810F20R Equivalent & Substitute Parts

Part Overview

The Ohmite 810F20R is a 20 Ohms ±1% 10W wirewound chassis mount resistor from the Metal-Mite®89 series. This component is classified as obsolete, making identification of suitable alternatives essential for ongoing system support and new design implementations. The 810F20R features aluminum housing with flanged mounting and solder lug termination, designed for applications requiring precision resistance and high power dissipation in compact form factors.

Substiute Parts

810F20R

OhmiteIn Stock: 928810F20R Datasheet

Current PartRFQ

810F20RE

OhmiteIn Stock: 2144810F20RE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 810F20R is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must maintain identical resistance value (20 Ohms), tolerance (±1%), power rating (10W), composition (wirewound), temperature coefficient (±20ppm/°C), operating temperature range (-55°C to 275°C), housing material (aluminum), mounting configuration (flanges), lead termination (solder lugs), and physical dimensions (0.750" L x 0.812" W, height 0.400" max).

The 810F20RE meets all substitution criteria as a direct equivalent from the same manufacturer and series, with the primary distinction being active product status and improved compliance posture.

Parameter Comparison

Engineering Selection Recommendations

The 810F20RE is the direct equivalent substitute for the obsolete 810F20R. Both components are manufactured by Ohmite within the Metal-Mite®89 series and provide identical electrical and mechanical performance across all specified parameters.

Selection of the 810F20RE is supported by its active product status, ensuring long-term availability and supply chain continuity. The 810F20RE additionally provides ROHS3 compliance, addressing regulatory requirements for new designs and manufacturing environments where RoHS compliance is mandated. The component maintains full backward compatibility with existing 810F20R applications without modification to circuit design or PCB layout.

Frequently Asked Questions (FAQ)

Q: Can the 810F20RE be used as a direct replacement for the 810F20R?

A: Yes. The 810F20RE is electrically and mechanically identical to the 810F20R across all specified parameters, including resistance, tolerance, power rating, temperature coefficient, operating temperature range, physical dimensions, and mounting configuration.

Q: What is the primary advantage of switching to the 810F20RE?

A: The 810F20RE is an active product with confirmed long-term availability, whereas the 810F20R is obsolete. Additionally, the 810F20RE meets ROHS3 compliance standards, whereas the 810F20R does not.

Q: Are there any packaging differences between these parts?

A: The 810F20R packaging specification is listed as "-" (unspecified), while the 810F20RE is supplied in Tray packaging. Both components maintain identical physical dimensions and mounting characteristics.

Q: Will the 810F20RE function in existing 810F20R circuit applications without modification?

A: Yes. The 810F20RE provides full functional equivalence and can be substituted without circuit redesign or PCB layout changes.

Q: What compliance certifications apply to the 810F20RE?

A: The 810F20RE is ROHS3 compliant and REACH unaffected. Both components carry ECCN EAR99 and HTSUS 8533.21.0080 classifications.