Equivalent & Substitute Parts for Ohmite 805F10R

Part Overview

The Ohmite 805F10R is a 10 Ohms ±1% 5W wirewound chassis mount resistor from the Metal-Mite®89 series, designed for applications requiring precision resistive elements with high power dissipation capability. The part features aluminum housing with flanged mounting and solder lug termination, suitable for chassis-mounted applications in industrial and electronic equipment.

The 805F10R is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing system support, maintenance, and new design implementations. Active alternatives with identical or enhanced electrical characteristics are available to ensure design continuity and supply chain reliability.

Substiute Parts

805F10R

OhmiteIn Stock: 930805F10R Datasheet

Current PartRFQ

805F10RE

OhmiteIn Stock: 939805F10RE Datasheet

DirectRFQ

RH00510R00FC02

Vishay DaleIn Stock: 1227RH00510R00FC02 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 805F10R is determined by the following critical parameters:

Primary Substitution Criteria:

• Resistance value: 10 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Composition: Wirewound (exact match required)
• Temperature Coefficient: ±20ppm/°C (exact match required)
• Housing Type: Aluminum (exact match required)
• Mounting Feature: Flanges (exact match required)
• Lead Style: Solder Lugs (exact match required)
• Package Type: Axial, Box (exact match required)

Secondary Substitution Criteria (allowable variance):

• Power Rating: Equal to or greater than 5W
• Operating Temperature Range: Equal to or greater than the specified range
• Physical dimensions: Within ±0.010" tolerance for mechanical fit

Two substitute parts meet these criteria:

1. Ohmite 805F10RE — Direct manufacturer equivalent with identical electrical specifications and enhanced compliance status
2. Vishay Dale RH00510R00FC02 — Cross-manufacturer substitute with higher power rating (7.5W) and equivalent electrical performance

Parameter Comparison

Engineering Selection Recommendations

Ohmite 805F10RE is the primary substitute for the obsolete 805F10R. Both parts are manufactured by Ohmite and share identical electrical specifications, physical dimensions, and mechanical characteristics. The 805F10RE is currently in active production status with ROHS3 compliance, making it suitable for new designs and systems requiring regulatory adherence. Packaging differs (Tray vs. original packaging), but this does not affect functional compatibility.

Vishay Dale RH00510R00FC02 serves as a secondary cross-manufacturer substitute. This part maintains all critical electrical parameters and mechanical compatibility while offering a higher power rating of 7.5W, providing additional thermal margin in applications approaching the 5W limit. The maximum operating temperature is reduced to 250°C compared to the 805F10R's 275°C specification. Height dimension increases by 0.005" (0.13mm), which must be verified for mechanical clearance in confined mounting spaces. This part is RoHS non-compliant and carries REACH Affected status.

Selection between 805F10RE and RH00510R00FC02 depends on regulatory requirements, thermal design margins, and available mounting space. For applications with strict RoHS compliance mandates, 805F10RE is the appropriate choice. For applications requiring enhanced power dissipation capability, RH00510R00FC02 provides additional thermal headroom.

Frequently Asked Questions (FAQ)

Q: Can the 805F10RE directly replace the obsolete 805F10R without circuit modification?

A: Yes. The 805F10RE is electrically and mechanically identical to the 805F10R. All critical parameters—resistance, tolerance, power rating, temperature coefficient, and physical dimensions—are matched. Only packaging format differs. No circuit modifications are required.

Q: What is the primary advantage of using RH00510R00FC02 over 805F10RE?

A: The RH00510R00FC02 provides a higher power rating of 7.5W compared to 5W, allowing operation with greater thermal margin in applications approaching maximum power dissipation limits. This reduces thermal stress on the component and extends operational life in high-power applications.

Q: Are there mechanical compatibility concerns when substituting RH00510R00FC02?

A: The RH00510R00FC02 has a maximum seated height of 0.335" (8.51mm) compared to 0.330" (8.38mm) for the 805F10R, representing a 0.005" (0.13mm) increase. Verify available mounting clearance in your application before implementation. All other dimensions remain identical.

Q: Which substitute part should be selected for new designs requiring regulatory compliance?

A: The Ohmite 805F10RE is ROHS3 compliant and is the recommended choice for new designs subject to RoHS regulations. The RH00510R00FC02 is RoHS non-compliant and carries REACH Affected status, making it unsuitable for applications with strict environmental compliance requirements.

Q: What is the maximum operating temperature difference between substitutes?

A: The 805F10R and 805F10RE both operate to 275°C. The RH00510R00FC02 operates to a maximum of 250°C, representing a 25°C reduction in upper temperature limit. Verify that your application's maximum operating temperature does not exceed 250°C before selecting this substitute.

Q: Are packaging differences between 805F10R and 805F10RE significant?

A: The 805F10R uses standard box packaging while the 805F10RE is supplied in Tray packaging. This affects handling, storage, and procurement logistics but does not impact electrical or mechanical performance. Verify tray packaging compatibility with your assembly and inventory management processes.