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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-VS210SS-0PTC RESET FUSE 16V 2.1A STRAP |
2,826 | - |
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Datasheet |
Strap | Multifuse®, MF-VS | Bulk | Obsolete | Polymeric | 16V | 2.1 A | 4.7 A | 100 A | 5 s | 18 mOhms | 60 mOhms | - | -40°C ~ 85°C | - | - | - | User Defined | 0.866" L x 0.205" W (22.00mm x 5.20mm) | - | 0.035" (0.90mm) | - |
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MF-S175SPTC RESET FUSE 15V 1.75A STRAP |
8,724 | - |
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Datasheet |
Strap | Multifuse®, MF-S | Bulk | Obsolete | Polymeric | 15V | 1.75 A | 3.8 A | 100 A | 4 s | 50 mOhms | 120 mOhms | - | -40°C ~ 85°C | - | - | - | User Defined | 0.827" L x 0.199" W (21.00mm x 5.05mm) | - | 0.039" (1.00mm) | - |
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MF-S175SS-0PTC RESET FUSE 15V 1.75A STRAP |
9,143 | - |
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Datasheet |
Strap | Multifuse®, MF-S | Bulk | Obsolete | Polymeric | 15V | 1.75 A | 3.8 A | 100 A | 4 s | 50 mOhms | 120 mOhms | - | -40°C ~ 85°C | - | - | - | User Defined | 0.866" L x 0.199" W (22.00mm x 5.05mm) | - | 0.039" (1.00mm) | - |
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MF-S200SPTC RESET FUSE 30V 2A STRAP |
9,542 | - |
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Datasheet |
Strap | Multifuse®, MF-S | Bulk | Obsolete | Polymeric | 30V | 2 A | 4.4 A | 100 A | 4 s | 30 mOhms | 80 mOhms | - | -40°C ~ 85°C | - | - | - | User Defined | 0.880" L x 0.417" W (22.35mm x 10.60mm) | - | 0.043" (1.10mm) | - |
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MF-S350SPTC RESET FUSE 30V 3.5A STRAP |
2,282 | - |
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Datasheet |
Strap | Multifuse®, MF-S | Bulk | Obsolete | Polymeric | 30V | 3.5 A | 6.3 A | 100 A | 3 s | 17 mOhms | 40 mOhms | - | -40°C ~ 85°C | - | - | - | User Defined | 1.185" L x 0.522" W (30.10mm x 13.25mm) | - | 0.043" (1.10mm) | - |
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MF-S420SPTC RESET FUSE 30V 4.2A STRAP |
4,783 | - |
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Datasheet |
Strap | Multifuse®, MF-S | Bulk | Obsolete | Polymeric | 30V | 4.2 A | 7.6 A | 100 A | 6 s | 12 mOhms | 40 mOhms | - | -40°C ~ 85°C | - | - | - | User Defined | 1.240" L x 0.522" W (31.50mm x 13.25mm) | - | 0.043" (1.10mm) | - |
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MF-LR190SPTC RESET FUSE 15V 1.9A STRAP |
7,071 | - |
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Datasheet |
Strap | Multifuse®, MF-LR | Bulk | Obsolete | 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 0.199" W (21.00mm x 5.05mm) | - | 0.039" (1.00mm) | - |
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MF-LR260SPTC RESET FUSE 15V 2.6A STRAP |
3,007 | - |
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Datasheet |
Strap | Multifuse®, MF-LR | Bulk | Obsolete | Polymeric | 15V | 2.6 A | 5.8 A | 100 A | 5 s | 20 mOhms | 83 mOhms | - | -40°C ~ 85°C | - | - | - | User Defined | 0.866" L x 0.199" W (22.00mm x 5.05mm) | - | 0.039" (1.00mm) | - |
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MF-LR600SPTC RESET FUSE 10V 6A STRAP |
7,822 | - |
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Datasheet |
Strap | Multifuse®, MF-LR | Bulk | Obsolete | Polymeric | 10V | 6 A | 11.7 A | 100 A | 5 s | 7 mOhms | 19 mOhms | - | -40°C ~ 85°C | - | - | - | User Defined | 0.984" L x 0.587" W (25.00mm x 14.90mm) | - | 0.039" (1.00mm) | - |
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MXP370BDPTC RESET FUSE 6V 3.7A STRAP |
4,087 | - |
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Datasheet |
Strap | PolySwitch®, MXP | Bag | Obsolete | Polymeric | 6V | 3.7 A | 9 A | 50 A | 5 s | 4 mOhms | 16 mOhms | - | - | - | - | - | User Defined | 0.429" L x 0.122" W (10.90mm x 3.11mm) | - | 0.043" (1.10mm) | - |
