RT100AL1000KB Equivalent & Substitute Parts

Part Overview

The RT100AL1000KB is a 100 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, repair, and new design implementations where equivalent functionality is required.

Substiute Parts

RT100AL1000KB

Vishay SferniceIn Stock: 944RT100AL1000KB Datasheet

Current PartRFQ

RKS100E

OhmiteIn Stock: 919RKS100E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RT100AL1000KB is based on matching the following critical electrical and mechanical parameters:

• Resistance value: 100 Ohms
• Power dissipation capability: 100W
• Resistive element type: Wirewound construction
• Termination method: Solder Lug
• Mounting configuration: Panel Mount
• Rotation angle: 300°
• Number of turns: 1
• Tolerance: ±10%

The RKS100E from Ohmite meets all these core substitution criteria. While minor differences exist in actuator geometry and taper specification, these do not affect the electrical substitutability or functional compatibility in applications requiring the RT100AL1000KB.

Parameter Comparison

Engineering Selection Recommendations

The RKS100E is the qualified substitute for the RT100AL1000KB based on electrical and mechanical parameter equivalence. The primary advantage of selecting the RKS100E is its active product status, ensuring continued availability and supply chain reliability. The RKS100E carries ROHS3 compliance certification, meeting modern environmental and regulatory requirements for component procurement.

Physical differences in actuator design (flatted versus round) and bushing thread specification (3/8-32) do not impact electrical performance or core functional compatibility. Integration into existing designs requires verification of mechanical fit within the panel mount cavity and actuator clearance envelope.

Frequently Asked Questions (FAQ)

Q: Can the RKS100E directly replace the RT100AL1000KB in existing applications?

A: Yes, the RKS100E is electrically equivalent to the RT100AL1000KB. Both components share identical resistance, power rating, tolerance, number of turns, resistive material, termination style, mounting type, and rotation specifications. Mechanical fit verification is required due to differences in actuator geometry and bushing thread configuration.

Q: What is the primary reason for substitution?

A: The RT100AL1000KB is classified as obsolete. The RKS100E is an active product from Ohmite, providing assured long-term availability and supply continuity.

Q: Are there compliance differences between these parts?

A: The RKS100E is ROHS3 compliant, while the RT100AL1000KB compliance status is not specified. For applications requiring environmental compliance certification, the RKS100E meets current regulatory standards.

Q: Do the actuator differences affect electrical performance?

A: No. The actuator type (round versus flatted) and actuator length/diameter variations are mechanical design features that do not alter the electrical characteristics or resistance performance of the potentiometer.

Q: What packaging is available for the RKS100E?

A: The RKS100E is supplied in bulk packaging, with 859 pieces available in new original stock condition.