Bourns 3540S-1-102 Wirewound Potentiometer Equivalent & Substitute Parts

Part Overview

The Bourns 3540S-1-102 is a 1kΩ 2W wirewound linear panel mount potentiometer with 10-turn adjustment capability and solder lug termination. This component is classified as obsolete, making identification of compatible alternatives essential for ongoing production support and design continuity. The 3540 series potentiometer is widely used in precision instrumentation, audio equipment, and industrial control applications where wirewound construction and linear taper characteristics are required.

Substiute Parts

3540S-1-102

Bourns Inc.In Stock: 7583540S-1-102 Datasheet

Current PartRFQ

3540S-1-102L

Bourns Inc.In Stock: 11383540S-1-102L Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3540S-1-102 is determined by strict equivalence across all critical electrical and mechanical parameters. The following parameters must match identically for direct substitution:

• Resistance value: 1kΩ
• Power rating: 2W
• Taper characteristic: Linear
• Number of turns: 10
• Resistive material: Wirewound
• Termination style: Solder Lug
• Mounting configuration: Panel Mount
• Bushing thread specification: 3/8-32
• Temperature coefficient: ±50ppm/°C
• Rotation angle: 3600°
• Tolerance: ±5%

The 3540S-1-102L meets all these criteria and qualifies as a direct equivalent. The primary distinction between these parts is product status and packaging configuration, not functional or electrical characteristics.

Parameter Comparison

Engineering Selection Recommendations

The 3540S-1-102L is the direct functional equivalent of the obsolete 3540S-1-102. All electrical and mechanical parameters are identical, ensuring drop-in compatibility in existing circuit designs and mechanical assemblies.

Selection between these parts should be based on the following factors:

Product Status: The 3540S-1-102 is obsolete and subject to availability constraints. The 3540S-1-102L maintains active production status, ensuring long-term supply chain reliability and design continuity.

Regulatory Compliance: The 3540S-1-102L is ROHS3 compliant, meeting current environmental and hazardous substance restrictions. The original 3540S-1-102 is RoHS non-compliant. For applications subject to RoHS requirements or future regulatory transitions, the 3540S-1-102L is the appropriate selection.

REACH Compliance: The 3540S-1-102L is REACH Affected, indicating compliance with European chemical safety regulations. The original part is REACH Unaffected. Applications requiring REACH compliance must use the 3540S-1-102L.

Packaging: The 3540S-1-102L is supplied in tray packaging, which may affect handling, storage, and assembly processes compared to standard packaging of the original part.

Frequently Asked Questions (FAQ)

Q: Can the 3540S-1-102L be used as a direct replacement for the 3540S-1-102?

A: Yes. All electrical and mechanical parameters are identical. The 3540S-1-102L is functionally equivalent and compatible with existing designs, circuit boards, and mechanical assemblies without modification.

Q: What is the primary reason to transition from the 3540S-1-102 to the 3540S-1-102L?

A: The 3540S-1-102 is obsolete. The 3540S-1-102L is in active production, ensuring availability and supply chain continuity. Additionally, the 3540S-1-102L meets current RoHS and REACH compliance requirements.

Q: Are there any electrical performance differences between these parts?

A: No. Resistance, power rating, temperature coefficient, tolerance, taper, number of turns, and all other electrical specifications are identical.

Q: Are there any mechanical or dimensional differences?

A: No. Actuator dimensions, bushing thread specification, mounting type, body size, and all other mechanical parameters are identical.

Q: Does the tray packaging of the 3540S-1-102L affect component performance?

A: No. Packaging affects handling, storage, and assembly logistics but does not alter electrical or mechanical performance. The component itself is identical.

Q: Are both parts suitable for the same operating temperature range?

A: Yes. Both parts have identical temperature coefficients of ±50ppm/°C and are suitable for the same thermal operating conditions.

Q: What compliance certifications should I consider when selecting between these parts?

A: The 3540S-1-102L is ROHS3 compliant and REACH Affected, meeting current environmental regulations. The 3540S-1-102 is RoHS non-compliant and REACH Unaffected. For new designs or applications subject to regulatory requirements, the 3540S-1-102L is the appropriate choice.