RT100AS6800KB Equivalent & Substitute Parts

Part Overview

The RT100AS6800KB is a 680 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

RT100AS6800KB

Vishay SferniceIn Stock: 964RT100AS6800KB Datasheet

Current PartRFQ

RNS700E

OhmiteIn Stock: 695RNS700E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RT100AS6800KB is determined by the following critical parameters: resistance value within tolerance range, power dissipation capability, wirewound construction, single-turn adjustment, panel mount configuration, and solder lug termination. The RNS700E from Ohmite meets these core functional requirements with the following considerations:

The RNS700E provides 700 Ohms resistance, which falls within the ±10% tolerance band of the original 680 Ohm specification (acceptable range: 612–748 Ohms). The substitute offers enhanced power handling at 300W versus the original 100W rating, providing superior thermal margin. Both components utilize wirewound resistive material, single-turn configuration, panel mount design, and solder lug termination, ensuring mechanical and electrical compatibility in the intended application context.

Parameter Comparison

Engineering Selection Recommendations

The RNS700E is the manufacturer-recommended substitute for the RT100AS6800KB. Selection of this alternative is supported by: (1) active product status ensuring continued availability and supply chain reliability, (2) resistance value within specified tolerance limits, (3) equivalent wirewound construction and single-turn configuration, (4) compatible panel mount and solder lug interface, and (5) RoHS3 compliance certification, which may be required for new designs or systems subject to environmental regulations.

The increased power rating of the RNS700E (300W versus 100W) provides additional thermal headroom and does not introduce incompatibility with the original application, as the substitute can accommodate the same or lower power dissipation requirements.

Frequently Asked Questions (FAQ)

Q: Is the RNS700E a direct replacement for the RT100AS6800KB?

A: The RNS700E is functionally equivalent within the specified tolerance and parameter ranges. The 700 Ohm resistance falls within the ±10% tolerance band of the 680 Ohm original specification. Both components share identical wirewound construction, single-turn adjustment, panel mount configuration, and solder lug termination. The higher power rating of the substitute does not prevent its use in applications designed for the original component.

Q: What is the resistance tolerance range for substitution?

A: Both the RT100AS6800KB and RNS700E are specified at ±10% tolerance. The original 680 Ohm component has an acceptable range of 612–748 Ohms. The substitute 700 Ohm component has an acceptable range of 630–770 Ohms. The 700 Ohm nominal value is within the original tolerance band, confirming substitution validity.

Q: Does the higher power rating of the RNS700E affect compatibility?

A: No. The RNS700E's 300W power rating exceeds the original 100W specification, providing additional thermal margin. This enhanced capability does not create incompatibility; the substitute can safely operate at the same or lower power levels as the original component.

Q: Are there packaging differences between these components?

A: The RT100AS6800KB is specified with standard packaging, while the RNS700E is supplied in bulk packaging. Both components maintain identical mechanical interfaces (panel mount, solder lug termination) and physical actuator compatibility for installation purposes.

Q: What compliance certifications apply to the substitute?

A: The RNS700E is RoHS3 compliant, meeting environmental and hazardous substance restrictions applicable to electronic components in regulated markets. The original RT100AS6800KB, being obsolete, may not carry current compliance certifications.