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
TRF250-120-2

TRF250-120-2

PTC RESET FUSE 60V 120MA RADIAL

Littelfuse Inc.

2,842 -
RFQ
TRF250-120-2

Datasheet

Radial, Disc PolySwitch®, TRF250 Tape & Reel (TR) Active Polymeric 60V (250V Int) 120 mA 240 mA 3 A 2.5 s 4 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)
MF-SMDF100/33X-2

MF-SMDF100/33X-2

PTC RESETTABLE 1.1A 33V SMD 2018

Bourns Inc.

2,643 -
RFQ
MF-SMDF100/33X-2

Datasheet

2018 (5045 Metric), Concave Multifuse®, MF-SMDF Tape & Reel (TR) Active Polymeric 33V 1.1 A 2.2 A 40 A 500 ms 60 mOhms 400 mOhms - -40°C ~ 85°C - - - Surface Mount 0.200" L x 0.180" W (5.08mm x 4.58mm) - 0.049" (1.25mm) -
0ZTJ0020FF2E

0ZTJ0020FF2E

PTC RESET FUSE 30V 200MA 1206

Bel Fuse Inc.

1,567 -
RFQ
0ZTJ0020FF2E

Datasheet

1206 (3216 Metric), Concave 0ZTJ Tape & Reel (TR) Active Polymeric 30V 200 mA 500 mA 10 A 100 ms 600 mOhms 4.5 Ohms - -40°C ~ 125°C Automotive AEC-Q200 - Surface Mount 0.128" L x 0.065" W (3.25mm x 1.65mm) - 0.043" (1.10mm) -
PICOASMDC012S-2

PICOASMDC012S-2

PTC RESET FUSE 15V 120MA 0805

Littelfuse Inc.

3,201 -
RFQ
PICOASMDC012S-2

Datasheet

0805 (2012 Metric) PolySwitch®, picoASMDC Tape & Reel (TR) Active Polymeric 15V 120 mA 300 mA 20 A 100 ms 1.5 Ohms 9 Ohms - - Automotive AEC-Q200 - Surface Mount 0.083" L x 0.055" W (2.10mm x 1.40mm) - 0.027" (0.68mm) -
RGEF900

RGEF900

PTC RESET FUSE 16V 9A RADIAL

Littelfuse Inc.

1,460 -
RFQ
RGEF900

Datasheet

Radial, Disc PolySwitch®, RGEF Bag Active Polymeric 16V 9 A 15.3 A 100 A 5.5 s 4.7 mOhms 13.5 mOhms - -40°C ~ 85°C - - - Through Hole 0.531" L x 0.100" W (13.50mm x 2.50mm) 0.854" (21.70mm) - 0.199" (5.05mm)
RUEF500-2

RUEF500-2

PTC RESET FUSE 30V 5A RADIAL

Littelfuse Inc.

8,867 -
RFQ
RUEF500-2

Datasheet

Radial, Disc PolySwitch®, RUEF Tape & Reel (TR) Active Polymeric 30V 5 A 10 A 100 A 14.5 s 10 mOhms 50 mOhms - -40°C ~ 85°C - - - Through Hole 0.551" L x 0.120" W (14.00mm x 3.00mm) 0.949" (24.10mm) - 0.400" (10.15mm)
ASMD050F-2

ASMD050F-2

PTC RESET FUSE 60V 370MA 2SMD

Littelfuse Inc.

2,429 -
RFQ
ASMD050F-2

Datasheet

2-SMD PolySwitch®, ASMD Tape & Reel (TR) Active Polymeric 60V 370 mA 980 mA 10 A 20 s 290 mOhms 1.4 Ohms - -40°C ~ 85°C Automotive AEC-Q200 - Surface Mount 0.290" L x 0.202" W (7.36mm x 5.12mm) - 0.125" (3.18mm) -
2920L600/12MR

2920L600/12MR

PTC RESET FUSE 12V 6A 2920

Littelfuse Inc.

95,626 -
RFQ
2920L600/12MR

Datasheet

2920 (7351 Metric), Concave POLY-FUSE®, 2920L Tape & Reel (TR) Active Polymeric 12V 6 A 12 A 50 A 2 s 4 mOhms 20 mOhms - -40°C ~ 85°C - - - Surface Mount 0.290" L x 0.202" W (7.36mm x 5.12mm) - 0.063" (1.60mm) -
LVR040K-2

LVR040K-2

PTC RESET FUSE 240V 400MA RADIAL

Littelfuse Inc.

7,688 -
RFQ
LVR040K-2

Datasheet

Radial, Disc PolySwitch®, LVR Tape & Reel (TR) Active Polymeric 240V (265V Int) 400 mA 900 mA 5.5 A 24 s 600 mOhms 1.9 Ohms - -20°C ~ 85°C - - - Through Hole 0.453" L x 0.150" W (11.50mm x 3.80mm) 0.823" (20.90mm) - 0.200" (5.08mm)
0ZRM0110FF1E

0ZRM0110FF1E

PTC RESET FUSE 120V 1.1A RADIAL

Bel Fuse Inc.

