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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-SM150-2PTC RESET FUSE 15V 1.5A 2SMD |
3,735 | - |
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Datasheet |
2-SMD | Multifuse®, MF-SM | Tape & Reel (TR) | Active | Polymeric | 15V | 1.5 A | 3 A | 100 A | 5 s | 60 mOhms | 250 mOhms | - | -40°C ~ 85°C | Automotive | AEC-Q200 | - | Surface Mount | 0.344" L x 0.264" W (8.75mm x 6.71mm) | - | 0.118" (3.00mm) | - |
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MINIASMDC020F-2PTC RESET FUSE 30V 200MA 1812 |
2,826 | - |
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Datasheet |
1812 (4532 Metric), Concave | PolySwitch®, miniASMD | Tape & Reel (TR) | Active | Polymeric | 30V | 200 mA | 400 mA | 10 A | 20 ms | 600 mOhms | 3.3 Ohms | - | -40°C ~ 85°C | Automotive | AEC-Q200 | - | Surface Mount | 0.179" L x 0.128" W (4.55mm x 3.24mm) | - | 0.035" (0.89mm) | - |
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PRG21AR220MS1RKPTC RESET FUSE 16V 75MA 0805 |
2,600 | - |
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Datasheet |
0805 (2012 Metric) | POSISTOR®, PRG | Tape & Reel (TR) | Active | Ceramic | 16V | 75 mA | 195 mA | 900 mA | - | - | - | 22 Ohms | -40°C ~ 105°C | - | - | - | Surface Mount | 0.079" L x 0.049" W (2.00mm x 1.25mm) | - | 0.057" (1.45mm) | - |
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MF-SMDF150-2PTC RESET FUSE 15V 1.5A 2018 |
57,674 | - |
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Datasheet |
2018 (5045 Metric), Concave | Multifuse®, MF-SMDF | Tape & Reel (TR) | Active | Polymeric | 15V | 1.5 A | 3 A | 40 A | 800 ms | 50 mOhms | 170 mOhms | - | -40°C ~ 85°C | - | - | - | Surface Mount | 0.200" L x 0.180" W (5.08mm x 4.58mm) | - | 0.033" (0.85mm) | - |
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MF-R075-2PTC RESET FUSE 60V 750MA RADIAL |
21,356 | - |
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Datasheet |
Radial, Disc | Multifuse®, MF-R | Tape & Reel (TR) | 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-R185PTC RESET FUSE 30V 1.85A RADIAL |
11,232 | - |
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Datasheet |
Radial, Disc | Multifuse®, MF-R | 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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RXEF065-2PTC RESET FUSE 72V 650MA RADIAL |
10,420 | - |
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Datasheet |
Radial, Disc | PolySwitch®, RXEF | Tape & Reel (TR) | Active | Polymeric | 72V | 650 mA | 1.3 A | 40 A | 5.3 s | 310 mOhms | 720 mOhms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.370" Dia x 0.118" T (9.40mm x 3.00mm) | 0.571" (14.50mm) | - | 0.200" (5.08mm) |
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MF-R160PTC RESET FUSE 30V 1.6A RADIAL |
4,872 | - |
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Datasheet |
Radial, Disc | Multifuse®, MF-R | Bulk | Active | Polymeric | 30V | 1.6 A | 3.2 A | 40 A | 8 s | 55 mOhms | 150 mOhms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.402" Dia x 0.118" T (10.20mm x 3.00mm) | 0.661" (16.80mm) | - | 0.201" (5.10mm) |
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RXEF090PTC RESET FUSE 72V 900MA RADIAL |
4,704 | - |
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Datasheet |
Radial, Disc | PolySwitch®, RXEF | Bag | Active | Polymeric | 72V | 900 mA | 1.8 A | 40 A | 7.2 s | 200 mOhms | 470 mOhms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.441" Dia x 0.118" T (11.20mm x 3.00mm) | 0.622" (15.80mm) | - | 0.199" (5.05mm) |
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RUEF160-2PTC RESET FUSE 30V 1.6A RADIAL |
4,653 | - |
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Datasheet |
Radial, Disc | PolySwitch®, RUEF | Tape & Reel (TR) | Active | Polymeric | 30V | 1.6 A | 3.2 A | 100 A | 8 s | 30 mOhms | 110 mOhms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.350" L x 0.118" W (8.90mm x 3.00mm) | 0.598" (15.20mm) | - | 0.199" (5.05mm) |
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MINISMDC300F-2PTC RESET FUSE 6V 3A 1812 |
4,330 | - |
