RT100ASF1001KB Equivalent & Substitute Parts

Part Overview

The RT100ASF1001KB is a 1k 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 functionally equivalent alternatives essential for ongoing system maintenance and new design implementations. Substitute parts must maintain identical electrical specifications and mechanical compatibility to ensure direct replacement capability.

Substiute Parts

RT100ASF1001KB

Vishay SferniceIn Stock: 1036RT100ASF1001KB Datasheet

Current PartRFQ

RKS1K0E

OhmiteIn Stock: 917RKS1K0E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RT100ASF1001KB is based on strict equivalence across critical electrical and mechanical parameters. The following parameters define acceptable substitute relationships:

• Resistance value: 1k Ohm (exact match required)
• Power rating: 100W (exact match required)
• Resistive material: Wirewound (exact match required)
• Number of turns: 1.0 (exact match required)
• Tolerance: ±10% (exact match required)
• Mounting type: Panel Mount (exact match required)
• Termination style: Solder Lug (exact match required)
• Rotation: 300° (exact match required)
• Number of gangs: 1 (exact match required)

The RKS1K0E from Ohmite meets all specified electrical and mechanical requirements for direct substitution.

Parameter Comparison

Engineering Selection Recommendations

The RKS1K0E is the qualified substitute for the RT100ASF1001KB. The primary advantage of this substitution is product availability: the original RT100ASF1001KB is obsolete, while the RKS1K0E maintains active production status with confirmed inventory. Both components share identical electrical specifications (1k Ohm, 100W, ±10% tolerance, wirewound construction) and mechanical compatibility (panel mount, solder lug termination, 300° rotation, single turn, single gang configuration).

The RKS1K0E carries ROHS3 compliance certification, providing additional environmental and regulatory alignment for modern applications. Physical dimensions differ slightly (actuator length and diameter, bushing thread specification), but these variations do not affect functional substitution in standard panel mount potentiometer applications.

Frequently Asked Questions (FAQ)

Q: Can the RKS1K0E directly replace the RT100ASF1001KB in existing designs?

A: Yes. Both components meet identical electrical and mechanical specifications for the critical parameters governing potentiometer function: 1k Ohm resistance, 100W power rating, wirewound construction, 1-turn configuration, ±10% tolerance, panel mount installation, and solder lug termination. Physical dimension variations in actuator geometry do not prevent direct functional replacement.

Q: What is the primary reason for substitution?

A: The RT100ASF1001KB is classified as obsolete. The RKS1K0E is an active production component from Ohmite with confirmed inventory availability, ensuring supply chain continuity.

Q: Are there compliance differences between these parts?

A: The RKS1K0E is ROHS3 compliant, while the RT100ASF1001KB carries an obsolete designation. For applications requiring environmental compliance certification, the RKS1K0E provides current regulatory alignment.

Q: Do the actuator dimension differences affect compatibility?

A: Actuator length (RT100ASF1001KB: 25.00mm vs. RKS1K0E: 22.23mm) and diameter (RT100ASF1001KB: 6.00mm vs. RKS1K0E: 6.35mm) represent minor physical variations. These differences do not impact electrical performance or standard panel mount installation procedures. Verify mechanical clearance in confined mounting spaces if applicable.

Q: What packaging is available for the RKS1K0E?

A: The RKS1K0E is supplied in bulk packaging, with 820 pieces currently in stock.