RT100AS1502KB Equivalent & Substitute Parts

Part Overview

The RT100AS1502KB is a 15k Ohm wirewound potentiometer rated at 100W, manufactured by Vishay Sfernice as part of the RT100 series. This component is designed for panel mount applications with a 1-turn rotation and solder lug termination. The product is currently obsolete, making identification of suitable substitute components essential for ongoing maintenance, repair, and new design implementations where this specification remains applicable.

Substiute Parts

RT100AS1502KB

Vishay SferniceIn Stock: 827RT100AS1502KB Datasheet

Current PartRFQ

RJS15KE

OhmiteIn Stock: 987RJS15KE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RT100AS1502KB is determined by matching the following critical electrical and mechanical parameters:

Electrical Parameters:

• Resistance value: 15k Ohm (exact match required)
• Tolerance: ±10% (matching specification)
• Resistive material: Wirewound (required for power handling and stability)
• Number of turns: 1 (functional requirement)

Mechanical Parameters:

• Termination style: Solder Lug (interface requirement)
• Mounting type: Panel Mount (installation requirement)
• Number of gangs: 1 (circuit configuration)
• Rotation: 300° (operational range)

Power Consideration: The RT100AS1502KB is rated at 100W. Substitute components must meet or exceed this power rating to ensure equivalent thermal performance and reliability in the application circuit.

Parameter Comparison

Engineering Selection Recommendations

The RJS15KE from Ohmite is listed as the manufacturer-recommended substitute for the RT100AS1502KB. Both components share identical electrical specifications (15k Ohm, ±10% tolerance, 1-turn wirewound configuration) and mechanical interfaces (solder lug termination, panel mount, 300° rotation, single gang).

The primary difference is the power rating: the RJS15KE is rated at 50W compared to the original 100W specification. This reduction in power handling capability must be evaluated against the actual power dissipation requirements of the application. If the circuit operates within 50W thermal limits, the RJS15KE provides a direct functional substitute with the advantage of active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment.

Frequently Asked Questions (FAQ)

Q: Can the RJS15KE replace the RT100AS1502KB in all applications?

A: The RJS15KE matches all electrical and mechanical parameters of the RT100AS1502KB. However, the power rating difference (50W vs. 100W) requires verification that actual circuit power dissipation does not exceed 50W. If the application demands the full 100W thermal capacity, the RJS15KE is not suitable.

Q: What does the 1-turn specification mean for substitution?

A: Both the original and substitute components feature a single 300° rotation, indicating a 1-turn potentiometer. This parameter must remain constant for functional equivalence in circuits designed for single-turn adjustment range.

Q: Are the physical dimensions compatible between these parts?

A: Both components are panel mount wirewound potentiometers with solder lug termination. The RT100AS1502KB has an actuator diameter of 0.236" (6.00mm), while the RJS15KE has 0.250" (6.35mm). Panel mounting compatibility depends on the specific bushing and mounting hole design of the application. Mechanical verification is required.

Q: What is the significance of the RoHS3 compliance on the RJS15KE?

A: The RJS15KE carries ROHS3 certification, indicating compliance with current environmental and hazardous substance restrictions. The original RT100AS1502KB does not specify RoHS status. For applications subject to RoHS regulatory requirements, the RJS15KE provides documented compliance.

Q: Why is the RT100AS1502KB listed as obsolete?

A: Obsolete status indicates the component is no longer manufactured or supported by Vishay Sfernice. The RJS15KE, with active product status from Ohmite, ensures continued availability and technical support for new procurements and long-term supply chain stability.