RUEF185S

$0.47

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

SKU:bf68ff5931a1 Category: PTC Resettable Fuses Brand: Littelfuse Inc.

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Product introduction

RUEF185S 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 RUEF185S

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 RUEF185S

RUEF185S

Ptc Resettable Fuses Overview

The Littelfuse RUEF185S is a PolySwitch radial-leaded PPTC resettable fuse designed for PCB mounting. It features a hold current of 1.85 A and a trip current of 3.7 A, with a maximum voltage rating of 30 VDC. The device has a maximum fault current rating of 100 A and an initial resistance of 90 mOhms. It operates within a temperature range of -40°C to +85°C. Physical dimensions include a length of 15.7 mm, width of 10.2 mm, and height of 3 mm, with a lead spacing of 5.8 mm. Power dissipation is rated at 1 W.

Ptc Resettable Fuses Feature Summary

Provides overcurrent protection through automatic resistance increase upon heating
Radial leaded form factor suitable for printed circuit board integration
Resettable functionality allows recovery after fault condition removal

Ptc Resettable Fuses Applications

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

Ptc Resettable Fuses Procurement Notes

Verify the specific ordering suffix 'S' against the manufacturer's official datasheet to confirm bulk packaging specifications. Ensure the component meets RoHS compliance requirements for the intended assembly process. Cross-reference the Littelfuse part number with authorized distributor catalogs to validate current availability and manufacturing status before finalizing procurement plans.

Ptc Resettable Fuses Selection Notes

Select this component when circuit protection is required for low-voltage applications up to 30 VDC. The 1.85 A hold current suits circuits operating near this threshold. Verify that the 100 A maximum fault current rating exceeds potential short-circuit levels in the target system. Confirm that the radial leaded package fits the available PCB footprint and assembly constraints.

Ptc Resettable Fuses Part Context

The RUEF185S belongs to the Littelfuse RUEF series of PolySwitch resettable fuses. This series offers radial-leaded devices balancing voltage ratings and hold currents. These components are solid-state protection devices that raise resistance as they heat to limit current flow, providing reliable overcurrent protection for electronic circuits.