HS25 75R F Equivalent & Substitute Parts

Part Overview

The HS25 75R F is a 25-watt wirewound chassis mount resistor manufactured by Ohmite, rated at 75 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 active in production with full RoHS compliance. Substitute parts are identified when equivalent electrical specifications, mechanical compatibility, and regulatory certifications align with the original component requirements.

Substiute Parts

HS25 75R F

OhmiteIn Stock: 886HS25 75R F Datasheet

Current PartRFQ

825F75RE

OhmiteIn Stock: 934825F75RE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The 825F75RE qualifies as a direct substitute for the HS25 75R F based on the following critical parameters:

• Identical resistance value: 75 ohms
• Identical tolerance: ±1%
• Identical power rating: 25W
• Identical composition: Wirewound
• Identical mounting feature: Flanges with solder lugs
• Identical housing material: Aluminum
• Equivalent regulatory compliance: RoHS3 compliant (exceeds RoHS requirement)
• Mechanical compatibility: Dimensions within acceptable variance for chassis mount applications

Both parts are manufactured by Ohmite and maintain the same electrical performance envelope required for direct component substitution.

Parameter Comparison

Engineering Selection Recommendations

Both the HS25 75R F and 825F75RE are active production components from Ohmite with full regulatory compliance. The 825F75RE offers enhanced specifications in temperature coefficient performance (±20ppm/°C versus 100ppm/°C) and includes a defined operating temperature range of -55°C to 275°C. Mechanical dimensions of the 825F75RE are slightly smaller, which may provide layout advantages in space-constrained applications while maintaining full compatibility with standard chassis mount flanged installations. Both parts carry equivalent ECCN and HTSUS classifications and meet RoHS requirements for current procurement standards.

Frequently Asked Questions (FAQ)

Q: Can the 825F75RE be used as a direct replacement for the HS25 75R F?

A: Yes. Both components share identical electrical specifications (75 ohms, ±1%, 25W wirewound) and mechanical mounting features (flanged aluminum chassis mount with solder lugs). Dimensional differences are within acceptable tolerances for standard PCB and chassis installations.

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

A: The HS25 75R F specifies 100ppm/°C, while the 825F75RE specifies ±20ppm/°C. The 825F75RE exhibits superior temperature stability, resulting in lower resistance drift across operating temperature ranges.

Q: Are there packaging differences between these parts?

A: Yes. The HS25 75R F is supplied in box packaging, while the 825F75RE is supplied in tray packaging. Both are suitable for production assembly; packaging selection depends on procurement and handling requirements.

Q: Do both parts meet current RoHS requirements?

A: Yes. The HS25 75R F is RoHS compliant, and the 825F75RE is ROHS3 compliant, exceeding baseline RoHS standards. Both parts are suitable for applications requiring RoHS certification.

Q: What are the mechanical compatibility considerations?

A: The 825F75RE dimensions are slightly smaller (approximately 0.013" shorter in length and width, 0.027" shorter in height). These differences do not affect standard chassis mount flange compatibility or solder lug connection methods. Verify clearance in space-constrained layouts.

Q: Are both parts currently in stock?

A: Yes. The HS25 75R F has 780 pieces in stock, and the 825F75RE has 836 pieces in stock, both listed as new original inventory.