Equivalent & Substitute Parts for Ohmite 810F25RE

Part Overview

The Ohmite 810F25RE is a 10W, 25 Ohms ±1% wirewound chassis mount resistor with aluminum housing and solder lug termination. This component is classified as Active product status with full RoHS compliance. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are required for design flexibility, inventory management, or supply chain continuity.

Substiute Parts

810F25RE

OhmiteIn Stock: 1004810F25RE Datasheet

Current PartRFQ

RH01025R00FE02

Vishay DaleIn Stock: 1005RH01025R00FE02 Datasheet

DirectRFQ

TMC01025R00FE02

Vishay DaleIn Stock: 889TMC01025R00FE02 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 810F25RE are qualified based on the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Resistance value: 25 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Temperature coefficient: ±20ppm/°C (exact match required)
• Composition: Wirewound (exact match required)

Mechanical Compatibility Criteria:

• 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)

Compliance Criteria:

• RoHS compliance status (minimum: RoHS Compliant or ROHS3 Compliant)

The substitute parts RH01025R00FE02 and TMC01025R00FE02 meet all electrical and mechanical equivalence criteria. Both are rated at 12.5W, which exceeds the 10W requirement and provides additional thermal margin. Both maintain identical resistance, tolerance, temperature coefficient, and mechanical form factor specifications.

Parameter Comparison

Engineering Selection Recommendations

Both RH01025R00FE02 and TMC01025R00FE02 are functionally equivalent to the 810F25RE for applications requiring 25 Ohms ±1% wirewound chassis mount resistors. Selection between these options is based on the following factors:

RH01025R00FE02 (Vishay Dale RH Series): Direct manufacturer substitute with ROHS3 compliance and moisture-resistant coating. Suitable for standard industrial applications.

TMC01025R00FE02 (Vishay Dale TMC Series): Upgrade option with ROHS3 compliance and moisture-resistant coating. Functionally identical to RH01025R00FE02 with series designation difference.

Both substitute parts feature higher power ratings (12.5W versus 10W), providing thermal design margin. Dimensional variations are minor and within typical PCB layout tolerances for chassis mount applications. All three parts maintain identical electrical performance specifications and are suitable for direct substitution in circuit designs.

Frequently Asked Questions (FAQ)

Q: Can RH01025R00FE02 or TMC01025R00FE02 be used as direct replacements for 810F25RE?

A: Yes. Both substitute parts meet all electrical specifications (25 Ohms ±1%, ±20ppm/°C temperature coefficient) and mechanical requirements (aluminum housing, flanged mounting, solder lug termination). The higher power rating (12.5W) provides additional thermal capacity without affecting circuit performance.

Q: What are the dimensional differences between the main part and substitutes?

A: The 810F25RE measures 0.783" L x 0.827" W with 0.433" seated height. Both RH01025R00FE02 and TMC01025R00FE02 measure 0.750" L x 0.800" W with 0.405" seated height. These differences are approximately 4% smaller in length and width, and 6% smaller in height. Verify PCB layout clearances for your specific application.

Q: Are there compliance differences between these parts?

A: The 810F25RE carries RoHS Compliant status. Both RH01025R00FE02 and TMC01025R00FE02 carry ROHS3 Compliant status, which represents an updated compliance standard. Both meet current regulatory requirements for electronic component manufacturing.

Q: What is the difference between RH01025R00FE02 and TMC01025R00FE02?

A: Both parts are manufactured by Vishay Dale with identical electrical and mechanical specifications. The primary difference is the series designation (RH versus TMC). Both feature moisture-resistant coating and ROHS3 compliance. Selection between these options may depend on availability or specific procurement requirements.

Q: Can these parts be used in high-temperature applications?

A: Both substitute parts are rated for operating temperatures from -55°C to 250°C, supporting extended temperature range applications. The ±20ppm/°C temperature coefficient ensures stable resistance performance across this range.