3386R-1-102 Trimmer Potentiometer Equivalent & Substitute Parts

Part Overview

The Bourns 3386R-1-102 is a 1 kOhm, 0.5W through-hole trimmer potentiometer with cermet resistive material, top adjustment, and PC pin termination. This component is classified as Active product status. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical compatibility, and functional performance within the allowed parameter tolerances for this trimmer potentiometer category.

Key Parameters

Parameter	Specification
Resistance Value	1 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

Substitute Part Grouping Explanation

Substitute parts for the 3386R-1-102 are grouped based on the following critical parameters that determine functional equivalence:

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
Termination style: PC Pins

Substitutes are classified into two categories:

Direct Equivalent: 3386R-1-102LF (Bourns Inc.) — identical electrical and mechanical specifications with RoHS3 compliance.

Functional Equivalents: 25PR1KLF, 72PMR1KLF, 72PR1KLF, and 82PR1KLF (TT Electronics/BI) — match all electrical parameters and core mechanical requirements with variations in physical form factor and adjustment type. M63P102KB40 (Vishay Spectrol) — matches electrical specifications with side adjustment instead of top adjustment.

Parameter Comparison

Part Number	Manufacturer	Resistance	Power (W)	Tolerance	Temp Coeff	Turns	Material	Adjustment	Termination	RoHS Status
3386R-1-102	Bourns Inc.	1 kΩ	0.5	±10%	±100ppm/°C	1	Cermet	Top	PC Pins	Non-compliant
3386R-1-102LF	Bourns Inc.	1 kΩ	0.5	±10%	±100ppm/°C	1	Cermet	Top	PC Pins	RoHS3 Compliant
25PR1KLF	TT Electronics/BI	1 kΩ	0.5	±10%	±100ppm/°C	1	Cermet	Top	PC Pins	RoHS Compliant
72PMR1KLF	TT Electronics/BI	1 kΩ	0.5	±10%	±100ppm/°C	1	Cermet	Top	PC Pins	RoHS3 Compliant
72PR1KLF	TT Electronics/BI	1 kΩ	0.5	±10%	±100ppm/°C	1	Cermet	Top	PC Pins	RoHS3 Compliant
82PR1KLF	TT Electronics/BI	1 kΩ	0.5	±10%	±100ppm/°C	1	Cermet	Top	PC Pins	RoHS3 Compliant
M63P102KB40	Vishay Spectrol	1 kΩ	0.5	±10%	±100ppm/°C	1	Cermet	Side	PC Pins	RoHS3 Compliant

Engineering Selection Recommendations

3386R-1-102LF is the primary direct equivalent. It maintains identical electrical and mechanical specifications to the original 3386R-1-102 while providing RoHS3 compliance and REACH unaffected status, making it suitable for new designs and applications requiring regulatory compliance.

25PR1KLF, 72PMR1KLF, 72PR1KLF, and 82PR1KLF are functional equivalents from TT Electronics/BI. All match the electrical specifications and core mechanical requirements. These parts are RoHS compliant and REACH unaffected. Physical form factor differences exist: 25PR1KLF features a smaller square face (0.270" x 0.270"), while 72PMR1KLF and 72PR1KLF maintain the 0.375" x 0.375" square form factor. 82PR1KLF uses a round form factor (0.250" diameter). Selection depends on PCB layout constraints and available mounting space.

M63P102KB40 from Vishay Spectrol matches all electrical specifications but features side adjustment instead of top adjustment. This part is RoHS3 compliant and suitable for applications where side-mounted adjustment is preferred or required by design constraints. MSL rating of 1 (Unlimited) indicates no moisture sensitivity restrictions.

Frequently Asked Questions (FAQ)

Q: Can 3386R-1-102LF be used as a direct replacement for 3386R-1-102?

A: Yes. The 3386R-1-102LF is a direct equivalent with identical electrical specifications (1 kOhm, 0.5W, ±10% tolerance, ±100ppm/°C), mechanical configuration (top adjustment, PC pins, through-hole), and physical dimensions (0.375" x 0.375" square). The primary difference is RoHS3 compliance status.

Q: What is the difference between top adjustment and side adjustment models?

A: Top adjustment (3386R-1-102, 3386R-1-102LF, 25PR1KLF, 72PMR1KLF, 72PR1KLF, 82PR1KLF) allows potentiometer adjustment from the top surface of the component. Side adjustment (M63P102KB40) requires access from the side. Selection depends on PCB layout and accessibility requirements during calibration or field adjustment.

Q: Are there physical form factor differences among the TT Electronics/BI substitutes?

A: Yes. 25PR1KLF has a smaller square face (0.270" x 0.270" / 6.86mm x 6.86mm). 72PMR1KLF and 72PR1KLF maintain the 0.375" x 0.375" square form factor matching the original. 82PR1KLF uses a round form factor (0.250" diameter / 6.35mm). All are through-hole mounted with PC pins and match electrical specifications.

Q: Which substitute parts are RoHS compliant?

A: 3386R-1-102LF is RoHS3 compliant. 25PR1KLF is RoHS compliant. 72PMR1KLF, 72PR1KLF, 82PR1KLF, and M63P102KB40 are all RoHS3 compliant. The original 3386R-1-102 is RoHS non-compliant.

Q: What is the REACH status of these parts?

A: 3386R-1-102LF is REACH unaffected. All TT Electronics/BI parts (25PR1KLF, 72PMR1KLF, 72PR1KLF, 82PR1KLF) are REACH unaffected. M63P102KB40 is REACH unaffected. The original 3386R-1-102 is REACH affected.

Q: Can packaging format differences affect substitution?

A: Packaging format (Tube vs. Bulk) does not affect electrical or mechanical compatibility. It impacts procurement, handling, and storage logistics only. 3386R-1-102 and 3386R-1-102LF are supplied in Tube packaging. 25PR1KLF is supplied in Tube packaging. 72PMR1KLF, 72PR1KLF, 82PR1KLF, and M63P102KB40 are supplied in Bulk packaging.

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