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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-SM200-2-99PTC RESET FUSE 15V 2A 2SMD |
9,230 | - |
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Datasheet |
2-SMD | Multifuse®, MF-SM | Tape & Reel (TR) | Obsolete | Polymeric | 15V | 2 A | 4 A | 100 A | 12 s | 45 mOhms | 125 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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MF-SM250-2-99PTC RESET FUSE 15V 2.5A 2SMD |
9,995 | - |
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Datasheet |
2-SMD | Multifuse®, MF-SM | Tape & Reel (TR) | Obsolete | Polymeric | 15V | 2.5 A | 5 A | 100 A | 25 s | 24 mOhms | 85 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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MICROSMD200LR-2PTC RESET FUSE 6V 2A 1210 |
4,287 | - |
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Datasheet |
1210 (3225 Metric), Concave | PolySwitch®, LoRho | Tape & Reel (TR) | Obsolete | Polymeric | 6V | 2 A | 5 A | 50 A | 4 s | 6 mOhms | - | - | - | - | - | - | Surface Mount | 0.127" L x 0.102" W (3.22mm x 2.58mm) | - | 0.039" (1.00mm) | - |
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MICROSMD250LR-A-2PTC RESET FUSE 6V 2.5A 1210 |
5,450 | - |
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Datasheet |
1210 (3225 Metric), Concave | PolySwitch®, LoRho | Tape & Reel (TR) | Obsolete | Polymeric | 6V | 2.5 A | 5.2 A | 50 A | 5 s | 5 mOhms | - | - | - | - | - | - | Surface Mount | 0.127" L x 0.102" W (3.22mm x 2.58mm) | - | 0.039" (1.00mm) | - |
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MICROSMD350LR-2PTC RESET FUSE 6V 3.5A 1206 |
4,388 | - |
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Datasheet |
1210 (3225 Metric) | PolySwitch®, microSMD | Tape & Reel (TR) | Obsolete | Polymeric | 6V | 3.5 A | 9 A | 50 A | 10 s | 2.5 mOhms | - | - | - | - | - | - | Surface Mount | 0.127" L x 0.102" W (3.22mm x 2.58mm) | - | 0.039" (1.00mm) | - |
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MICROSMD350LR-D-2PTC RESET FUSE 6V 3.5A 1206 |
3,592 | - |
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- |
1210 (3225 Metric) | PolySwitch®, microSMD | Tape & Reel (TR) | Obsolete | Polymeric | 6V | 3.5 A | 9 A | 50 A | 10 s | 2.5 mOhms | 11 mOhms | - | -40°C ~ 80°C | - | - | - | Surface Mount | 0.127" L x 0.102" W (3.22mm x 2.58mm) | - | 0.039" (1.00mm) | - |
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MICROSMD380LR-2PTC RESET FUSE 6V 3.8A 1206 |
2,797 | - |
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1210 (3225 Metric) | PolySwitch®, microSMD | Tape & Reel (TR) | Obsolete | Polymeric | 6V | 3.8 A | 9 A | 50 A | 10 s | 2.5 mOhms | 9 mOhms | - | -40°C ~ 80°C | - | - | - | Surface Mount | 0.127" L x 0.102" W (3.22mm x 2.58mm) | - | 0.039" (1.00mm) | - |
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MICROSMD400LR-2PTC RESET FUSE 6V 4A 1206 |
9,209 | - |
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- |
1210 (3225 Metric) | PolySwitch®, microSMD | Tape & Reel (TR) | Obsolete | Polymeric | 6V | 4 A | 9 A | 50 A | 10 s | 2.5 mOhms | 9.9 mOhms | - | -40°C ~ 80°C | - | - | - | Surface Mount | 0.127" L x 0.102" W (3.22mm x 2.58mm) | - | 0.039" (1.00mm) | - |
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MICROSMD450LR-2PTC RESET FUSE 5V 4.5A 1210 |
3,655 | - |
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Datasheet |
1210 (3225 Metric), Concave | PolySwitch®, microSMD | Tape & Reel (TR) | Obsolete | Polymeric | 5V | 4.5 A | 9 A | 50 A | 2 s | 2 mOhms | 8 mOhms | - | -40°C ~ 80°C | - | - | - | Surface Mount | 0.127" L x 0.102" W (3.22mm x 2.58mm) | - | 0.039" (1.00mm) | - |
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MICROSMD550LR-2PTC RESET FUSE 5V 5.5A 1210 |
4,648 | - |
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- |
1210 (3225 Metric), Concave | PolySwitch®, microSMD | Tape & Reel (TR) | Obsolete | Polymeric | 5V | 5.5 A | 11 A | 50 A | 2 s | 2 mOhms | 6.5 mOhms | - | -40°C ~ 80°C | - | - | - | Surface Mount | 0.127" L x 0.102" W (3.22mm x 2.58mm) | - | 0.039" (1.00mm) | - |