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Datasheet |
1812 (4532 Metric), Concave | PolySwitch®, miniSMD | Tape & Reel (TR) | Active | Polymeric | 6V | 3 A | 6 A | 100 A | 5 s | 11 mOhms | 36 mOhms | - | -40°C ~ 85°C | - | - | - | Surface Mount | 0.179" L x 0.128" W (4.55mm x 3.24mm) | - | 0.030" (0.76mm) | - |
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RKEF050-APPTC RESET FUSE 60V 500MA RADIAL |
3,898 | - |
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Datasheet |
Radial, Disc | PolySwitch®, RKEF | Cut Tape (CT) | Active | Polymeric | 60V | 500 mA | 1 A | 40 A | 800 ms | 320 mOhms | 900 mOhms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.280" L x 0.140" W (7.10mm x 3.56mm) | 0.450" (11.43mm) | - | 0.199" (5.05mm) |
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0ZRE0012FF1CPTC RESET FUSE 240V 120MA RADIAL |
3,770 | - |
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Datasheet |
Radial, Disc | 0ZRE | Box | Active | Polymeric | 240V | 120 mA | 300 mA | 2 A | 15 s | 3 Ohms | 12 Ohms | - | -40°C ~ 85°C | Automotive | AEC-Q200 | - | Through Hole | 0.327" L x 0.150" W (8.30mm x 3.80mm) | 0.421" (10.70mm) | - | 0.201" (5.10mm) |
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60R020XPRPTC RESET FUSE 60V 200MA RADIAL |
2,882 | - |
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Datasheet |
Radial, Disc | POLY-FUSE®, 60R | Cut Tape (CT) | Active | Polymeric | 60V | 200 mA | 400 mA | 40 A | 2.2 s | 1.83 Ohms | 4.4 Ohms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.291" Dia x 0.122" T (7.40mm x 3.10mm) | 0.461" (11.70mm) | - | 0.201" (5.10mm) |
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RXEF005-2PTC RESET FUSE 60V 50MA RADIAL |
2,203 | - |
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Datasheet |
Radial, Disc | PolySwitch®, RXEF | Tape & Reel (TR) | Active | Polymeric | 60V | 50 mA | 100 mA | 40 A | 5 s | 7.3 Ohms | 20 Ohms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.315" Dia x 0.118" T (8.00mm x 3.00mm) | 0.327" (8.30mm) | - | 0.199" (5.05mm) |
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RUEF185-2PTC RESET FUSE 30V 1.85A RADIAL |
40,617 | - |
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Datasheet |
Radial, Disc | PolySwitch®, RUEF | Tape & Reel (TR) | Active | Polymeric | 30V | 1.85 A | 3.7 A | 100 A | 8.7 s | 30 mOhms | 90 mOhms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.402" L x 0.118" W (10.20mm x 3.00mm) | 0.618" (15.70mm) | - | 0.199" (5.05mm) |
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MF-RX135/72-2PTC RESET FUSE 72V 1.35A RADIAL |
32,299 | - |
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Datasheet |
Radial, Disc | Multifuse®, MF-RX/72 | 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 | 0.483" L x 0.122" W (12.26mm x 3.10mm) | 0.718" (18.26mm) | - | 0.201" (5.10mm) |
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1206L075THYRPTC RESET FUSE 8V 750MA 1206 |
12,537 | - |
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Datasheet |
1206 (3216 Metric), Concave | POLY-FUSE®, 1206L | Tape & Reel (TR) | Active | Polymeric | 8V | 750 mA | 1.5 A | 100 A | 200 ms | 90 mOhms | 290 mOhms | - | -40°C ~ 85°C | - | - | - | Surface Mount | 0.126" L x 0.065" W (3.20mm x 1.65mm) | - | 0.030" (0.75mm) | - |
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MF-FSML125/8-2PTC RESET FUSE 8V 1.25A 0603 |
6,998 | - |
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Datasheet |
0603 (1608 Metric), Concave | Multifuse®, MF-FSML | Tape & Reel (TR) | Active | Polymeric | 8V | 1.25 A | 2.5 A | 50 A | 3 s | 20 mOhms | 180 mOhms | - | -40°C ~ 85°C | - | - | - | Surface Mount | 0.065" L x 0.033" W (1.65mm x 0.85mm) | - | 0.028" (0.70mm) | - |
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MF-PSML300/6-2PTC RESET FUSE 6V 3A 0805 |
2,970 | - |
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Datasheet |
0805 (2012 Metric), Concave | Multifuse®, MF-PSML/X | Tape & Reel (TR) | Active | Polymeric | 6V | 3 A | 6 A | 50 A | 5 s | 3 mOhms | 20 mOhms | - | -40°C ~ 85°C | - | - | - | Surface Mount | 0.085" L x 0.053" W (2.15mm x 1.35mm) | - | 0.055" (1.40mm) | - |

