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-RHT800-2

MF-RHT800-2

PTC RESET FUSE 16V 8A RADIAL

Bourns Inc.

1,950 -
RFQ
MF-RHT800-2

Datasheet

Radial, Disc Multifuse®, MF-RHT Tape & Reel (TR) Active Polymeric 16V 8 A 15 A 100 A 8 s 8 mOhms 20 mOhms - -40°C ~ 125°C Automotive AEC-Q200 - Through Hole 0.630" L x 0.118" W (16.00mm x 3.00mm) 0.886" (22.50mm) - 0.201" (5.10mm)
AHRL350

AHRL350

PTC RESET FUSE 3.5A 16V RAD

Littelfuse Inc.

332 -
RFQ
AHRL350

Datasheet

Radial, Disc PolySwitch®, AHRL Bulk Active Polymeric 16V 3.5 A 7 A 50 A 4.5 s 18 mOhms 32 mOhms - -40°C ~ 125°C Automotive AEC-Q200 - Through Hole 0.331" L x 0.118" W (8.40mm x 3.00mm) 0.488" (12.40mm) - 0.199" (5.05mm)
AHRL600

AHRL600

PTC RESET FUSE 6A 16V RAD

Littelfuse Inc.

58 -
RFQ
AHRL600

Datasheet

Radial, Disc PolySwitch®, AHRL Bulk Active Polymeric 16V 6 A 13 A 50 A 6.5 s 9 mOhms 14 mOhms - -40°C ~ 125°C Automotive AEC-Q200 - Through Hole 0.344" L x 0.118" W (8.75mm x 3.00mm) 0.630" (16.00mm) - 0.199" (5.05mm)
AHRL500

AHRL500

PTC RESET FUSE 5A 16V RAD

Littelfuse Inc.

37 -
RFQ
AHRL500

Datasheet

Radial, Disc PolySwitch®, AHRL Bulk Active Polymeric 16V 5 A 10 A 50 A 5.8 s 13.5 mOhms 24 mOhms - -40°C ~ 125°C Automotive AEC-Q200 - Through Hole 0.362" L x 0.118" W (9.20mm x 3.00mm) 0.555" (14.10mm) - 0.199" (5.05mm)
RUEF600-1

RUEF600-1

PTC RESET FUSE 30V 6A RADIAL

Littelfuse Inc.

250 -
RFQ
RUEF600-1

Datasheet

Radial, Disc PolySwitch®, RUEF Bag Active Polymeric 30V 6 A 12 A 100 A 16 s 5 mOhms 40 mOhms - -40°C ~ 85°C - - - Through Hole 0.650" L x 0.118" W (16.50mm x 3.00mm) 0.949" (24.10mm) - 0.400" (10.15mm)
PTR016V1400-BK

PTR016V1400-BK

PTC RESET FUSE 16V 14A RADIAL

Eaton - Electronics Division

125 -
RFQ
PTR016V1400-BK

Datasheet

Radial, Disc PTR016V Bulk Active Polymeric 16V 14 A 23.8 A 100 A 9 s 2 mOhms 7 mOhms - -40°C ~ 85°C - - - Through Hole 0.925" L x 0.122" W (23.50mm x 3.10mm) 1.098" (27.90mm) - 0.394" (10.00mm)
MF-R250U

MF-R250U

PTC RESET FUSE 30V 2.5A RADIAL

Bourns Inc.

44 -
RFQ
MF-R250U

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 - - - Through Hole 0.472" L x 0.118" W (12.00mm x 3.00mm) 0.720" (18.30mm) - 0.201" (5.10mm)
LVR040S-1

LVR040S-1

PTC RESET FUSE 240V 400MA RADIAL

Littelfuse Inc.

850 -
RFQ
LVR040S-1

Datasheet

Radial, Disc PolySwitch®, LVR Bag 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) 0.768" (19.50mm) - 0.200" (5.08mm)
MF-RHT500-0

MF-RHT500-0

PTC RESET FUSE 16V 5A RADIAL

Bourns Inc.

808 -
RFQ
MF-RHT500-0

Datasheet

Radial, Disc Multifuse®, MF-RHT Bag Active Polymeric 16V 5 A 9 A 100 A 9 s 17.5 mOhms 45 mOhms - -40°C ~ 125°C Automotive AEC-Q200 - Through Hole 0.441" L x 0.118" W (11.20mm x 3.00mm) 0.744" (18.90mm) - 0.201" (5.10mm)
MF-RX012/250-T-2

MF-RX012/250-T-2

PTC RESET FUSE 60V 120MA RADIAL

Bourns Inc.

50 -
RFQ
MF-RX012/250-T-2

Datasheet

Radial, Disc Multifuse®, MF-RX/250 Tape & Reel (TR) Active Polymeric 60V (250V Int) 120 mA - 3 A - 7 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) - 0.201" (5.10mm)
1210L175WR

1210L175WR

PTC RESET FUSE 6V 1.75A 1210

Littelfuse Inc.

