Equivalent & Substitute Parts for 3386M-1-502LF

Part Overview

The Bourns 3386M-1-502LF is a 5 kOhm, 0.5W through-hole trimmer potentiometer with top adjustment, PC pin termination, and cermet resistive material. This component is part of the Trimpot® 3386 sealed series and maintains Active product status. Substitute parts are identified based on matching electrical specifications, mechanical compatibility, and functional equivalence within the through-hole trimmer potentiometer category.

Key Parameters

Parameter	Value
Resistance	5 kOhms
Power Rating	0.5W (1/2W)
Tolerance	±10%
Temperature Coefficient	±100ppm/°C
Number of Turns	1
Adjustment Type	Top Adjustment
Resistive Material	Cermet
Mounting Type	Through Hole
Termination Style	PC Pins
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the 3386M-1-502LF are qualified based on the following criteria:

Electrical Equivalence: All substitute parts maintain identical resistance (5 kOhms), power rating (0.5W), tolerance (±10%), temperature coefficient (±100ppm/°C), and single-turn adjustment specification.

Mechanical Compatibility: Substitute parts share the same mounting type (through hole), termination style (PC pins), and resistive material (cermet).

Functional Parameters: All parts are single-turn trimmers with cermet construction, ensuring equivalent performance characteristics within the specified electrical operating range.

Adjustment Type Consideration: The primary part features top adjustment. One substitute (M63P502KB40) features side adjustment, which represents a functional difference in physical access but maintains electrical equivalence.

Physical Form Factor: Substitute parts vary in size and shape (square 0.375" × 0.375", square 0.270" × 0.270", and round 0.250" diameter), requiring PCB layout verification during selection.

Parameter Comparison

Part Number	Manufacturer	Resistance	Power (W)	Tolerance	Temp Coeff	Turns	Adjustment	Material	Termination	Size / Dimension	RoHS Status	Inventory
3386M-1-502LF	Bourns Inc.	5 kOhms	0.5	±10%	±100ppm/°C	1	Top	Cermet	PC Pins	Square 0.375" × 0.375" (9.53mm × 9.53mm)	ROHS3	1103 Pcs
25PR5KLF	TT Electronics/BI	5 kOhms	0.5	±10%	±100ppm/°C	1	Top	Cermet	PC Pins	Square 0.270" × 0.270" (6.86mm × 6.86mm)	RoHS	9327 Pcs
72PMR5KLF	TT Electronics/BI	5 kOhms	0.5	±10%	±100ppm/°C	1	Top	Cermet	PC Pins	Square 0.375" × 0.375" (9.53mm × 9.53mm)	ROHS3	4800 Pcs
72PR5KLF	TT Electronics/BI	5 kOhms	0.5	±10%	±100ppm/°C	1	Top	Cermet	PC Pins	Square 0.375" × 0.375" (9.53mm × 9.53mm)	ROHS3	1817 Pcs
82PR5KLF	TT Electronics/BI	5 kOhms	0.5	±10%	±100ppm/°C	1	Top	Cermet	PC Pins	Round 0.250" Dia (6.35mm)	ROHS3	2596 Pcs
M63P502KB40	Vishay Spectrol	5 kOhms	0.5	±10%	±100ppm/°C	1	Side	Cermet	PC Pins	Square 0.395" × 0.395" (10.03mm × 10.03mm)	ROHS3	943 Pcs

Engineering Selection Recommendations

All substitute parts maintain Active product status and comply with ROHS3 or RoHS certification requirements. Selection between equivalent parts depends on the following factors:

Form Factor Compatibility: The 3386M-1-502LF, 72PMR5KLF, and 72PR5KLF share identical square 0.375" × 0.375" dimensions and are direct mechanical replacements. The 25PR5KLF offers a smaller square footprint (0.270" × 0.270"), and the 82PR5KLF provides a round form factor (0.250" diameter). The M63P502KB40 features a larger square footprint (0.395" × 0.395").

Adjustment Access: The 3386M-1-502LF and all TT Electronics/BI substitutes feature top adjustment. The M63P502KB40 features side adjustment, requiring different PCB layout and access considerations.

Packaging and Inventory: Substitute parts are available in tube (25PR5KLF) or bulk (72PMR5KLF, 72PR5KLF, 82PR5KLF, M63P502KB40) packaging with varying inventory levels.

Compliance Certification: All parts maintain REACH Unaffected status and EAR99 ECCN classification. Moisture sensitivity is not applicable for all parts except M63P502KB40, which carries MSL 1 (Unlimited).

Frequently Asked Questions (FAQ)

Q: Can 25PR5KLF replace 3386M-1-502LF in all applications?

A: The 25PR5KLF is electrically equivalent but features a smaller square footprint (0.270" × 0.270" versus 0.375" × 0.375"). PCB layout must accommodate the reduced dimensions. Top adjustment access is maintained.

Q: What is the difference between 72PR5KLF and 72PMR5KLF?

A: Both parts share identical electrical specifications, dimensions (0.375" × 0.375"), and top adjustment. The primary difference is packaging: 72PR5KLF is supplied in bulk, while 72PMR5KLF is also supplied in bulk. Both maintain ROHS3 compliance.

Q: Is M63P502KB40 a direct replacement?

A: M63P502KB40 is electrically equivalent but features side adjustment instead of top adjustment and a larger square footprint (0.395" × 0.395"). PCB layout and adjustment access requirements differ from the 3386M-1-502LF.

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts comply with ROHS3 or RoHS certification. The 25PR5KLF carries RoHS compliance; all others carry ROHS3 compliance.

Q: What form factors are available among substitute parts?

A: Substitute parts are available in three form factors: square 0.375" × 0.375" (3386M-1-502LF, 72PMR5KLF, 72PR5KLF), square 0.270" × 0.270" (25PR5KLF), round 0.250" diameter (82PR5KLF), and square 0.395" × 0.395" (M63P502KB40).

Q: Do all parts use cermet resistive material?

A: Yes, all parts in this equivalence group use cermet resistive material, ensuring consistent performance characteristics across electrical operating ranges.

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