RT100AL6801KB Equivalent & Substitute Parts

Part Overview

The RT100AL6801KB is a 68k Ohm, 100W wirewound potentiometer manufactured by Vishay Sfernice in the RT100 series. This panel mount component features a 1-turn design with solder lug termination and 300° rotation. The product is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing maintenance, repair, and system support applications where this component is specified in legacy designs.

Substiute Parts

RT100AL6801KB

Vishay SferniceIn Stock: 1097RT100AL6801KB Datasheet

Current PartRFQ

RKS7K5E

OhmiteIn Stock: 1007RKS7K5E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The RKS7K5E from Ohmite is listed as the manufacturer-recommended substitute for the RT100AL6801KB. Substitution eligibility is determined by the following critical parameters:

• Power Rating: Both parts are rated at 100W, meeting thermal and load requirements
• Resistive Material: Both utilize wirewound construction, ensuring comparable frequency response and noise characteristics
• Termination Style: Both employ solder lug termination, maintaining electrical connection compatibility
• Mounting Type: Both are panel mount configurations
• Number of Turns: Both feature single-turn design
• Rotation: Both provide 300° rotation
• Tolerance: Both maintain ±10% tolerance specification

The RKS7K5E differs in resistance value (7.5k Ohm versus 68k Ohm) and includes a linear taper specification. These differences require circuit-level evaluation to confirm functional equivalence in the target application.

Parameter Comparison

Engineering Selection Recommendations

The RKS7K5E is the manufacturer-recommended substitute and is currently in active production status, ensuring availability for replacement applications. The component maintains electrical and mechanical compatibility across all critical parameters: 100W power rating, wirewound construction, solder lug termination, panel mount configuration, and 300° rotation.

The RKS7K5E achieves ROHS3 compliance, providing environmental and regulatory advantages over the obsolete RT100AL6801KB. The resistance value difference (7.5k Ohm versus 68k Ohm) and linear taper specification require verification against circuit requirements to confirm functional equivalence in the specific application context.

Frequently Asked Questions (FAQ)

Q: Can the RKS7K5E directly replace the RT100AL6801KB in all applications?

A: The RKS7K5E matches the RT100AL6801KB across all critical mechanical and electrical parameters: 100W power rating, wirewound resistive material, solder lug termination, panel mount configuration, and 300° rotation. However, the resistance value differs (7.5k Ohm versus 68k Ohm). Direct substitution is valid only when the circuit design accommodates this resistance change or when the application permits resistance value adjustment.

Q: What are the key compatibility factors for this substitution?

A: Compatibility is established through matching power rating (100W), resistive material (wirewound), termination style (solder lug), mounting type (panel mount), number of turns (1), and rotation angle (300°). These parameters ensure mechanical fit and electrical performance characteristics remain consistent.

Q: Why is the RT100AL6801KB obsolete?

A: The RT100AL6801KB is classified as obsolete by the manufacturer. The RKS7K5E is the active production alternative, ensuring long-term availability and supply chain continuity.

Q: Does the RKS7K5E meet current environmental standards?

A: Yes, the RKS7K5E is ROHS3 compliant, meeting current environmental and regulatory requirements. The original RT100AL6801KB does not specify RoHS compliance status.

Q: Are there mechanical differences between these components?

A: Both components are panel mount potentiometers with solder lug termination. The RKS7K5E specifies a round body (3.125" diameter) and includes a 3/8-32 bushing thread specification. Physical verification is recommended prior to installation in space-constrained applications.