RUEF185-1

$0.50

Description：PTC RESET FUSE 30V 1.85A RADIAL
Series：PolySwitch®, RUEF
Mfr：Littelfuse Inc.
Package：Bag

SKU:0003a2b5b83d Category: PTC Resettable Fuses Brand: Littelfuse Inc.

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Product introduction

RUEF185-1 is listed in the Ptc Resettable Fuses range at ChipApex. The manufacturer field lists Littelfuse Inc.. Its product description is PTC RESET FUSE 30V 1.85A RADIAL. Review the specifications below when checking this part for your BOM.

Ptc Resettable Fuses specifications for RUEF185-1

Description：PTC RESET FUSE 30V 1.85A RADIAL
Series：PolySwitch®, RUEF
Mfr：Littelfuse Inc.
Package：Bag
Type：Polymeric
Voltage - Max：30V
Current - Hold (Ih) (Max)：1.85 A
Current - Trip (It)：3.7 A
Current - Max：100 A
Time to Trip：8.7 s
Resistance - Initial (Ri) (Min)：30 mOhms
Resistance - Post Trip (R1) (Max)：90 mOhms
Operating Temperature：-40°C ~ 85°C
Ratings：-
Mounting Type：Through Hole
Package / Case：Radial, Disc
Size / Dimension：0.402" Dia x 0.118" T (10.20mm x 3.00mm)
Height - Seated (Max)：0.618" (15.70mm)
Thickness (Max)：-
Lead Spacing：0.199" (5.05mm)

Ptc Resettable Fuses datasheet and documents for RUEF185-1

RUEF185-1

Ptc Resettable Fuses Overview

The Littelfuse RUEF185-1 is a PolySwitch resettable PTC fuse designed for PCB mounting with radial termination. It features a hold current of 1.85 A and a trip current of 3.7 A, operating at a maximum voltage of 30 VDC. The device has a maximum fault current rating of 100 A and a typical resistance of 90 mOhms. Physical dimensions are 15.7 mm in length, 10.2 mm in width, and 3 mm in height, with a lead spacing of 5.8 mm. It operates within a temperature range of -40°C to +85°C and dissipates 1 W of power.

Ptc Resettable Fuses Feature Summary

Provides automatic circuit protection through self-resetting polymer technology
Offers high fault current interruption capability up to 100 A
Features compact radial leaded package suitable for surface mount applications

Ptc Resettable Fuses Applications

Overcurrent protection in portable electronic devices
Protection circuits for telecommunications equipment
Circuit safeguarding in automotive electronics

Ptc Resettable Fuses Procurement Notes

Verify the specific ordering suffix matches the required packaging configuration, as variations exist between reel and cut tape formats. Confirm that the component meets RoHS compliance requirements for your assembly process. Ensure the supplier provides valid Littelfuse documentation to guarantee authenticity and traceability of the PolySwitch series device.

Ptc Resettable Fuses Selection Notes

Select this component when a 1.85 A hold current and 30 VDC rating align with system requirements. Consider the 90 mOhms resistance impact on power loss during normal operation. Evaluate the 100 A Imax rating against potential short-circuit conditions to ensure adequate safety margins for the target application environment.

Ptc Resettable Fuses Part Context

This part belongs to the RUEF series of PolySwitch resettable fuses from Littelfuse. It shares similar electrical characteristics with the RUEF185-2 but may differ in packaging or minor physical attributes. The series is designed for general-purpose overcurrent protection in low-voltage DC circuits requiring reliable, reusable safety components.