RT100AL2700KB Equivalent & Substitute Parts

Part Overview

The RT100AL2700KB is a 270 Ohm, 100W wirewound potentiometer manufactured by Vishay Sfernice, designed for panel mount applications with a 1-turn rotation and solder lug termination. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing system maintenance and new design implementations where equivalent functionality is required.

Substiute Parts

RT100AL2700KB

Vishay SferniceIn Stock: 676RT100AL2700KB Datasheet

Current PartRFQ

RKS300E

OhmiteIn Stock: 864RKS300E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RT100AL2700KB is based on the following critical parameters that must be maintained or exceeded:

• Power Rating: 100W minimum (electrical safety and thermal performance)
• Resistive Material: Wirewound (load handling and stability characteristics)
• Termination Style: Solder Lug (circuit integration compatibility)
• Mounting Type: Panel Mount (mechanical installation requirements)
• Number of Turns: 1 (control resolution and mechanical design)
• Rotation: 300° (operational range)
• Tolerance: ±10% (circuit performance specifications)

The RKS300E from Ohmite meets these core substitution criteria. The resistance value differs (300 Ohms versus 270 Ohms), representing a 10% increase within the specified tolerance band, making it functionally equivalent for applications where the potentiometer serves as a variable load or adjustment element.

Parameter Comparison

Engineering Selection Recommendations

The RKS300E is the designated manufacturer-recommended substitute for the RT100AL2700KB. Selection of this alternative is supported by:

• Product Status: The RKS300E maintains active production status, ensuring long-term availability and supply chain continuity compared to the obsolete RT100AL2700KB.
• Regulatory Compliance: The RKS300E carries ROHS3 compliance certification, meeting current environmental and material restriction standards for electronic components.
• Electrical Equivalence: Both components maintain identical power ratings (100W), termination methods (solder lug), and mechanical mounting configurations (panel mount), ensuring direct functional replacement in existing circuit designs.
• Resistance Tolerance: The 300 Ohm rating of the RKS300E falls within the ±10% tolerance specification of the original 270 Ohm component, maintaining circuit performance parameters.

Frequently Asked Questions (FAQ)

Q: Can the RKS300E be used as a direct replacement for the RT100AL2700KB in existing designs?

A: Yes. Both components share identical power ratings (100W), termination styles (solder lug), mounting configurations (panel mount), and rotation specifications (300°). The 30 Ohm resistance difference (270 Ohms to 300 Ohms) represents a 10% variance, which falls within the specified tolerance band of both components.

Q: What is the primary reason for substitution?

A: The RT100AL2700KB is classified as obsolete. The RKS300E is an active production component from Ohmite, providing assured availability and supply chain stability.

Q: Are there mechanical compatibility considerations?

A: Both components are panel mount potentiometers with solder lug termination. Physical dimensions differ slightly (actuator length and diameter specifications vary), but these differences do not affect electrical performance or standard panel mounting applications. Mechanical fit should be verified for applications with tight dimensional constraints.

Q: Does the RKS300E meet current regulatory requirements?

A: Yes. The RKS300E carries ROHS3 compliance certification, meeting current environmental and material restriction standards. The original RT100AL2700KB does not specify RoHS status.

Q: What parameters must remain constant for substitution validity?

A: Power rating (100W), resistive material (wirewound), termination style (solder lug), mounting type (panel mount), number of turns (1), and rotation angle (300°) must be maintained. Resistance tolerance of ±10% permits the 270 Ohm to 300 Ohm variation.