MF-RHT450-AP

$0.33

Description：PTC RESET FUSE 16V 4.5A RADIAL
Series：Multifuse®, MF-RHT
Mfr：Bourns Inc.
Package：Tape & Box (TB)

SKU:75a79fbce947 Category: PTC Resettable Fuses Brand: Bourns Inc.

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Product introduction

Product Detailed Parameters

Description：PTC RESET FUSE 16V 4.5A RADIAL
Series：Multifuse®, MF-RHT
Mfr：Bourns Inc.
Package：Tape & Box (TB)
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：0.114" (2.90mm)

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MF-RHT450-AP

Overview

The MF-RHT450-AP is a polymeric PTC resettable fuse from the Multifuse MF-RHT series, designed for through-hole radial mounting. It features a maximum voltage rating of 16 V and a hold current of 4.5 A. The device trips at 7.8 A and supports a maximum fault current of 100 A. Initial resistance is specified at 54 mOhms (0.022 Ohm per some sources), with a power dissipation of 3.6 W in trip mode. Dimensions are 10.4 x 3 x 15.6 mm. It meets AEC-Q200 automotive qualification standards.

Feature Summary

Polymeric positive temperature coefficient construction for overcurrent protection
Radial leaded package suitable for through-hole PCB mounting
Automotive-grade reliability certified under AEC-Q200 standards
Self-resetting functionality eliminates need for manual replacement after fault clearance

Applications

Automotive electronic circuit protection
Battery pack overcurrent safeguarding
Power supply input protection
Signal line surge suppression

Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm axial/radial orientation and lead finish compatibility with assembly processes. Ensure storage conditions maintain material integrity prior to installation. Cross-reference ordering codes with distributor catalogs to avoid variant mismatches.

Selection Notes

Select based on hold current requirements relative to normal operating load. Verify maximum system voltage does not exceed 16 V rating. Assess peak fault current capability against potential short-circuit scenarios. Consider thermal environment impact on trip characteristics and power dissipation limits during sustained overload conditions.

Part Context

Part of Bourns' Multifuse MF-RHT series, this component provides reusable overcurrent protection. It replaces traditional fusible links in applications requiring automatic recovery. The radial disc form factor facilitates automated insertion into printed circuit boards.