RT100ASF4700KB Equivalent & Substitute Parts

Part Overview

The RT100ASF4700KB is a 470 Ohm, 100W wirewound potentiometer manufactured by Vishay Sfernice, designed for panel mount applications with a 1-turn adjustment mechanism and solder lug termination. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance, repair, and new design implementations where this specification remains applicable.

Substiute Parts

RT100ASF4700KB

Vishay SferniceIn Stock: 1095RT100ASF4700KB Datasheet

Current PartRFQ

RKS500E

OhmiteIn Stock: 1151RKS500E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RT100ASF4700KB is determined by matching the following critical parameters: power rating (100W), resistive material (wirewound), number of turns (1), termination style (solder lug), mounting type (panel mount), and rotation angle (300°). The RKS500E from Ohmite meets these core functional requirements. The resistance value differs by 30 Ohms (500 Ohms versus 470 Ohms), which falls within acceptable tolerance ranges for general potentiometer applications where the primary function is load adjustment rather than precision resistance specification. Both components maintain identical power handling capacity, mechanical interface compatibility, and electrical termination methodology.

Parameter Comparison

Engineering Selection Recommendations

The RKS500E serves as the primary equivalent for the RT100ASF4700KB. Selection of this substitute is supported by: (1) Active product status ensuring continued availability and supply chain reliability, (2) ROHS3 compliance meeting current environmental and regulatory standards, (3) identical power handling and mechanical interface specifications, and (4) matching electrical termination and mounting architecture. The 30 Ohm resistance differential (6% variance) remains within the ±10% tolerance band of both components and does not compromise functional performance in load adjustment applications. Direct mechanical and electrical substitution is feasible without circuit redesign or mechanical modification.

Frequently Asked Questions (FAQ)

Q: Can the RKS500E directly replace the RT100ASF4700KB without modification? A: Yes. Both components share identical power ratings (100W), termination styles (solder lug), mounting types (panel mount), rotation angles (300°), and number of turns (1). Mechanical and electrical interfaces are compatible. The 30 Ohm resistance difference falls within the ±10% tolerance specification of both parts.

Q: What is the significance of the resistance value difference between 470 Ohms and 500 Ohms? A: The 6% variance between 470 Ohms and 500 Ohms is absorbed within the ±10% tolerance band declared for both potentiometers. In load adjustment and general control applications, this difference does not introduce functional degradation. Applications requiring precision resistance values should verify circuit performance under the 500 Ohm specification.

Q: Why is the RT100ASF4700KB classified as obsolete? A: Obsolete status indicates the manufacturer has discontinued production. The RKS500E, with active product status, ensures continued component availability and manufacturer support for new procurements and system repairs.

Q: Are there packaging or inventory considerations for the RKS500E? A: The RKS500E is supplied in bulk packaging with 1084 pieces available in stock. Verify packaging requirements for your application, as the original RT100ASF4700KB may have specified alternative packaging configurations.

Q: Does the RKS500E meet current regulatory compliance standards? A: Yes. The RKS500E is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The original RT100ASF4700KB compliance status is not specified in available documentation.