RT500AS2200KB Equivalent & Substitute Parts

Part Overview

The RT500AS2200KB is a 220 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 part is classified as obsolete, making identification of suitable substitute components essential for ongoing system maintenance and new design implementations where this specification remains functionally required.

Substiute Parts

RT500AS2200KB

Vishay SferniceIn Stock: 878RT500AS2200KB Datasheet

Current PartRFQ

RRS250E

OhmiteIn Stock: 941RRS250E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RT500AS2200KB is determined by the following critical parameters:

• Resistance Value: 220 Ohms (primary functional requirement)
• Power Rating: 500W (thermal and load capacity)
• Taper Type: Linear (response characteristic)
• Resistive Material: Wirewound (construction method and performance class)
• Mounting Configuration: Panel Mount, 1-turn, single gang (mechanical and electrical interface)
• Tolerance: ±10% (accuracy specification)

The substitute part RRS250E from Ohmite meets the core electrical and mechanical requirements for panel mount wirewound potentiometer applications. While the resistance value differs (250 Ohms versus 220 Ohms), this variance falls within acceptable substitution parameters for applications where the potentiometer functions as a load resistor or adjustment element rather than a precision reference component. Both parts maintain identical power ratings, linear taper characteristics, 1-turn configuration, and panel mount architecture.

Parameter Comparison

Engineering Selection Recommendations

The RRS250E serves as the primary substitute for the obsolete RT500AS2200KB based on the following factors:

Product Status: The RT500AS2200KB is obsolete with no active manufacturing. The RRS250E maintains active product status with current inventory availability (842 pcs), ensuring supply chain continuity.

Compliance: The RRS250E is ROHS3 compliant and REACH unaffected, meeting modern regulatory requirements for electronic component procurement. The original part's compliance status is not specified.

Electrical Equivalence: Both components maintain 500W power ratings, linear taper characteristics, ±10% tolerance, and 1-turn wirewound construction. The 250 Ohm resistance of the RRS250E represents a 13.6% increase from the 220 Ohm specification, which remains within the combined tolerance band for applications where the potentiometer functions as a load element or adjustment resistor.

Mechanical Interface: Both parts feature panel mount configuration with solder-based termination. The RRS250E uses solder lug termination versus solder turret on the original part; both are standard connection methods for high-power wirewound potentiometers. Actuator differences (round versus flatted) and rotation angle variance (300° versus 325°) are mechanical considerations that do not affect electrical substitution validity.

Frequently Asked Questions (FAQ)

Q: Can the RRS250E directly replace the RT500AS2200KB in all applications?

A: The RRS250E is electrically and mechanically compatible for panel mount wirewound potentiometer applications. The 250 Ohm resistance differs from the original 220 Ohm specification by 13.6%. Substitution is valid for applications where the potentiometer functions as a load resistor or adjustment element. Applications requiring precise 220 Ohm resistance should evaluate the impact of this variance on circuit performance.

Q: What are the differences in termination style between these parts?

A: The RT500AS2200KB uses solder turret termination, while the RRS250E uses solder lug termination. Both are standard connection methods for high-power wirewound potentiometers and are compatible with typical PCB and panel mount assembly processes.

Q: Does the RRS250E meet current regulatory requirements?

A: Yes. The RRS250E is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic component procurement. The original RT500AS2200KB compliance status is not specified.

Q: Are there mechanical mounting differences?

A: Both parts are panel mount potentiometers with 1-turn configuration. The RRS250E features a flatted actuator with 325° rotation, while the RT500AS2200KB has a round actuator with 300° rotation. These differences are mechanical characteristics that do not affect electrical substitution validity for standard potentiometer applications.

Q: What is the inventory status of these parts?

A: The RT500AS2200KB has 857 pcs available as new original stock but is obsolete with no ongoing manufacturing. The RRS250E has 842 pcs available as new original stock with active product status, ensuring continued availability for future procurement.