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-RX075/72-0-17

MF-RX075/72-0-17

PTC RESETTABLE 0.75A 72V RADIAL

Bourns Inc.

7,887 -
RFQ
MF-RX075/72-0-17

Datasheet

Radial, Disc Multifuse®, MF-RX/72 Bulk 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-RX030/72-2-17

MF-RX030/72-2-17

PTC RESETTABLE 0.3A 72V RADIAL L

Bourns Inc.

2,793 -
RFQ
MF-RX030/72-2-17

Datasheet

Radial, Disc Multifuse®, MF-RX/72 Tape & Reel (TR) Active Polymeric 72V 300 mA 600 mA 40 A 3 s 760 mOhms 2.1 Ohms - -40°C ~ 85°C Automotive AEC-Q200 - Through Hole 0.291" Dia x 0.122" T (7.40mm x 3.10mm) 0.528" (13.40mm) - 0.201" (5.10mm)
MF-RX025/72-AP-17

MF-RX025/72-AP-17

PTC RESETTABLE 0.25A 72V RADIAL

Bourns Inc.

4,302 -
RFQ
MF-RX025/72-AP-17

Datasheet

Radial, Disc Multifuse®, MF-RX/72 Tape & Box (TB) Active Polymeric 72V 250 mA 500 mA 40 A 2.5 s 1 Ohms 3 Ohms - -40°C ~ 85°C Automotive AEC-Q200 - Through Hole 0.291" Dia x 0.122" T (7.40mm x 3.10mm) 0.500" (12.70mm) - 0.201" (5.10mm)
MF-R065-2-17

MF-R065-2-17

PTC RESETTABLE 0.6A 60V RADIAL L

Bourns Inc.

3,133 -
RFQ
MF-R065-2-17

Datasheet

Radial, Disc Multifuse®, MF-R Tape & Reel (TR) Active Polymeric 60V 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-R040-AP-17

MF-R040-AP-17

PTC RESETTABLE 0.4A 60V RADIAL L

Bourns Inc.

8,758 -
RFQ
MF-R040-AP-17

Datasheet

Radial, Disc Multifuse®, MF-R Tape & Box (TB) Active Polymeric 60V 400 mA 800 mA 40 A 3.8 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-RX030/72-AP-17

MF-RX030/72-AP-17

PTC RESETTABLE 0.3A 72V RADIAL L

Bourns Inc.

8,392 -
RFQ
MF-RX030/72-AP-17

Datasheet

Radial, Disc Multifuse®, MF-RX/72 Tape & Box (TB) Active Polymeric 72V 300 mA 600 mA 40 A 3 s 760 mOhms 2.1 Ohms - -40°C ~ 85°C Automotive AEC-Q200 - Through Hole 0.291" Dia x 0.122" T (7.40mm x 3.10mm) 0.528" (13.40mm) - 0.201" (5.10mm)
MF-RX020/72-2-17

MF-RX020/72-2-17

PTC RESETTABLE 0.2A 72V RADIAL L

Bourns Inc.

5,687 -
RFQ
MF-RX020/72-2-17

Datasheet

Radial, Disc Multifuse®, MF-RX/72 Tape & Reel (TR) Active Polymeric 72V 200 mA 400 mA 40 A 2.2 s 1.5 Ohms 4.4 Ohms - -40°C ~ 85°C Automotive AEC-Q200 - Through Hole 0.291" Dia x 0.122" T (7.40mm x 3.10mm) 0.500" (12.70mm) - 0.201" (5.10mm)
MF-R050-AP-17

MF-R050-AP-17

PTC RESETTABLE 0.5A 60V RADIAL L

Bourns Inc.

9,258 -
RFQ
MF-R050-AP-17

Datasheet

Radial, Disc Multifuse®, MF-R Tape & Reel (TR) Active Polymeric 60V 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-R075-AP-17

MF-R075-AP-17

PTC RESETTABLE 0.75A 60V RADIAL

Bourns Inc.

3,231 -
RFQ
MF-R075-AP-17

Datasheet

Radial, Disc Multifuse®, MF-R Tape & Box (TB) Active Polymeric 60V 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-R040-2-17

MF-R040-2-17

PTC RESETTABLE 0.4A 60V RADIAL L

Bourns Inc.

2,380 -
RFQ
MF-R040-2-17

Datasheet

Radial, Disc Multifuse®, MF-R Tape & Reel (TR) Active Polymeric 60V 400 mA 800 mA 40 A 3.8 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-RX050/72-0-17

MF-RX050/72-0-17

PTC RESETTABLE 0.5A 72V RADIAL L

Bourns Inc.

