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-RX110

MF-RX110

PTC RESET FUSE 60V 1.1A RADIAL

Bourns Inc.

8,856 -
RFQ
MF-RX110

Datasheet

Radial, Disc Multifuse®, MF-RX Bulk Obsolete Polymeric 60V 1.1 A 2.2 A 40 A 8.2 s 150 mOhms 380 mOhms - -40°C ~ 85°C - - - Through Hole 0.427" L x 0.122" W (10.84mm x 3.10mm) 0.662" (16.84mm) - 0.201" (5.10mm)
MF-RX135

MF-RX135

PTC RESET FUSE 60V 1.35A RADIAL

Bourns Inc.

6,188 -
RFQ
MF-RX135

Datasheet

Radial, Disc Multifuse®, MF-RX Bulk Obsolete Polymeric 60V 1.35 A 2.7 A 40 A 9.6 s 120 mOhms 300 mOhms - -40°C ~ 85°C - - - Through Hole 0.483" L x 0.122" W (12.26mm x 3.10mm) 0.718" (18.26mm) - 0.201" (5.10mm)
MF-RX160

MF-RX160

PTC RESET FUSE 60V 1.6A RADIAL

Bourns Inc.

2,371 -
RFQ
MF-RX160

Datasheet

Radial, Disc Multifuse®, MF-RX Bulk Obsolete Polymeric 60V 1.6 A 3.2 A 40 A 11.4 s 90 mOhms 220 mOhms - -40°C ~ 85°C - - - Through Hole 0.642" L x 0.122" W (16.30mm x 3.10mm) 0.839" (21.30mm) - 0.201" (5.10mm)
MF-RX185

MF-RX185

PTC RESET FUSE 60V 1.85A RADIAL

Bourns Inc.

7,292 -
RFQ
MF-RX185

Datasheet

Radial, Disc Multifuse®, MF-RX Bulk Obsolete Polymeric 60V 1.85 A 3.7 A 40 A 12.6 s 80 mOhms 190 mOhms - -40°C ~ 85°C - - - Through Hole 0.701" L x 0.122" W (17.80mm x 3.10mm) 0.902" (22.90mm) - 0.201" (5.10mm)
MF-RX250

MF-RX250

PTC RESET FUSE 60V 2.5A RADIAL

Bourns Inc.

3,349 -
RFQ
MF-RX250

Datasheet

Radial, Disc Multifuse®, MF-RX Bulk Obsolete Polymeric 60V 2.5 A 5 A 40 A 15.6 s 50 mOhms 130 mOhms - -40°C ~ 85°C - - - Through Hole 0.839" L x 0.122" W (21.30mm x 3.10mm) 1.039" (26.40mm) - 0.402" (10.20mm)
MF-RX300

MF-RX300

PTC RESET FUSE 60V 3A RADIAL

Bourns Inc.

8,869 -
RFQ
MF-RX300

Datasheet

Radial, Disc Multifuse®, MF-RX Bulk Obsolete Polymeric 60V 3 A 6 A 40 A 19.8 s 40 mOhms 100 mOhms - -40°C ~ 85°C - - - Through Hole 0.980" L x 0.122" W (24.90mm x 3.10mm) 1.181" (30.00mm) - 0.402" (10.20mm)
MF-RX375

MF-RX375

PTC RESET FUSE 60V 3.75A RADIAL

Bourns Inc.

8,300 -
RFQ
MF-RX375

Datasheet

Radial, Disc Multifuse®, MF-RX Bulk Obsolete Polymeric 60V 3.75 A 7.5 A 40 A 24 s 30 mOhms 80 mOhms - -40°C ~ 85°C - - - Through Hole 1.118" L x 0.122" W (28.40mm x 3.10mm) 1.319" (33.50mm) - 0.402" (10.20mm)
RGE300

RGE300

PTC RESET FUSE 16V 3A RADIAL

Littelfuse Inc.

4,891 -
RFQ

-

Radial, Disc PolySwitch® Bulk Obsolete Polymeric 16V 3 A 5.1 A 100 A 1 s 38 mOhms - - - - - - Through Hole 0.260" L x 0.098" W (6.60mm x 2.50mm) 0.433" (11.00mm) - 0.199" (5.05mm)
RGE500

RGE500

PTC RESET FUSE 16V 5A RADIAL

Littelfuse Inc.

5,556 -
RFQ

-

Radial, Disc PolySwitch® Bulk Obsolete Polymeric 16V 5 A 8.5 A 100 A 2 s 15 mOhms 34 mOhms - - - - - Through Hole 0.390" L x 0.098" W (9.90mm x 2.50mm) 0.563" (14.30mm) - 0.199" (5.05mm)
RGE700

RGE700

PTC RESET FUSE 16V 7A RADIAL

Littelfuse Inc.

3,110 -
RFQ

-

Radial, Disc PolySwitch® Bulk Obsolete Polymeric 16V 7 A 11.9 A 100 A 3.5 s 8 mOhms 20 mOhms - - - - - Through Hole 0.441" L x 0.118" W (11.20mm x 3.00mm) 0.776" (19.70mm) - 0.201" (5.10mm)
RGE900

RGE900

PTC RESET FUSE 16V 9A RADIAL

Littelfuse Inc.

