MF-RHT450-0-14

$0.33

Description：PTC 4.5A 16V RADIAL LEADED HI-TE
Series：Multifuse®, MF-RHT
Mfr：Bourns Inc.
Package：Bulk

SKU:9370d7c6ed38 Category: PTC Resettable Fuses Brand: Bourns Inc.

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Product introduction

Product Detailed Parameters

Description：PTC 4.5A 16V RADIAL LEADED HI-TE
Series：Multifuse®, MF-RHT
Mfr：Bourns Inc.
Package：Bulk
Type：Polymeric
Voltage - Max：16V
Current - Hold (Ih) (Max)：4.5 A
Current - Trip (It)：7.8 A
Current - Max：100 A
Time to Trip：3 s
Resistance - Initial (Ri) (Min)：22 mOhms
Resistance - Post Trip (R1) (Max)：54 mOhms
Operating Temperature：-40°C ~ 125°C
Grade：Automotive
Qualification：AEC-Q200
Ratings：-
Mounting Type：Through Hole
Package / Case：Radial, Disc
Size / Dimension：0.409" L x 0.118" W (10.40mm x 3.00mm)
Height - Seated (Max)：0.614" (15.60mm)
Thickness (Max)：-
Lead Spacing：0.201" (5.10mm)

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MF-RHT450-0-14

Overview

The Bourns MF-RHT450-0-14 is a polymeric positive temperature coefficient (PPTC) resettable fuse designed for high-temperature circuit protection. It features a radial leaded disc package with a lead spacing of 0.201 inches (5.10mm). The component has a rated voltage of 16V and a hold current of 4.5A, with a maximum trip current of 100A. Initial resistance is at least 22 mOhms, while post-trip resistance is maximized at 54 mOhms. It operates within a temperature range of -40°C to 125°C and complies with AEC-Q200 automotive standards.

Feature Summary

Provides overcurrent and overtemperature protection through automatic reset functionality without manual intervention.
Constructed from polymeric materials to withstand high-temperature environments up to 125°C.
Features a compact radial disc package suitable for space-constrained printed circuit board layouts.

Applications

Automotive electronic circuits requiring AEC-Q200 compliance
Consumer electronics power input protection
Industrial control system circuit safeguarding

Procurement Notes

Verify the specific suffix '-14' against official Bourns documentation to confirm tape-and-reel packaging or specific marking requirements. Ensure the procurement order matches the exact part number to avoid confusion with standard bulk variants. Confirm that the supplier provides traceability data consistent with automotive grade components.

Selection Notes

Select this component when applications demand high-temperature resilience and low initial resistance for efficient power delivery. The 16V rating suits low-voltage DC systems. Engineers should verify that the expected fault currents remain below the 100A maximum limit to ensure proper device operation and safety margins in the target circuit design.

Part Context

This part belongs to the Bourns MF-RHT series of high-temperature PPTC resettable fuses. The series is engineered for demanding environments where standard polymeric devices might fail due to thermal stress. The MF-RHT line complements Bourns' broader portfolio of circuit protection solutions, offering reliable performance in automotive and industrial sectors.

Replacement Considerations

Direct substitutes include other Bourns MF-RHT series parts with matching electrical ratings. Verify lead spacing and package dimensions before replacing with generic equivalents. Cross-reference datasheets to ensure compatibility with existing PCB footprints and thermal management requirements.