AHA10AFB-25R Equivalent & Substitute Parts

Part Overview

The AHA10AFB-25R is a 25 Ohms ±1% 10W wirewound chassis mount resistor manufactured by YAGEO in the AHA series. This component is actively produced and designed for applications requiring precision resistive elements with high power dissipation capability in a compact flanged aluminum housing. Substitute parts are identified to address inventory availability, extended lead times, or design flexibility requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

AHA10AFB-25R

YAGEOIn Stock: 1122AHA10AFB-25R Datasheet

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RH01025R00FE02

Vishay DaleIn Stock: 1005RH01025R00FE02 Datasheet

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TMC01025R00FE02

Vishay DaleIn Stock: 889TMC01025R00FE02 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AHA10AFB-25R are qualified based on the following electrical and mechanical parameters:

• Identical resistance value: 25 Ohms
• Identical tolerance: ±1%
• Equal or greater power rating: 10W minimum
• Matching composition: Wirewound
• Compatible operating temperature range: -55°C ~ 250°C
• Identical mounting feature: Flanges with solder lugs
• Identical housing material: Aluminum
• Equivalent package type: Axial, Box

The substitute parts RH01025R00FE02 and TMC01025R00FE02 meet all substitution criteria. Both are manufactured by Vishay Dale and feature a 12.5W power rating, which exceeds the original 10W specification, providing enhanced thermal margin in the same physical envelope.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are suitable for direct replacement of the AHA10AFB-25R in applications where the following conditions are met:

• PCB layout accommodates the marginal dimensional increase (approximately 0.002" in length and width, 0.024" reduction in height)
• The enhanced power rating of 12.5W does not create thermal management conflicts in the application
• All three parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility
• All parts are actively produced with confirmed inventory availability

The Vishay Dale substitutes offer improved temperature coefficient stability (±20ppm/°C versus ±200ppm/°C), which may provide performance benefits in temperature-sensitive applications. Both RH01025R00FE02 and TMC01025R00FE02 are functionally equivalent and differ only in series designation and manufacturer internal classification.

Frequently Asked Questions (FAQ)

Q: Can RH01025R00FE02 or TMC01025R00FE02 be used as direct replacements for AHA10AFB-25R?

A: Yes. Both substitute parts meet all electrical specifications (25 Ohms ±1%, 10W minimum power rating) and mechanical requirements (flanged aluminum housing, solder lugs, identical operating temperature range). Dimensional variations are minimal and typically accommodated in standard PCB layouts.

Q: What is the difference between RH01025R00FE02 and TMC01025R00FE02?

A: Both parts are manufactured by Vishay Dale with identical electrical and mechanical specifications. The difference lies in series designation (RH versus TMC) and internal product classification. From an engineering substitution perspective, they are equivalent.

Q: Does the higher power rating of the substitute parts affect circuit performance?

A: No. The 12.5W rating of the substitute parts exceeds the 10W requirement of the original design. This provides additional thermal margin without altering electrical behavior. The resistance value, tolerance, and temperature coefficient remain the primary performance determinants.

Q: Are there dimensional compatibility concerns?

A: Dimensional differences are negligible. The substitute parts are 0.002" longer and 0.002" wider, with a 0.024" reduction in seated height. Standard PCB layouts accommodate these variations without modification.

Q: Do all three parts meet the same regulatory requirements?

A: Yes. The AHA10AFB-25R and both substitute parts are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes.