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

MF-RX075/72-0

PTC RESET FUSE 72V 750MA RADIAL

Bourns Inc.

1,332 -
RFQ
MF-RX075/72-0

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 - - - Through Hole 0.409" Dia x 0.122" T (10.40mm x 3.10mm) 0.630" (16.00mm) - 0.201" (5.10mm)
RKEF065-AP

RKEF065-AP

PTC RESET FUSE 60V 650MA RADIAL

Littelfuse Inc.

1,224 -
RFQ
RKEF065-AP

Datasheet

Radial, Disc PolySwitch®, RKEF Cut Tape (CT) Active Polymeric 60V 650 mA 1.3 A 40 A 1 s 250 mOhms 720 mOhms - -40°C ~ 85°C - - - Through Hole 0.280" L x 0.140" W (7.10mm x 3.56mm) 0.480" (12.20mm) - 0.199" (5.05mm)
RUEF185-AP

RUEF185-AP

PTC RESET FUSE 30V 1.85A RADIAL

Littelfuse Inc.

3,914 -
RFQ
RUEF185-AP

Datasheet

Radial, Disc PolySwitch®, RUEF Cut Tape (CT) Active Polymeric 30V 1.85 A 3.7 A 100 A 8.7 s 30 mOhms 90 mOhms - -40°C ~ 85°C - - - Through Hole 0.402" Dia x 0.118" T (10.20mm x 3.00mm) 0.618" (15.70mm) - 0.199" (5.05mm)
PTSA120624V020

PTSA120624V020

PTC RESET FUSE 200MA 24V 1206

Eaton - Electronics Division

3,807 -
RFQ
PTSA120624V020

Datasheet

1206 (3216 Metric), Concave PTSA1206 Tape & Reel (TR) Active - 24V 200 mA 420 mA 40 A 100 ms 300 mOhms 3.1 Ohms - -40°C ~ 85°C Automotive AEC-Q200 - Surface Mount 0.132" L x 0.067" W (3.35mm x 1.70mm) - 0.039" (1.00mm) -
PTSA120648V016

PTSA120648V016

PTC RESET FUSE 160MA 48V 1206

Eaton - Electronics Division

3,742 -
RFQ
PTSA120648V016

Datasheet

1206 (3216 Metric), Concave PTSA1206 Tape & Reel (TR) Active - 48V 160 mA 450 mA 10 A 400 ms 1.1 Ohms 5 Ohms - -40°C ~ 85°C Automotive AEC-Q200 - Surface Mount 0.132" L x 0.067" W (3.35mm x 1.70mm) - 0.039" (1.00mm) -
MF-FSML175/8-2

MF-FSML175/8-2

PTC RESET FUSE 8V 1.75A 0603

Bourns Inc.

2,979 -
RFQ
MF-FSML175/8-2

Datasheet

0603 (1608 Metric), Concave Multifuse®, MF-FSML Tape & Reel (TR) Active Polymeric 8V 1.75 A 3.5 A 50 A 5 s 8 mOhms 70 mOhms - -40°C ~ 85°C - - - Surface Mount 0.065" L x 0.033" W (1.65mm x 0.85mm) - 0.055" (1.40mm) -
PTSA120648V012

PTSA120648V012

PTC RESET FUSE 120MA 48V 1206

Eaton - Electronics Division

2,123 -
RFQ
PTSA120648V012

Datasheet

1206 (3216 Metric), Concave PTSA1206 Tape & Reel (TR) Active - 48V 120 mA 390 mA 10 A 300 ms 1.2 Ohms 15 Ohms - -40°C ~ 85°C Automotive AEC-Q200 - Surface Mount 0.132" L x 0.067" W (3.35mm x 1.70mm) - 0.039" (1.00mm) -
0ZRG0250FF1E

0ZRG0250FF1E

PTC RESET FUSE 30V 2.5A RADIAL

Bel Fuse Inc.

1,004 -
RFQ
0ZRG0250FF1E

Datasheet

Radial, Disc 0ZRG Bulk Active Polymeric 30V 2.5 A 5 A 40 A 40 s 20 mOhms 70 mOhms - -40°C ~ 85°C Automotive AEC-Q200 - Through Hole 0.449" L x 0.118" W (11.40mm x 3.00mm) 0.720" (18.30mm) - 0.201" (5.10mm)
RKEF075-2

RKEF075-2

PTC RESET FUSE 60V 750MA RADIAL

Littelfuse Inc.

14,074 -
RFQ
RKEF075-2

Datasheet

Radial, Disc PolySwitch®, RKEF Tape & Reel (TR) Active Polymeric 60V 750 mA 1.5 A 40 A 1.5 s 200 mOhms 640 mOhms - -40°C ~ 85°C - - - Through Hole 0.402" L x 0.118" W (10.20mm x 3.00mm) 0.598" (15.20mm) - 0.199" (5.05mm)
PFSM.125.2

PFSM.125.2

PTC RESET FUSE 15V 1.25A 2SMD

SCHURTER Inc.

1,990 -
RFQ
PFSM.125.2

Datasheet

2-SMD PFSM Tape & Reel (TR) Active Polymeric 15V 1.25 A 2.5 A 100 A 2 s 70 mOhms 250 mOhms - -40°C ~ 85°C Automotive AEC-Q200 - Surface Mount 0.289" L x 0.214" W (7.36mm x 5.44mm) - 0.118" (3.00mm) -
RUSBF185-2

RUSBF185-2

PTC RESET FUSE 16V 1.85A RADIAL

Littelfuse Inc.

