HS25 25K F Wirewound Chassis Mount Resistor - Equivalent & Substitute Parts

Part Overview

The HS25 25K F is a 25-watt wirewound chassis mount resistor manufactured by Ohmite, rated at 25 kOhms with ±1% tolerance. This component is designed for high-power applications requiring stable resistance values and pulse withstanding capability. The part is currently in active production status with RoHS compliance certification. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and mounting characteristics are maintained across alternative manufacturers.

Substiute Parts

HS25 25K F

OhmiteIn Stock: 907HS25 25K F Datasheet

Current PartRFQ

825F25KE

ARCOLIn Stock: 1168825F25KE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the HS25 25K F are qualified based on the following critical parameters:

• Resistance value: 25 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 25W (exact match required)
• Composition: Wirewound (exact match required)
• Housing type: Aluminum (exact match required)
• Mounting feature: Flanges (exact match required)
• Physical dimensions: 1.075" L x 1.102" W x 0.583" H (exact match required)
• Lead style: Solder Lugs (exact match required)
• RoHS compliance: Required

The ARCOL 825F25KE meets all substitution criteria and is classified as a direct equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both the HS25 25K F and 825F25KE are active production components with RoHS compliance certification and unlimited moisture sensitivity level ratings. Selection between these parts is based on availability and procurement requirements, as both meet identical electrical and mechanical specifications for 25 kOhms ±1% 25W wirewound chassis mount applications. The ARCOL 825F25KE is a qualified direct substitute when the Ohmite HS25 25K F is unavailable.

Frequently Asked Questions (FAQ)

Q: Can the ARCOL 825F25KE be used as a direct replacement for the Ohmite HS25 25K F?

A: Yes. Both components share identical resistance values (25 kOhms), tolerance (±1%), power rating (25W), composition (wirewound), housing type (aluminum), mounting features (flanges), physical dimensions, and lead styles (solder lugs). Both are RoHS compliant with unlimited MSL ratings.

Q: Are there dimensional differences between these parts?

A: No. Both components have identical dimensions of 1.075" L x 1.102" W x 0.583" H (27.30mm x 28.00mm x 14.80mm), ensuring mechanical compatibility in existing circuit board layouts and chassis assemblies.

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

A: The Ohmite HS25 25K F has a temperature coefficient of 25ppm/°C, while the ARCOL 825F25KE has a temperature coefficient of ±20ppm/°C. Both values are within acceptable ranges for standard wirewound resistor applications.

Q: Are both parts suitable for pulse withstanding applications?

A: The Ohmite HS25 25K F explicitly lists pulse withstanding as a feature. The ARCOL 825F25KE specifications do not explicitly document this feature in the provided data. Verify pulse withstanding requirements with the component manufacturer if this capability is critical to your application.

Q: What packaging formats are available?

A: The Ohmite HS25 25K F is supplied in box packaging. The ARCOL 825F25KE is supplied in bulk packaging. Confirm packaging requirements with your procurement process.