HS25 56R F Equivalent & Substitute Parts

Part Overview

The HS25 56R F is a 25-watt wirewound chassis mount resistor manufactured by Ohmite, rated at 56 ohms with ±1% tolerance. This component is designed for applications requiring high power dissipation with stable resistance values in compact form factors. The part is currently in active production status with 993 units in stock. Substitute parts are identified when equivalent electrical specifications, mechanical compatibility, and compliance certifications align with the original component requirements.

Substiute Parts

HS25 56R F

OhmiteIn Stock: 1057HS25 56R F Datasheet

Current PartRFQ

825F56RE

OhmiteIn Stock: 1154825F56RE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The 825F56RE qualifies as a direct substitute for the HS25 56R F based on the following critical parameters:

• Identical resistance value: 56 ohms
• Matching tolerance: ±1%
• Equivalent power rating: 25W
• Same composition: Wirewound
• Identical mounting configuration: Flanged chassis mount with solder lugs
• Matching housing material: Aluminum
• Equivalent RoHS compliance: ROHS3 Compliant (meets or exceeds RoHS requirements)
• Same moisture sensitivity level: MSL 1 (Unlimited)

Both parts are manufactured by Ohmite and maintain the same electrical and mechanical interface requirements for direct board-level substitution.

Parameter Comparison

Engineering Selection Recommendations

Both the HS25 56R F and 825F56RE are active production components from Ohmite with full RoHS compliance. The 825F56RE (Metal-Mite®89 series) offers a tighter temperature coefficient specification (±20ppm/°C versus 100ppm/°C) and a documented operating temperature range of -55°C to 275°C, providing enhanced thermal stability for temperature-sensitive applications. Dimensional differences are minimal, with the 825F56RE measuring slightly smaller in length and height while maintaining identical electrical performance and mechanical interface compatibility. Selection between these parts should be based on packaging requirements (box versus bulk) and application temperature stability needs.

Frequently Asked Questions (FAQ)

Q: Can the 825F56RE directly replace the HS25 56R F on existing PCBs?

A: Yes. Both components share identical electrical specifications (56Ω, ±1%, 25W), matching mounting configurations (flanged chassis mount with solder lugs), and aluminum housing. Dimensional variations are within acceptable tolerances for standard board layouts.

Q: What is the difference in temperature coefficient between these parts?

A: The HS25 56R F specifies 100ppm/°C, while the 825F56RE specifies ±20ppm/°C. The 825F56RE provides superior temperature stability, making it preferable for applications with strict resistance drift requirements across temperature ranges.

Q: Are both parts RoHS compliant?

A: Yes. The HS25 56R F is RoHS Compliant, and the 825F56RE is ROHS3 Compliant. Both meet environmental compliance requirements for restricted substance use.

Q: What packaging options are available?

A: The HS25 56R F is supplied in box packaging, while the 825F56RE is available in bulk packaging. Packaging selection depends on inventory management and procurement requirements.

Q: Do these parts have moisture sensitivity concerns?

A: No. Both components carry MSL 1 (Unlimited) ratings, indicating no moisture sensitivity limitations for storage or handling.