RT100AS3300KB Equivalent & Substitute Parts

Part Overview

The RT100AS3300KB is a 330 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 component sourcing.

Substiute Parts

RT100AS3300KB

Vishay SferniceIn Stock: 1156RT100AS3300KB Datasheet

Current PartRFQ

RKS300E

OhmiteIn Stock: 864RKS300E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The RKS300E from Ohmite qualifies as a manufacturer-recommended substitute based on alignment of critical electrical and mechanical parameters. Substitution eligibility is determined by the following criteria:

• Resistance value within tolerance band (300 Ohms vs. 330 Ohms, both within ±10% tolerance specification)
• Identical power rating (100W)
• Matching wirewound resistive material
• Single-turn adjustment mechanism
• Panel mount configuration
• Solder lug termination
• 300° rotation specification
• ±10% tolerance match

The RKS300E maintains functional equivalence for applications requiring high-power potentiometric adjustment in panel-mounted configurations.

Parameter Comparison

Engineering Selection Recommendations

The RKS300E is the designated manufacturer-recommended substitute for the obsolete RT100AS3300KB. Selection of the RKS300E provides the following advantages:

• Active product status ensures ongoing availability and supply chain continuity
• ROHS3 compliance certification meets current environmental and regulatory standards
• Electrical specifications maintain functional equivalence within specified tolerance bands
• Mechanical interface compatibility confirmed through matching mounting, termination, and actuator specifications

The 30 Ohm resistance differential (330 Ohms vs. 300 Ohms) remains within the ±10% tolerance specification of both components, permitting direct substitution in applications where the potentiometer functions as a load resistor or adjustment element within a tolerance-accepting circuit design.

Frequently Asked Questions (FAQ)

Q: Can the RKS300E directly replace the RT100AS3300KB in existing assemblies?

A: Yes. Both components share identical electrical ratings (100W power, ±10% tolerance), matching wirewound construction, single-turn adjustment, panel mount configuration, and solder lug termination. The 30 Ohm resistance difference falls within the tolerance specification of both parts.

Q: What is the significance of the resistance value difference?

A: The RT100AS3300KB specifies 330 Ohms while the RKS300E specifies 300 Ohms. Both values are within their respective ±10% tolerance bands, and the 9% differential between nominal values is acceptable for potentiometric applications where the component functions within a tolerance-accepting circuit design.

Q: Why is the RT100AS3300KB classified as obsolete?

A: Obsolete status indicates the component is no longer manufactured by Vishay Sfernice. The RKS300E, maintained in active production by Ohmite, provides functional continuity for applications requiring equivalent 100W wirewound potentiometric adjustment.

Q: Are there packaging differences between these components?

A: The RT100AS3300KB packaging specification is not provided in the technical data. The RKS300E is supplied in bulk packaging. Verify packaging requirements for your specific application before procurement.

Q: Does the RKS300E meet current regulatory standards?

A: Yes. The RKS300E carries ROHS3 compliance certification, meeting current environmental and regulatory requirements for electronic component manufacturing and use.