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
MF-RX135-AP

MF-RX135-AP

PTC RESET FUSE 60V 1.35A RADIAL

Bourns Inc.

9,500 -
RFQ
MF-RX135-AP

Datasheet

Radial, Disc Multifuse®, MF-RX Tape & Box (TB) 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-AP-99

MF-RX135-AP-99

PTC RESET FUSE 60V 1.35A RADIAL

Bourns Inc.

2,890 -
RFQ
MF-RX135-AP-99

Datasheet

Radial, Disc Multifuse®, MF-RX Tape & Box (TB) 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-AP

MF-RX160-AP

PTC RESET FUSE 60V 1.6A RADIAL

Bourns Inc.

7,949 -
RFQ
MF-RX160-AP

Datasheet

Radial, Disc Multifuse®, MF-RX Tape & Box (TB) 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-AP-99

MF-RX160-AP-99

PTC RESET FUSE 60V 1.6A RADIAL

Bourns Inc.

5,076 -
RFQ
MF-RX160-AP-99

Datasheet

Radial, Disc Multifuse®, MF-RX Tape & Box (TB) 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-RX185-AP

MF-RX185-AP

PTC RESET FUSE 60V 1.85A RADIAL

Bourns Inc.

7,534 -
RFQ
MF-RX185-AP

Datasheet

Radial, Disc Multifuse®, MF-RX Tape & Box (TB) Obsolete Polymeric 60V 1.85 A 3.7 A 40 A 12.6 s 80 mOhms 190 mOhms - -40°C ~ 85°C - - - Through Hole 0.701" L x 0.122" W (17.80mm x 3.10mm) 0.902" (22.90mm) - 0.201" (5.10mm)
MF-RX185-AP-99

MF-RX185-AP-99

PTC RESET FUSE 60V 1.85A RADIAL

Bourns Inc.

4,442 -
RFQ
MF-RX185-AP-99

Datasheet

Radial, Disc Multifuse®, MF-RX Tape & Box (TB) Obsolete Polymeric 60V 1.85 A 3.7 A 40 A 12.6 s 80 mOhms 190 mOhms - -40°C ~ 85°C - - - Through Hole 0.701" L x 0.122" W (17.80mm x 3.10mm) 0.902" (22.90mm) - 0.201" (5.10mm)
MF-RX250-AP

MF-RX250-AP

PTC RESET FUSE 60V 2.5A RADIAL

Bourns Inc.

5,610 -
RFQ
MF-RX250-AP

Datasheet

Radial, Disc Multifuse®, MF-RX Tape & Box (TB) 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-AP-99

MF-RX250-AP-99

PTC RESET FUSE 60V 2.5A RADIAL

Bourns Inc.

4,722 -
RFQ
MF-RX250-AP-99

Datasheet

Radial, Disc Multifuse®, MF-RX Tape & Box (TB) 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-AP

MF-RX300-AP

PTC RESET FUSE 60V 3A RADIAL

Bourns Inc.

4,783 -
RFQ
MF-RX300-AP

Datasheet

Radial, Disc Multifuse®, MF-RX Tape & Box (TB) 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-AP-99

MF-RX300-AP-99

PTC RESET FUSE 60V 3A RADIAL

Bourns Inc.

7,749 -
RFQ
MF-RX300-AP-99

Datasheet

Radial, Disc Multifuse®, MF-RX Tape & Box (TB) 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)
CMF-SD35-10-2

CMF-SD35-10-2

PTC RESET FUSE 230V 100MA 4SMD

Bourns Inc.

6,395 -
RFQ
CMF-SD35-10-2

Datasheet

4-SMD Cube CMF-SD Tape & Reel (TR) Obsolete Ceramic 230V (600V Int) 100 mA 200 mA 3 A 200 ms - - 35 Ohms - - - - Surface Mount 0.402" L x 0.354" W (10.20mm x 9.00mm) - 0.425" (10.80mm) -
CMF-SD35-2

CMF-SD35-2

PTC RESET FUSE 230V 100MA 4SMD

Bourns Inc.

6,729 -
RFQ
CMF-SD35-2

Datasheet

4-SMD Cube CMF-SD Tape & Reel (TR) Obsolete Ceramic 230V (600V Int) 100 mA 200 mA 3 A 200 ms - - 35 Ohms - - - - Surface Mount 0.402" L x 0.354" W (10.20mm x 9.00mm) - 0.425" (10.80mm) -
CMF-SD35A-10-2

CMF-SD35A-10-2

PTC RESET FUSE 230V 100MA 4SMD

Bourns Inc.

