HS25 500R F Equivalent & Substitute Parts

Part Overview

The HS25 500R F is a 25-watt wirewound chassis mount resistor manufactured by Ohmite, rated at 500 ohms with ±1% tolerance. This component is designed for applications requiring high power dissipation in a compact aluminum-housed form factor with flanged mounting. The part is currently active in production with full RoHS compliance. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the allowed parameter range for this resistor category.

Substiute Parts

HS25 500R F

OhmiteIn Stock: 1145HS25 500R F Datasheet

Current PartRFQ

825F500E

OhmiteIn Stock: 1175825F500E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The 825F500E qualifies as a direct substitute for the HS25 500R F based on the following critical parameters:

• Identical resistance value: 500 ohms
• Identical tolerance: ±1%
• Identical power rating: 25W
• Identical composition: Wirewound
• Identical housing material: Aluminum
• Identical mounting feature: Flanges
• Identical lead style: Solder Lugs
• Equivalent RoHS compliance status (RoHS3 Compliant)

Both parts are manufactured by Ohmite and maintain active product status. Physical dimensions are within acceptable mechanical tolerances for chassis mount applications. The substitute part is available in tray packaging versus box packaging for the main part, which does not affect functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the HS25 500R F and 825F500E are active production components from Ohmite with full RoHS compliance certifications. The 825F500E (Metal-Mite®89 series) offers improved temperature coefficient performance at ±20ppm/°C compared to the HS25 500R F at 100ppm/°C, making it suitable for applications with tighter thermal stability requirements. Physical dimensions of the 825F500E are slightly smaller, which may provide layout advantages in space-constrained designs while maintaining full mechanical compatibility through flanged mounting. Both parts carry identical electrical specifications for resistance, tolerance, and power rating, ensuring functional interchangeability in 25-watt, 500-ohm applications.

Frequently Asked Questions (FAQ)

Q: Can the 825F500E replace the HS25 500R F in existing designs?

A: Yes. Both parts share identical electrical specifications (500 ohms, ±1%, 25W) and mechanical mounting features (aluminum housing, flanges, solder lugs). The 825F500E dimensions are slightly smaller, which is compatible with existing mounting footprints.

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

A: The HS25 500R F has a temperature coefficient of 100ppm/°C, while the 825F500E is rated at ±20ppm/°C. The 825F500E provides superior temperature stability for precision applications.

Q: Does packaging type affect compatibility?

A: No. The HS25 500R F is supplied in box packaging and the 825F500E in tray packaging. Packaging affects only handling and storage logistics, not electrical or mechanical performance.

Q: Are both parts RoHS compliant?

A: Yes. The HS25 500R F is RoHS Compliant and the 825F500E is ROHS3 Compliant, both meeting current environmental regulations.

Q: What are the key parameters for substitution in this resistor category?

A: Resistance value, tolerance, power rating, composition (wirewound), housing material (aluminum), mounting feature (flanges), and lead style (solder lugs) must remain constant for direct substitution.