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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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TRF250-145-RA-B-0.5PTC RESET FUSE 60V 145MA RADIAL |
9,499 | - |
|
Datasheet |
Radial, Disc | PolySwitch®, TRF250 | Bag | Active | Polymeric | 60V (250V Int) | 145 mA | 290 mA | 3 A | 2.5 s | 3 Ohms | 12 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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MF-RHT400-0PTC RESET FUSE 16V 4A RADIAL |
2,500 | - |
|
Datasheet |
Radial, Disc | Multifuse®, MF-RHT | Bag | Active | Polymeric | 16V | 4 A | 7.5 A | 100 A | 5 s | 24 mOhms | 60 mOhms | - | -40°C ~ 125°C | Automotive | AEC-Q200 | - | Through Hole | 0.394" L x 0.118" W (10.00mm x 3.00mm) | 0.591" (15.00mm) | - | 0.201" (5.10mm) |
|
MF-RHT300-0PTC RESET FUSE 16V 3A RADIAL |
2,195 | - |
|
Datasheet |
Radial, Disc | Multifuse®, MF-RHT | Bag | Active | Polymeric | 16V | 3 A | 6 A | 100 A | 5 s | 33 mOhms | 79 mOhms | - | -40°C ~ 125°C | Automotive | AEC-Q200 | - | Through Hole | 0.346" L x 0.118" W (8.80mm x 3.00mm) | 0.543" (13.80mm) | - | 0.201" (5.10mm) |
|
RGEF900-2PTC RESET FUSE 16V 9A RADIAL |
1,996 | - |
|
Datasheet |
Radial, Disc | PolySwitch®, RGEF | Tape & Reel (TR) | Active | Polymeric | 16V | 9 A | 15.3 A | 100 A | 5.5 s | 4.7 mOhms | 13.5 mOhms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.532" L x 0.100" W (13.50mm x 2.50mm) | 0.854" (21.70mm) | - | 0.199" (5.05mm) |
|
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RHEF650-2PTC RESET FUSE 16V 6.5A RADIAL |
1,480 | - |
|
Datasheet |
Radial, Disc | PolySwitch®, RHEF | Tape & Reel (TR) | Active | Polymeric | 16V | 6.5 A | 12 A | 100 A | 5.5 s | 11 mOhms | 26 mOhms | - | -40°C ~ 125°C | - | - | - | Through Hole | 0.500" L x 0.118" W (12.70mm x 3.00mm) | 0.874" (22.20mm) | - | 0.199" (5.05mm) |
|
MF-NSML175/12-2PTC RESET FUSE 12V 1.75A 1206 |
3,953 | - |
|
Datasheet |
1206 (3216 Metric), Concave | Multifuse®, MF-NSML/X | Tape & Reel (TR) | Active | Polymeric | 12V | 1.75 A | 3.5 A | 50 A | 5 s | 6 mOhms | 50 mOhms | - | -40°C ~ 85°C | - | - | - | Surface Mount | 0.128" L x 0.063" W (3.25mm x 1.60mm) | - | 0.028" (0.70mm) | - |
|
MF-RG1100-0PTC RESET FUSE 16V 11A RADIAL |
2,993 | - |
|
Datasheet |
Radial, Disc | Multifuse®, MF-RG | Bulk | Active | Polymeric | 16V | 11 A | 18.7 A | 100 A | 15.2 s | 3 mOhms | 10 mOhms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.689" L x 0.118" W (17.50mm x 3.00mm) | 0.988" (25.10mm) | - | 0.201" (5.10mm) |
|
250R120-RCZRPTC RESET FUSE 60V 120MA RADIAL |
5,407 | - |
|
Datasheet |
Radial, Disc | POLY-FUSE®, 250R | Cut Tape (CT) | Active | Polymeric | 60V (250V Int) | 120 mA | 240 mA | 3 A | 3 s | 5.4 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) | - | 0.201" (5.10mm) |
|
MF-RM040/240-0PTC RESET FUSE 240V 400MA RADIAL |
2,840 | - |
|
Datasheet |
Radial, Disc | Multifuse®, MF-RM | Bulk | Active | Polymeric | 240V (265V Int) | 400 mA | 900 mA | 5.5 A | 24 s | 600 mOhms | 1.9 Ohms | - | -20°C ~ 85°C | - | - | - | Through Hole | 0.453" L x 0.150" W (11.50mm x 3.80mm) | 0.823" (20.90mm) | - | 0.114" (2.90mm) |
|
MF-RHT550-0PTC RESET FUSE 16V 5.5A RADIAL |
2,715 | - |
|
Datasheet |
