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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-R700-2-99PTC RESET FUSE 30V 7A RADIAL |
4,771 | - |
|
Datasheet |
Radial, Disc | Multifuse®, MF-R | Tape & Reel (TR) | Obsolete | Polymeric | 30V | 7 A | 14 A | 40 A | 17.5 s | 5 mOhms | 30 mOhms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.870" L x 0.118" W (22.10mm x 3.00mm) | 1.173" (29.80mm) | - | 0.402" (10.20mm) |
|
MF-R900-2-99PTC RESET FUSE 30V 9A RADIAL |
4,841 | - |
|
Datasheet |
Radial, Disc | Multifuse®, MF-R | Tape & Reel (TR) | Obsolete | Polymeric | 30V | 9 A | 18 A | 40 A | 20 s | 5 mOhms | 20 mOhms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.953" L x 0.118" W (24.20mm x 3.00mm) | 1.295" (32.90mm) | - | 0.402" (10.20mm) |
|
MF-RX014/250U-B5-2PTC RESET FUSE 60V 145MA RADIAL |
7,889 | - |
|
Datasheet |
Radial, Disc | Multifuse®, MF-RX/250 | Tape & Reel (TR) | Active | Polymeric | 60V (250V Int) | 145 mA | - | 3 A | - | 4.5 Ohms | 14 Ohms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.236" L x 0.150" W (6.00mm x 3.80mm) | 0.394" (10.00mm) | - | 0.201" (5.10mm) |
|
MF-RX110-2PTC RESET FUSE 60V 1.1A RADIAL |
6,925 | - |
|
Datasheet |
Radial, Disc | Multifuse®, MF-RX | Tape & Reel (TR) | Obsolete | Polymeric | 60V | 1.1 A | 2.2 A | 40 A | 8.2 s | 150 mOhms | 380 mOhms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.512" Dia x 0.122" T (13.00mm x 3.10mm) | 0.709" (18.00mm) | - | 0.201" (5.10mm) |
|
MF-RX110-2-99PTC RESET FUSE 60V 1.1A RADIAL |
8,960 | - |
|
Datasheet |
Radial, Disc | Multifuse®, MF-RX | Tape & Reel (TR) | Obsolete | Polymeric | 60V | 1.1 A | 2.2 A | 40 A | 8.2 s | 150 mOhms | 380 mOhms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.512" Dia x 0.122" T (13.00mm x 3.10mm) | 0.709" (18.00mm) | - | 0.201" (5.10mm) |
|
MF-RX135-2PTC RESET FUSE 60V 1.35A RADIAL |
6,023 | - |
|
Datasheet |
Radial, Disc | Multifuse®, MF-RX | Tape & Reel (TR) | Obsolete | Polymeric | 60V | 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) |
|
MF-RX135-2-99PTC RESET FUSE 60V 1.35A RADIAL |
9,238 | - |
|
Datasheet |
Radial, Disc | Multifuse®, MF-RX | Tape & Reel (TR) | Obsolete | Polymeric | 60V | 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) |
|
MF-RX160-2PTC RESET FUSE 60V 1.6A RADIAL |
2,120 | - |
|
Datasheet |
Radial, Disc | Multifuse®, MF-RX | Tape & Reel (TR) | Obsolete | Polymeric | 60V | 1.6 A | 3.2 A | 40 A | 11.4 s | 90 mOhms | 220 mOhms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.642" L x 0.122" W (16.30mm x 3.10mm) | 0.839" (21.30mm) | - | 0.201" (5.10mm) |
|
MF-RX160-2-99PTC RESET FUSE 60V 1.6A RADIAL |
4,887 | - |
|
Datasheet |
Radial, Disc | Multifuse®, MF-RX | Tape & Reel (TR) | Obsolete | Polymeric | 60V | 1.6 A | 3.2 A | 40 A | 11.4 s | 90 mOhms | 220 mOhms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.642" L x 0.122" W (16.30mm x 3.10mm) | 0.839" (21.30mm) | - | 0.201" (5.10mm) |
|
MF-RX250-2PTC RESET FUSE 60V 2.5A RADIAL |
8,074 | - |
|
Datasheet |
Radial, Disc | Multifuse®, MF-RX | Tape & Reel (TR) | Obsolete | Polymeric | 60V | 2.5 A | 5 A | 40 A | 15.6 s | 50 mOhms | 130 mOhms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.839" L x 0.122" W (21.30mm x 3.10mm) | 1.039" (26.40mm) | - | 0.402" (10.20mm) |
