Equivalent & Substitute Parts for Ohmite 805F10RE

Part Overview

The Ohmite 805F10RE is a 10 Ohms ±1% 5W wirewound chassis mount resistor designed for applications requiring precision current limiting, load balancing, and thermal management in industrial and electronic equipment. This Active product is manufactured with aluminum housing and flanged mounting features for secure installation. Substitute parts are identified to provide equivalent electrical performance and mechanical compatibility when the primary part is unavailable or when design requirements permit higher power ratings.

Substiute Parts

805F10RE

OhmiteIn Stock: 939805F10RE Datasheet

Current PartRFQ

RH00510R00FE02

Vishay DaleIn Stock: 1891RH00510R00FE02 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Ohmite 805F10RE are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• 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)

Allowable Variation Parameters:

• Power Rating: Equal to or greater than 5W (higher ratings provide design margin)
• Operating Temperature Range: Must encompass or equal the original specification
• Physical dimensions: Identical footprint and height within tolerance

The Vishay Dale RH00510R00FE02 qualifies as a direct substitute, meeting all critical electrical parameters while providing a higher 7.5W power rating and maintaining identical mechanical form factor.

Parameter Comparison

Engineering Selection Recommendations

The Vishay Dale RH00510R00FE02 is a qualified substitute for the Ohmite 805F10RE in applications where the operating temperature does not exceed 250°C. Both parts maintain Active product status and ROHS3 compliance, ensuring regulatory alignment and supply chain continuity.

The substitute part provides a 50% increase in power dissipation capacity (7.5W versus 5W), which is advantageous for thermal margin in current-limiting and load-balancing circuits. The identical mechanical footprint, resistance value, tolerance, and temperature coefficient ensure direct pin-compatible replacement without circuit redesign.

Selection between these parts should be based on application operating temperature requirements. If sustained operation above 250°C is required, the Ohmite 805F10RE must be retained. For applications operating within -55°C to 250°C, the Vishay Dale RH00510R00FE02 provides equivalent performance with enhanced thermal capacity.

Frequently Asked Questions (FAQ)

Q: Can the Vishay Dale RH00510R00FE02 be used as a direct replacement for the Ohmite 805F10RE?

A: Yes, for applications operating within -55°C to 250°C. The substitute part matches all critical electrical parameters (resistance, tolerance, temperature coefficient, composition) and mechanical specifications (footprint, mounting, lead style). The higher power rating (7.5W) provides additional thermal margin without affecting circuit operation.

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

A: The Ohmite 805F10RE operates from -55°C to 275°C, while the Vishay Dale RH00510R00FE02 operates from -55°C to 250°C. The substitute part has a 25°C lower maximum temperature rating. Applications requiring sustained operation above 250°C must use the original Ohmite part.

Q: Are the physical dimensions identical?

A: The length and width are identical at 0.600" L x 0.646" W (15.24mm x 16.41mm). The seated height differs by 0.005" (0.13mm), with the substitute part at 0.335" maximum versus 0.330" for the original. This negligible difference does not affect PCB layout or mechanical clearance in standard applications.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the Ohmite 805F10RE and Vishay Dale RH00510R00FE02 are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes. Both carry identical HTSUS classification (8533.21.0080).

Q: What is the advantage of the higher power rating in the substitute part?

A: The 7.5W rating in the Vishay Dale RH00510R00FE02 versus 5W in the Ohmite 805F10RE provides 50% additional thermal dissipation capacity. This allows the substitute part to operate at lower junction temperatures under the same current load, extending component life and improving reliability margins in thermally constrained designs.

Q: Are there any packaging differences between these parts?

A: Yes. The Ohmite 805F10RE is supplied in Tray packaging, while the Vishay Dale RH00510R00FE02 is supplied in Bulk packaging. Procurement and handling procedures may differ accordingly.