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
RXEF250-1

RXEF250-1

PTC RESET FUSE 72V 2.5A RADIAL

Littelfuse Inc.

8,053 -
RFQ
RXEF250-1

Datasheet

Radial, Disc PolySwitch®, RXEF Bulk Obsolete Polymeric 72V 2.5 A 5 A 40 A 15.6 s 50 mOhms 130 mOhms - -40°C ~ 85°C - - - Through Hole 0.819" Dia x 0.118" T (20.80mm x 3.00mm) 1.000" (25.40mm) - 0.400" (10.15mm)
PRG21BC4R7MM1RK

PRG21BC4R7MM1RK

PTC RESET FUSE

Murata Electronics

5,412 -
RFQ

-

- * Tape & Reel (TR) Active - - - - - - - - - - - - - - - - - -
PRG21BC2R2MM1RK

PRG21BC2R2MM1RK

PTC RESET FUSE

Murata Electronics

8,899 -
RFQ

-

- * Tape & Reel (TR) Active - - - - - - - - - - - - - - - - - -
PRG21BC6R8MM1RK

PRG21BC6R8MM1RK

PTC RESET FUSE

Murata Electronics

2,262 -
RFQ

-

- * Tape & Reel (TR) Active - - - - - - - - - - - - - - - - - -
PRG21BC3R3MM1RK

PRG21BC3R3MM1RK

PTC RESET FUSE

Murata Electronics

6,615 -
RFQ

-

- * Tape & Reel (TR) Active - - - - - - - - - - - - - - - - - -
TRF250-110U-2

TRF250-110U-2

PTC RESET FUSE 60V 110MA RADIAL

Littelfuse Inc.

8,286 -
RFQ
TRF250-110U-2

Datasheet

Radial, Disc PolySwitch®, TRF250 Tape & Reel (TR) Obsolete Polymeric 60V (250V Int) 110 mA 220 mA 3 A 1.2 s 5 Ohms 16 Ohms - -40°C ~ 85°C - - - Through Hole 0.209" Dia x 0.150" T (5.30mm x 3.80mm) 0.370" (9.40mm) - 0.197" (5.00mm)
B59990C0080A051

B59990C0080A051

PTC RESET FUSE 80V 30MA RADIAL

EPCOS - TDK Electronics

3,588 -
RFQ
B59990C0080A051

Datasheet

Radial, Disc B59990 Tape & Reel (TR) Active Ceramic 80V 30 mA 60 mA 700 mA - - - 55 Ohms -40°C ~ 85°C - - - Through Hole 0.157" Dia x 0.138" T (4.00mm x 3.50mm) 0.295" (7.50mm) - 0.197" (5.00mm)
PTR060V0017-TR1

PTR060V0017-TR1

PTC RESET FUSE 60V 170MA RADIAL

Eaton - Electronics Division

7,081 -
RFQ
PTR060V0017-TR1

Datasheet

Radial, Disc PTR060V Tape & Reel (TR) Active Polymeric 60V 170 mA 340 mA 40 A 3 s 3.3 Ohms 8 Ohms - -40°C ~ 85°C - - - Through Hole 0.291" Dia x 0.118" T (7.40mm x 3.00mm) 0.500" (12.70mm) - 0.197" (5.00mm)
MF-R160-AP

MF-R160-AP

PTC RESET FUSE 30V 1.6A RADIAL

Bourns Inc.

6,641 -
RFQ
MF-R160-AP

Datasheet

Radial, Disc Multifuse®, MF-R Tape & Box (TB) Active Polymeric 30V 1.6 A 3.2 A 40 A 8 s 55 mOhms 150 mOhms - -40°C ~ 85°C - - - Through Hole 0.402" Dia x 0.118" T (10.20mm x 3.00mm) 0.661" (16.80mm) - 0.201" (5.10mm)
MF-RX135/72-AP-14

MF-RX135/72-AP-14

FUSE PTC RESETTABLE

Bourns Inc.

9,962 -
RFQ
MF-RX135/72-AP-14

Datasheet

Radial, Disc MF-RX/72 Tape & Box (TB) Active - 72V 1.35 A 2.7 A 40 A 9.6 s - - - - - - - Through Hole 0.483" L x 0.122" W (12.26mm x 3.10mm) 0.718" (18.26mm) - 0.201" (5.10mm)
MF-RX110/72-AP-14

MF-RX110/72-AP-14

PTC RESET FUSE 72V 1.1A RADIAL

Bourns Inc.

3,887 -
RFQ
MF-RX110/72-AP-14

Datasheet

Radial, Disc Multifuse®, MF-RX/72 Tape & Box (TB) Active Polymeric 72V 1.1 A 2.2 A 40 A 8.2 s 150 mOhms 380 mOhms - -40°C ~ 85°C - - - Through Hole 0.427" L x 0.122" W (10.84mm x 3.10mm) 0.663" (16.84mm) - 0.201" (5.10mm)
MF-RX090/72-AP-17

MF-RX090/72-AP-17

PTC RESETTABLE 0.9A 72V RADIAL L

Bourns Inc.

