Equivalent & Substitute Parts for Bourns 3540S-1-203

Part Overview

The Bourns 3540S-1-203 is a 20kΩ wirewound potentiometer rated at 2W with linear taper and panel mount configuration. This component is classified as obsolete, which necessitates identification of active equivalent parts to maintain supply chain continuity for applications requiring this specification. The 3540S series provides precision adjustment capability through a 10-turn wirewound design with solder lug termination suitable for panel-mounted control applications.

Substiute Parts

3540S-1-203

Bourns Inc.In Stock: 9523540S-1-203 Datasheet

Current PartRFQ

3540S-1-203L

Bourns Inc.In Stock: 12713540S-1-203L Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3540S-1-203 is determined by matching the following critical parameters: resistance value (20kΩ), power rating (2W), taper characteristic (linear), number of turns (10), resistive material (wirewound), termination style (solder lug), and mounting configuration (panel mount). The 3540S-1-203L qualifies as a direct substitute because it maintains identical electrical specifications, mechanical dimensions, and functional characteristics while differing only in product status and regulatory compliance classification.

Parameter Comparison

Engineering Selection Recommendations

The 3540S-1-203L is the direct equivalent for the obsolete 3540S-1-203. Selection of the 3540S-1-203L is appropriate for new designs and component replenishment due to its active product status and ROHS3 compliance. The 3540S-1-203L maintains full electrical and mechanical compatibility with the original specification while providing improved regulatory alignment for applications subject to RoHS and REACH requirements. Existing designs utilizing the 3540S-1-203 can transition to the 3540S-1-203L without circuit modification or performance degradation.

Frequently Asked Questions (FAQ)

Q: Can the 3540S-1-203L be used as a direct replacement for the 3540S-1-203?

A: Yes. The 3540S-1-203L is electrically and mechanically identical to the 3540S-1-203. All functional parameters, dimensional specifications, and performance characteristics are equivalent. The primary differences are product status (active versus obsolete) and regulatory compliance certifications.

Q: What is the difference between the two part numbers?

A: The suffix "L" in the 3540S-1-203L designation indicates ROHS3 compliance and REACH applicability. The 3540S-1-203 is classified as obsolete and RoHS non-compliant. Both parts are manufactured by Bourns Inc. within the 3540S series and share identical electrical specifications and mechanical construction.

Q: Are there packaging differences between these parts?

A: The 3540S-1-203 is supplied without specified packaging designation, while the 3540S-1-203L is packaged in trays. This packaging difference does not affect component functionality or performance in circuit applications.

Q: What parameters must match for substitution eligibility?

A: Critical matching parameters include resistance value (20kΩ), power rating (2W), taper type (linear), number of turns (10), resistive material (wirewound), termination style (solder lug), and panel mount configuration. All these parameters are identical between the 3540S-1-203 and 3540S-1-203L.

Q: Is the 3540S-1-203L suitable for new product designs?

A: Yes. The 3540S-1-203L is classified as an active product with ROHS3 compliance, making it the appropriate choice for new designs requiring a 20kΩ 2W wirewound linear potentiometer with panel mount configuration and solder lug termination.