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
TRF250-120T-R2-B-0.5-2

TRF250-120T-R2-B-0.5-2

PTC RESET FUSE 60V 120MA RADIAL

Littelfuse Inc.

4,425 -
RFQ
TRF250-120T-R2-B-0.5-2

Datasheet

Radial, Disc PolySwitch®, TRF250 Tape & Reel (TR) Active Polymeric 60V (250V Int) 120 mA 240 mA 3 A 750 ms 8 Ohms 16 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)
YQS5940PTH

YQS5940PTH

PTC RESET FUSE HEATERS +/-40%

Amphenol Advanced Sensors (Thermometrics)

4,480 -
RFQ
YQS5940PTH

Datasheet

- YQ Bulk Active - - - - - - - - - - - - - - - - - -
YS6101

YS6101

PTC RESET FUSE 75V RADIAL DISC

Amphenol Advanced Sensors (Thermometrics)

7,123 -
RFQ

-

Radial, Disc YS Bulk Active Ceramic 75V - - - - - - 6 Ohms - - - - Through Hole 0.315" Dia x 0.059" T (8.00mm x 1.50mm) 0.059" (1.50mm) - 0.197" (5.00mm)
60R375XHSL

60R375XHSL

PTC RESET FUSE 60V 3.75A RADIAL

Littelfuse Inc.

4,175 -
RFQ
60R375XHSL

Datasheet

Radial, Disc POLY-FUSE®, 60R Bulk Obsolete Polymeric 60V 3.75 A 7.5 A 40 A 24 s 30 mOhms 80 mOhms - -40°C ~ 85°C - - - Through Hole 1.035" Dia x 0.122" T (26.30mm x 3.10mm) 1.224" (31.10mm) - 0.402" (10.20mm)
CMF-RLC50-0

CMF-RLC50-0

PTC RESET FUSE 230V 65MA RADIAL

Bourns Inc.

5,506 -
RFQ
CMF-RLC50-0

Datasheet

Radial, Disc CMF-RLC Bulk Obsolete Ceramic 230V (650V Int) 65 mA 150 mA 3 A 100 ms - - 50 Ohms - - - - Through Hole 0.354" L x 0.177" W (9.00mm x 4.50mm) 0.378" (9.60mm) - 0.200" (5.08mm)
CMF-RLC50-10-0

CMF-RLC50-10-0

PTC RESET FUSE 230V 65MA RADIAL

Bourns Inc.

5,006 -
RFQ
CMF-RLC50-10-0

Datasheet

Radial, Disc CMF-RLC Bulk Obsolete Ceramic 230V (650V Int) 65 mA 150 mA 3 A 100 ms - - 50 Ohms - - - - Through Hole 0.354" L x 0.177" W (9.00mm x 4.50mm) 0.378" (9.60mm) - 0.200" (5.08mm)
CMF-RQ50-0

CMF-RQ50-0

PTC RESET FUSE 230V 90MA 8DIP

Bourns Inc.

6,512 -
RFQ

-

8-DIP (0.197", 5.00mm) CMF-RQ Bulk Obsolete Ceramic 230V (600V Int) 90 mA 190 mA 3 A 100 ms - - 50 Ohms - - - - Through Hole 0.787" L x 0.354" W (20.00mm x 9.00mm) 0.398" (10.10mm) - 0.197" (5.00mm)
CMF-RQ50-10-0

CMF-RQ50-10-0

PTC RESET FUSE 230V 90MA 8DIP

Bourns Inc.

7,543 -
RFQ

-

8-DIP (0.197", 5.00mm) CMF-RQ Bulk Obsolete Ceramic 230V (600V Int) 90 mA 190 mA 3 A 100 ms - - 50 Ohms - - - - Through Hole 0.787" L x 0.354" W (20.00mm x 9.00mm) 0.398" (10.10mm) - 0.197" (5.00mm)
MF-R015/600-A05-0

MF-R015/600-A05-0

PTC RESET FUSE 250V 150MA RADIAL

Bourns Inc.

8,179 -
RFQ
MF-R015/600-A05-0

Datasheet

Radial, Box Multifuse®, MF-R/600 Bulk 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-0

MF-R015/600-B-0

PTC RESET FUSE 250V 150MA RADIAL

Bourns Inc.

8,267 -
RFQ
MF-R015/600-B-0

Datasheet

Radial, Box Multifuse®, MF-R/600 Bulk 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-B05-0

MF-R015/600-B05-0

PTC RESET FUSE 250V 150MA RADIAL

Bourns Inc.

