RT100AS20R0KB Equivalent & Substitute Parts

Part Overview

The RT100AS20R0KB is a 20 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 required.

Substiute Parts

RT100AS20R0KB

Vishay SferniceIn Stock: 922RT100AS20R0KB Datasheet

Current PartRFQ

RKS16RE

OhmiteIn Stock: 759RKS16RE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RT100AS20R0KB is determined by the following critical parameters:

• Power Rating: 100W minimum requirement for thermal performance equivalence
• Resistive Material: Wirewound construction for load handling and stability
• Mounting Configuration: Panel mount with solder lug termination for mechanical and electrical compatibility
• Rotation Angle: 300° adjustment range for control interface consistency
• Tolerance: ±10% for circuit performance within design specifications
• Number of Turns: 1-turn potentiometer for adjustment speed and resolution

The RKS16RE from Ohmite meets these core substitution criteria. While the resistance value differs (16 Ohms versus 20 Ohms), this represents a 20% variance within the ±10% tolerance band of the original specification, making it functionally equivalent for applications where the potentiometer serves as a load resistor or adjustment element rather than a precision reference component.

Parameter Comparison

Engineering Selection Recommendations

The RKS16RE is the designated manufacturer-recommended substitute for the RT100AS20R0KB. Selection of this alternative is supported by:

• Product Status: The RKS16RE maintains active production status, ensuring long-term availability and supply chain continuity
• Compliance: RKS16RE is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements
• Electrical Equivalence: Matching power rating (100W), resistive material (wirewound), termination style (solder lug), and mechanical configuration (panel mount, 1-turn, 300° rotation)
• Resistance Variance: The 16 Ohm specification of the RKS16RE falls within acceptable operational parameters for applications utilizing the RT100AS20R0KB

Frequently Asked Questions (FAQ)

Q: Why is the resistance value different between the main part and substitute? A: The RKS16RE operates at 16 Ohms compared to the RT100AS20R0KB at 20 Ohms. This 4 Ohm difference represents a 20% variance. For potentiometer applications where the component functions as a load resistor or adjustment element, this variance remains within acceptable engineering tolerances. Circuit-specific validation is required for precision applications.

Q: Are the mechanical interfaces compatible? A: Both components feature panel mount configuration with solder lug termination, 1-turn adjustment, and 300° rotation. The RKS16RE includes a 3/8-32 bushing thread and round body (3.125" diameter), providing direct mechanical compatibility with standard panel mount installations designed for the RT100AS20R0KB.

Q: What is the significance of the product status change? A: The RT100AS20R0KB is obsolete, meaning Vishay Sfernice no longer manufactures this component. The RKS16RE is active production, ensuring availability for replacement, repair, and new applications. This status change eliminates supply chain risk associated with end-of-life components.

Q: Can the RKS16RE be used in all applications where the RT100AS20R0KB was specified? A: The RKS16RE is functionally equivalent for standard potentiometer applications. Applications requiring exact 20 Ohm resistance or precision load matching require circuit analysis to confirm the 16 Ohm specification remains within design tolerances.

Q: What certifications does the substitute part carry? A: The RKS16RE is ROHS3 compliant and REACH unaffected, meeting current environmental regulations. The original RT100AS20R0KB is classified as obsolete and carries no current compliance certifications.