RT100AL2201KB Equivalent & Substitute Parts

Part Overview

The RT100AL2201KB is a 2.2k Ohm, 100W wirewound potentiometer manufactured by Vishay Sfernice, designed for panel mount applications with solder lug termination. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance and new design implementations where this specification remains applicable.

Substiute Parts

RT100AL2201KB

Vishay SferniceIn Stock: 943RT100AL2201KB Datasheet

Current PartRFQ

RLS2K25E

OhmiteIn Stock: 789RLS2K25E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RT100AL2201KB is determined by the following critical parameters:

• Resistance value within tolerance band (2.2k Ohm nominal, ±10%)
• Power dissipation capability (minimum 100W)
• Wirewound construction for thermal stability
• Single-turn, 300° rotation characteristic
• Panel mount configuration with solder lug termination
• Single gang potentiometer design

The RLS2K25E from Ohmite satisfies these substitution criteria with a nominal resistance of 2.25k Ohm (within the ±10% tolerance window of the original specification) and enhanced power rating of 150W, providing superior thermal margin. Both components maintain identical mechanical mounting interfaces and electrical termination methods.

Parameter Comparison

Engineering Selection Recommendations

The RLS2K25E represents the primary substitute for the obsolete RT100AL2201KB. Selection is supported by the following factors:

• Active product status ensures ongoing availability and supply chain continuity
• Resistance value of 2.25k Ohm falls within the ±10% tolerance specification of the original part
• Power rating of 150W exceeds the 100W requirement, providing operational margin
• RoHS3 compliance satisfies modern regulatory requirements
• Identical mechanical and electrical interfaces enable direct substitution without circuit redesign
• Wirewound construction maintains thermal and frequency response characteristics of the original design

Frequently Asked Questions (FAQ)

Q: Can the RLS2K25E directly replace the RT100AL2201KB in existing applications?

A: Yes. Both components share identical mounting interfaces (panel mount), termination method (solder lug), rotation angle (300°), and gang configuration (single gang). The 2.25k Ohm resistance of the RLS2K25E falls within the ±10% tolerance band of the 2.2k Ohm specification.

Q: What is the resistance tolerance impact of substitution?

A: The RT100AL2201KB specifies 2.2k Ohm ±10%, establishing an acceptable range of 1.98k to 2.42k Ohm. The RLS2K25E at 2.25k Ohm operates within this range, introducing a nominal difference of 50 Ohm (2.3% variance from the original value).

Q: Does the higher power rating of the RLS2K25E affect circuit performance?

A: No. The 150W rating of the RLS2K25E provides additional thermal margin compared to the 100W specification of the RT100AL2201KB. This enhancement improves reliability without altering electrical characteristics or circuit behavior.

Q: Are there packaging differences between these components?

A: The RT100AL2201KB is supplied in standard packaging, while the RLS2K25E is supplied in bulk packaging. Both maintain identical physical dimensions and mounting footprints suitable for panel mount applications.

Q: What compliance certifications apply to the substitute part?

A: The RLS2K25E is RoHS3 compliant and classified under ECCN EAR99, meeting current regulatory standards for electronic component distribution and use.