|
MF-RX250-2-99PTC RESET FUSE 60V 2.5A RADIAL |
7,710 | - |
|
Datasheet |
Radial, Disc | Multifuse®, MF-RX | Tape & Reel (TR) | Obsolete | Polymeric | 60V | 2.5 A | 5 A | 40 A | 15.6 s | 50 mOhms | 130 mOhms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.839" L x 0.122" W (21.30mm x 3.10mm) | 1.039" (26.40mm) | - | 0.402" (10.20mm) |
|
MF-RX300-2PTC RESET FUSE 60V 3A RADIAL |
4,327 | - |
|
Datasheet |
Radial, Disc | Multifuse®, MF-RX | Tape & Reel (TR) | Obsolete | Polymeric | 60V | 3 A | 6 A | 40 A | 19.8 s | 40 mOhms | 100 mOhms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.980" L x 0.122" W (24.90mm x 3.10mm) | 1.181" (30.00mm) | - | 0.402" (10.20mm) |
|
MF-RX300-2-99PTC RESET FUSE 60V 3A RADIAL |
4,506 | - |
|
Datasheet |
Radial, Disc | Multifuse®, MF-RX | Tape & Reel (TR) | Obsolete | Polymeric | 60V | 3 A | 6 A | 40 A | 19.8 s | 40 mOhms | 100 mOhms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.980" L x 0.122" W (24.90mm x 3.10mm) | 1.181" (30.00mm) | - | 0.402" (10.20mm) |
|
|
MF-RX375/72-2-99PTC RESET FUSE 72V 3.75A RADIAL |
7,549 | - |
|
Datasheet |
Radial, Disc | Multifuse®, MF-RX/72 | Tape & Reel (TR) | Obsolete | Polymeric | 72V | 3.75 A | 7.5 A | 40 A | 24 s | 30 mOhms | 80 mOhms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.926" L x 0.122" W (23.51mm x 3.10mm) | 1.161" (29.50mm) | - | 0.402" (10.20mm) |
|
MF-RX375-2PTC RESET FUSE 60V 3.75A RADIAL |
6,229 | - |
|
Datasheet |
Radial, Disc | Multifuse®, MF-RX | Tape & Reel (TR) | Obsolete | Polymeric | 60V | 3.75 A | 7.5 A | 40 A | 24 s | 30 mOhms | 80 mOhms | - | -40°C ~ 85°C | - | - | - | Through Hole | 1.118" L x 0.122" W (28.40mm x 3.10mm) | 1.319" (33.50mm) | - | 0.402" (10.20mm) |
|
MF-RX375-2-99PTC RESET FUSE 60V 3.75A RADIAL |
6,496 | - |
|
Datasheet |
Radial, Disc | Multifuse®, MF-RX | Tape & Reel (TR) | Obsolete | Polymeric | 60V | 3.75 A | 7.5 A | 40 A | 24 s | 30 mOhms | 80 mOhms | - | -40°C ~ 85°C | - | - | - | Through Hole | 1.118" L x 0.122" W (28.40mm x 3.10mm) | 1.319" (33.50mm) | - | 0.402" (10.20mm) |
|
MF-SM050-2-006PTC RESET FUSE 60V 500MA 2SMD |
3,796 | - |
|
Datasheet |
2-SMD | Multifuse®, MF-SM | Tape & Reel (TR) | Active | Polymeric | 60V | 500 mA | 1 A | 40 A | 4 s | 350 mOhms | 1.4 Ohms | - | -40°C ~ 85°C | Automotive | AEC-Q200 | - | Surface Mount | 0.287" L x 0.214" W (7.31mm x 5.44mm) | - | 0.125" (3.18mm) | - |
|
MF-SM075-2-006PTC RESET FUSE 30V 750MA 2SMD |
5,490 | - |
|
Datasheet |
2-SMD | Multifuse®, MF-SM | Tape & Reel (TR) | Active | Polymeric | 30V | 750 mA | 1.5 A | 80 A | 300 ms | 230 mOhms | 1 Ohms | - | -40°C ~ 85°C | Automotive | AEC-Q200 | - | Surface Mount | 0.287" L x 0.214" W (7.31mm x 5.44mm) | - | 0.125" (3.18mm) | - |
|
|
MF-SM150-2-006PTC RESET FUSE 15V 1.5A 2SMD |
6,066 | - |
|
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) | - |
|
|
MF-SM250-2-006PTC RESET FUSE 15V 2.5A 2SMD |
3,857 | - |
|
Datasheet |
2-SMD | Multifuse®, MF-SM | Tape & Reel (TR) | Active | 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) | - |

