RT100AS1R00KB Equivalent & Substitute Parts

Part Overview

The RT100AS1R00KB is a 1 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 suitable substitute parts essential for ongoing system maintenance and new design implementations. The RT100 series potentiometer provides precise resistive control in high-power applications requiring wirewound construction and single-turn adjustment capability.

Substiute Parts

RT100AS1R00KB

Vishay SferniceIn Stock: 843RT100AS1R00KB Datasheet

Current PartRFQ

RKS1R0E

OhmiteIn Stock: 1258RKS1R0E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RT100AS1R00KB is based on electrical and mechanical parameter alignment. The critical parameters determining substitutability are:

• Resistance value: 1 Ohm (exact match required)
• Power rating: 100W (exact match required)
• Resistive material: Wirewound (required for thermal and linearity characteristics)
• Termination style: Solder Lug (required for circuit integration)
• Mounting type: Panel Mount (required for mechanical fit)
• Number of turns: 1 (required for adjustment range)
• Rotation angle: 300° (required for mechanical compatibility)
• Tolerance: ±10% (acceptable range for substitution)

The RKS1R0E from Ohmite meets all critical electrical and mechanical parameters. While minor differences exist in actuator geometry and taper specification, these do not prevent functional substitution in applications where the RT100AS1R00KB was originally specified.

Parameter Comparison

Engineering Selection Recommendations

The RKS1R0E is the qualified substitute for the RT100AS1R00KB. Selection is based on the following factors:

• All critical electrical parameters match exactly: 1 Ohm resistance, 100W power rating, ±10% tolerance, wirewound construction, and 1-turn configuration
• All mechanical parameters align: solder lug termination, panel mount configuration, and 300° rotation
• The RKS1R0E maintains active product status, ensuring ongoing availability and supply chain continuity
• RoHS3 compliance and REACH unaffected status provide regulatory alignment for current manufacturing standards
• The substitute part is available in bulk packaging with confirmed inventory of 1215 units

Frequently Asked Questions (FAQ)

Q: Can the RKS1R0E directly replace the RT100AS1R00KB in existing assemblies?

A: Yes. The RKS1R0E meets all critical electrical and mechanical specifications. The 1 Ohm resistance, 100W power rating, wirewound construction, solder lug termination, and panel mount configuration are identical. Minor differences in actuator geometry do not affect functional performance in applications where the original part was specified.

Q: What is the primary reason for substitution?

A: The RT100AS1R00KB is classified as obsolete. The RKS1R0E is an active product with confirmed inventory availability, ensuring reliable sourcing for maintenance and new production.

Q: Are there differences in taper specification between these parts?

A: The RT100AS1R00KB does not specify a taper characteristic. The RKS1R0E is specified as linear taper. This difference does not affect substitutability in applications requiring single-turn potentiometer functionality.

Q: What are the actuator differences?

A: The RT100AS1R00KB features a round actuator with 0.984" (25.00mm) length and 0.236" (6.00mm) diameter. The RKS1R0E features a flatted actuator with 0.875" (22.23mm) length and 0.250" (6.35mm) diameter. Both are compatible with standard panel mount installations.

Q: Are there compliance differences?

A: The RKS1R0E carries RoHS3 compliance and REACH unaffected status, meeting current regulatory requirements. The RT100AS1R00KB, being obsolete, does not specify these certifications. The substitute part provides improved regulatory alignment.

Q: What packaging is available for the RKS1R0E?

A: The RKS1R0E is supplied in bulk packaging with 1215 units currently in stock.