RXEF185

$0.61

Description：PTC RESET FUSE 72V 1.85A RADIAL
Series：PolySwitch®, RXEF
Mfr：Littelfuse Inc.
Package：Bag

SKU:e8843a49d287 Category: PTC Resettable Fuses Brand: Littelfuse Inc.

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Product introduction

RXEF185 is listed in the Ptc Resettable Fuses range at ChipApex. The manufacturer field lists Littelfuse Inc.. Its product description is PTC RESET FUSE 72V 1.85A RADIAL. Review the specifications below when checking this part for your BOM.

Ptc Resettable Fuses specifications for RXEF185

Description：PTC RESET FUSE 72V 1.85A RADIAL
Series：PolySwitch®, RXEF
Mfr：Littelfuse Inc.
Package：Bag
Type：Polymeric
Voltage - Max：72V
Current - Hold (Ih) (Max)：1.85 A
Current - Trip (It)：3.7 A
Current - Max：40 A
Time to Trip：12.6 s
Resistance - Initial (Ri) (Min)：80 mOhms
Resistance - Post Trip (R1) (Max)：190 mOhms
Operating Temperature：-40°C ~ 85°C
Ratings：-
Mounting Type：Through Hole
Package / Case：Radial, Disc
Size / Dimension：0.689" Dia x 0.118" T (17.50mm x 3.00mm)
Height - Seated (Max)：0.882" (22.40mm)
Thickness (Max)：-
Lead Spacing：0.199" (5.05mm)

Ptc Resettable Fuses datasheet and documents for RXEF185

RXEF185

Ptc Resettable Fuses Overview

The Littelfuse RXEF185 is a PolySwitch radial-leaded polymer PTC resettable fuse designed for overcurrent protection. It features a hold current of 1.85 A and a trip current of 3.7 A, with a maximum voltage rating of 60 VDC. The device has a maximum interrupting current of 40 A and an initial resistance of 80 mOhms minimum. It operates within a temperature range of -40°C to +85°C and utilizes a radial leaded package.

Ptc Resettable Fuses Feature Summary

Resettable polymer PTC technology provides automatic circuit recovery after fault conditions clear
Radial leaded form factor enables compatibility with high-volume electronics assembly processes
Meets multiple international safety agency approvals including UL, CSA, TUV, and CQC

Ptc Resettable Fuses Applications

Satellite video receivers
Industrial controls
Computer motherboards
Modems
USB hubs, ports and peripherals

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix (e.g., K or AP) when ordering, as it determines packaging format such as bulk or tape-and-reel. Confirm that the 60V rating aligns with system requirements, noting that similar models in the series may support higher voltages like 72V. Ensure the radial lead spacing matches the target PCB footprint before finalizing procurement.

Ptc Resettable Fuses Selection Notes

Select this component for circuits requiring resettable protection at 1.85A with a 60V limit. Compare against the RXEF185K variant if a 72V rating is necessary. Consider the RKEF series for applications needing higher hold currents up to 5A. Verify thermal derating requirements at elevated ambient temperatures near the 85°C maximum.

Ptc Resettable Fuses Part Context

The RXEF185 belongs to the Littelfuse PolySwitch RXEF series, which offers a comprehensive range of radial-leaded PPTC devices. This series is characterized by wide form factor options and compliance with RoHS, lead-free, and halogen-free standards. It serves as a standard solution for balancing voltage ratings and hold currents in consumer and industrial electronics.