Ohmite 810F10K Wirewound Chassis Mount Resistor - Equivalent & Substitute Parts

Part Overview

The Ohmite 810F10K is a 10 kOhms ±1% 10W wirewound chassis mount resistor from the Metal-Mite®89 series. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The 810F10K features aluminum housing with flanged mounting and solder lug termination, suitable for applications requiring precision wirewound resistive elements with stable temperature characteristics across extended operating ranges.

Substiute Parts

810F10K

OhmiteIn Stock: 1017810F10K Datasheet

Current PartRFQ

810F10KE

OhmiteIn Stock: 944810F10KE Datasheet

DirectRFQ

825F10KE

OhmiteIn Stock: 1035825F10KE Datasheet

MFR RecommendedRFQ

RH01010K00FC02

Vishay DaleIn Stock: 1132RH01010K00FC02 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 810F10K are classified based on electrical parameter compatibility and mechanical interchangeability. The primary substitution criteria are:

• Electrical Parameters: Resistance value (10 kOhms), tolerance (±1%), and temperature coefficient (±20ppm/°C) must remain constant across all substitutes
• Power Rating Flexibility: Substitutes may have equal or higher power ratings (10W, 12.5W, or 25W) without functional degradation
• Mechanical Compatibility: Mounting feature (flanges), lead style (solder lugs), and housing type (aluminum) must be preserved
• Temperature Range: Operating temperature range must meet or exceed the original specification

The substitute parts are organized into two categories:

1. Direct Electrical Equivalents (810F10KE, RH01010K00FC02): Same or higher power rating with identical electrical characteristics
2. Manufacturer-Recommended Upgrade (825F10KE): Higher power rating variant offering enhanced thermal performance within the same series

Parameter Comparison

Engineering Selection Recommendations

810F10KE (Ohmite): This direct equivalent offers identical electrical specifications with active product status and RoHS compliance. The 810F10KE is the primary substitute for the obsolete 810F10K, providing equivalent performance with modern manufacturing standards and regulatory compliance.

825F10KE (Ohmite): This manufacturer-recommended upgrade provides a 25W power rating while maintaining all electrical parameters. The 825F10KE is suitable for applications requiring enhanced thermal margin or where higher power dissipation capacity is beneficial. ROHS3 compliance indicates the latest regulatory standard adherence.

RH01010K00FC02 (Vishay Dale): This cross-manufacturer substitute from the RH series provides 12.5W power rating with moisture-resistant features. The RH01010K00FC02 maintains electrical equivalence with a reduced operating temperature maximum of 250°C compared to the original 275°C specification. This part is suitable for applications where the lower temperature ceiling does not present a constraint.

Frequently Asked Questions (FAQ)

Q: Can the 810F10KE be used as a direct replacement for the 810F10K?

A: Yes. The 810F10KE maintains identical resistance (10 kOhms), tolerance (±1%), power rating (10W), temperature coefficient (±20ppm/°C), and mechanical configuration. The primary advantage is active product status and RoHS compliance.

Q: What is the benefit of using the 825F10KE over the 810F10KE?

A: The 825F10KE provides a 25W power rating compared to the 10W rating of the 810F10KE. This higher power capacity allows for greater thermal margin in applications with variable load conditions or elevated ambient temperatures. All electrical parameters remain identical.

Q: Is the RH01010K00FC02 suitable for all applications using the 810F10K?

A: The RH01010K00FC02 is electrically equivalent with identical resistance, tolerance, and temperature coefficient. However, the maximum operating temperature is 250°C versus 275°C for the original part. Verify that your application does not require operation above 250°C before selection.

Q: Are there dimensional differences between these substitutes?

A: Yes. The 810F10K measures 0.750" L x 0.812" W with 0.400" seated height. The 810F10KE is slightly larger at 0.783" L x 0.827" W with 0.433" seated height. The 825F10KE is significantly larger at 1.062" L x 1.094" W with 0.556" seated height due to its higher power rating. The RH01010K00FC02 matches the original dimensions closely at 0.750" L x 0.800" W with 0.405" seated height. Verify PCB layout compatibility before substitution.

Q: What packaging options are available?

A: The 810F10K was supplied in box packaging. Substitutes are available in bulk (810F10KE, RH01010K00FC02) or tray (825F10KE) packaging. Confirm packaging requirements for your procurement process.

Q: Does RoHS compliance affect electrical performance?

A: No. RoHS compliance is a regulatory and material composition requirement that does not alter electrical characteristics. The 810F10KE and 825F10KE offer RoHS compliance as a manufacturing advantage without performance change.