4,462 -
RFQ
CMF-SD35A-10-2

Datasheet

4-SMD Cube CMF-SD Tape & Reel (TR) Obsolete Ceramic 230V (600V Int) 100 mA 200 mA 2.5 A 200 ms - - 35 Ohms - - - - Surface Mount 0.319" L x 0.282" W (8.10mm x 7.15mm) - 0.335" (8.50mm) -
CMF-SD50-2

CMF-SD50-2

PTC RESET FUSE 230V 90MA 4SMD

Bourns Inc.

8,123 -
RFQ
CMF-SD50-2

Datasheet

4-SMD Cube CMF-SD Tape & Reel (TR) Obsolete Ceramic 230V (600V Int) 90 mA 190 mA 3 A 100 ms - - 50 Ohms - - - - Surface Mount 0.402" L x 0.354" W (10.20mm x 9.00mm) - 0.425" (10.80mm) -
MF-R010-2-99

MF-R010-2-99

PTC RESET FUSE 60V 100MA RADIAL

Bourns Inc.

9,229 -
RFQ
MF-R010-2-99

Datasheet

Radial, Disc Multifuse®, MF-R Tape & Reel (TR) 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)
MF-R015/600-2

MF-R015/600-2

PTC RESET FUSE 250V 150MA RADIAL

Bourns Inc.

3,777 -
RFQ
MF-R015/600-2

Datasheet

Radial, Box Multifuse®, MF-R/600 Tape & Reel (TR) Obsolete Polymeric 250V (600V Int) 150 mA 300 mA 3 A 5 s 6 Ohms 22 Ohms - -40°C ~ 85°C - - - Through Hole 0.531" L x 0.236" W (13.50mm x 6.00mm) 0.496" (12.60mm) - 0.197" (5.00mm)
MF-R015/600-A-2

MF-R015/600-A-2

PTC RESET FUSE 250V 150MA RADIAL

Bourns Inc.

5,198 -
RFQ
MF-R015/600-A-2

Datasheet

Radial, Box Multifuse®, MF-R/600 Tape & Reel (TR) Obsolete Polymeric 250V (600V Int) 150 mA 300 mA 3 A 5 s 7 Ohms 20 Ohms - -40°C ~ 85°C - - - Through Hole 0.531" L x 0.236" W (13.50mm x 6.00mm) 0.496" (12.60mm) - 0.197" (5.00mm)
MF-R015/600-B-2

MF-R015/600-B-2

PTC RESET FUSE 250V 150MA RADIAL

Bourns Inc.

4,661 -
RFQ
MF-R015/600-B-2

Datasheet

Radial, Box Multifuse®, MF-R/600 Tape & Reel (TR) Obsolete Polymeric 250V (600V Int) 150 mA 300 mA 3 A 5 s 9 Ohms 22 Ohms - -40°C ~ 85°C - - - Through Hole 0.531" L x 0.236" W (13.50mm x 6.00mm) 0.496" (12.60mm) - 0.197" (5.00mm)
MF-R015/600-F-2

MF-R015/600-F-2

PTC RESET FUSE 250V 150MA RADIAL

Bourns Inc.

5,710 -
RFQ
MF-R015/600-F-2

Datasheet

Radial, Box Multifuse®, MF-R/600 Tape & Reel (TR) Obsolete Polymeric 250V (600V Int) 150 mA 300 mA 3 A 5 s 7 Ohms 22 Ohms - -40°C ~ 85°C - - - Through Hole 0.531" L x 0.236" W (13.50mm x 6.00mm) 0.496" (12.60mm) - 0.197" (5.00mm)
MF-R016/600-2

MF-R016/600-2

PTC RESET FUSE 250V 160MA RADIAL

Bourns Inc.

4,568 -
RFQ
MF-R016/600-2

Datasheet

Radial, Box Multifuse®, MF-R/600 Tape & Reel (TR) Obsolete Polymeric 250V (600V Int) 160 mA 320 mA 3 A 7 s 4 Ohms 18 Ohms - -40°C ~ 85°C - - - Through Hole 0.630" L x 0.236" W (16.00mm x 6.00mm) 0.496" (12.60mm) - 0.197" (5.00mm)
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