3386U-1-102ALF Trimmer Potentiometer Equivalent & Substitute Parts

Part Overview

The 3386U-1-102ALF is a 1 kOhm, 0.5W through-hole trimmer potentiometer manufactured by Bourns Inc. under the Trimpot® 3386 series. This sealed cermet trimmer features top adjustment, PC pin termination, and a square 0.375" x 0.375" form factor. The part is Active status and ROHS3 compliant. Equivalent and substitute parts are identified when applications require alternative packaging, form factors, or sourcing options while maintaining core electrical specifications.

Substiute Parts

3386U-1-102ALF

Bourns Inc.In Stock: 11563386U-1-102ALF Datasheet

Current PartRFQ

25PR1KLF

TT Electronics/BIIn Stock: 1231025PR1KLF Datasheet

SimilarRFQ

72PMR1KLF

TT Electronics/BIIn Stock: 204472PMR1KLF Datasheet

SimilarRFQ

72PR1KLF

TT Electronics/BIIn Stock: 200572PR1KLF Datasheet

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82PR1KLF

TT Electronics/BIIn Stock: 290082PR1KLF Datasheet

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M63P102KB40

Vishay SpectrolIn Stock: 1152M63P102KB40 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by matching the following core parameters: resistance value (1 kOhms), power rating (0.5W), tolerance (±10%), temperature coefficient (±100ppm/°C), number of turns (1), resistive material (Cermet), mounting type (Through Hole), and termination style (PC Pins). All substitute parts listed meet these electrical and functional requirements. Variations in adjustment type (top vs. side), form factor (square vs. round), and packaging do not affect electrical compatibility but may impact physical board layout and assembly considerations.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain identical electrical specifications and are Active status components. Selection between substitutes depends on physical constraints and compliance requirements:

For direct form factor replacement with identical top adjustment and square 0.375" x 0.375" footprint, 72PMR1KLF and 72PR1KLF are suitable alternatives. Both are ROHS3 compliant and available in bulk packaging.

For space-constrained applications, 25PR1KLF offers a smaller square footprint (0.270" x 0.270") with top adjustment and RoHS compliance, though in tube packaging. The 82PR1KLF provides a round form factor (0.250" diameter) with ROHS3 compliance for applications where circular geometry is preferred.

The M63P102KB40 (Vishay Spectrol) is electrically equivalent but features side adjustment instead of top adjustment, resulting in a slightly larger square footprint (0.395" x 0.395"). This part is suitable only when side adjustment orientation is compatible with board layout.

All parts carry ECCN EAR99 and HTSUS 8533.40.8050 classifications and are REACH unaffected.

Frequently Asked Questions (FAQ)

Q: Can 25PR1KLF replace 3386U-1-102ALF in a design? A: Yes, electrically. The 25PR1KLF matches all core electrical parameters (1 kOhm, 0.5W, ±10% tolerance, ±100ppm/°C, cermet, top adjustment). However, the smaller footprint (0.270" x 0.270" vs. 0.375" x 0.375") requires PCB layout verification to confirm physical compatibility.

Q: What is the difference between 72PMR1KLF and 72PR1KLF? A: Both parts are electrically and physically identical (1 kOhm, 0.5W, square 0.375" x 0.375", top adjustment, ROHS3). The designation difference reflects internal series variations within TT Electronics/BI product lines. Both are suitable direct replacements for the 3386U-1-102ALF.

Q: Why is M63P102KB40 listed as a substitute if it has side adjustment? A: M63P102KB40 is electrically equivalent and meets all core specifications. However, side adjustment differs from the 3386U-1-102ALF top adjustment orientation. This part is a substitute only when board layout and assembly process accommodate side-mounted adjustment screws.

Q: Are all substitutes ROHS3 compliant? A: Four of five substitutes (72PMR1KLF, 72PR1KLF, 82PR1KLF, M63P102KB40) are ROHS3 compliant. The 25PR1KLF is RoHS compliant but not specifically ROHS3 designated. Verify compliance requirements for your application.

Q: What packaging options are available? A: The 3386U-1-102ALF is supplied in Tape & Box. Substitutes are available in Tube (25PR1KLF) or Bulk (72PMR1KLF, 72PR1KLF, 82PR1KLF, M63P102KB40). Packaging selection affects order quantities and handling procedures.