50 -
RFQ
1210L175WR

Datasheet

1210 (3225 Metric), Concave POLY-FUSE®, 1210L Tape & Reel (TR) Active Polymeric 6V 1.75 A 3.5 A 100 A 600 ms 20 mOhms 80 mOhms - -40°C ~ 85°C - - - Surface Mount 0.127" L x 0.102" W (3.22mm x 2.58mm) - 0.039" (1.00mm) -
TRF250-145T

TRF250-145T

PTC RESET FUSE 60V 145MA RADIAL

Littelfuse Inc.

480 -
RFQ
TRF250-145T

Datasheet

Radial, Disc PolySwitch®, TRF250 Bag Active Polymeric 60V (250V Int) 145 mA 290 mA 3 A 2.5 s 5.4 Ohms 14 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-RHT550-2

MF-RHT550-2

PTC RESET FUSE 16V 5.5A RADIAL

Bourns Inc.

276 -
RFQ
MF-RHT550-2

Datasheet

Radial, Disc Multifuse®, MF-RHT Tape & Reel (TR) Active Polymeric 16V 5.5 A 10 A 100 A 6 s 15 mOhms 37 mOhms - -40°C ~ 125°C Automotive AEC-Q200 - Through Hole 0.441" L x 0.118" W (11.20mm x 3.00mm) 0.744" (18.90mm) - 0.201" (5.10mm)
MF-RHT500-2

MF-RHT500-2

PTC RESET FUSE 16V 5A RADIAL

Bourns Inc.

117 -
RFQ
MF-RHT500-2

Datasheet

Radial, Disc Multifuse®, MF-RHT Tape & Reel (TR) Active Polymeric 16V 5 A 9 A 100 A 9 s 17.5 mOhms 45 mOhms - -40°C ~ 125°C Automotive AEC-Q200 - Through Hole 0.441" L x 0.118" W (11.20mm x 3.00mm) 0.744" (18.90mm) - 0.201" (5.10mm)
MF-R800-2

MF-R800-2

PTC RESET FUSE 30V 8A RADIAL

Bourns Inc.

1,205 -
RFQ
MF-R800-2

Datasheet

Radial, Disc Multifuse®, MF-R Tape & Reel (TR) Active Polymeric 30V 8 A 16 A 40 A 18.8 s 5 mOhms 30 mOhms - -40°C ~ 85°C - - - Through Hole 0.953" L x 0.118" W (24.20mm x 3.00mm) 1.295" (32.90mm) - 0.402" (10.20mm)
RUEF700K-2

RUEF700K-2

PTC RESET FUSE 30V 7A RADIAL

Littelfuse Inc.

700 -
RFQ
RUEF700K-2

Datasheet

Radial, Disc PolySwitch®, RUEF Tape & Reel (TR) Active Polymeric 30V 7 A 14 A 100 A 17.5 s 5 mOhms 30 mOhms - -40°C ~ 85°C - - - Through Hole 0.752" L x 0.118" W (19.10mm x 3.00mm) 1.091" (27.70mm) - 0.400" (10.15mm)
PTR030V0800-BK

PTR030V0800-BK

PTC RESET FUSE 30V 8A RADIAL

Eaton - Electronics Division

252 -
RFQ
PTR030V0800-BK

Datasheet

Radial, Disc PTR030V Bulk Active Polymeric 30V 8 A 16 A 100 A 18.8 s 5 mOhms 20 mOhms - -40°C ~ 85°C - - - Through Hole 0.850" L x 0.118" W (21.60mm x 3.00mm) 1.150" (29.20mm) - 0.394" (10.00mm)
MF-RG300-2

MF-RG300-2

PTC RESET FUSE 16V 3A RADIAL

Bourns Inc.

36 -
RFQ
MF-RG300-2

Datasheet

Radial, Disc Multifuse®, MF-RG Tape & Reel (TR) Active Polymeric 16V 3 A 5.1 A 100 A 1 s 38 mOhms 97.5 mOhms - -40°C ~ 85°C - - - Through Hole 0.280" L x 0.118" W (7.10mm x 3.00mm) 0.433" (11.00mm) - 0.201" (5.10mm)
RUEF800K

RUEF800K

PTC RESET FUSE 30V 8A RADIAL

Littelfuse Inc.

52 -
RFQ
RUEF800K

Datasheet

Radial, Disc PolySwitch®, RUEF Bag Active Polymeric 30V 8 A 16 A 100 A 18.8 s 5 mOhms 20 mOhms - -40°C ~ 85°C - - - Through Hole 0.850" L x 0.118" W (21.60mm x 3.00mm) 1.189" (30.20mm) - 0.400" (10.15mm)
72R110XMR

72R110XMR

PTC RESET FUSE 72V 1.1A RADIAL

Littelfuse Inc.

54 -
RFQ
72R110XMR

Datasheet

Radial, Disc POLY-FUSE®, 72R Cut Tape (CT) Active Polymeric 72V 1.1 A 2.2 A 40 A 8.2 s 150 mOhms 380 mOhms - -40°C ~ 85°C - - - Through Hole 0.512" Dia x 0.122" T (13.00mm x 3.10mm) 0.717" (18.20mm) - 0.201" (5.10mm)
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