Bourns 3386F-1-102T Trimmer Potentiometer - Equivalent & Substitute Parts

Part Overview

The Bourns 3386F-1-102T is a 1 kOhm, 0.5W through-hole trimmer potentiometer from the Trimpot® 3386 sealed series. This component is an active product designed for applications requiring precision resistive adjustment in compact form factors. The device features cermet resistive material, top finger adjustment, and PC pin termination suitable for printed circuit board integration. Substitute parts are identified when equivalent electrical specifications, mechanical compatibility, and functional performance parameters align with the original component.

Key Parameters

Parameter	Value	Specification Type
Resistance	1 kOhms	Electrical
Power Rating	0.5W (1/2W)	Electrical
Tolerance	±10%	Electrical
Temperature Coefficient	±100ppm/°C	Electrical
Number of Turns	1	Functional
Resistive Material	Cermet	Material
Mounting Type	Through Hole	Mechanical
Termination Style	PC Pins	Mechanical
Face Dimension	Square - 0.375" x 0.375" (9.53mm x 9.53mm)	Mechanical

Substitute Part Grouping Explanation

Substitution eligibility for the Bourns 3386F-1-102T is determined by strict alignment of the following parameters:

Electrical Equivalence Requirements:

Resistance value: 1 kOhms
Power rating: 0.5W (1/2W)
Tolerance: ±10%
Temperature coefficient: ±100ppm/°C
Number of turns: 1

Mechanical Compatibility Requirements:

Mounting type: Through Hole
Termination style: PC Pins
Resistive material: Cermet
Face dimension tolerance: Square format within acceptable PCB layout margins

The Vishay Spectrol M63M102KB30T607 meets all electrical equivalence requirements and mechanical compatibility criteria. The primary functional difference is adjustment type (side adjustment versus top finger adjustment), which does not affect electrical performance or PCB integration compatibility. Face dimension variance (10.03mm versus 9.53mm) remains within acceptable mechanical tolerance for standard PCB footprints.

Parameter Comparison

Parameter	Bourns 3386F-1-102T	Vishay Spectrol M63M102KB30T607	Match Status
Resistance	1 kOhms	1 kOhms	Equivalent
Power Rating	0.5W (1/2W)	0.5W (1/2W)	Equivalent
Tolerance	±10%	±10%	Equivalent
Temperature Coefficient	±100ppm/°C	±100ppm/°C	Equivalent
Number of Turns	1	1	Equivalent
Resistive Material	Cermet	Cermet	Equivalent
Mounting Type	Through Hole	Through Hole	Equivalent
Termination Style	PC Pins	PC Pins	Equivalent
Face Dimension	0.375" x 0.375" (9.53mm x 9.53mm)	0.395" x 0.395" (10.03mm x 10.03mm)	Compatible
Adjustment Type	Top Finger Adjustment	Side Adjustment	Different
RoHS Status	RoHS non-compliant	ROHS3 Compliant	Different
Product Status	Active	Active	Equivalent

Engineering Selection Recommendations

Bourns 3386F-1-102T Selection Criteria:

Primary choice when top finger adjustment access is required by design specification
Suitable for applications where RoHS non-compliance is acceptable
Established supply chain with 903 units in current inventory

Vishay Spectrol M63M102KB30T607 Selection Criteria:

Preferred when ROHS3 compliance is a design or regulatory requirement
Applicable when side adjustment mechanism meets functional requirements
Higher inventory availability (1434 units) supports extended production runs
REACH unaffected status provides regulatory advantage in certain markets

Both components satisfy identical electrical performance requirements and through-hole PCB integration specifications. Selection between these parts depends on adjustment mechanism accessibility requirements and regulatory compliance mandates specific to the application.

Frequently Asked Questions (FAQ)

Q: Can the Vishay Spectrol M63M102KB30T607 directly replace the Bourns 3386F-1-102T in existing PCB designs?

A: Electrical substitution is valid. The 0.5mm increase in face dimension (10.03mm versus 9.53mm) is mechanically compatible with standard PCB footprints. Adjustment type differs (side versus top), which may affect operator access depending on enclosure design. Verify adjustment mechanism accessibility in your specific application before implementation.

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

A: Top finger adjustment (Bourns 3386F-1-102T) allows vertical access to the adjustment screw. Side adjustment (Vishay Spectrol M63M102KB30T607) requires horizontal access. This affects only the physical adjustment procedure and does not impact electrical performance or circuit functionality.

Q: Does RoHS compliance status affect electrical performance?

A: No. RoHS compliance status reflects manufacturing process and material sourcing standards, not electrical characteristics. Both components deliver identical resistance, power rating, tolerance, and temperature coefficient specifications.

Q: Are the PC pin terminations compatible between these two parts?

A: Yes. Both components use PC pin termination style suitable for through-hole PCB mounting. Pin spacing and electrical connection methodology are equivalent.

Q: What inventory considerations apply to these substitutes?

A: The Bourns 3386F-1-102T has 903 units in stock. The Vishay Spectrol M63M102KB30T607 has 1434 units available. For high-volume production, the Vishay part offers greater inventory depth.

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