AHA10AFB-100R Equivalent & Substitute Parts

Part Overview

The AHA10AFB-100R is a 100 Ohms ±1% 10W wirewound chassis mount resistor manufactured by YAGEO in the AHA series. This component is an active product designed for applications requiring precision resistive elements with high power dissipation capability and stable performance across extended temperature ranges. Equivalent and substitute parts are identified to provide design flexibility, supply chain alternatives, and performance optimization options for circuit implementations utilizing this resistor specification.

Key Parameters

Parameter	Value
Resistance	100 Ohms
Tolerance	±1%
Power Rating	10W
Composition	Wirewound
Temperature Coefficient	±200ppm/°C
Operating Temperature Range	-55°C ~ 250°C
Housing Type	Aluminum
Mounting Feature	Flanges
Lead Style	Solder Lugs
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the AHA10AFB-100R are qualified based on the following criteria:

Primary Substitution Criteria:

Resistance value: 100 Ohms
Tolerance: ±1%
Composition: Wirewound
Housing type: Aluminum with flanges
Lead style: Solder lugs
RoHS3 compliance

Grouping Logic:

Group 1 - Direct Equivalents (10W Rating): Parts maintaining the exact 10W power rating with compatible dimensional and electrical specifications. These include UAL10-100RF8 (Riedon) and 810F100E (Ohmite).

Group 2 - Upgraded Equivalents (12.5W Rating): Parts with increased power rating (12.5W) while maintaining all other critical parameters. These include RH010100R0FE02 and TMC010100R0FE02 (both Vishay Dale). The higher power rating provides additional thermal margin in applications.

All substitute parts maintain ±1% tolerance, aluminum housing construction, flange mounting, and solder lug termination. Variations in temperature coefficient and maximum operating temperature are noted in the parameter comparison table.

Parameter Comparison

Parameter	AHA10AFB-100R (YAGEO)	UAL10-100RF8 (Riedon)	810F100E (Ohmite)	RH010100R0FE02 (Vishay Dale)	TMC010100R0FE02 (Vishay Dale)
Resistance	100 Ohms	100 Ohms	100 Ohms	100 Ohms	100 Ohms
Tolerance	±1%	±1%	±1%	±1%	±1%
Power Rating	10W	10W	10W	12.5W	12.5W
Temperature Coefficient	±200ppm/°C	±20ppm/°C	±20ppm/°C	±20ppm/°C	±20ppm/°C
Operating Temperature Range	-55°C ~ 250°C	-55°C ~ 275°C	-55°C ~ 275°C	-55°C ~ 250°C	-55°C ~ 250°C
Size / Dimension (L x W)	0.748" x 0.787" (19.00mm x 20.00mm)	0.752" x 0.799" (19.10mm x 20.30mm)	0.750" x 0.812" (19.05mm x 20.63mm)	0.750" x 0.800" (19.05mm x 20.32mm)	0.750" x 0.800" (19.05mm x 20.32mm)
Height - Seated (Max)	0.429" (10.90mm)	0.417" (10.60mm)	0.400" (10.16mm)	0.405" (10.29mm)	0.405" (10.29mm)
Composition	Wirewound	Wirewound	Wirewound	Wirewound	Wirewound
Housing Type	Aluminum	Aluminum	Aluminum	Aluminum	Aluminum
Mounting Feature	Flanges	Flanges	Flanges	Flanges	Flanges
Lead Style	Solder Lugs	Solder Lugs	Solder Lugs	Solder Lugs	Solder Lugs
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	Vendor Undefined

Engineering Selection Recommendations

For Direct Replacement (10W Applications):

UAL10-100RF8 (Riedon) and 810F100E (Ohmite) maintain the 10W power rating specification. Both are ROHS3 compliant and active products. UAL10-100RF8 offers extended operating temperature range to 275°C and includes additional features (current sense, flame proof, pulse withstanding, safety). 810F100E is packaged in trays and offers improved temperature coefficient performance (±20ppm/°C versus ±200ppm/°C).

For Upgraded Performance (12.5W Applications):

RH010100R0FE02 and TMC010100R0FE02 (both Vishay Dale) provide 12.5W power rating with moisture-resistant features. Both maintain the -55°C ~ 250°C operating range and ROHS3 compliance. RH010100R0FE02 specifies REACH Unaffected status. TMC010100R0FE02 lists REACH status as Vendor Undefined.

All substitute parts are active products with current inventory availability and maintain the critical electrical parameters (100 Ohms, ±1% tolerance, wirewound composition, aluminum housing, flange mounting, solder lug termination).

Frequently Asked Questions (FAQ)

Q: Can UAL10-100RF8 replace AHA10AFB-100R in all applications?

A: UAL10-100RF8 is electrically and mechanically compatible as a direct 10W equivalent. Dimensional variations are minimal (0.752" x 0.799" versus 0.748" x 0.787"). The improved temperature coefficient (±20ppm/°C) and extended operating range (-55°C ~ 275°C) provide performance advantages. Verify PCB layout clearances for the slightly larger width dimension.

Q: What is the advantage of using RH010100R0FE02 or TMC010100R0FE02?

A: These parts provide 12.5W power rating compared to the 10W specification of AHA10AFB-100R. This increased rating offers additional thermal margin and derating capability in high-power applications. Both maintain ±1% tolerance and aluminum housing construction. Dimensional compatibility is confirmed within standard PCB mounting tolerances.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. AHA10AFB-100R, UAL10-100RF8, 810F100E, RH010100R0FE02, and TMC010100R0FE02 are all ROHS3 compliant.

Q: What is the difference between 810F100E packaging (tray) and bulk packaging?

A: 810F100E is supplied in tray packaging, while AHA10AFB-100R, UAL10-100RF8, RH010100R0FE02, and TMC010100R0FE02 are supplied in bulk packaging. Tray packaging provides organized component presentation and may affect handling and storage procedures. Electrical and mechanical specifications remain identical.

Q: How do temperature coefficients affect circuit performance?

A: AHA10AFB-100R specifies ±200ppm/°C, while substitute parts specify ±20ppm/°C. Lower temperature coefficient indicates more stable resistance across temperature variations. For precision applications requiring minimal resistance drift, substitute parts with ±20ppm/°C provide superior performance.

Q: Are dimensional differences significant for PCB layout?

A: Dimensional variations are within standard manufacturing tolerances. Maximum height differences range from 0.400" to 0.429". Width variations range from 0.787" to 0.812". Verify specific PCB layout constraints and clearance requirements before final component selection.

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