Bourns 3386F-1-104T Trimmer Potentiometer - Equivalent & Substitute Parts

Part Overview

The Bourns 3386F-1-104T is a 100 kOhm, 0.5W through-hole trimmer potentiometer from the Trimpot® 3386 sealed series. This component is designed for PC pin termination with top finger adjustment and cermet resistive material. The part is currently active in production. Equivalent and substitute parts may be required due to inventory availability, regional sourcing constraints, or specific application requirements where alternative adjustment mechanisms or compliance certifications are acceptable.

Substiute Parts

3386F-1-104T

Bourns Inc.In Stock: 9823386F-1-104T Datasheet

Current PartRFQ

M63M104KB30T607

Vishay SpectrolIn Stock: 1722M63M104KB30T607 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Bourns 3386F-1-104T is determined by strict equivalence across the following critical parameters:

• Resistance value: 100 kOhms
• Power rating: 0.5W (1/2W)
• Tolerance: ±10%
• Temperature coefficient: ±100ppm/°C
• Number of turns: 1
• Resistive material: Cermet
• Mounting type: Through hole
• Termination style: PC pins

The Vishay Spectrol M63M104KB30T607 meets all electrical and material specifications. The primary difference is the adjustment mechanism (side adjustment versus top finger adjustment) and a minor dimensional variance (0.395" x 0.395" versus 0.375" x 0.375" face). These differences are mechanical in nature and do not affect electrical performance or functional equivalence in applications where the adjustment access point is not a design constraint.

Parameter Comparison

Engineering Selection Recommendations

The Bourns 3386F-1-104T is the primary specification for applications requiring top finger adjustment access. The Vishay Spectrol M63M104KB30T607 provides electrical equivalence and is suitable as a substitute when:

• Side adjustment access is acceptable for the application
• The 0.02" (0.5mm) increase in face dimension does not create PCB layout conflicts
• RoHS3 compliance is required or preferred
• REACH compliance is a regulatory requirement

Both parts share identical electrical characteristics, cermet construction, and PC pin termination. The choice between them depends on mechanical integration requirements and regulatory compliance needs specific to the end application.

Frequently Asked Questions (FAQ)

Q: Can the Vishay Spectrol M63M104KB30T607 be used as a direct replacement for the Bourns 3386F-1-104T?

A: Electrically, yes. Both parts have identical resistance, power rating, tolerance, temperature coefficient, and resistive material. The primary difference is the adjustment mechanism location (side versus top) and a minor dimensional increase. Mechanical compatibility must be verified for your specific PCB layout and adjustment access requirements.

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

A: The Bourns part features top finger adjustment, allowing vertical access to the trimmer screw. The Vishay part features side adjustment, requiring horizontal access. This affects how the component is adjusted during assembly and calibration. Select based on your PCB design and assembly process requirements.

Q: Does the face dimension difference affect electrical performance?

A: No. The 0.02" (0.5mm) increase in face dimension is purely mechanical and does not impact electrical characteristics. However, verify that the larger footprint does not create conflicts with adjacent components or PCB routing.

Q: What is the difference between RoHS non-compliant and ROHS3 compliant status?

A: The Bourns part does not meet RoHS directives. The Vishay part meets ROHS3 compliance, which restricts hazardous substances. Select the Vishay part if your application or market requires RoHS certification.

Q: Are both parts suitable for high-temperature applications?

A: Both parts have identical temperature coefficients of ±100ppm/°C and are rated for the same operating conditions. Temperature performance is equivalent between the two parts.

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

A: REACH Unaffected indicates the Vishay part does not contain substances of very high concern (SVHC) listed under REACH regulations. This is advantageous for applications subject to REACH compliance requirements. The Bourns part is REACH Affected, meaning it may contain listed substances.