MINISMD050-2

$0.55

Description：PTC RESET FUSE 500MA 1812
Series：PolySwitch®
Mfr：Littelfuse Inc.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:08859cbf769b Category: PTC Resettable Fuses Brand: Littelfuse Inc.

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Product introduction

Product Detailed Parameters

Description：PTC RESET FUSE 500MA 1812
Series：PolySwitch®
Mfr：Littelfuse Inc.
Package：Tape & Reel (TR),Cut Tape (CT)
Type：-
Voltage - Max：-
Current - Hold (Ih) (Max)：500 mA
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：Surface Mount
Package / Case：1812 (4532 Metric), Concave
Size / Dimension：0.179" L x 0.128" W (4.55mm x 3.24mm)
Height - Seated (Max)：-
Thickness (Max)：0.024" (0.62mm)
Lead Spacing：-

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MINISMD050-2

Overview

The Littelfuse MINISMD050-2 is a PolySwitch resettable PPTC fuse in the miniSMD series. It features a 24 VDC maximum voltage rating and a 0.5 A hold current. The trip current is 1 A with a typical trip time of 0.15 s. Maximum fault current is 100 A. Resistance ranges from 0.15 Ω minimum to 1 Ω maximum. Power dissipation is 0.8 W. Operating temperature spans -40°C to +85°C. Dimensions are 4.73 mm length, 3.41 mm width, and 0.62 mm height.

Feature Summary

Provides automatic overcurrent protection by increasing resistance upon heating
Surface-mount design enables direct PCB integration for space-constrained layouts
Resettable functionality restores circuit continuity after fault clearance

Applications

Portable electronic devices
Battery packs
Peripheral equipment

Procurement Notes

Verify component authenticity through authorized Littelfuse distributors or certified suppliers. Confirm RoHS compliance status and moisture sensitivity level (MSL) ratings prior to assembly. Ensure storage conditions meet humidity requirements to maintain solderability and electrical performance integrity during manufacturing processes.

Selection Notes

Select this component when circuit protection requires a compact surface-mount form factor with specific low-voltage constraints. The 24 VDC rating and 0.5 A hold current define the operational boundary. Evaluate thermal management needs against the 0.8 W power dissipation limit and ensure the package dimensions fit the available board real estate.

Part Context

This device belongs to the miniSMD series of Polymer Positive Temperature Coefficient (PPTC) resettable fuses. These components utilize polymer technology to provide reliable circuit protection in modern electronics where traditional fuses are impractical due to size or replacement requirements.