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-R700-2-99

MF-R700-2-99

PTC RESET FUSE 30V 7A RADIAL

Bourns Inc.

4,771 -
RFQ
MF-R700-2-99

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-R900-2-99

MF-R900-2-99

PTC RESET FUSE 30V 9A RADIAL

Bourns Inc.

4,841 -
RFQ
MF-R900-2-99

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-B5-2

MF-RX014/250U-B5-2

PTC RESET FUSE 60V 145MA RADIAL

Bourns Inc.

7,889 -
RFQ
MF-RX014/250U-B5-2

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-RX110-2

MF-RX110-2

PTC RESET FUSE 60V 1.1A RADIAL

Bourns Inc.

6,925 -
RFQ
MF-RX110-2

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-RX110-2-99

MF-RX110-2-99

PTC RESET FUSE 60V 1.1A RADIAL

Bourns Inc.

8,960 -
RFQ
MF-RX110-2-99

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-RX135-2

MF-RX135-2

PTC RESET FUSE 60V 1.35A RADIAL

Bourns Inc.

6,023 -
RFQ
MF-RX135-2

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-RX135-2-99

MF-RX135-2-99

PTC RESET FUSE 60V 1.35A RADIAL

Bourns Inc.

9,238 -
RFQ
MF-RX135-2-99

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-RX160-2

MF-RX160-2

PTC RESET FUSE 60V 1.6A RADIAL

Bourns Inc.

2,120 -
RFQ
MF-RX160-2

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-RX160-2-99

MF-RX160-2-99

PTC RESET FUSE 60V 1.6A RADIAL

Bourns Inc.

4,887 -
RFQ
MF-RX160-2-99

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-RX250-2

MF-RX250-2

PTC RESET FUSE 60V 2.5A RADIAL

Bourns Inc.

8,074 -
RFQ
MF-RX250-2

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-RX250-2-99

MF-RX250-2-99

PTC RESET FUSE 60V 2.5A RADIAL

Bourns Inc.

7,710 -
RFQ
MF-RX250-2-99

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-RX300-2

MF-RX300-2

PTC RESET FUSE 60V 3A RADIAL

Bourns Inc.

4,327 -
RFQ
MF-RX300-2

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-RX300-2-99

MF-RX300-2-99

PTC RESET FUSE 60V 3A RADIAL

Bourns Inc.

4,506 -
RFQ
MF-RX300-2-99

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-RX375/72-2-99

MF-RX375/72-2-99

PTC RESET FUSE 72V 3.75A RADIAL

Bourns Inc.

7,549 -
RFQ
MF-RX375/72-2-99

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-RX375-2

MF-RX375-2

PTC RESET FUSE 60V 3.75A RADIAL

Bourns Inc.

6,229 -
RFQ
MF-RX375-2

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-RX375-2-99

MF-RX375-2-99

PTC RESET FUSE 60V 3.75A RADIAL

Bourns Inc.

6,496 -
RFQ
MF-RX375-2-99

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-SM050-2-006

MF-SM050-2-006

PTC RESET FUSE 60V 500MA 2SMD

Bourns Inc.

3,796 -
RFQ
MF-SM050-2-006

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-SM075-2-006

MF-SM075-2-006

PTC RESET FUSE 30V 750MA 2SMD

Bourns Inc.

5,490 -
RFQ
MF-SM075-2-006

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-SM150-2-006

MF-SM150-2-006

PTC RESET FUSE 15V 1.5A 2SMD

Bourns Inc.

6,066 -
RFQ
MF-SM150-2-006

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-SM250-2-006

MF-SM250-2-006

PTC RESET FUSE 15V 2.5A 2SMD

Bourns Inc.

3,857 -
RFQ
MF-SM250-2-006

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) -
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