Bourns 3386F-1-502T Trimmer Potentiometer - Equivalent & Substitute Parts

Part Overview

The Bourns 3386F-1-502T is an active, through-hole trimmer potentiometer from the Trimpot® 3386 Sealed series. This 5 kOhm, 0.5W cermet trimmer features top finger adjustment and PC pin termination, designed for applications requiring precision variable resistance in compact form factors. Substitute parts are identified based on matching electrical specifications, mechanical compatibility, and functional equivalence within the trimmer potentiometer category.

Substiute Parts

3386F-1-502T

Bourns Inc.In Stock: 7393386F-1-502T Datasheet

Current PartRFQ

M63M502KB30T607

Vishay SpectrolIn Stock: 1366M63M502KB30T607 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 3386F-1-502T are qualified based on the following critical parameters:

• Electrical Match: Resistance value (5 kOhms), power rating (0.5W), tolerance (±10%), and temperature coefficient (±100ppm/°C) must be identical
• Functional Match: Single-turn trimmer potentiometer with cermet resistive element
• Mechanical Compatibility: Through-hole mounting with PC pin termination
• Physical Envelope: Square form factor with comparable dimensions

The Vishay Spectrol M63M502KB30T607 meets all electrical and functional criteria. The primary difference is adjustment type (side adjustment versus top finger adjustment) and minor dimensional variation (0.395" x 0.395" versus 0.375" x 0.375"), which do not preclude functional substitution in applications where adjustment access method is not design-critical.

Parameter Comparison

Engineering Selection Recommendations

Primary Part (Bourns 3386F-1-502T): Select when top finger adjustment access is required by design specification and RoHS non-compliance is acceptable for the application.

Substitute Part (Vishay Spectrol M63M502KB30T607): Select when ROHS3 compliance is mandated, REACH unaffected status is required, or side adjustment access is compatible with board layout. The 0.02" dimensional increase (10.03mm versus 9.53mm) must be verified against PCB footprint constraints. This substitute is electrically and functionally equivalent for all resistance, power, tolerance, and temperature coefficient requirements.

Frequently Asked Questions (FAQ)

Q: Can the Vishay Spectrol M63M502KB30T607 directly replace the Bourns 3386F-1-502T in existing designs?

A: Electrical and functional equivalence is confirmed. Physical substitution requires verification that the 0.02" dimensional increase and side adjustment access method do not conflict with PCB layout, component spacing, or adjustment procedure requirements.

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

A: The Bourns part features top finger adjustment (accessible from above the component), while the Vishay part features side adjustment (accessible from the side). This affects board layout accessibility and adjustment procedure. Select based on design requirements.

Q: Why does the Bourns part show RoHS non-compliance while the Vishay part is ROHS3 compliant?

A: RoHS compliance status reflects the manufacturing process and material composition at the time of certification. The Vishay part meets current ROHS3 standards. For applications subject to RoHS regulations, the Vishay substitute is required.

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

A: No. Both parts are specified identically for resistance (5 kOhms), power rating (0.5W), tolerance (±10%), temperature coefficient (±100ppm/°C), and number of turns (1). Electrical performance is equivalent.

Q: What does REACH Unaffected status mean for the Vishay part?

A: REACH Unaffected indicates the part does not contain substances of very high concern (SVHC) listed under REACH regulations. This is advantageous for applications in regulated markets. The Bourns part shows REACH Affected status, indicating potential SVHC content.