MF-RHT050-AP Equivalent & Substitute Parts

Part Overview

The MF-RHT050-AP is a polymeric PTC resettable fuse manufactured by Bourns Inc. in the Multifuse® MF-RHT series. This component provides overcurrent protection at 30V with a 500 mA hold current rating and is designed for through-hole radial mounting in disc configuration. The part is currently active in production with AEC-Q200 automotive qualification and full RoHS3 compliance. Substitute parts are identified when electrical parameters, mechanical dimensions, and compliance certifications remain identical across alternative part numbers within the same product series.

Substiute Parts

MF-RHT050-AP

Bourns Inc.In Stock: 1018MF-RHT050-AP Datasheet

Current PartRFQ

MF-RHT050-0

Bourns Inc.In Stock: 708MF-RHT050-0 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MF-RHT050-AP is determined by strict equivalence across the following critical parameters:

Electrical specifications: Maximum voltage (30V), hold current (500 mA), trip current (920 mA), maximum current (40 A), time to trip (2.5 s), initial resistance (480 mOhms minimum), and post-trip resistance (1.1 Ohms maximum).

Mechanical compatibility: Through-hole mounting type, radial disc package configuration, physical dimensions (0.291" diameter x 0.118" thickness, 7.40mm x 3.00mm), seated height (0.500" / 12.70mm maximum), and lead spacing (0.201" / 5.10mm).

Compliance and ratings: AEC-Q200 automotive qualification, ROHS3 compliance, and MSL 1 rating.

The substitute part MF-RHT050-0 meets all these criteria and belongs to the same Multifuse® MF-RHT series from Bourns Inc.

Parameter Comparison

Engineering Selection Recommendations

Both MF-RHT050-AP and MF-RHT050-0 are active production parts from Bourns Inc. with identical electrical and mechanical specifications. Selection between these parts may be based on inventory availability, packaging preferences, or supply chain considerations. Both parts carry AEC-Q200 automotive qualification and ROHS3 compliance, making them suitable for equivalent circuit protection applications. The difference in part number suffix does not indicate a functional or performance distinction based on the provided specifications.

Frequently Asked Questions (FAQ)

Q: Can MF-RHT050-0 be used as a direct replacement for MF-RHT050-AP?

A: Yes. Both parts are polymeric PTC resettable fuses with identical electrical ratings (30V, 500 mA hold current, 920 mA trip current), mechanical dimensions (0.291" diameter radial disc, 0.500" seated height), and compliance certifications (AEC-Q200, ROHS3). They are functionally equivalent for through-hole circuit board applications.

Q: What determines if a part is a valid substitute for MF-RHT050-AP?

A: A substitute must match all critical parameters: maximum voltage (30V), hold current (500 mA), trip current (920 mA), initial resistance (480 mOhms minimum), post-trip resistance (1.1 Ohms maximum), operating temperature range (-40°C to 125°C), through-hole mounting type, radial disc package, physical dimensions (7.40mm x 3.00mm), and AEC-Q200 rating.

Q: Are there any compliance or certification differences between these parts?

A: No. Both MF-RHT050-AP and MF-RHT050-0 carry identical compliance: AEC-Q200 automotive qualification, ROHS3 compliance, MSL 1 (unlimited moisture sensitivity), REACH unaffected status, and EAR99 export classification.

Q: What is the lead spacing for these radial disc fuses?

A: The lead spacing is 0.201" (5.10mm) for both parts, ensuring compatibility with standard through-hole PCB layouts designed for this component family.

Q: Can these parts be used in automotive applications?

A: Yes. Both parts carry AEC-Q200 qualification, which certifies them for automotive-grade reliability and performance standards.