HSA55R0F Equivalent & Substitute Parts

Part Overview

The HSA55R0F is a 5 Ohms ±1% 10W wirewound chassis mount resistor manufactured by TE Connectivity Passive Product. This component is designed for applications requiring precision resistive elements with high power dissipation capability in a compact form factor. The part is currently in active production status with 881 pieces available in inventory.

Substitute parts are identified when equivalent electrical specifications and mechanical compatibility parameters are met, enabling direct replacement in circuit designs without functional degradation.

Key Parameters

Parameter	Value
Resistance	5 Ohms
Tolerance	±1%
Power Rating	10W
Composition	Wirewound
Temperature Coefficient	±50ppm/°C
Operating Temperature Range	-55°C ~ 200°C
Housing Type	Aluminum
Mounting Feature	Flanges
Lead Style	Solder Lugs
Package Type	Axial, Box
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the HSA55R0F is determined by matching the following critical parameters:

Electrical Specifications:

Resistance value: 5 Ohms
Tolerance: ±1%
Power rating: 10W
Composition: Wirewound
Temperature coefficient: ±50ppm/°C

Mechanical Specifications:

Housing material: Aluminum
Mounting feature: Flanges
Lead style: Solder Lugs
Package configuration: Axial, Box

Compliance Requirements:

RoHS3 Compliance
Active product status

The substitute part 810F5R0E meets all electrical and mechanical criteria for direct substitution. Dimensional variations and extended operating temperature range do not preclude functional equivalence in standard applications.

Parameter Comparison

Parameter	HSA55R0F (TE Connectivity)	810F5R0E (Ohmite)	Match Status
Resistance	5 Ohms	5 Ohms	Equivalent
Tolerance	±1%	±1%	Equivalent
Power Rating	10W	10W	Equivalent
Composition	Wirewound	Wirewound	Equivalent
Temperature Coefficient	±50ppm/°C	±50ppm/°C	Equivalent
Operating Temperature Range	-55°C ~ 200°C	-55°C ~ 275°C	Compatible (810F5R0E extends upper limit)
Housing Type	Aluminum	Aluminum	Equivalent
Mounting Feature	Flanges	Flanges	Equivalent
Lead Style	Solder Lugs	Solder Lugs	Equivalent
Package Type	Axial, Box	Axial, Box	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Size (Length x Width)	0.669" x 0.669" (17.00mm x 17.00mm)	0.750" x 0.812" (19.05mm x 20.63mm)	Minor dimensional variation
Height - Seated (Max)	0.354" (9.00mm)	0.400" (10.16mm)	Minor dimensional variation

Engineering Selection Recommendations

Primary Selection: HSA55R0F

The HSA55R0F remains the primary component choice when available. It is manufactured by TE Connectivity Passive Product, maintains active production status, and carries ROHS3 compliance certification. Current inventory of 881 pieces supports immediate procurement requirements.

Approved Substitute: 810F5R0E

The 810F5R0E manufactured by Ohmite (Metal-Mite®89 series) is an approved equivalent substitute. This component satisfies all electrical parameter requirements and maintains identical tolerance, power rating, and temperature coefficient specifications. The extended operating temperature range (-55°C ~ 275°C versus -55°C ~ 200°C) provides additional thermal margin in high-temperature applications. Both components carry ROHS3 compliance and active product status. Dimensional differences are minor and do not impact standard mounting configurations. Inventory availability of 934 pieces supports supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the 810F5R0E directly replace the HSA55R0F in existing circuit designs?

A: Yes. The 810F5R0E meets all electrical specifications including resistance value, tolerance, power rating, temperature coefficient, and composition. Mechanical compatibility is confirmed through identical mounting features, lead style, and package configuration. Dimensional variations are minor and do not affect standard PCB or chassis mounting applications.

Q: What are the key differences between these two parts?

A: The primary differences are manufacturer origin and physical dimensions. The 810F5R0E features a slightly larger footprint (0.750" x 0.812" versus 0.669" x 0.669") and extended maximum operating temperature (275°C versus 200°C). Electrical performance is identical across all specified parameters.

Q: Are both parts RoHS compliant?

A: Yes. Both the HSA55R0F and 810F5R0E carry ROHS3 compliance certification, meeting current environmental and regulatory requirements.

Q: What should be considered when selecting between these substitutes?

A: Selection should be based on availability, lead time, and thermal operating requirements. If the application operates below 200°C, either part is suitable. For applications approaching or exceeding 200°C, the 810F5R0E provides extended thermal capability. Verify PCB layout accommodates the slightly larger dimensions of the 810F5R0E if space constraints exist.

Q: Are there any packaging or inventory considerations?

A: Both parts are supplied in tray packaging. The HSA55R0F has 881 pieces in current inventory, while the 810F5R0E has 934 pieces available. Procurement decisions should account for supply chain lead times and project scheduling requirements.

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