3,657 -
RFQ
0ZRM0110FF1E

Datasheet

Radial, Disc 0ZRM Box Active Polymeric 120V 1.1 A 2.2 A 8 A 8.2 s 150 mOhms 380 mOhms - -40°C ~ 85°C Automotive AEC-Q200 - Through Hole 0.524" Dia x 0.161" T (13.30mm x 4.10mm) 0.720" (18.30mm) - 0.201" (5.10mm)
RKEF400

RKEF400

PTC RESET FUSE 60V 4A RADIAL

Littelfuse Inc.

5,526 -
RFQ
RKEF400

Datasheet

Radial, Disc PolySwitch®, RKEF Bag Active Polymeric 60V 4 A 8 A 40 A 24 s 14 mOhms 60 mOhms - -40°C ~ 85°C - - - Through Hole 0.827" L x 0.118" W (21.00mm x 3.00mm) 0.980" (24.90mm) - 0.400" (10.15mm)
2920L600/16MR

2920L600/16MR

PTC RESET FUSE 16V 6.0A 2920

Littelfuse Inc.

4,026 -
RFQ
2920L600/16MR

Datasheet

2920 (7351 Metric), Concave POLY-FUSE®, 2920L Tape & Reel (TR) Active Polymeric 16V 6 A 12 A 40 A 2 s 4 mOhms 20 mOhms - -40°C ~ 85°C - - - Surface Mount 0.290" L x 0.202" W (7.36mm x 5.12mm) - 0.063" (1.60mm) -
MF-R250-2

MF-R250-2

PTC RESET FUSE 30V 2.5A RADIAL

Bourns Inc.

2,505 -
RFQ
MF-R250-2

Datasheet

Radial, Disc Multifuse®, MF-R Tape & Reel (TR) 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)
30R400UF

30R400UF

PTC RESET FUSE 30V 4A RADIAL

Littelfuse Inc.

1,921 -
RFQ
30R400UF

Datasheet

Radial, Disc POLY-FUSE®, 30R Bulk Active Polymeric 30V 4 A 8 A 40 A 12.7 s 10 mOhms 50 mOhms - -40°C ~ 85°C - - - Through Hole 0.551" L x 0.118" W (14.00mm x 3.00mm) 0.866" (22.00mm) - 0.201" (5.10mm)
0ZRP0500FF2A

0ZRP0500FF2A

PTC RESET FUSE 60V 5A RADIAL

Bel Fuse Inc.

21,862 -
RFQ
0ZRP0500FF2A

Datasheet

Radial, Disc 0ZRP Tape & Reel (TR) Active Polymeric 60V 5 A 10 A 40 A 28 s 12 mOhms 50 mOhms - -40°C ~ 85°C Automotive AEC-Q200 - Through Hole 0.949" L x 0.118" W (24.10mm x 3.00mm) 1.142" (29.00mm) - 0.402" (10.20mm)
B59980C0120A070

B59980C0120A070

PTC RESET FUSE 80V 85MA RADIAL

EPCOS - TDK Electronics

14,964 -
RFQ
B59980C0120A070

Datasheet

Radial, Disc B59980 Bulk Active Ceramic 80V 85 mA 170 mA 1 A - - - 25 Ohms -40°C ~ 125°C - - - Through Hole 0.256" Dia x 0.138" T (6.50mm x 3.50mm) 0.394" (10.00mm) - 0.197" (5.00mm)
PTCTL4MR500SBE

PTCTL4MR500SBE

PTC RESET FUSE 600V 50MA RADIAL

Vishay Beyschlag/Draloric/BC Components

9,827 -
RFQ
PTCTL4MR500SBE

Datasheet

Radial, Disc - Bulk Active Ceramic 600V 50 mA 140 mA 1 A 1 s - - 50 Ohms 0°C ~ 70°C - - - Through Hole 0.315" Dia x 0.157" T (8.00mm x 4.00mm) 0.453" (11.50mm) - 0.197" (5.00mm)
30R300UPR

30R300UPR

PTC RESET FUSE 30V 3A RADIAL

Littelfuse Inc.

3,828 -
RFQ
30R300UPR

Datasheet

Radial, Disc POLY-FUSE®, 30R Cut Tape (CT) Active Polymeric 30V 3 A 6 A 40 A 10.8 s 20 mOhms 80 mOhms - -40°C ~ 85°C - - - Through Hole 0.449" L x 0.118" W (11.40mm x 3.00mm) 0.756" (19.20mm) - 0.201" (5.10mm)
0603L008YR

0603L008YR

POLYSWITCH RESETTABLE PPTC

Littelfuse Inc.

3,782 -
RFQ
0603L008YR

Datasheet

0603 (1608 Metric), Concave POLY-FUSE®, 0603L Tape & Reel (TR) Active Polymeric 15V 80 mA 200 mA 40 A 1 s 2.5 Ohms 12 Ohms - -40°C ~ 85°C - - - Surface Mount 0.063" L x 0.031" W (1.60mm x 0.80mm) - 0.024" (0.60mm) -
250S130-RADR

250S130-RADR

PTC RESET FUSE 60V 130MA 2SMD

Littelfuse Inc.

3,538 -
RFQ
250S130-RADR

Datasheet

2-SMD POLY-FUSE®, 250S Tape & Reel (TR) Active Polymeric 60V (250V Int) 130 mA 260 mA 3 A 1.4 s 6.5 Ohms 15 Ohms - -40°C ~ 85°C - - - Surface Mount 0.370" L x 0.291" W (9.40mm x 7.40mm) - 0.146" (3.70mm) -
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