Equivalent & Substitute Parts for Ohmite 810F20K

Part Overview

The Ohmite 810F20K is a 20 kOhms ±1% 10W wirewound chassis mount resistor designed for applications requiring precision resistance with high power dissipation capability. This component features aluminum housing with flanged mounting and solder lug termination, suitable for fixed installation in electronic equipment.

The 810F20K carries an Obsolete product status, indicating it is no longer in active production. Identifying qualified substitute components ensures design continuity and maintains supply chain reliability for legacy systems or new designs requiring equivalent electrical and mechanical characteristics.

Substiute Parts

810F20K

OhmiteIn Stock: 1130810F20K Datasheet

Current PartRFQ

UAL10-20KF8

RiedonIn Stock: 1005UAL10-20KF8 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 810F20K is determined by strict equivalence across the following critical parameters:

• Resistance value: 20 kOhms
• Tolerance: ±1%
• Power rating: 10W
• Composition: Wirewound
• Temperature coefficient: ±20ppm/°C
• Operating temperature range: -55°C to 275°C
• Housing material: Aluminum
• Mounting configuration: Flanged
• Termination style: Solder lugs
• Package format: Axial, Box

The Riedon UAL10-20KF8 meets all specified electrical and mechanical parameters, establishing it as a direct functional equivalent. Physical dimensions show minor variations within acceptable tolerances for chassis mount applications.

Parameter Comparison

Engineering Selection Recommendations

The Riedon UAL10-20KF8 provides electrical and mechanical equivalence to the obsolete Ohmite 810F20K across all specified parameters. The substitute component maintains identical resistance, tolerance, power rating, temperature coefficient, and operating temperature range.

Physical dimensions show minor variations: the UAL10-20KF8 is marginally longer (0.002" difference) and slightly narrower (0.013" difference), with a maximum seated height increase of 0.017". These dimensional differences remain within typical chassis mount installation tolerances and do not affect functional compatibility.

The Riedon component carries Active product status, ensuring ongoing availability and supply chain continuity. ROHS3 compliance of the UAL10-20KF8 provides regulatory advantage over the non-compliant 810F20K for new designs or systems subject to environmental standards.

Frequently Asked Questions (FAQ)

Q: What makes the Riedon UAL10-20KF8 a suitable substitute for the Ohmite 810F20K?

A: Both components share identical electrical specifications (20 kOhms, ±1%, 10W, ±20ppm/°C, -55°C to 275°C) and mechanical configuration (wirewound, aluminum housing, flanged mounting, solder lugs). Physical dimensions vary minimally and remain compatible with standard chassis mount installations.

Q: Are there dimensional compatibility concerns when substituting the UAL10-20KF8 for the 810F20K?

A: The UAL10-20KF8 is 0.002" longer and 0.013" narrower than the 810F20K, with a maximum seated height 0.017" greater. These variations fall within acceptable tolerances for flanged chassis mount applications and do not typically require PCB or mechanical redesign.

Q: Does the RoHS3 compliance of the UAL10-20KF8 affect electrical performance compared to the non-compliant 810F20K?

A: RoHS3 compliance reflects material composition standards and does not alter electrical performance. Both components deliver identical resistance, tolerance, power handling, and temperature characteristics.

Q: What is the inventory status for these components?

A: The Ohmite 810F20K (Obsolete) has 1041 pieces in stock. The Riedon UAL10-20KF8 (Active) has 912 pieces in stock, with ongoing availability through active production.