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
TRF250-110U-B-0.5-2

TRF250-110U-B-0.5-2

PTC RESET FUSE 60V 110MA RADIAL

Littelfuse Inc.

1,340 -
RFQ
TRF250-110U-B-0.5-2

Datasheet

Radial, Disc PolySwitch®, TRF250 Tape & Reel (TR) Active Polymeric 60V (250V Int) 110 mA 220 mA 3 A 750 ms 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)
MF-NSML175/6-2

MF-NSML175/6-2

PTC RESET FUSE 6V 1.75A 1206

Bourns Inc.

4,980 -
RFQ
MF-NSML175/6-2

Datasheet

1206 (3216 Metric), Concave Multifuse®, MF-NSML/X Tape & Reel (TR) Active Polymeric 6V 1.75 A 3.5 A 50 A 5 s 6 mOhms 50 mOhms - -40°C ~ 85°C - - - Surface Mount 0.128" L x 0.063" W (3.25mm x 1.60mm) - 0.028" (0.70mm) -
MF-NSML450/6-2

MF-NSML450/6-2

PTC RESET FUSE 6V 4.5A 1206

Bourns Inc.

3,360 -
RFQ
MF-NSML450/6-2

Datasheet

1206 (3216 Metric), Concave Multifuse®, MF-NSML/X Tape & Reel (TR) Active Polymeric 6V 4.5 A 9 A 50 A 2 s 2 mOhms 14 mOhms - -40°C ~ 85°C - - - Surface Mount 0.128" L x 0.063" W (3.25mm x 1.60mm) - 0.039" (1.00mm) -
MF-RM016/240-0

MF-RM016/240-0

PTC RESET FUSE 240V 160MA RADIAL

Bourns Inc.

2,955 -
RFQ
MF-RM016/240-0

Datasheet

Radial, Disc Multifuse®, MF-RM Bulk Active Polymeric 240V (265V Int) 160 mA 370 mA 2 A 15 s 2.5 Ohms 7.8 Ohms - -20°C ~ 85°C - - - Through Hole 0.390" Dia x 0.150" T (9.90mm x 3.80mm) 0.543" (13.80mm) - 0.114" (2.90mm)
MF-RM033/240-0

MF-RM033/240-0

PTC RESET FUSE 240V 330MA RADIAL

Bourns Inc.

2,871 -
RFQ
MF-RM033/240-0

Datasheet

Radial, Disc Multifuse®, MF-RM Bulk Active Polymeric 240V (265V Int) 330 mA 740 mA 4.5 A 21 s 770 mOhms 2.6 Ohms - -20°C ~ 85°C - - - Through Hole 0.449" L x 0.150" W (11.40mm x 3.80mm) 0.787" (20.00mm) - 0.114" (2.90mm)
PTSLR12106V400

PTSLR12106V400

PTC RESET FUSE 6V 4A 1210

Eaton - Electronics Division

4,500 -
RFQ
PTSLR12106V400

Datasheet

1210 (3225 Metric), Concave PTSLR1210 Tape & Reel (TR) Active Polymeric 6V 4 A 8 A 50 A 2 s 2 mOhms 14 mOhms - -40°C ~ 85°C - - - Surface Mount 0.127" L x 0.101" W (3.22mm x 2.58mm) - 0.047" (1.20mm) -
ASMD150F-2

ASMD150F-2

PTC RESET FUSE 16V 1.27A 2SMD

Littelfuse Inc.

4,398 -
RFQ
ASMD150F-2

Datasheet

2-SMD PolySwitch®, ASMD Tape & Reel (TR) Active Polymeric 16V 1.27 A 2.95 A 40 A 25 s 49 mOhms 250 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) -
MF-SM013/250V-0

MF-SM013/250V-0

PTC RESET FUSE 60V 130MA 2SMD

Bourns Inc.

1,762 -
RFQ
MF-SM013/250V-0

Datasheet

2-SMD Multifuse®, MF-SM/250V Bulk Active Polymeric 60V (250V Int) 130 mA - 3 A - 4 Ohms 16 Ohms - -40°C ~ 85°C - - - Surface Mount 0.350" L x 0.283" W (8.90mm x 7.20mm) - 0.402" (10.20mm) -
MF-R250-0-14

MF-R250-0-14

PTC RESETTABLE 2.5A 30V RADIAL L

Bourns Inc.

4,500 -
RFQ
MF-R250-0-14

Datasheet

Radial, Disc Multifuse®, MF-R Bulk Active Polymeric 30V 2.5 A 5 A 40 A 10.3 s 25 mOhms 70 mOhms - -40°C ~ 85°C Automotive AEC-Q200 - Through Hole 0.472" L x 0.118" W (12.00mm x 3.00mm) 0.720" (18.30mm) - 0.201" (5.10mm)
MF-R250-2-10

MF-R250-2-10

PTC RESET FUSE 30V 2.5A RADIAL

Bourns Inc.

3,506 -
RFQ
MF-R250-2-10

Datasheet

Radial, Disc Multifuse®, MF-R Cut Tape (CT) Active Polymeric 30V 2.5 A 5 A 40 A 10.3 s 25 mOhms 70 mOhms - -40°C ~ 85°C - - - Through Hole 0.472" L x 0.118" W (12.00mm x 3.00mm) 0.720" (18.30mm) - 0.201" (5.10mm)
MF-R250-AP

MF-R250-AP

PTC RESET FUSE 30V 2.5A RADIAL

Bourns Inc.