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MICROSMD600LR-2PTC RESET FUSE 6V 6A 1210 |
2,275 | - |
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- |
1210 (3225 Metric), Concave | PolySwitch®, microSMD | Tape & Reel (TR) | Obsolete | Polymeric | 6V | 6 A | 12 A | 50 A | 2 s | 2 mOhms | 6.3 mOhms | - | -40°C ~ 80°C | - | - | - | Surface Mount | 0.127" L x 0.102" W (3.22mm x 2.58mm) | - | 0.039" (1.00mm) | - |
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MF-USML600-2PTC RESET FUSE 6V 6A 1210 |
3,433 | - |
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Datasheet |
1210 (3225 Metric), Concave | Multifuse®, MF-USML | Tape & Reel (TR) | Obsolete | Polymeric | 6V | 6 A | 12 A | 50 A | 2 s | 1 mOhms | 14 mOhms | - | -40°C ~ 85°C | - | - | - | Surface Mount | 0.127" L x 0.102" W (3.22mm x 2.58mm) | - | 0.047" (1.20mm) | - |
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MF-USML380/6-2PTC RESET FUSE 6V 3.8A 1210 |
8,339 | - |
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Datasheet |
1210 (3225 Metric), Concave | Multifuse®, MF-USML/X | Tape & Reel (TR) | Active | Polymeric | 6V | 3.8 A | 7.6 A | 50 A | 5 s | 2 mOhms | 20 mOhms | - | -40°C ~ 85°C | - | - | - | Surface Mount | 0.127" L x 0.101" W (3.22mm x 2.58mm) | - | 0.047" (1.20mm) | - |
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MF-USML260/6-2PTC RESET FUSE 6V 2.6A 1210 |
5,397 | - |
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Datasheet |
1210 (3225 Metric), Concave | Multifuse®, MF-USML/X | Tape & Reel (TR) | Active | Polymeric | 6V | 2.6 A | 5.2 A | 50 A | 5 s | 4 mOhms | 30 mOhms | - | -40°C ~ 85°C | - | - | - | Surface Mount | 0.127" L x 0.101" W (3.22mm x 2.58mm) | - | 0.031" (0.80mm) | - |
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MF-USML450/6-2PTC RESET FUSE 6V 4.5A 1210 |
7,967 | - |
|
Datasheet |
1210 (3225 Metric), Concave | Multifuse®, MF-USML/X | Tape & Reel (TR) | Active | Polymeric | 6V | 4.5 A | 9 A | 50 A | 2 s | 2 mOhms | 14 mOhms | - | -40°C ~ 85°C | - | - | - | Surface Mount | 0.127" L x 0.101" W (3.22mm x 2.58mm) | - | 0.047" (1.20mm) | - |
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MF-LSMF330X-22920 RESETTABLE SMD PPTC 3.3A/6V |
5,645 | - |
|
Datasheet |
2920 (7351 Metric), Concave | Multifuse®, MF-LSMF | Tape & Reel (TR) | Active | Polymeric | - | 3.3 A | - | - | - | - | - | - | -40°C ~ 85°C | Automotive | AEC-Q200 | - | Surface Mount | 0.290" L x 0.202" W (7.36mm x 5.12mm) | - | - | - |
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MF-RG1100-AP-14PTC RESETTABLE 11A 16V RADIAL LE |
2,325 | - |
|
Datasheet |
Radial, Disc | Multifuse®, MF-RG | Tape & Box (TB) | Active | Polymeric | 16V | 11 A | 18.7 A | 100 A | 7 s | 3.7 mOhms | 8.9 mOhms | - | -40°C ~ 85°C | Automotive | AEC-Q200 | - | Through Hole | 0.689" L x 0.118" W (17.50mm x 3.00mm) | 1.024" (26.00mm) | - | 0.201" (5.10mm) |
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MF-RG1100-2-14PTC RESETTABLE 11A 16V RADIAL LE |
8,689 | - |
|
Datasheet |
Radial, Disc | Multifuse®, MF-RG | Tape & Reel (TR) | Active | Polymeric | 16V | 11 A | 18.7 A | 100 A | 7 s | 3.7 mOhms | 8.9 mOhms | - | -40°C ~ 85°C | Automotive | AEC-Q200 | - | Through Hole | 0.689" L x 0.118" W (17.50mm x 3.00mm) | 1.024" (26.00mm) | - | 0.201" (5.10mm) |
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RL3006-50-30-25-PTOPTC RESET FUSE 25V RADIAL DISC |
2,473 | - |
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Datasheet |
Radial, Disc | PTO | Bulk | Obsolete | Ceramic | 25V | - | - | - | 35 s | - | - | 50 Ohms | - | - | - | - | Through Hole | 0.350" Dia x 0.150" T (8.90mm x 3.80mm) | 0.350" (8.89mm) | - | 0.250" (6.35mm) |
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YPBJ5.60TPTC RESET FUSE 80V 130MA RADIAL |
8,297 | - |
|
Datasheet |
Radial, Disc | YP | Tape & Reel (TR) | Obsolete | Ceramic | 80V | 130 mA | 265 mA | 4.3 A | - | - | - | 5.6 Ohms | 0°C ~ 60°C | - | - | - | Through Hole | 0.433" Dia x 0.138" T (11.00mm x 3.50mm) | 0.492" (12.50mm) | - | 0.200" (5.08mm) |