Radial, Disc | Multifuse®, MF-RHT | Bag | Active | Polymeric | 16V | 5.5 A | 10 A | 100 A | 6 s | 15 mOhms | 37 mOhms | - | -40°C ~ 125°C | Automotive | AEC-Q200 | - | Through Hole | 0.441" L x 0.118" W (11.20mm x 3.00mm) | 0.744" (18.90mm) | - | 0.201" (5.10mm) |
|
2920L600/12MR-APTC RESET FUSE 12V 6A 2920 |
2,367 | - |
|
Datasheet |
2920 (7351 Metric), Concave | POLY-FUSE®, 2920L | Tape & Reel (TR) | Active | Polymeric | 12V | 6 A | 12 A | 50 A | 2 s | 4 mOhms | 20 mOhms | - | -40°C ~ 85°C | - | - | - | Surface Mount | 0.290" L x 0.202" W (7.36mm x 5.12mm) | - | 0.063" (1.60mm) | - |
|
MF-RG650-0PTC RESET FUSE 16V 6.5A RADIAL |
2,850 | - |
|
Datasheet |
Radial, Disc | Multifuse®, MF-RG | Bag | Active | Polymeric | 16V | 6.5 A | 11.1 A | 100 A | 3.5 s | 8.8 mOhms | 24 mOhms | - | -40°C ~ 85°C | Automotive | AEC-Q200 | - | Through Hole | 0.441" L x 0.118" W (11.20mm x 3.00mm) | 0.776" (19.70mm) | - | 0.201" (5.10mm) |
|
|
AHRF600-2PTC RESET FUSE 16V 6A RADIAL |
1,998 | - |
|
Datasheet |
Radial, Disc | PolySwitch®, AHRF | Tape & Reel (TR) | Active | Polymeric | 16V | 6 A | 12 A | 100 A | 6.5 s | 10 mOhms | 32 mOhms | - | -40°C ~ 125°C | Automotive | AEC-Q200 | - | Through Hole | 0.441" L x 0.118" W (11.20mm x 3.00mm) | 0.827" (21.00mm) | - | 0.200" (5.08mm) |
|
|
MF-RHT650-0PTC RESET FUSE 16V 6.5A RADIAL |
2,665 | - |
|
Datasheet |
Radial, Disc | Multifuse®, MF-RHT | Bulk | Active | Polymeric | 16V | 6.5 A | 12 A | 100 A | 5.5 s | 11 mOhms | 26 mOhms | - | -40°C ~ 125°C | Automotive | AEC-Q200 | - | Through Hole | 0.500" L x 0.118" W (12.70mm x 3.00mm) | 0.874" (22.20mm) | - | 0.114" (2.90mm) |
|
MICROASMDCH150F-2PPTC-MINI-PSW |
1,215 | - |
|
Datasheet |
1210 (3225 Metric), Concave | PolySwitch®, microASMD | Tape & Reel (TR) | Active | Polymeric | 12V | 1.5 A | 4.5 A | 40 A | 1 s | 25 mOhms | 250 mOhms | - | -40°C ~ 85°C | Automotive | AEC-Q200 | - | Surface Mount | 0.127" L x 0.101" W (3.22mm x 2.58mm) | - | 0.055" (1.40mm) | - |
|
|
TRF250-145T-B-0.5PTC RESET FUSE 60V 145MA RADIAL |
1,970 | - |
|
Datasheet |
Radial, Disc | PolySwitch®, TRF250 | Bag | Active | Polymeric | 60V (250V Int) | 145 mA | 290 mA | 3 A | 2.5 s | 5.4 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) |
|
PTCCL05H630HTEPTC RESET FUSE 265V 63MA RADIAL |
1,450 | - |
|
Datasheet |
Radial, Disc | PTCCL - 265V | Tape & Reel (TR) | Active | Ceramic | 265V | 63 mA | 95 mA | 450 mA | - | - | - | 120 Ohms | 0°C ~ 70°C | - | - | - | Through Hole | 0.197" Dia x 0.197" T (5.00mm x 5.00mm) | 0.394" (10.00mm) | - | 0.197" (5.00mm) |
|
LSP550PTC RESET FUSE 16V 5.5A |
9,778 | - |
|
Datasheet |
Strap | PolySwitch®, LSP | Bag | Active | Polymeric | 16V | 5.5 A | 10.2 A | 50 A | 5 s | 8 mOhms | 26 mOhms | 13 mOhms | -40°C ~ 85°C | Automotive | AEC-Q200 | - | User Defined | 0.787" L x 0.402" W (20.00mm x 10.20mm) | - | 0.035" (0.90mm) | - |
|
MF-RG600-0PTC RESET FUSE 16V RADIAL DISC |
4,638 | - |
|
Datasheet |
Radial, Disc | Multifuse®, MF-RG | Bulk | Active | Polymeric | 16V | - | 18.7 A | 100 A | - | 3 mOhms | 10 mOhms | - | -40°C ~ 85°C | - | - | - | Through Hole | 0.421" L x 0.118" W (10.70mm x 3.00mm) | 0.673" (17.10mm) | - | 0.201" (5.10mm) |
|
B59980C0120A051PTC RESET FUSE 80V 85MA RADIAL |
2,712 | - |
|
Datasheet |
Radial, Disc | B59980 | Tape & Reel (TR) | Active | Ceramic | 80V | 85 mA | 170 mA | 1 A | - | - | - | 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) |

