MICROSMD450LR-C-2

$0.30

Description：PTC RESET FUSE 12V 4.5A 1206
Series：PolySwitch®, LoRho
Mfr：Littelfuse Inc.
Package：Tape & Reel (TR)

SKU:d49e292a9112 Category: PTC Resettable Fuses Brand: Littelfuse Inc.

Consult the customer manager about the wholesale price.

consultation hotline：86-132-6715-2157

email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.

Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.

Product introduction

Product Detailed Parameters

Description：PTC RESET FUSE 12V 4.5A 1206
Series：PolySwitch®, LoRho
Mfr：Littelfuse Inc.
Package：Tape & Reel (TR)
Type：Polymeric
Voltage - Max：12V
Current - Hold (Ih) (Max)：4.5 A
Current - Trip (It)：9:00 AM
Current - Max：10:00 AM
Time to Trip：20 s
Resistance - Initial (Ri) (Min)：2 mOhms
Resistance - Post Trip (R1) (Max)：10 mOhms
Resistance - 25°C (Typ)：-
Operating Temperature：-20°C ~ 85°C
Grade：-
Qualification：-
Ratings：-
Mounting Type：Surface Mount
Package / Case：1210 (3225 Metric), Concave
Size / Dimension：0.127" L x 0.101" W (3.22mm x 2.58mm)
Height - Seated (Max)：-
Thickness (Max)：0.032" (0.80mm)
Lead Spacing：-

Download product information

MICROSMD450LR-C-2

Overview

The MICROSMD450LR-C-2 is a polymeric PTC resettable fuse manufactured by Littelfuse Inc. It features a hold current (Ih) of 4.5 A and a trip current (It) of 9 A, rated for a maximum voltage of 12 V. The component utilizes a surface-mount package with dimensions of 3.22 mm x 2.58 mm (1210 metric). Maximum thickness is 1.00 mm. It is RoHS compliant and lead-free.

Feature Summary

Polymeric positive temperature coefficient technology for overcurrent protection
Surface-mount design suitable for automated assembly processes
RoHS compliant construction without lead or mercury

Applications

Portable electronic device circuit protection
Battery pack safeguarding
Low-voltage consumer electronics interfaces

Procurement Notes

Verify the specific datasheet revision SCD29116 Rev A when sourcing components to ensure alignment with manufacturing standards. Confirm RoHS compliance status through official Littelfuse documentation rather than distributor summaries. Cross-reference the part number MICROSMD450LR-C-2 with its series identifier RF2515-000 for accurate inventory tracking and technical specification validation during procurement.

Selection Notes

Select this component for applications requiring a 12 V rating and 4.5 A hold current in a compact 1210 footprint. Ensure the operating environment supports the thermal characteristics of polymeric PTC devices. Verify that the 9 A trip current aligns with the system's fault tolerance requirements before integration into the final design.

Part Context

This part belongs to the microSMD family of resettable fuses from Littelfuse Inc., designed for space-constrained electronics. The series provides reliable overcurrent protection in a small surface-mount form factor. The specific model integrates standard polymeric materials optimized for low resistance and fast response times in portable applications.