1210L450/12SLWR

$1.76

Description：PTC 12V POLYFUSE SMT 1210 SL 4.5
Series：Lo Rho
Mfr：Littelfuse Inc.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:2ca3675fc3a2 Category: PTC Resettable Fuses Brand: Littelfuse Inc.

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Product introduction

1210L450/12SLWR is listed in the Ptc Resettable Fuses range at ChipApex. The manufacturer field lists Littelfuse Inc.. Its product description is PTC 12V POLYFUSE SMT 1210 SL 4.5. Review the specifications below when checking this part for your BOM.

Ptc Resettable Fuses specifications for 1210L450/12SLWR

Description：PTC 12V POLYFUSE SMT 1210 SL 4.5
Series：Lo Rho
Mfr：Littelfuse Inc.
Package：Tape & Reel (TR),Cut Tape (CT)
Type：Polymeric
Voltage - Max：12V
Current - Hold (Ih) (Max)：4.5 A
Current - Trip (It)：9:00 AM
Current - Max：50 A
Time to Trip：2 s
Resistance - Initial (Ri) (Min)：1 mOhms
Resistance - Post Trip (R1) (Max)：14 mOhms
Resistance - 25°C (Typ)：-
Operating Temperature：-40°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)：0.055" (1.40mm)
Lead Spacing：-

Ptc Resettable Fuses datasheet and documents for 1210L450/12SLWR

1210L450/12SLWR

Ptc Resettable Fuses Overview

The Littelfuse 1210L450/12SLWR is a surface-mount PolySwitch resettable PTC device from the Low Rho series. It features a hold current of 4.5 A and a trip current of 9 A, with a maximum voltage rating of 6 VDC. The component exhibits a minimum initial resistance of 14 mΩ and a maximum post-trip resistance of 12 mΩ. It supports a maximum fault current of 50 A and operates within a temperature range of -40°C to +85°C.

Ptc Resettable Fuses Feature Summary

Provides reliable overcurrent protection through automatic resistance increase upon heating
Offers low resistance characteristics for minimal power loss in sensitive circuits
Enables circuit recovery after fault conditions without manual replacement

Ptc Resettable Fuses Applications

Protection of portable electronic devices
Overcurrent safeguarding in battery-powered equipment
Circuit protection for telecommunications hardware

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix requirements against official Littelfuse documentation to ensure correct packaging and tape-and-reel specifications. Confirm that the selected variant matches the required hold and trip current parameters for the target application. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and availability status before finalizing procurement orders.

Ptc Resettable Fuses Selection Notes

Select this component based on its 4.5 A hold current and 6 VDC rating for low-voltage applications. Ensure the 1210 footprint fits the PCB layout constraints. Consider the low resistance value to minimize voltage drop during normal operation. Verify thermal management requirements given the operating temperature range and self-heating characteristics inherent to PTC devices.

Ptc Resettable Fuses Part Context

This part belongs to the PolySwitch LoRho series, designed for surface-mount applications requiring low resistance. It serves as a solid-state alternative to traditional fuses, offering resettable functionality. The series is engineered for compact electronics where space and performance are critical factors in circuit protection design.