MINISMDC050-2

$0.47

Description：PTC RESET FUSE 24V 500MA 1812
Series：PolySwitch®, miniSMD
Mfr：Littelfuse Inc.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:2f916c3cc41f Category: PTC Resettable Fuses Brand: Littelfuse Inc.

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Product introduction

Product Detailed Parameters

Description：PTC RESET FUSE 24V 500MA 1812
Series：PolySwitch®, miniSMD
Mfr：Littelfuse Inc.
Package：Tape & Reel (TR),Cut Tape (CT)
Type：Polymeric
Voltage - Max：24V
Current - Hold (Ih) (Max)：500 mA
Current - Trip (It)：-
Current - Max：100 A
Time to Trip：150 ms
Resistance - Initial (Ri) (Min)：150 mOhms
Resistance - Post Trip (R1) (Max)：1 Ohms
Resistance - 25°C (Typ)：-
Operating Temperature：-40°C ~ 85°C
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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MINISMDC050-2

Overview

The Littelfuse MINISMDC050-2 is a PolySwitch resettable PPTC fuse designed for surface mount applications. It features a 1812 (4532 metric) package with dimensions of 4.73mm length, 3.41mm width, and 0.62mm height. The device has a maximum voltage rating of 24V DC, a hold current of 0.5A, and a trip current of 1A. It offers a minimum resistance of 0.15Ω and a maximum resistance of 1Ω. The component operates within a temperature range of -40°C to +85°C, dissipates up to 0.8W, and supports a maximum fault current of 100A.

Feature Summary

Provides overcurrent and overheating protection through automatic resistance increase upon heating
Reusable design reduces the need for component replacement and maintenance
Fast tripping time ensures rapid circuit interruption during fault conditions
Low resistance minimizes power loss in normal operating states

Applications

Protection of portable electronics and handheld devices
Overcurrent protection for battery-powered circuits
Circuit safeguarding in telecommunications equipment
Protection for AC-DC and DC-DC power adapters

Procurement Notes

Verify that the specific part number matches the required electrical ratings, particularly the 24V DC voltage limit and 0.5A hold current. Confirm the package type is 1812 SMD and check for any suffix variations that may indicate different voltage or current characteristics. Ensure compatibility with standard reflow soldering processes and verify moisture sensitivity level requirements for storage and handling.

Selection Notes

Select this component when a compact, reusable overcurrent protection solution is needed for low-voltage DC circuits. The 1812 footprint suits space-constrained PCB designs. Consider the 0.15Ω minimum resistance for efficiency and the 100A interrupting rating for robust fault handling. Ensure the application environment stays within the -40°C to +85°C operating range for reliable performance.

Part Context

This device belongs to the miniSMDC series of PolySwitch resettable fuses from Littelfuse. These components are engineered for surface mount technology, offering a balance between size and protection capability. The series is widely used in consumer electronics and industrial applications where space-saving and reliability are critical factors for circuit protection strategies.