AHA10AJB-5R Equivalent & Substitute Parts

Part Overview

The AHA10AJB-5R is a 5 Ohms ±5% 10W wirewound chassis mount resistor manufactured by YAGEO in the AHA series. This component is actively produced and stocked at 1104 units. Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and regulatory compliance can be maintained while potentially offering improved tolerance, power rating, or operating temperature range.

Key Parameters

Parameter	Value
Resistance	5 Ohms
Tolerance	±5%
Power Rating	10W
Composition	Wirewound
Temperature Coefficient	±200ppm/°C
Operating Temperature Range	-55°C ~ 250°C
Mounting Feature	Flanges
Lead Style	Solder Lugs
Housing Type	Aluminum
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the AHA10AJB-5R are qualified based on the following criteria:

Mandatory Matching Parameters:

Resistance value: 5 Ohms (exact match required)
Composition: Wirewound
Mounting feature: Flanges
Lead style: Solder lugs
Housing type: Aluminum
RoHS compliance: ROHS3 Compliant

Allowable Variations:

Tolerance: May improve from ±5% to ±1%
Power rating: May equal or exceed 10W
Operating temperature range: May extend beyond -55°C ~ 250°C
Temperature coefficient: May improve from ±200ppm/°C to ±50ppm/°C
Physical dimensions: Minor variations within mechanical compatibility

Three substitute parts meet these criteria: 810F5R0E (Ohmite), KAL10FB5R00 (Stackpole Electronics Inc), and UAL10-5RF8 (Riedon).

Parameter Comparison

Parameter	AHA10AJB-5R (Main)	810F5R0E (Ohmite)	KAL10FB5R00 (Stackpole)	UAL10-5RF8 (Riedon)
Resistance	5 Ohms	5 Ohms	5 Ohms	5 Ohms
Tolerance	±5%	±1%	±1%	±1%
Power (Watts)	10W	10W	12.5W	10W
Composition	Wirewound	Wirewound	Wirewound	Wirewound
Temperature Coefficient	±200ppm/°C	±50ppm/°C	±50ppm/°C	±50ppm/°C
Operating Temperature	-55°C ~ 250°C	-55°C ~ 275°C	-55°C ~ 275°C	-55°C ~ 275°C
Mounting Feature	Flanges	Flanges	Flanges	Flanges
Lead Style	Solder Lugs	Solder Lugs	Solder Lugs	Solder Lugs
Housing Type	Aluminum	Aluminum	Aluminum	Aluminum
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Size / Dimension (L x W)	0.748" x 0.787" (19.00mm x 20.00mm)	0.750" x 0.812" (19.05mm x 20.63mm)	0.750" x 0.800" (19.05mm x 20.32mm)	0.752" x 0.799" (19.10mm x 20.30mm)
Height - Seated (Max)	0.429" (10.90mm)	0.400" (10.16mm)	0.421" (10.70mm)	0.417" (10.60mm)

Engineering Selection Recommendations

All three substitute parts maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements equivalent to the AHA10AJB-5R.

810F5R0E (Ohmite Metal-Mite®89 Series): Offers improved tolerance (±1% vs ±5%), reduced temperature coefficient (±50ppm/°C vs ±200ppm/°C), and extended operating temperature to 275°C. Physical dimensions are within acceptable mechanical tolerance. Suitable for applications requiring tighter tolerance specifications.

KAL10FB5R00 (Stackpole Electronics Inc KAL Series): Provides the highest power rating at 12.5W with improved tolerance and temperature coefficient. Includes moisture-resistant features. Dimensions remain compatible. Suitable for applications with higher thermal dissipation requirements or moisture-prone environments.

UAL10-5RF8 (Riedon UAL Series): Matches the 10W power rating with improved tolerance and temperature coefficient. Includes current sense, flame proof, pulse withstanding, and safety features. Dimensions are compatible. Suitable for applications requiring enhanced safety certifications and current sensing capability.

Frequently Asked Questions (FAQ)

Q: Can I substitute the AHA10AJB-5R with any of these parts without circuit redesign?

A: Yes. All substitute parts maintain the same 5 Ohm resistance value, wirewound composition, flanged mounting, solder lug leads, and aluminum housing. Physical dimensions vary minimally and remain mechanically compatible. All are ROHS3 compliant.

Q: What is the primary difference between the main part and substitutes?

A: The AHA10AJB-5R has ±5% tolerance and ±200ppm/°C temperature coefficient. All substitutes improve to ±1% tolerance and ±50ppm/°C temperature coefficient, with extended operating temperature to 275°C.

Q: Which substitute offers the best thermal performance?

A: The KAL10FB5R00 provides the highest power rating at 12.5W, compared to 10W for the main part and other substitutes. This allows greater thermal dissipation capability.

Q: Are there packaging differences I should consider?

A: The AHA10AJB-5R is supplied in Bulk packaging. The 810F5R0E is supplied in Tray packaging. The KAL10FB5R00 and UAL10-5RF8 are supplied in Bulk packaging. Verify packaging requirements for your procurement process.

Q: Do all substitutes meet the same compliance standards?

A: Yes. All parts are ROHS3 compliant and REACH unaffected, matching the regulatory status of the AHA10AJB-5R.

Q: What additional features do the Riedon UAL10-5RF8 provide?

A: The UAL10-5RF8 includes current sense, flame proof, pulse withstanding, and safety features beyond the base specifications of the main part.

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