W (25.00mm x 5.05mm) | - | 0.039" (1.00mm) | - |
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NANOASMDCH010F-2PPTC-MINI-PSW |
4,000 | - |
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Datasheet |
1206 (3216 Metric), Concave | PolySwitch®nanoASMDCH | Tape & Reel (TR) | Active | Polymeric | 30V | 100 mA | 300 mA | 20 A | 5 s | 1 Ohms | 7.5 Ohms | - | -40°C ~ 125°C | Automotive | AEC-Q200 | - | Surface Mount | 0.126" L x 0.063" W (3.20mm x 1.59mm) | - | 0.033" (0.85mm) | - |
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AGRF400-2PTC RESET FUSE 16V 4A RADIAL |
2,359 | - |
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Datasheet |
Radial, Disc | PolySwitch®, AGRF | Tape & Reel (TR) | Active | Polymeric | 16V | 4 A | 7.6 A | 100 A | 2 s | 18.6 mOhms | 61 mOhms | - | -40°C ~ 85°C | Automotive | AEC-Q200 | - | Through Hole | 0.350" L x 0.118" W (8.90mm x 3.00mm) | 0.555" (14.10mm) | - | 0.199" (5.05mm) |
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0ZRR0300FF2APTC RESET FUSE 60V 3A RADIAL |
2,159 | - |
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Datasheet |
Radial, Disc | 0ZRR | Tape & Reel (TR) | Active | Polymeric | 60V | 3 A | 6 A | 40 A | 19.8 s | 40 mOhms | 100 mOhms | - | -40°C ~ 85°C | Automotive | AEC-Q200 | - | Through Hole | 0.980" Dia x 0.122" T (24.90mm x 3.10mm) | 1.181" (30.00mm) | - | 0.402" (10.20mm) |
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MF-R075-APPTC RESET FUSE 60V 750MA RADIAL |
11,877 | - |
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Datasheet |
Radial, Disc | Multifuse®, MF-R | Cut Tape (CT) | Active | Polymeric | 60V | 750 mA | 1.5 A | 40 A | 6.3 s | 180 mOhms | 600 mOhms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.409" Dia x 0.122" T (10.40mm x 3.10mm) | 0.630" (16.00mm) | - | 0.201" (5.10mm) |
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MF-SMDF030-2PTC RESET FUSE 60V 300MA 2018 |
5,669 | - |
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Datasheet |
2018 (5045 Metric), Concave | Multifuse®, MF-SMDF | Tape & Reel (TR) | Active | Polymeric | 60V | 300 mA | 800 mA | 20 A | 1.5 s | 450 mOhms | 2.2 Ohms | - | -40°C ~ 85°C | - | - | - | Surface Mount | 0.200" L x 0.180" W (5.08mm x 4.58mm) | - | 0.043" (1.09mm) | - |
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0ZRC0375FF1APTC RESET FUSE 90V 3.75A RADIAL |
4,853 | - |
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Datasheet |
Radial, Disc | 0ZRC | Box | Active | Polymeric | 90V | 3.75 A | 7.5 A | 40 A | 24 s | 30 mOhms | 80 mOhms | - | -40°C ~ 85°C | Automotive | AEC-Q200 | - | Through Hole | 1.122" L x 0.122" W (28.50mm x 3.10mm) | 1.319" (33.50mm) | - | 0.402" (10.20mm) |
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MF-USMF150-2PTC RESET FUSE 6V 1.5A 1210 |
4,362 | - |
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Datasheet |
1210 (3225 Metric), Concave | Multifuse®, MF-USMF | Tape & Reel (TR) | Active | Polymeric | 6V | 1.5 A | 3 A | 40 A | 5 s | 30 mOhms | 110 mOhms | - | -40°C ~ 85°C | Automotive | AEC-Q200 | - | Surface Mount | 0.127" L x 0.102" W (3.22mm x 2.58mm) | - | 0.033" (0.85mm) | - |
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MF-RX050/72-0PTC RESET FUSE 72V 500MA RADIAL |
2,298 | - |
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Datasheet |
Radial, Disc | Multifuse®, MF-RX/72 | Bulk | Active | Polymeric | 72V | 500 mA | 1 A | 40 A | 4 s | 410 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) |
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RHEF400PTC RESET FUSE 16V 4A RADIAL |
2,195 | - |
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Datasheet |
Radial, Disc | PolySwitch®, RHEF | Bag | Active | Polymeric | 16V | 4 A | 7.5 A | 100 A | 5 s | 24 mOhms | 60 mOhms | - | -40°C ~ 125°C | - | - | - | Through Hole | 0.394" L x 0.118" W (10.00mm x 3.00mm) | 0.591" (15.00mm) | - | 0.199" (5.05mm) |