2,970 -
RFQ
RUSBF185-2

Datasheet

Radial, Disc PolySwitch®, RUSBF Tape & Reel (TR) Active Polymeric 16V 1.85 A 3.7 A 40 A 10 s 30 mOhms 90 mOhms - -40°C ~ 85°C - - - Through Hole 0.402" L x 0.118" W (10.20mm x 3.00mm) 0.618" (15.70mm) - 0.199" (5.05mm)
MF-R185-0-17

MF-R185-0-17

PTC RESETTABLE 1.85A 30V RADIAL

Bourns Inc.

5,000 -
RFQ
MF-R185-0-17

Datasheet

Radial, Disc Multifuse®, MF-R Bulk Active Polymeric 30V 1.85 A 3.7 A 40 A 8.7 s 40 mOhms 110 mOhms - -40°C ~ 85°C Automotive AEC-Q200 - Through Hole 0.472" Dia x 0.118" T (12.00mm x 3.00mm) 0.724" (18.40mm) - 0.201" (5.10mm)
PTSLR08058V350

PTSLR08058V350

PTC RESET FUSE 3.5A 8V 0805

Eaton - Electronics Division

3,902 -
RFQ
PTSLR08058V350

Datasheet

0805 (2012 Metric), Concave PTSLR0805 Tape & Reel (TR) Active - 8V 3.5 A 7 A 50 A 5 s 4 mOhms 18 mOhms - -40°C ~ 85°C - - - Surface Mount 0.098" L x 0.063" W (2.50mm x 1.60mm) - 0.039" (1.00mm) -
MINIASMDC125F/16-2

MINIASMDC125F/16-2

PTC RESET FUSE 16V 1.25A 1812

Littelfuse Inc.

1,500 -
RFQ
MINIASMDC125F/16-2

Datasheet

1812 (4532 Metric), Concave PolySwitch®, miniASMD Tape & Reel (TR) Active Polymeric 16V 1.25 A 2.5 A 100 A 400 ms 50 mOhms 140 mOhms - -40°C ~ 85°C Automotive AEC-Q200 - Surface Mount 0.181" L x 0.128" W (4.60mm x 3.24mm) - 0.019" (0.48mm) -
MF-S175

MF-S175

PTC RESET FUSE 15V 1.75A STRAP

Bourns Inc.

5,530 -
RFQ
MF-S175

Datasheet

Strap Multifuse®, MF-S Bulk Active Polymeric 15V 1.75 A 3.8 A 100 A 4 s 50 mOhms 120 mOhms - -40°C ~ 85°C - - - User Defined 0.827" L x 0.199" W (21.00mm x 5.05mm) - 0.039" (1.00mm) -
TCF250-100T-B-0.5

TCF250-100T-B-0.5

PTC RESET FUSE 60V 90MA SMD

Littelfuse Inc.

1,961 -
RFQ
TCF250-100T-B-0.5

Datasheet

Nonstandard SMD PolySwitch®, TCF250 Bag Active Polymeric 60V (250V Int) 90 mA 150 mA 3 A 200 ms 14 Ohms 24 Ohms - -40°C ~ 85°C - - - Surface Mount 0.187" L x 0.187" W (4.75mm x 4.75mm) - 0.091" (2.30mm) -
72R020XPR

72R020XPR

PTC RESET FUSE 72V 200MA RADIAL

Littelfuse Inc.

1,864 -
RFQ
72R020XPR

Datasheet

Radial, Disc POLY-FUSE®, 72R Cut Tape (CT) Active Polymeric 72V 200 mA 400 mA 40 A 2.2 s 1.83 Ohms 4.4 Ohms - -40°C ~ 85°C - - - Through Hole 0.291" Dia x 0.122" T (7.40mm x 3.10mm) 0.461" (11.70mm) - 0.201" (5.10mm)
PTR060V0030-TR

PTR060V0030-TR

PTC RESET FUSE 60V 300MA RADIAL

Eaton - Electronics Division

5,909 -
RFQ
PTR060V0030-TR

Datasheet

Radial, Disc PTR060V Tape & Reel (TR) Active Polymeric 60V 300 mA 600 mA 40 A 3 s 880 mOhms 2.1 Ohms - -40°C ~ 85°C - - - Through Hole 0.291" Dia x 0.118" T (7.40mm x 3.00mm) 0.512" (13.00mm) - 0.197" (5.00mm)
RUSBF135-2

RUSBF135-2

PTC RESET FUSE 16V 1.35A RADIAL

Littelfuse Inc.

2,406 -
RFQ
RUSBF135-2

Datasheet

Radial, Disc PolySwitch®, RUSBF Tape & Reel (TR) Active Polymeric 16V 1.35 A 2.7 A 40 A 4.5 s 40 mOhms 112 mOhms - -40°C ~ 85°C - - - Through Hole 0.350" L x 0.118" W (8.90mm x 3.00mm) 0.532" (13.50mm) - 0.199" (5.05mm)
ASMD185F-2

ASMD185F-2

PTC RESET FUSE 16V 1.85A 2SMD

Littelfuse Inc.

1,917 -
RFQ
ASMD185F-2

Datasheet

2-SMD PolySwitch®, ASMD Tape & Reel (TR) Active Polymeric 16V 1.85 A 3.7 A 40 A 11.3 s 32 mOhms 126 mOhms - -40°C ~ 85°C Automotive AEC-Q200 - Surface Mount 0.343" L x 0.250" W (8.70mm x 6.36mm) - 0.118" (3.00mm) -
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