PTC Resettable Fuses

Manufacturer 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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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
TRF250-145-RA-B-0.5

TRF250-145-RA-B-0.5

PTC RESET FUSE 60V 145MA RADIAL

Littelfuse Inc.

9,499 -
RFQ
TRF250-145-RA-B-0.5

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)
MF-RHT400-0

MF-RHT400-0

PTC RESET FUSE 16V 4A RADIAL

Bourns Inc.

2,500 -
RFQ
MF-RHT400-0

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-RHT300-0

MF-RHT300-0

PTC RESET FUSE 16V 3A RADIAL

Bourns Inc.

2,195 -
RFQ
MF-RHT300-0

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)
RGEF900-2

RGEF900-2

PTC RESET FUSE 16V 9A RADIAL

Littelfuse Inc.

1,996 -
RFQ
RGEF900-2

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)
RHEF650-2

RHEF650-2

PTC RESET FUSE 16V 6.5A RADIAL

Littelfuse Inc.

1,480 -
RFQ
RHEF650-2

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-NSML175/12-2

MF-NSML175/12-2

PTC RESET FUSE 12V 1.75A 1206

Bourns Inc.

3,953 -
RFQ
MF-NSML175/12-2

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-RG1100-0

MF-RG1100-0

PTC RESET FUSE 16V 11A RADIAL

Bourns Inc.

2,993 -
RFQ
MF-RG1100-0

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-RCZR

250R120-RCZR

PTC RESET FUSE 60V 120MA RADIAL

Littelfuse Inc.

5,407 -
RFQ
250R120-RCZR

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-RM040/240-0

MF-RM040/240-0

PTC RESET FUSE 240V 400MA RADIAL

Bourns Inc.

2,840 -
RFQ
MF-RM040/240-0

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-RHT550-0

MF-RHT550-0

PTC RESET FUSE 16V 5.5A RADIAL

Bourns Inc.

2,715 -
RFQ
MF-RHT550-0

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-A

2920L600/12MR-A

PTC RESET FUSE 12V 6A 2920

Littelfuse Inc.

2,367 -
RFQ
2920L600/12MR-A

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-RG650-0

MF-RG650-0

PTC RESET FUSE 16V 6.5A RADIAL

Bourns Inc.

2,850 -
RFQ
MF-RG650-0

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)
AHRF600-2

AHRF600-2

PTC RESET FUSE 16V 6A RADIAL

Littelfuse Inc.

1,998 -
RFQ
AHRF600-2

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-RHT650-0

MF-RHT650-0

PTC RESET FUSE 16V 6.5A RADIAL

Bourns Inc.

2,665 -
RFQ
MF-RHT650-0

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-2

MICROASMDCH150F-2

PPTC-MINI-PSW

Littelfuse Inc.

1,215 -
RFQ
MICROASMDCH150F-2

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-0.5

TRF250-145T-B-0.5

PTC RESET FUSE 60V 145MA RADIAL

Littelfuse Inc.

1,970 -
RFQ
TRF250-145T-B-0.5

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)
PTCCL05H630HTE

PTCCL05H630HTE

PTC RESET FUSE 265V 63MA RADIAL

Vishay Beyschlag/Draloric/BC Components

1,450 -
RFQ
PTCCL05H630HTE

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)
LSP550

LSP550

PTC RESET FUSE 16V 5.5A

Littelfuse Inc.

9,778 -
RFQ
LSP550

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-RG600-0

MF-RG600-0

PTC RESET FUSE 16V RADIAL DISC

Bourns Inc.

4,638 -
RFQ
MF-RG600-0

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)
B59980C0120A051

B59980C0120A051

PTC RESET FUSE 80V 85MA RADIAL

EPCOS - TDK Electronics

2,712 -
RFQ
B59980C0120A051

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)
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