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MF-R050-0-17PTC RESETTABLE 0.5A 60V RADIAL L |
2,090 | - |
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Datasheet |
Radial, Disc | Multifuse®, MF-R | Bulk | Active | Polymeric | 60V | 500 mA | 1 A | 40 A | 4 s | 410 mOhms | 1.17 Ohms | - | -40°C ~ 85°C | Automotive | AEC-Q200 | - | Through Hole | 0.311" Dia x 0.122" T (7.90mm x 3.10mm) | 0.539" (13.70mm) | - | 0.201" (5.10mm) |
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CMF-RL55A-0PTC RESET FUSE 220V 50MA RADIAL |
1,798 | - |
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Datasheet |
Radial, Disc | CMF-RL | Bulk | Active | Ceramic | 220V (600V Int) | 50 mA | 100 mA | 3 A | 100 ms | - | - | 55 Ohms | -40°C ~ 125°C | - | - | - | Through Hole | 0.295" L x 0.220" W (7.50mm x 5.60mm) | 0.512" (13.00mm) | - | 0.197" (5.00mm) |
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MF-RG700-2PTC RESET FUSE 16V 7A RADIAL |
1,633 | - |
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Datasheet |
Radial, Disc | Multifuse®, MF-RG | Tape & Reel (TR) | Active | Polymeric | 16V | 7 A | 11.9 A | 100 A | 8 s | 8 mOhms | 21 mOhms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.441" Dia x 0.118" T (11.20mm x 3.00mm) | 0.740" (18.80mm) | - | 0.201" (5.10mm) |
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MF-RX040/72-0PTC RESET FUSE 72V 400MA RADIAL |
1,601 | - |
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Datasheet |
Radial, Disc | Multifuse®, MF-RX/72 | Bulk | Active | Polymeric | 72V | 400 mA | 800 mA | 40 A | 3.9 s | 520 mOhms | 1.29 Ohms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.291" Dia x 0.122" T (7.40mm x 3.10mm) | 0.539" (13.70mm) | - | 0.201" (5.10mm) |
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RGEF700K-2PTC RESET FUSE 16V 7A RADIAL |
4,783 | - |
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Datasheet |
Radial, Disc | PolySwitch®, RGEF | Tape & Reel (TR) | 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) | 0.874" (22.20mm) | - | 0.199" (5.05mm) |
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SMD2920B500TFPTC RESET FUSE 12V 5A 2920 |
2,740 | - |
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Datasheet |
2920 (7351 Metric), Concave | SMD2920 | Tape & Reel (TR) | Active | Polymeric | 12V | 5 A | 10 A | 40 A | 5 s | 5 mOhms | 31 mOhms | - | -40°C ~ 85°C | - | - | - | Surface Mount | 0.290" L x 0.202" W (7.36mm x 5.12mm) | - | 0.063" (1.60mm) | - |
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0ZRE0040FF1APTC RESET FUSE 240V 400MA RADIAL |
2,560 | - |
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Datasheet |
Radial, Disc | 0ZRE | Box | Active | Polymeric | 240V | 400 mA | 900 mA | 7 A | 24 s | 600 mOhms | 1.9 Ohms | - | -40°C ~ 85°C | Automotive | AEC-Q200 | - | Through Hole | 0.453" L x 0.150" W (11.50mm x 3.80mm) | 0.768" (19.50mm) | - | 0.201" (5.10mm) |
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MF-NSMF125-21206 POLYMER PTC 1.25A/6V |
1,324 | - |
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Datasheet |
1206 (3216 Metric), Concave | Multifuse®, MF-NSMF | Tape & Reel (TR) | Active | Polymeric | 6V | 1.25 A | 2.5 A | 100 A | 200 ms | 50 mOhms | 140 mOhms | - | -40°C ~ 85°C | Automotive | AEC-Q200 | - | Surface Mount | 0.126" L x 0.063" W (3.20mm x 1.60mm) | - | 0.028" (0.70mm) | - |
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MF-SM013/250-2PTC RESET FUSE 60V 130MA 2SMD |
11,915 | - |
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Datasheet |
2-SMD | Multifuse®, MF-SM/250 | Tape & Reel (TR) | Active | Polymeric | 60V (250V Int) | 130 mA | - | 3 A | - | 6.5 Ohms | 20 Ohms | - | -45°C ~ 85°C | - | - | - | Surface Mount | 0.350" L x 0.283" W (8.90mm x 7.20mm) | - | 0.402" (10.20mm) | - |

