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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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
LVR075S-1PTC RESET FUSE 240V 750MA RADIAL |
9,034 | - |
|
Datasheet |
Radial, Disc | PolySwitch®, LVR | Bulk | Obsolete | Polymeric | 240V (265V Int) | 750 mA | 1.5 A | 7.5 A | 18 s | 316 mOhms | 839 mOhms | - | -20°C ~ 85°C | - | - | - | Through Hole | 0.450" L x 0.189" W (11.43mm x 4.80mm) | 0.921" (23.40mm) | - | 0.200" (5.08mm) |
|
TRF250-055TPTC RESET FUSE 60V 55MA RADIAL |
9,520 | - |
|
Datasheet |
Radial, Disc | PolySwitch®, TRF250 | Bulk | Active | Polymeric | 60V (250V Int) | 55 mA | 170 mA | 3 A | 3.5 s | 15 Ohms | 35 Ohms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.228" Dia x 0.181" T (5.80mm x 4.60mm) | 0.390" (9.90mm) | - | 0.197" (5.00mm) |
|
MXP180PTC RESET FUSE 6V 1.8A STRAP |
2,496 | - |
|
- |
Strap | PolySwitch®, MXP | Bulk | Obsolete | Polymeric | 6V | 1.8 A | 5.2 A | 50 A | 5 s | 7 mOhms | 24 mOhms | - | - | - | - | - | User Defined | - | 0.043" (1.10mm) | - | - |
|
MXP270PTC RESET FUSE 6V 2.7A STRAP |
5,923 | - |
|
- |
Strap | PolySwitch®, MXP | Bulk | Obsolete | Polymeric | 6V | 2.7 A | 6.2 A | 50 A | 2 s | 6 mOhms | 26 mOhms | - | - | - | - | - | User Defined | - | 0.043" (1.10mm) | - | - |
|
MGP500PTC RESET FUSE 6V 5A STRAP |
4,129 | - |
|
- |
Strap | PolySwitch®, MGP | Bulk | Obsolete | Polymeric | 6V | 5 A | 9.2 A | 50 A | 5 s | 2.5 mOhms | 13 mOhms | - | - | - | - | - | User Defined | 0.591" L x 0.122" W (15.00mm x 3.11mm) | 0.037" (0.95mm) | - | - |
|
FEMTOSMDC035F-2PTC RESET FUSE 6V 350MA 0603 |
8,874 | - |
|
Datasheet |
0603 (1608 Metric), Concave | PolySwitch®, femtoSMDC | Tape & Reel (TR) | Discontinued at Digi-Key | Polymeric | 6V | 350 mA | 700 mA | 40 A | 100 ms | 280 mOhms | 1 Ohms | - | - | - | - | - | Surface Mount | 0.063" L x 0.032" W (1.60mm x 0.80mm) | - | 0.037" (0.95mm) | - |
|
MF-NSML380-2PTC RESET FUSE 6V 3.8A 1206 |
5,983 | - |
|
- |
1206 (3216 Metric), Concave | Multifuse®, MF-NSML | Tape & Reel (TR) | Obsolete | Polymeric | 6V | 3.8 A | 8 A | 50 A | 5 s | 1.5 mOhms | 14 mOhms | - | -40°C ~ 85°C | - | - | - | Surface Mount | 0.128" L x 0.063" W (3.25mm x 1.60mm) | - | 0.024" (0.60mm) | - |
|
MF-USML450-2PTC RESET FUSE 6V 4.5A 1210 |
9,295 | - |
|
Datasheet |
1210 (3225 Metric), Concave | Multifuse®, MF-USML | Tape & Reel (TR) | Obsolete | Polymeric | 6V | 4.5 A | 9 A | 50 A | 2 s | 1 mOhms | 15 mOhms | - | -40°C ~ 85°C | - | - | - | Surface Mount | 0.127" L x 0.102" W (3.22mm x 2.58mm) | - | 0.047" (1.20mm) | - |
|
MF-USML500-2PTC RESET FUSE 6V 5A 1210 |
2,528 | - |
|
Datasheet |
1210 (3225 Metric), Concave | Multifuse®, MF-USML | Tape & Reel (TR) | Obsolete | Polymeric | 6V | 5 A | 10 A | 50 A | 2 s | 1 mOhms | 14.5 mOhms | - | -40°C ~ 85°C | - | - | - | Surface Mount | 0.127" L x 0.102" W (3.22mm x 2.58mm) | - | 0.047" (1.20mm) | - |