8,207 -
RFQ
MF-RX050/72-0-17

Datasheet

Radial, Disc Multifuse®, MF-RX/72 Bulk 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-R135-AP-17

MF-R135-AP-17

PTC RESETTABLE 1.35A 30V RADIAL

Bourns Inc.

7,896 -
RFQ
MF-R135-AP-17

Datasheet

Radial, Disc Multifuse®, MF-R Tape & Box (TB) Active Polymeric 30V 1.35 A 2.7 A 40 A 7.3 s 65 mOhms 170 mOhms - -40°C ~ 85°C Automotive AEC-Q200 - Through Hole 0.350" Dia x 0.118" T (8.90mm x 3.00mm) 0.744" (18.90mm) - 0.201" (5.10mm)
MF-R135-2-17

MF-R135-2-17

PTC RESETTABLE 1.35A 30V RADIAL

Bourns Inc.

4,860 -
RFQ
MF-R135-2-17

Datasheet

Radial, Disc Multifuse®, MF-R Tape & Reel (TR) Active Polymeric 30V 1.35 A 2.7 A 40 A 7.3 s 65 mOhms 170 mOhms - -40°C ~ 85°C Automotive AEC-Q200 - Through Hole 0.350" Dia x 0.118" T (8.90mm x 3.00mm) 0.118" (3.00mm) - 0.201" (5.10mm)
MF-R050-2-17

MF-R050-2-17

PTC RESETTABLE 0.5A 60V RADIAL L

Bourns Inc.

6,613 -
RFQ
MF-R050-2-17

Datasheet

Radial, Disc Multifuse®, MF-R Tape & Reel (TR) Active Polymeric 60V 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-R075-2-17

MF-R075-2-17

PTC RESETTABLE 0.75A 60V RADIAL

Bourns Inc.

8,483 -
RFQ
MF-R075-2-17

Datasheet

Radial, Disc Multifuse®, MF-R Tape & Reel (TR) Active Polymeric 60V 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-RX020/72-AP-17

MF-RX020/72-AP-17

PTC RESETTABLE 0.2A 72V RADIAL L

Bourns Inc.

4,580 -
RFQ
MF-RX020/72-AP-17

Datasheet

Radial, Disc Multifuse®, MF-RX/72 Tape & Box (TB) Active Polymeric 72V 200 mA 400 mA 40 A 2.2 s 1.5 Ohms 4.4 Ohms - -40°C ~ 85°C Automotive AEC-Q200 - Through Hole 0.291" Dia x 0.122" T (7.40mm x 3.10mm) 0.500" (12.70mm) - 0.201" (5.10mm)
MF-R110-2-17

MF-R110-2-17

PTC RESETTABLE 1.1A 30V RADIAL L

Bourns Inc.

3,450 -
RFQ
MF-R110-2-17

Datasheet

Radial, Disc Multifuse®, MF-R Tape & Reel (TR) Active Polymeric 30V 1.1 A 2.2 A 40 A 6.6 s 100 mOhms 270 mOhms - -40°C ~ 85°C Automotive AEC-Q200 - Through Hole 0.350" Dia x 0.118" T (8.90mm x 3.00mm) 0.551" (14.00mm) - 0.201" (5.10mm)
MF-RX040/72-0-17

MF-RX040/72-0-17

PTC RESETTABLE 0.4A 72V RADIAL L

Bourns Inc.

9,510 -
RFQ
MF-RX040/72-0-17

Datasheet

Radial, Disc Multifuse®, MF-RX/72 Bulk 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-R110-AP-17

MF-R110-AP-17

PTC RESETTABLE 1.1A 30V RADIAL L

Bourns Inc.

3,202 -
RFQ
MF-R110-AP-17

Datasheet

Radial, Disc Multifuse®, MF-R Tape & Box (TB) Active Polymeric 30V 1.1 A 2.2 A 40 A 6.6 s 100 mOhms 270 mOhms - -40°C ~ 85°C Automotive AEC-Q200 - Through Hole 0.350" Dia x 0.118" T (8.90mm x 3.00mm) 0.551" (14.00mm) - 0.201" (5.10mm)
MF-R090-2-17

MF-R090-2-17

PTC RESETTABLE 0.9A 60V RADIAL L

Bourns Inc.

9,480 -
RFQ
MF-R090-2-17

Datasheet

Radial, Disc Multifuse®, MF-R Tape & Reel (TR) Active Polymeric 60V 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)
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