2,940 -
RFQ
MF-R250-AP

Datasheet

Radial, Disc Multifuse®, MF-R Cut Tape (CT) Active Polymeric 30V 2.5 A 5 A 40 A 10.3 s 25 mOhms 70 mOhms - -40°C ~ 85°C - - - Through Hole 0.472" L x 0.118" W (12.00mm x 3.00mm) 0.720" (18.30mm) - 0.201" (5.10mm)
MF-SMHT136-2

MF-SMHT136-2

PTC RESET FUSE 16V 1.36A 2SMD

Bourns Inc.

2,573 -
RFQ
MF-SMHT136-2

Datasheet

2-SMD Multifuse®, MF-SMHT Tape & Reel (TR) Active Polymeric 16V 1.36 A 2.72 A 100 A 10 s 85 mOhms 330 mOhms - -40°C ~ 125°C Automotive AEC-Q200 - Surface Mount 0.314" L x 0.264" W (7.98mm x 6.71mm) - 0.118" (3.00mm) -
PICOASMDC035S-2

PICOASMDC035S-2

PPTC-MINI-PSW

Littelfuse Inc.

3,995 -
RFQ
PICOASMDC035S-2

Datasheet

0805 (2012 Metric), Concave PolySwitch® picoASMDC Tape & Reel (TR) Active Polymeric 6V 350 mA 750 mA 100 A 200 ms 350 mOhms 1.4 Ohms - -40°C ~ 85°C Automotive AEC-Q200 - Surface Mount 0.083" L x 0.055" W (2.10mm x 1.40mm) - 0.027" (0.68mm) -
B59995C0120A051

B59995C0120A051

PTC RESET FUSE 30V 120MA RADIAL

EPCOS - TDK Electronics

2,500 -
RFQ
B59995C0120A051

Datasheet

Radial, Disc B59995 Tape & Reel (TR) Active Ceramic 30V 120 mA 240 mA 700 mA - - - 13 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)
NANOASMDC050F/13.2-2

NANOASMDC050F/13.2-2

PTC RESET FUSE 13.2V 500MA 1206

Littelfuse Inc.

2,440 -
RFQ
NANOASMDC050F/13.2-2

Datasheet

1206 (3216 Metric), Concave PolySwitch®, nanoASMD Bulk Active Polymeric 13.2V 500 mA 1.1 A 70 A 100 ms 200 mOhms 750 mOhms - -40°C ~ 85°C Automotive AEC-Q200 - Surface Mount 0.126" L x 0.063" W (3.20mm x 1.59mm) - 0.029" (0.74mm) -
TRF250-120UA

TRF250-120UA

PTC RESET FUSE 60V 120MA RADIAL

Littelfuse Inc.

1,695 -
RFQ
TRF250-120UA

Datasheet

Radial, Disc PolySwitch®, TRF250 Bag Active Polymeric 60V (250V Int) 120 mA 240 mA 3 A 1 s 6 Ohms 16 Ohms - -40°C ~ 85°C - - - Through Hole 0.236" L x 0.150" W (6.00mm x 3.80mm) 0.394" (10.00mm) - 0.197" (5.00mm)
MF-RM025/240-2

MF-RM025/240-2

PTC RESET FUSE 240V 250MA RADIAL

Bourns Inc.

11,535 -
RFQ
MF-RM025/240-2

Datasheet

Radial, Disc Multifuse®, MF-RM Tape & Reel (TR) Active Polymeric 240V (265V Int) 250 mA 560 mA 3.5 A 18.5 s 1.3 Ohms 3.8 Ohms - -20°C ~ 85°C - - - Through Hole 0.394" L x 0.150" W (10.00mm x 3.80mm) 0.787" (20.00mm) - 0.114" (2.90mm)
PICOASMDC110S-2

PICOASMDC110S-2

PPTC-MINI-PSW

Littelfuse Inc.

2,580 -
RFQ
PICOASMDC110S-2

Datasheet

0805 (2012 Metric), Concave PolySwitch® picoASMDC Tape & Reel (TR) Active Polymeric 6V 1.1 A 2.2 A 40 A 200 ms 50 mOhms 170 mOhms - -40°C ~ 85°C Automotive AEC-Q200 - Surface Mount 0.083" L x 0.055" W (2.10mm x 1.40mm) - 0.047" (1.20mm) -
PTSLR12066V600

PTSLR12066V600

PTC RESET FUSE 6A 6V 1206

Eaton - Electronics Division

3,583 -
RFQ
PTSLR12066V600

Datasheet

1206 (3216 Metric), Concave PTSLR1206 Tape & Reel (TR) Active - 6V 6 A 12 A 50 A 5 s 1 mOhms 10 mOhms - -40°C ~ 85°C - - - Surface Mount 0.138" L x 0.071" W (3.50mm x 1.80mm) - 0.039" (1.00mm) -
PTSLR12066V700

PTSLR12066V700

PTC RESET FUSE 7A 6V 1206

Eaton - Electronics Division

3,439 -
RFQ
PTSLR12066V700

Datasheet

1206 (3216 Metric), Concave PTSLR1206 Tape & Reel (TR) Active - 6V 7 A 14 A 50 A 5 s 1 mOhms 8 mOhms - -40°C ~ 85°C - - - Surface Mount 0.138" L x 0.071" W (3.50mm x 1.80mm) - 0.051" (1.30mm) -
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