|
MF-USML200-2PTC RESET FUSE 6V 2A 1210 |
6,755 | - |
|
Datasheet |
1210 (3225 Metric), Concave | Multifuse®, MF-USML | Tape & Reel (TR) | Obsolete | Polymeric | 6V | 2 A | 4 A | 50 A | 3 s | 5 mOhms | 30 mOhms | - | -40°C ~ 85°C | - | - | - | Surface Mount | 0.127" L x 0.102" W (3.22mm x 2.58mm) | - | 0.024" (0.60mm) | - |
|
MF-USML250-2PTC RESET FUSE 6V 2.5A 1210 |
8,190 | - |
|
Datasheet |
1210 (3225 Metric), Concave | Multifuse®, MF-USML | Tape & Reel (TR) | Obsolete | Polymeric | 6V | 2.5 A | 5 A | 50 A | 3.5 s | 4.5 mOhms | 22 mOhms | - | -40°C ~ 85°C | - | - | - | Surface Mount | 0.127" L x 0.102" W (3.22mm x 2.58mm) | - | 0.024" (0.60mm) | - |
|
MF-USML350-2PTC RESET FUSE 6V 3.5A 1210 |
2,685 | - |
|
Datasheet |
1210 (3225 Metric), Concave | Multifuse®, MF-USML | Tape & Reel (TR) | Obsolete | Polymeric | 6V | 3.5 A | 7 A | 50 A | 2 s | 3 mOhms | 18 mOhms | - | -40°C ~ 85°C | - | - | - | Surface Mount | 0.127" L x 0.102" W (3.22mm x 2.58mm) | - | 0.024" (0.60mm) | - |
|
B59673A0100B110PTC RESET FUSE |
2,855 | - |
|
- |
- | - | Bulk | Obsolete | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
|
PTGL04BD102N9N54B0PTC RESET FUSE RADIAL DISC |
4,224 | - |
|
Datasheet |
Radial, Disc | POSISTOR®, PTGL | Bulk | Obsolete | Ceramic | - | - | - | - | - | - | - | 1 kOhms | -10°C ~ 60°C | - | - | - | Through Hole | - | - | - | - |
|
MF-R010-0-A0PTC RESET FUSE 60V 100MA RADIAL |
2,552 | - |
|
Datasheet |
Radial, Disc | Multifuse®, MF-R | Bulk | Active | Polymeric | 60V | 100 mA | 200 mA | 40 A | 4 s | 2.5 Ohms | 7.5 Ohms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.291" Dia x 0.122" T (7.40mm x 3.10mm) | 0.500" (12.70mm) | - | 0.201" (5.10mm) |
|
MF-R400-0-15PTC RESET FUSE 30V 4A RADIAL |
6,088 | - |
|
Datasheet |
Radial, Disc | Multifuse®, MF-R | 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) |
|
MF-R075-2-14-99PTC RESET FUSE 60V 750MA RADIAL |
4,785 | - |
|
Datasheet |
Radial, Disc | Multifuse®, MF-R | Tape & Reel (TR) | Obsolete | 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) |
|
MF-R300-2-14-99PTC RESET FUSE 30V 3A RADIAL |
3,661 | - |
|
Datasheet |
Radial, Disc | Multifuse®, MF-R | Tape & Reel (TR) | Obsolete | 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) |
|
MF-R400-2-14-99PTC RESET FUSE 30V 4A RADIAL |
9,952 | - |
|
Datasheet |
Radial, Disc | Multifuse®, MF-R | Tape & Reel (TR) | Obsolete | 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) |
|
MF-R010-0-A0-99PTC RESET FUSE 60V 100MA RADIAL |
4,777 | - |
|
Datasheet |
Radial, Disc | Multifuse®, MF-R | Bulk | Obsolete | Polymeric | 60V | 100 mA | 200 mA | 40 A | 4 s | 2.5 Ohms | 7.5 Ohms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.291" Dia x 0.122" T (7.40mm x 3.10mm) | 0.500" (12.70mm) | - | 0.201" (5.10mm) |

