RUEF500-2

$0.85

Description：PTC RESET FUSE 30V 5A RADIAL
Series：PolySwitch®, RUEF
Mfr：Littelfuse Inc.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:e27960d1b317 Category: PTC Resettable Fuses Brand: Littelfuse Inc.

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Product introduction

RUEF500-2 is listed in the Ptc Resettable Fuses range at ChipApex. The manufacturer field lists Littelfuse Inc.. Its product description is PTC RESET FUSE 30V 5A RADIAL. Review the specifications below when checking this part for your BOM.

Ptc Resettable Fuses specifications for RUEF500-2

Description：PTC RESET FUSE 30V 5A RADIAL
Series：PolySwitch®, RUEF
Mfr：Littelfuse Inc.
Package：Tape & Reel (TR),Cut Tape (CT)
Type：Polymeric
Voltage - Max：30V
Current - Hold (Ih) (Max)：5:00 AM
Current - Trip (It)：10:00 AM
Current - Max：100 A
Time to Trip：14.5 s
Resistance - Initial (Ri) (Min)：10 mOhms
Resistance - Post Trip (R1) (Max)：50 mOhms
Operating Temperature：-40°C ~ 85°C
Ratings：-
Mounting Type：Through Hole
Package / Case：Radial, Disc
Size / Dimension：0.551" L x 0.120" W (14.00mm x 3.00mm)
Height - Seated (Max)：0.949" (24.10mm)
Thickness (Max)：-
Lead Spacing：0.400" (10.15mm)

Ptc Resettable Fuses datasheet and documents for RUEF500-2

RUEF500-2

Ptc Resettable Fuses Overview

The Littelfuse RUEF500-2 is a PolySwitch PTC resettable fuse from the RUEF series, designed for through-hole mounting. It features a maximum voltage of 30V and a hold current (Ih) of 5A. The trip current (It) is specified at 10A, with a maximum fault current rating of 100A. Initial resistance (Ri) is typically 10 mOhms, while post-trip resistance (R1) has a maximum value of 50 mOhms. The device trips within 14.5 seconds under fault conditions. Operating temperature ranges from -40°C to 85°C. Physical dimensions are 14.00mm length, 3.00mm width, and 24.10mm height, with a lead spacing of 10.15mm.

Ptc Resettable Fuses Feature Summary

Provides automatic circuit protection by increasing resistance significantly upon overcurrent or overheating events.
Offers reusable functionality by resetting to low resistance state after power removal and cooling.
Supports radial through-hole installation for direct PCB integration.

Ptc Resettable Fuses Applications

Overcurrent protection in portable electronic devices
Circuit safeguarding in telecommunications equipment
Protection for peripheral interfaces and data lines

Ptc Resettable Fuses Procurement Notes

Verify component authenticity against Littelfuse official documentation before deployment. Confirm that the specific suffix '-2' corresponds to the required packaging format, such as tape and reel or cut tape, as indicated in distributor catalogs. Ensure compliance with RoHS3 standards and relevant safety certifications like UL, CSA, TUV, and CQC for the target market. Cross-reference datasheet parameters with system requirements to validate thermal and electrical performance margins.

Ptc Resettable Fuses Selection Notes

Select this component when a 5A hold current and 30V maximum voltage rating align with the circuit design. Consider the 10A trip threshold and 14.5-second trip time for appropriate fault response characteristics. Evaluate the 10 mOhms initial resistance for minimal impact on normal operation. Verify that the radial package and 10.15mm lead spacing fit the printed circuit board layout constraints.

Ptc Resettable Fuses Part Context

This part belongs to the Littelfuse RUEF series of polymer PTC resettable fuses. These components are engineered for high-reliability circuit protection applications requiring reusable overcurrent safeguards. The series offers various current ratings and package options to accommodate diverse electronic design needs across industrial and consumer sectors.

Ptc Resettable Fuses Replacement Considerations

Consult Littelfuse official substitution guides for verified equivalents. Ensure any replacement maintains identical voltage, current, and physical footprint specifications to guarantee functional compatibility without redesigning the host circuitry.