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FEMTOSMDC005F-02POLYSWITCH RESET FUSE 0.05A SMD |
2,973 | - |
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Datasheet |
0603 (1608 Metric), Concave | PolySwitch® | Tape & Reel (TR) | Active | Polymeric | 15V | 50 mA | 150 mA | 40 A | 100 ms | 3.8 Ohms | - | - | - | - | - | - | Surface Mount | 0.063" L x 0.032" W (1.60mm x 0.80mm) | - | 0.026" (0.65mm) | - |
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FEMTOSMDC008F-02PTC RESET FUSE 15V 50MA 0603 |
8,605 | - |
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Datasheet |
0603 (1608 Metric), Concave | PolySwitch®, femtoSMD | Tape & Reel (TR) | Active | Polymeric | 15V | 50 mA | 150 mA | 40 A | 100 ms | 3.8 Ohms | - | - | - | - | - | - | Surface Mount | 0.063" L x 0.032" W (1.60mm x 0.80mm) | - | 0.033" (0.85mm) | - |
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FEMTOSMDC010F-02PTC RESET FUSE 12V 100MA 0603 |
8,105 | - |
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Datasheet |
0603 (1608 Metric), Concave | PolySwitch®, femtoSMD | Tape & Reel (TR) | Active | Polymeric | 12V | 100 mA | 250 mA | 40 A | 100 ms | 1.7 Ohms | 8 Ohms | - | -40°C ~ 85°C | - | - | - | Surface Mount | 0.063" L x 0.032" W (1.60mm x 0.80mm) | - | 0.033" (0.85mm) | - |
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TRF250-145ST-B-0.5PTC RESET FUSE 60V 145MA RADIAL |
4,709 | - |
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Datasheet |
Radial, Disc | PolySwitch®, TRF250 | Bag | Active | Polymeric | 60V (250V Int) | 145 mA | 290 mA | 3 A | 2.5 s | 3 Ohms | 14 Ohms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.256" L x 0.181" W (6.50mm x 4.60mm) | 0.433" (11.00mm) | - | 0.197" (5.00mm) |
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TRF600-150-RCPTC RESET FUSE 250V 150MA RADIAL |
5,231 | - |
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Datasheet |
Radial, Disc | PolySwitch®, TRF600 | Bag | Active | Polymeric | 250V (600V Int) | 150 mA | 300 mA | 40 A | 3 s | 9 Ohms | 22 Ohms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.354" L x 0.181" W (9.00mm x 4.60mm) | 0.492" (12.50mm) | - | 0.197" (5.00mm) |
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B59980C0160A070PTC RESET FUSE 54V RADIAL DISC |
2,029 | - |
|
Datasheet |
Radial, Disc | B59980 | Bulk | Obsolete | Ceramic | 54V | - | - | 1 A | - | 16.5 Ohms | 25 Ohms | - | -40°C ~ 125°C | - | - | - | Through Hole | 0.256" Dia x 0.138" T (6.50mm x 3.50mm) | 0.394" (10.00mm) | - | 0.197" (5.00mm) |
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1206L110/12WRPTC RESET FUSE 12V 1.1A 1206 |
8,451 | - |
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Datasheet |
1206 (3216 Metric), Concave | POLY-FUSE®, 1206L | Tape & Reel (TR) | Active | Polymeric | 12V | 1.1 A | 2.2 A | 100 A | 100 ms | 40 mOhms | 210 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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1812L750SLPRPTC RESET FUSE 6V 7.5A 1812 |
2,169 | - |
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Datasheet |
1812 (4532 Metric), Concave | POLY-FUSE®, LoRho | Tape & Reel (TR) | Active | Polymeric | 6V | 7.5 A | 15 A | 50 A | 2 s | 1 mOhms | 6 mOhms | - | -40°C ~ 85°C | - | - | - | Surface Mount | 0.179" L x 0.128" W (4.55mm x 3.24mm) | - | 0.028" (0.70mm) | - |
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YQD100N150PTC RESET FUSE 265V RADIAL DISC |
7,491 | - |
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Datasheet |
Radial, Disc | YQ | Bulk | Active | Ceramic | 265V | - | - | - | - | - | - | - | 0°C ~ 60°C | - | - | - | Through Hole | 0.256" Dia x 0.197" T (6.50mm x 5.00mm) | - | - | 0.201" (5.10mm) |
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YQZ120N120PTC RESET FUSE 18V RADIAL DISC |
4,951 | - |
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Datasheet |
Radial, Disc | YQ | Bulk | Active | Ceramic | 18V | - | - | - | - | - | - | - | 0°C ~ 60°C | - | - | - | Through Hole | - | - | - | - |

