Bourns 3386F-1-204TLF Trimmer Potentiometer - Equivalent & Substitute Parts

Part Overview

The Bourns 3386F-1-204TLF is a 200 kOhm, 0.5W through-hole trimmer potentiometer with cermet resistive material, designed for PC pin termination and top finger adjustment. This component is part of the Trimpot® 3386 sealed series and maintains active product status with full ROHS3 compliance. Substitute parts are identified based on matching electrical specifications, mechanical compatibility, and termination requirements to ensure functional equivalence in circuit applications.

Substiute Parts

3386F-1-204TLF

Bourns Inc.In Stock: 18073386F-1-204TLF Datasheet

Current PartRFQ

M63M204KB30T607

Vishay SpectrolIn Stock: 1050M63M204KB30T607 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 3386F-1-204TLF are qualified based on the following critical parameters:

• Electrical Match: Resistance value (200 kOhms), power rating (0.5W), tolerance (±10%), and temperature coefficient (±100ppm/°C) must be identical
• Mechanical Compatibility: Through-hole mounting with PC pin termination required
• Material Specification: Cermet resistive material for performance consistency
• Turn Count: Single-turn adjustment mechanism
• Compliance: ROHS3 compliance and active product status

The Vishay Spectrol M63M204KB30T607 meets all electrical and material requirements. The primary functional difference is the adjustment mechanism (side adjustment versus top finger adjustment) and minor dimensional variation (0.395" x 0.395" versus 0.375" x 0.375"), which may affect PCB layout compatibility depending on application constraints.

Parameter Comparison

Engineering Selection Recommendations

Both the Bourns 3386F-1-204TLF and Vishay Spectrol M63M204KB30T607 are active products with ROHS3 compliance and identical electrical specifications. Selection between these parts should be based on:

1. Adjustment Accessibility: The 3386F-1-204TLF provides top finger adjustment, while the M63M204KB30T607 uses side adjustment. Choose based on PCB layout and operator access requirements.

2. PCB Footprint Constraints: The M63M204KB30T607 has a slightly larger face dimension (0.395" versus 0.375"). Verify PCB layout compatibility before substitution.

3. Inventory and Lead Time: Both parts are in active stock. Selection may depend on supply chain availability and delivery requirements.

4. Regulatory Compliance: Both parts meet ROHS3 and EAR99 export control requirements.

Frequently Asked Questions (FAQ)

Q: Can the Vishay Spectrol M63M204KB30T607 directly replace the Bourns 3386F-1-204TLF?

A: Electrical substitution is valid due to matching resistance, power rating, tolerance, and temperature coefficient. However, the side adjustment mechanism and larger face dimension require PCB layout verification before implementation.

Q: What is the significance of the adjustment type difference?

A: Top finger adjustment (3386F-1-204TLF) allows vertical access for tuning, while side adjustment (M63M204KB30T607) requires horizontal access. This affects operator accessibility and PCB design clearance requirements.

Q: Are the dimensional differences critical?

A: The 0.02" (0.5mm) increase in face dimension for the M63M204KB30T607 may impact PCB routing and component spacing. Verify footprint compatibility in your specific application.

Q: Do both parts have the same moisture sensitivity?

A: The 3386F-1-204TLF lists MSL as Not Applicable, while the M63M204KB30T607 specifies MSL 1 (Unlimited). Both are suitable for standard handling and storage conditions.

Q: Are there any compliance differences between these parts?

A: Both parts are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control. No compliance barriers exist for substitution.