RT500AS10R0KB Equivalent & Substitute Parts

Part Overview

The RT500AS10R0KB is a 10 Ohm, 500W wirewound linear potentiometer manufactured by Vishay Sfernice, designed for panel mount applications with a 1-turn adjustment mechanism and solder turret termination. This component is classified as obsolete, necessitating identification of active equivalent alternatives to maintain system functionality and ensure continued availability for new designs and repairs.

Substiute Parts

RT500AS10R0KB

Vishay SferniceIn Stock: 849RT500AS10R0KB Datasheet

Current PartRFQ

RRS10RE

OhmiteIn Stock: 1178RRS10RE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RT500AS10R0KB is determined by strict equivalence across the following critical parameters:

• Resistance value: 10 Ohms (exact match required)
• Power rating: 500W (exact match required)
• Taper characteristic: Linear (exact match required)
• Number of turns: 1 (exact match required)
• Resistive material: Wirewound (exact match required)
• Mounting configuration: Panel Mount (exact match required)
• Tolerance: ±10% (exact match required)

The RRS10RE from Ohmite meets all mandatory electrical and mechanical substitution criteria. Variations in termination style (solder lug versus solder turret), actuator geometry, body diameter, and rotation angle do not preclude functional equivalence when the core electrical parameters and mounting type remain identical.

Parameter Comparison

Engineering Selection Recommendations

The RRS10RE is the qualified substitute for the RT500AS10R0KB based on the following factors:

Electrical Equivalence: Both components provide identical resistance (10 Ohms), power handling (500W), tolerance (±10%), and linear taper characteristics. These parameters define functional performance in circuit applications.

Product Status: The RT500AS10R0KB is obsolete, while the RRS10RE maintains active production status, ensuring long-term availability and supply chain continuity.

Compliance: The RRS10RE carries ROHS3 compliance certification, meeting current regulatory requirements for electronic component manufacturing and distribution.

Mechanical Compatibility: While the RRS10RE exhibits differences in body diameter, actuator geometry, and termination style, these variations do not affect electrical function when integrated into panel mount applications. PCB layout and mechanical enclosure design must accommodate the larger body diameter (8.000" versus 5.630") and alternative termination configuration.

Frequently Asked Questions (FAQ)

Q: Can the RRS10RE directly replace the RT500AS10R0KB without circuit modification?

A: Yes, from an electrical standpoint. The RRS10RE provides identical resistance, power rating, tolerance, and taper. However, mechanical integration requires verification of panel cutout dimensions and termination point accessibility due to the larger body diameter and different actuator type.

Q: What is the significance of the different rotation angles (300° versus 325°)?

A: Rotation angle defines the mechanical travel range of the adjustment shaft. The 25° difference does not affect electrical performance but may impact user interface feel and adjustment resolution in applications requiring precise control. Verify that the application's mechanical design accommodates the RRS10RE's 325° rotation.

Q: Why does the RRS10RE have a larger body diameter?

A: Body diameter is a mechanical design parameter that does not influence electrical characteristics. The larger diameter (8.000" versus 5.630") requires confirmation that the panel mounting location provides sufficient space. Verify panel cutout and surrounding component clearances before substitution.

Q: What is the difference between solder turret and solder lug termination?

A: Both termination styles provide electrical connection points suitable for soldering. Solder turret (RT500AS10R0KB) and solder lug (RRS10RE) differ in physical geometry. Verify that PCB pad layout and soldering equipment are compatible with the lug-style termination before implementation.

Q: Is ROHS3 compliance required for my application?

A: ROHS3 compliance is mandatory for products distributed in the European Union and many other regulated markets. The RRS10RE's ROHS3 certification ensures compliance with current environmental and safety directives. Verify your application's regulatory requirements.

Q: Are there any other 10 Ohm, 500W wirewound potentiometers available?

A: Substitution eligibility is strictly limited to components matching all specified parameters: 10 Ohms resistance, 500W power rating, linear taper, 1-turn configuration, wirewound construction, and panel mount type. Only the RRS10RE meets these criteria based on the provided data.