AHA500JB-10R Equivalent & Substitute Parts

Part Overview

The AHA500JB-10R is a 10 Ohms ±5% 5W wirewound chassis mount resistor manufactured by YAGEO in the AHA series. This component is actively produced and widely used in applications requiring precision current limiting, load balancing, and thermal management in electronic circuits. Substitute parts are identified to provide alternatives with improved electrical characteristics, enhanced reliability, or different packaging configurations while maintaining functional compatibility within the same application space.

Key Parameters

Parameter	Value
Resistance	10 Ohms
Tolerance	±5%
Power Rating	5W
Composition	Wirewound
Mounting Feature	Flanges
Lead Style	Solder Lugs
Operating Temperature Range	-55°C ~ 250°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following core parameters: resistance value (10 Ohms), composition (wirewound), mounting feature (flanges), lead style (solder lugs), and compliance certifications (ROHS3). All identified substitute parts meet or exceed these baseline requirements.

The substitute parts are grouped into two categories based on electrical performance:

Category 1 - Tolerance Upgrade (±1%): Parts 805F10RE, RH00510R00FE02, TMC00510R00FE02, and UAL5-10RF8 provide improved tolerance specifications compared to the main part's ±5% tolerance.

Category 2 - Power Rating Consideration: Parts RH00510R00FE02, TMC00510R00FE02, and UAL5-10RF8 offer higher power ratings (7.5W) compared to the main part's 5W rating, enabling use in higher dissipation applications.

All substitute parts maintain ROHS3 compliance and operate within compatible temperature ranges.

Parameter Comparison

Parameter	AHA500JB-10R (Main)	805F10RE	RH00510R00FE02	TMC00510R00FE02	UAL5-10RF8
Manufacturer	YAGEO	Ohmite	Vishay Dale	Vishay Dale	Riedon
Resistance	10 Ohms	10 Ohms	10 Ohms	10 Ohms	10 Ohms
Tolerance	±5%	±1%	±1%	±1%	±1%
Power Rating	5W	5W	7.5W	7.5W	7.5W
Temperature Coefficient	±200ppm/°C	±20ppm/°C	±20ppm/°C	±20ppm/°C	±50ppm/°C
Operating Temperature	-55°C ~ 250°C	-55°C ~ 275°C	-55°C ~ 250°C	-55°C ~ 250°C	-55°C ~ 275°C
Composition	Wirewound	Wirewound	Wirewound	Wirewound	Wirewound
Mounting Feature	Flanges	Flanges	Flanges	Flanges	Flanges
Lead Style	Solder Lugs	Solder Lugs	Solder Lugs	Solder Lugs	Solder Lugs
Packaging	Bulk	Tray	Bulk	Bulk	Bulk
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All substitute parts are actively produced and ROHS3 compliant, meeting regulatory requirements for current applications.

805F10RE (Ohmite Metal-Mite®89): Direct functional equivalent with improved tolerance (±1%) and lower temperature coefficient (±20ppm/°C). Maintains 5W power rating and -55°C ~ 275°C operating range. Suitable for applications requiring tighter tolerance specifications without increased power dissipation capacity.

RH00510R00FE02 (Vishay Dale RH Series): Upgrade option providing ±1% tolerance, 7.5W power rating, and moisture-resistant coating. Maintains -55°C ~ 250°C operating range. Recommended for applications with higher thermal dissipation requirements or enhanced environmental protection needs.

TMC00510R00FE02 (Vishay Dale TMC Series): Functionally equivalent to RH00510R00FE02 with ±1% tolerance, 7.5W power rating, and moisture-resistant coating. Maintains -55°C ~ 250°C operating range. Provides alternative sourcing from Vishay Dale's TMC series.

UAL5-10RF8 (Riedon UAL Series): Premium option with ±1% tolerance, 7.5W power rating, and extended operating range (-55°C ~ 275°C). Includes current sense, flame proof, pulse withstanding, and safety features. Lower temperature coefficient (±50ppm/°C) compared to main part. Suitable for demanding applications requiring enhanced reliability and safety certifications.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with ±1% tolerance in place of the AHA500JB-10R's ±5% tolerance?

A: Yes. The ±1% tolerance substitute parts (805F10RE, RH00510R00FE02, TMC00510R00FE02, UAL5-10RF8) provide tighter tolerance specifications and are functionally compatible. The lower tolerance improves circuit accuracy and stability.

Q: What is the difference between the 5W and 7.5W power-rated substitutes?

A: The 5W-rated 805F10RE maintains the original power specification. The 7.5W-rated parts (RH00510R00FE02, TMC00510R00FE02, UAL5-10RF8) provide higher thermal dissipation capacity, enabling use in applications with greater power requirements. Both are mechanically and electrically compatible with the AHA500JB-10R footprint.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All identified substitute parts are ROHS3 compliant and meet the same regulatory requirements as the main part.

Q: What is the significance of temperature coefficient differences?

A: Temperature coefficient indicates resistance value drift with temperature change. The main part has ±200ppm/°C, while most substitutes offer ±20ppm/°C or ±50ppm/°C. Lower values indicate greater stability across temperature variations, beneficial for precision applications.

Q: Does packaging format affect electrical performance?

A: No. Packaging format (Bulk vs. Tray) does not affect electrical performance or functional compatibility. Selection depends on procurement and inventory management requirements.

Q: Can I use UAL5-10RF8 in applications requiring current sense functionality?

A: Yes. The UAL5-10RF8 includes current sense capability as a specified feature, making it suitable for applications requiring this functionality. Other substitutes do not list this feature.

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