6,800 -
RFQ
MF-R015/600-B05-0

Datasheet

Radial, Box Multifuse®, MF-R/600 Bulk 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-0

MF-R015/600-F-0

PTC RESET FUSE 250V 150MA RADIAL

Bourns Inc.

7,198 -
RFQ
MF-R015/600-F-0

Datasheet

Radial, Box Multifuse®, MF-R/600 Bulk 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-R017-0-99

MF-R017-0-99

PTC RESET FUSE 60V 170MA RADIAL

Bourns Inc.

5,592 -
RFQ
MF-R017-0-99

Datasheet

Radial, Disc Multifuse®, MF-R Bulk Obsolete Polymeric 60V 170 mA 340 mA 40 A 3 s 2 Ohms 8 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-R020-0-99

MF-R020-0-99

PTC RESET FUSE 60V 200MA RADIAL

Bourns Inc.

4,366 -
RFQ
MF-R020-0-99

Datasheet

Radial, Disc Multifuse®, MF-R Bulk Obsolete Polymeric 60V 200 mA 400 mA 40 A 2.2 s 1.5 Ohms 4.4 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-R025-0-99

MF-R025-0-99

PTC RESET FUSE 60V 250MA RADIAL

Bourns Inc.

3,052 -
RFQ
MF-R025-0-99

Datasheet

Radial, Disc Multifuse®, MF-R Bulk Obsolete Polymeric 60V 250 mA 500 mA 40 A 2.5 s 1 Ohms 3 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-R030-0-99

MF-R030-0-99

PTC RESET FUSE 60V 300MA RADIAL

Bourns Inc.

8,166 -
RFQ
MF-R030-0-99

Datasheet

Radial, Disc Multifuse®, MF-R Bulk Obsolete Polymeric 60V 300 mA 600 mA 40 A 3 s 760 mOhms 2.1 Ohms - -40°C ~ 85°C - - - Through Hole 0.291" Dia x 0.122" T (7.40mm x 3.10mm) 0.528" (13.40mm) - 0.201" (5.10mm)
MF-R040-0-99

MF-R040-0-99

PTC RESET FUSE 60V 400MA RADIAL

Bourns Inc.

5,672 -
RFQ
MF-R040-0-99

Datasheet

Radial, Disc Multifuse®, MF-R Bulk Obsolete Polymeric 60V 400 mA 800 mA 40 A 3.8 s 520 mOhms 1.29 Ohms - -40°C ~ 85°C - - - Through Hole 0.291" Dia x 0.122" T (7.40mm x 3.10mm) 0.539" (13.70mm) - 0.201" (5.10mm)
MF-R050-0-99

MF-R050-0-99

PTC RESET FUSE 60V 500MA RADIAL

Bourns Inc.

9,863 -
RFQ
MF-R050-0-99

Datasheet

Radial, Disc Multifuse®, MF-R Bulk Obsolete Polymeric 60V 500 mA 1 A 40 A 4 s 410 mOhms 1.17 Ohms - -40°C ~ 85°C - - - Through Hole 0.311" Dia x 0.122" T (7.90mm x 3.10mm) 0.539" (13.70mm) - 0.201" (5.10mm)
MF-R065-0-99

MF-R065-0-99

PTC RESET FUSE 60V 650MA RADIAL

Bourns Inc.

6,298 -
RFQ
MF-R065-0-99

Datasheet

Radial, Disc Multifuse®, MF-R Bulk Obsolete Polymeric 60V 650 mA 1.3 A 40 A 5.3 s 270 mOhms 720 mOhms - -40°C ~ 85°C - - - Through Hole 0.382" Dia x 0.122" T (9.70mm x 3.10mm) 0.598" (15.20mm) - 0.201" (5.10mm)
MF-R075/90-0

MF-R075/90-0

PTC RESET FUSE 90V 750MA RADIAL

Bourns Inc.

7,901 -
RFQ
MF-R075/90-0

Datasheet

Radial, Disc Multifuse®, MF-R/90 Bulk Obsolete Polymeric 90V 750 mA 1.5 A 10 A 60 s 370 mOhms 1.65 Ohms - -40°C ~ 85°C - - - Through Hole 0.409" Dia x 0.122" T (10.40mm x 3.10mm) 0.630" (16.00mm) - 0.201" (5.10mm)
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