4,880 -
RFQ

-

Radial, Disc PolySwitch® Bulk Obsolete Polymeric 16V 9 A 15.3 A 100 A 5.5 s 5 mOhms 14 mOhms - - - - - Through Hole 0.530" L x 0.100" W (13.50mm x 2.50mm) 0.854" (21.70mm) - 0.199" (5.05mm)
RGE1100

RGE1100

PTC RESET FUSE 16V 11A RADIAL

Littelfuse Inc.

5,071 -
RFQ
RGE1100

Datasheet

Radial, Disc PolySwitch® Bulk Obsolete Polymeric 16V 11 A 18.7 A 100 A 7 s 3.7 mOhms 8.9 mOhms - - - - - Through Hole 0.669" L x 0.098" W (17.00mm x 2.50mm) 1.024" (26.00mm) - 0.199" (5.05mm)
TR250-080U

TR250-080U

PTC RESET FUSE 250V 80MA RADIAL

Littelfuse Inc.

8,714 -
RFQ
TR250-080U

Datasheet

Radial, Disc PolySwitch® Bulk Obsolete Polymeric 250V (60V Int) 80 mA - 3 A 3 s 14 Ohms 33 Ohms - -40°C ~ 85°C - - - Through Hole 0.189" Dia x 0.150" T (4.80mm x 3.80mm) 0.366" (9.30mm) - 0.197" (5.00mm)
RXE110-1

RXE110-1

PTC RESET FUSE 72V 1.1A RADIAL

Littelfuse Inc.

2,359 -
RFQ
RXE110-1

Datasheet

Radial, Disc PolySwitch®, RXE Bulk Obsolete Polymeric 72V 1.1 A 2.2 A 40 A 8.2 s 150 mOhms 380 mOhms - - - - - Through Hole 0.504" Dia x 0.118" T (12.80mm x 3.00mm) 0.689" (17.50mm) - 0.199" (5.05mm)
RUSB075

RUSB075

PTC RESET FUSE 6V 750MA RADIAL

Littelfuse Inc.

7,653 -
RFQ
RUSB075

Datasheet

Radial, Disc PolySwitch® Bulk Obsolete Polymeric 6V 750 mA 1.3 A 40 A 400 ms 110 mOhms 230 mOhms - - - - - Through Hole 0.272" L x 0.118" W (6.90mm x 3.00mm) 0.449" (11.40mm) - 0.201" (5.10mm)
RUSB090

RUSB090

PTC RESET FUSE 16V 900MA RADIAL

Littelfuse Inc.

5,190 -
RFQ
RUSB090

Datasheet

Radial, Disc PolySwitch® Bulk Obsolete Polymeric 16V 900 mA 1.8 A 40 A 1.2 s 70 mOhms 180 mOhms - - - - - Through Hole 0.291" L x 0.118" W (7.40mm x 3.00mm) 0.480" (12.20mm) - 0.199" (5.05mm)
RUSB120

RUSB120

PTC RESET FUSE 6V 1.2A RADIAL

Littelfuse Inc.

8,991 -
RFQ
RUSB120

Datasheet

Radial, Disc PolySwitch® Bulk Obsolete Polymeric 6V 1.2 A 2 A 40 A 500 ms 70 mOhms 140 mOhms - - - - - Through Hole 0.272" Dia x 0.122" T (6.90mm x 3.10mm) 0.461" (11.70mm) - 0.201" (5.10mm)
RUSB135

RUSB135

PTC RESET FUSE 16V 1.35A RADIAL

Littelfuse Inc.

3,383 -
RFQ
RUSB135

Datasheet

Radial, Disc PolySwitch® Bulk Obsolete Polymeric 16V 1.35 A 2.7 A 40 A 4.5 s 40 mOhms 115 mOhms - - - - - Through Hole 0.350" L x 0.118" W (8.90mm x 3.00mm) 0.532" (13.50mm) - 0.199" (5.05mm)
RUSB250

RUSB250

PTC RESET FUSE 16V 2.5A RADIAL

Littelfuse Inc.

3,946 -
RFQ
RUSB250

Datasheet

Radial, Disc PolySwitch® Bulk Obsolete Polymeric 16V 2.5 A 5 A 40 A 40 s 20 mOhms 60 mOhms - - - - - Through Hole 0.449" L x 0.118" W (11.40mm x 3.00mm) 0.720" (18.30mm) - 0.199" (5.05mm)
RGE1400

RGE1400

PTC RESET FUSE 16V 14A RADIAL

Littelfuse Inc.

7,578 -
RFQ

-

Radial, Disc PolySwitch® Bulk Obsolete Polymeric 16V 14 A 23.8 A 100 A 9 s 2.6 mOhms 6.4 mOhms - - - - - Through Hole 0.904" L x 0.114" W (22.96mm x 2.90mm) 1.102" (28.00mm) - 0.400" (10.15mm)
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