RT100AL1500KB Equivalent & Substitute Parts

Part Overview

The RT100AL1500KB is a 150 Ohm, 100W wirewound potentiometer manufactured by Vishay Sfernice, designed for panel mount applications with a 1-turn rotation and solder lug 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

RT100AL1500KB

Vishay SferniceIn Stock: 709RT100AL1500KB Datasheet

Current PartRFQ

RLS150E

OhmiteIn Stock: 955RLS150E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RT100AL1500KB is determined by strict equivalence across the following critical parameters:

• Resistance value: 150 Ohms (exact match required)
• Resistive material: Wirewound construction
• Termination style: Solder lug connections
• Mounting configuration: Panel mount
• Number of turns: 1-turn operation
• Rotation angle: 300° mechanical rotation
• Tolerance: ±10%

The RLS150E from Ohmite meets all these core substitution criteria. While the RLS150E provides a higher power rating (150W versus 100W), this represents an enhancement rather than a limitation, as it maintains full backward compatibility with the original specification while offering improved thermal headroom.

Parameter Comparison

Engineering Selection Recommendations

The RLS150E is the direct substitute for the RT100AL1500KB. The transition from an obsolete component to an active production part ensures long-term supply chain continuity and access to current manufacturing quality standards.

The RLS150E carries ROHS3 compliance certification, meeting modern environmental and regulatory requirements. The increased power rating of 150W provides additional operational margin compared to the original 100W specification, supporting enhanced reliability in thermal-constrained applications.

Both components share identical electrical and mechanical core specifications: 150 Ohm resistance, ±10% tolerance, 1-turn wirewound construction, 300° rotation, solder lug termination, and panel mount configuration. These matching parameters ensure functional equivalence in existing circuit designs.

Frequently Asked Questions (FAQ)

Q: Can the RLS150E directly replace the RT100AL1500KB in existing designs?

A: Yes. Both components share identical resistance value, tolerance, resistive material, number of turns, rotation angle, termination style, and mounting type. The RLS150E's higher power rating (150W versus 100W) is a compatible enhancement.

Q: What is the significance of the RLS150E being an active product versus the RT100AL1500KB being obsolete?

A: Active product status ensures ongoing availability, consistent manufacturing processes, and access to current quality certifications. The obsolete status of the RT100AL1500KB indicates discontinued production and potential supply constraints.

Q: Does the RLS150E meet current regulatory standards?

A: Yes. The RLS150E carries ROHS3 compliance certification, meeting current environmental and regulatory requirements for electronic component manufacturing and use.

Q: Are there mechanical differences between these components?

A: Minor dimensional variations exist in actuator specifications (length and diameter) and bushing thread configuration. Both components maintain panel mount compatibility with 300° rotation and solder lug termination. Physical mounting verification is recommended for space-constrained applications.

Q: What is the tolerance specification for both components?

A: Both the RT100AL1500KB and RLS150E maintain ±10% tolerance on the 150 Ohm resistance value, ensuring equivalent precision in circuit applications.