85F75R Equivalent & Substitute Parts

Part Overview

The 85F75R is a 75 Ohm ±1% 5W through-hole resistor manufactured by Ohmite in the Acrasil® 80 series. This axial wirewound resistor is designed for applications requiring precision resistance with moderate power dissipation. The part is currently active in production. Equivalent and substitute parts may be required due to inventory availability, regional sourcing constraints, or specific compliance requirements for end applications.

Substiute Parts

85F75R

OhmiteIn Stock: 101385F75R Datasheet

Current PartRFQ

45F75RE

OhmiteIn Stock: 86545F75RE Datasheet

Parametric EquivalentRFQ

RS00575R00FS73

Vishay DaleIn Stock: 1858RS00575R00FS73 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 85F75R is determined by matching the following critical parameters: resistance value (75 Ohms), tolerance (±1%), power rating (5W), composition (wirewound), and package configuration (axial with 2 terminations). All identified substitutes meet these core electrical and mechanical requirements.

The 45F75RE (Ohmite, Ohmicone® 40 series) is a parametric equivalent that maintains identical electrical specifications and physical dimensions while offering improved RoHS3 compliance status.

The RS00575R00FS73 (Vishay Dale, RS series) is a manufacturer-recommended substitute that meets all core parameters and adds moisture-resistant construction. Physical dimensions vary slightly (0.312" Dia x 0.875" L versus 0.343" Dia x 0.937" L), remaining within acceptable axial package tolerances for standard through-hole mounting.

Parameter Comparison

Engineering Selection Recommendations

The 45F75RE provides direct substitution with identical physical dimensions and improved RoHS3 compliance status, making it suitable for applications with environmental or regulatory compliance requirements.

The RS00575R00FS73 is recommended where moisture-resistant construction is required or where extended operating temperature range (-65°C ~ 250°C) is specified. The slightly smaller physical dimensions remain compatible with standard axial through-hole PCB layouts. This part is manufacturer-recommended by Vishay Dale for this resistance and power rating specification.

Selection between substitutes should be based on specific application requirements regarding compliance certifications, environmental conditions, and available inventory.

Frequently Asked Questions (FAQ)

Q: Can the 45F75RE be used as a direct replacement for the 85F75R?

A: Yes. Both parts share identical electrical specifications (75 Ohms ±1%, 5W wirewound) and physical dimensions (0.343" Dia x 0.937" L). The primary difference is improved RoHS3 compliance status of the 45F75RE.

Q: What is the key difference between the RS00575R00FS73 and the 85F75R?

A: The RS00575R00FS73 includes moisture-resistant construction and specifies an extended operating temperature range (-65°C ~ 250°C). Physical dimensions are slightly smaller (0.312" Dia x 0.875" L) but remain compatible with standard axial through-hole mounting.

Q: Are all three parts interchangeable in the same circuit?

A: All three parts meet the core electrical requirements (75 Ohms ±1%, 5W, wirewound, axial package). Physical dimension variations are minor and typically accommodate standard PCB hole spacing. Verify specific application requirements regarding compliance certifications and environmental operating conditions before final selection.

Q: Which substitute should I choose if RoHS compliance is required?

A: The 45F75RE is RoHS3 compliant and maintains identical specifications and dimensions to the 85F75R, making it the appropriate choice for RoHS-regulated applications.

Q: Does the moisture-resistant feature of the RS00575R00FS73 affect electrical performance?

A: No. Moisture resistance is a construction feature that does not alter the core electrical parameters. The RS00575R00FS73 maintains the same resistance value, tolerance, power rating, and temperature coefficient as the 85F75R.