RT500AS2R00KB Equivalent & Substitute Parts

Part Overview

The RT500AS2R00KB is a 2 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, making identification of suitable substitute parts essential for ongoing system maintenance and new design implementations where equivalent functionality is required.

Substiute Parts

RT500AS2R00KB

Vishay SferniceIn Stock: 750RT500AS2R00KB Datasheet

Current PartRFQ

RRS2R0E

OhmiteIn Stock: 1116RRS2R0E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RT500AS2R00KB is based on electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility: Resistance value (2 Ohms), power rating (500W), tolerance (±10%), taper characteristic (Linear), and number of turns (1) must remain constant to ensure functional equivalence in the circuit.

Mechanical Compatibility: Panel mount configuration, single-gang design, and wirewound resistive material are required for physical and operational compatibility.

Termination Consideration: While the main part features solder turret termination and the substitute uses solder lug termination, both are compatible connection methods for panel-mounted potentiometers in equivalent applications.

The RRS2R0E from Ohmite meets all electrical requirements and maintains mechanical compatibility as an active, in-stock alternative to the obsolete RT500AS2R00KB.

Parameter Comparison

Engineering Selection Recommendations

The RRS2R0E is the designated manufacturer-recommended substitute for the RT500AS2R00KB. Selection of this alternative is supported by:

Product Status: The RT500AS2R00KB is obsolete, while the RRS2R0E maintains active production status, ensuring long-term availability and supply chain reliability.

Regulatory Compliance: The RRS2R0E is ROHS3 compliant, meeting current environmental and regulatory standards for electronic components in most jurisdictions.

Electrical Equivalence: Both components share identical resistance (2 Ohms), power rating (500W), tolerance (±10%), taper (Linear), and turn count (1), ensuring direct functional replacement in circuit applications.

Mechanical Compatibility: Both components are panel-mount, single-gang wirewound potentiometers with compatible physical dimensions and connection methods suitable for equivalent installations.

Frequently Asked Questions (FAQ)

Q: Can the RRS2R0E directly replace the RT500AS2R00KB in existing designs?

A: Yes. Both components share identical electrical specifications (2 Ohms, 500W, ±10% tolerance, linear taper, 1 turn). The primary differences are termination style (solder turret vs. solder lug) and actuator geometry, which do not affect electrical performance. Physical mounting and connection methods are compatible for panel-mount applications.

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

A: The rotation angle indicates the mechanical travel range of the potentiometer shaft. The RRS2R0E provides slightly greater rotational range (325° vs. 300°), which does not negatively impact compatibility and may provide marginal operational flexibility in some applications.

Q: Why is the RT500AS2R00KB classified as obsolete?

A: Obsolete status indicates the component is no longer manufactured by Vishay Sfernice. The RRS2R0E from Ohmite is the active equivalent, ensuring continued availability for replacement and new applications.

Q: Are there compliance differences between the two parts?

A: The RRS2R0E is ROHS3 compliant, meeting current environmental regulations. The RT500AS2R00KB compliance status is not specified in available documentation. For new designs or applications requiring regulatory compliance, the RRS2R0E is the appropriate selection.

Q: How do the different termination styles affect installation?

A: The RT500AS2R00KB uses solder turret termination, while the RRS2R0E uses solder lug termination. Both are standard connection methods for panel-mounted potentiometers. Installation compatibility depends on the PCB or circuit design layout. Verify that the target application accommodates the solder lug configuration before implementation.