3,551 -
RFQ
MF-RX090/72-AP-17

Datasheet

Radial, Disc Multifuse®, MF-RX/72 Tape & Box (TB) Active Polymeric 72V 900 mA 1.8 A 40 A 7.2 s 140 mOhms 470 mOhms - -40°C ~ 85°C Automotive AEC-Q200 - Through Hole 0.461" Dia x 0.122" T (11.70mm x 3.10mm) 0.657" (16.70mm) - 0.201" (5.10mm)
MF-RX075/72-AP-17

MF-RX075/72-AP-17

PTC RESETTABLE 0.75A 72V RADIAL

Bourns Inc.

4,095 -
RFQ
MF-RX075/72-AP-17

Datasheet

Radial, Disc Multifuse®, MF-RX/72 Tape & Box (TB) Active Polymeric 72V 750 mA 1.5 A 40 A 6.3 s 180 mOhms 600 mOhms - -40°C ~ 85°C Automotive AEC-Q200 - Through Hole 0.409" Dia x 0.122" T (10.40mm x 3.10mm) 0.630" (16.00mm) - 0.201" (5.10mm)
MF-RX040/72-AP-17

MF-RX040/72-AP-17

PTC RESETTABLE 0.4A 72V RADIAL L

Bourns Inc.

7,821 -
RFQ
MF-RX040/72-AP-17

Datasheet

Radial, Disc Multifuse®, MF-RX/72 Tape & Box (TB) Active Polymeric 72V 400 mA 800 mA 40 A 3.9 s 520 mOhms 1.29 Ohms - -40°C ~ 85°C Automotive AEC-Q200 - Through Hole 0.291" Dia x 0.122" T (7.40mm x 3.10mm) 0.539" (13.70mm) - 0.201" (5.10mm)
MF-RX065/72-AP-17

MF-RX065/72-AP-17

PTC RESETTABLE 0.65A 72V RADIAL

Bourns Inc.

8,822 -
RFQ
MF-RX065/72-AP-17

Datasheet

Radial, Disc Multifuse®, MF-RX/72 Tape & Box (TB) Active Polymeric 72V 650 mA 1.3 A 40 A 5.3 s 270 mOhms 720 mOhms - -40°C ~ 85°C Automotive AEC-Q200 - Through Hole 0.382" Dia x 0.122" T (9.70mm x 3.10mm) 0.598" (15.20mm) - 0.201" (5.10mm)
MF-RX065/72-2-17

MF-RX065/72-2-17

PTC RESETTABLE 0.65A 72V RADIAL

Bourns Inc.

2,645 -
RFQ
MF-RX065/72-2-17

Datasheet

Radial, Disc Multifuse®, MF-RX/72 Tape & Reel (TR) Active Polymeric 72V 650 mA 1.3 A 40 A 5.3 s 270 mOhms 720 mOhms - -40°C ~ 85°C Automotive AEC-Q200 - Through Hole 0.382" Dia x 0.122" T (9.70mm x 3.10mm) 0.598" (15.20mm) - 0.201" (5.10mm)
MF-RX050/72-AP-17

MF-RX050/72-AP-17

PTC RESETTABLE 0.5A 72V RADIAL L

Bourns Inc.

8,762 -
RFQ
MF-RX050/72-AP-17

Datasheet

Radial, Disc Multifuse®, MF-RX/72 Tape & Box (TB) Active Polymeric 72V 500 mA 1 A 40 A 4 s 410 mOhms 1.17 Ohms - -40°C ~ 85°C Automotive AEC-Q200 - Through Hole 0.311" Dia x 0.122" T (7.90mm x 3.10mm) 0.539" (13.70mm) - 0.201" (5.10mm)
MF-R160-0-17

MF-R160-0-17

PTC RESETTABLE 1.6A 30V RADIAL L

Bourns Inc.

9,873 -
RFQ
MF-R160-0-17

Datasheet

Radial, Disc Multifuse®, MF-R Bulk Active Polymeric 30V 1.6 A 3.2 A 40 A 8 s 55 mOhms 150 mOhms - -40°C ~ 85°C Automotive AEC-Q200 - Through Hole 0.402" Dia x 0.118" T (10.20mm x 3.00mm) 0.661" (16.80mm) - 0.201" (5.10mm)
MF-RX040/72-2-17

MF-RX040/72-2-17

PTC RESETTABLE 0.4A 72V RADIAL L

Bourns Inc.

5,079 -
RFQ
MF-RX040/72-2-17

Datasheet

Radial, Disc Multifuse®, MF-RX/72 Tape & Reel (TR) Active Polymeric 72V 400 mA 800 mA 40 A 3.9 s 520 mOhms 1.29 Ohms - -40°C ~ 85°C Automotive AEC-Q200 - Through Hole 0.291" Dia x 0.122" T (7.40mm x 3.10mm) 0.539" (13.70mm) - 0.201" (5.10mm)
MF-RX050/72-2-17

MF-RX050/72-2-17

PTC RESETTABLE 0.5A 72V RADIAL L

Bourns Inc.

9,778 -
RFQ
MF-RX050/72-2-17

Datasheet

Radial, Disc Multifuse®, MF-RX/72 Tape & Reel (TR) Active Polymeric 72V 500 mA 1 A 40 A 4 s 410 mOhms 1.17 Ohms - -40°C ~ 85°C Automotive AEC-Q200 - Through Hole 0.311" Dia x 0.122" T (7.90mm x 3.10mm) 0.539" (13.70mm) - 0.201" (5.10mm)
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