Equivalent & Substitute Parts for 3386P-1-502

Part Overview

The Bourns 3386P-1-502 is a 5 kOhm, 0.5W through-hole trimmer potentiometer with PC pin termination and top adjustment. This sealed Trimpot® 3386 series component is designed for applications requiring precision resistance adjustment in compact form factors. The part is currently active in production with 3,438 units in stock.

Substitute parts are necessary when the original specification becomes unavailable, when RoHS compliance requirements change, or when alternative packaging or adjustment mechanisms better suit specific application needs.

Substiute Parts

3386P-1-502

Bourns Inc.In Stock: 34693386P-1-502 Datasheet

Current PartRFQ

3386P-1-502LF

Bourns Inc.In Stock: 202353386P-1-502LF Datasheet

DirectRFQ

25PR5KLF

TT Electronics/BIIn Stock: 941625PR5KLF Datasheet

SimilarRFQ

72PMR5KLF

TT Electronics/BIIn Stock: 487072PMR5KLF Datasheet

SimilarRFQ

72PR5KLF

TT Electronics/BIIn Stock: 190172PR5KLF Datasheet

SimilarRFQ

82PR5KLF

TT Electronics/BIIn Stock: 268882PR5KLF Datasheet

SimilarRFQ

M63P502KB40

Vishay SpectrolIn Stock: 1053M63P502KB40 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3386P-1-502 is determined by the following critical parameters:

• Electrical Match: Resistance value (5 kOhms), power rating (0.5W), tolerance (±10%), and temperature coefficient (±100ppm/°C) must be identical
• Functional Match: Number of turns (1), adjustment type (top adjustment), and resistive material (cermet) must be identical
• Mechanical Match: Mounting type (through hole) and termination style (PC pins) must be identical
• Form Factor Consideration: Physical dimensions may vary within acceptable limits for PCB layout compatibility

The 3386P-1-502LF represents a direct equivalent with improved RoHS compliance. The TT Electronics/BI alternatives (25PR5KLF, 72PR5KLF, 72PMR5KLF, 82PR5KLF) meet all electrical and functional specifications but differ in physical dimensions or adjustment mechanism. The Vishay Spectrol M63P502KB40 differs in adjustment type (side adjustment instead of top adjustment) and represents a functional alternative only when adjustment location is not a design constraint.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute (Identical Form Factor & Compliance): The 3386P-1-502LF is the direct equivalent, offering identical electrical specifications, mechanical dimensions, and top adjustment mechanism. This part provides improved RoHS3 compliance and significantly higher inventory availability (20,200 units).

Secondary Substitutes (Electrical Equivalence, Dimensional Variation): The 72PR5KLF and 72PMR5KLF maintain identical form factor (0.375" x 0.375" square) and top adjustment, with RoHS3 compliance. The 25PR5KLF provides electrical equivalence with a smaller footprint (0.270" x 0.270"), suitable for space-constrained layouts. The 82PR5KLF offers electrical equivalence in a round form factor (0.250" diameter).

Functional Alternative (Adjustment Mechanism Difference): The M63P502KB40 provides electrical equivalence but features side adjustment instead of top adjustment. This part is suitable only when the adjustment location does not impact circuit board layout or user interface requirements.

Compliance Consideration: All substitute parts except 25PR5KLF carry ROHS3 compliance certification. The 25PR5KLF carries RoHS Compliant status. Selection should align with end-product regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the 3386P-1-502 be directly replaced with the 3386P-1-502LF?

A: Yes. The 3386P-1-502LF is electrically and mechanically identical to the 3386P-1-502, with the addition of RoHS3 compliance. Both parts share the same 0.375" x 0.375" square form factor, top adjustment mechanism, and PC pin termination. The primary difference is compliance status and inventory availability.

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

A: Top adjustment models (3386P-1-502, 3386P-1-502LF, 25PR5KLF, 72PR5KLF, 72PMR5KLF, 82PR5KLF) feature the adjustment screw on the top surface of the component. Side adjustment models (M63P502KB40) feature the adjustment screw on the side. This affects PCB layout and accessibility during calibration. Selection depends on circuit board design constraints.

Q: Are the TT Electronics/BI 72 series parts compatible with the Bourns 3386 series?

A: The 72PR5KLF and 72PMR5KLF are electrically and functionally equivalent to the 3386P-1-502, with identical resistance, power rating, tolerance, temperature coefficient, and adjustment mechanism. Both maintain the 0.375" x 0.375" square form factor. Mechanical compatibility depends on PCB footprint design; verify pin spacing and hole diameter specifications.

Q: Why does the 25PR5KLF have a smaller physical size?

A: The 25PR5KLF is from the TT Electronics/BI 25 series, which uses a more compact design (0.270" x 0.270" versus 0.375" x 0.375"). All electrical specifications remain identical. This part is suitable for applications where PCB space is limited, provided the smaller footprint is compatible with the circuit board layout.

Q: What is the significance of the "LF" suffix in part numbers?

A: The "LF" suffix indicates lead-free termination, consistent with RoHS compliance requirements. Parts with this designation use lead-free solder and materials throughout their construction.

Q: Can the round 82PR5KLF be used in place of the square 3386P-1-502?

A: The 82PR5KLF is electrically equivalent but differs in physical form factor (0.250" diameter round versus 0.375" x 0.375" square). Substitution is possible only if the PCB footprint and mounting holes accommodate the round geometry. Verify mechanical compatibility before implementation.

Q: What inventory considerations should guide part selection?

A: The 3386P-1-502LF offers the highest inventory availability (20,200 units), followed by the 25PR5KLF (9,327 units) and 72PMR5KLF (4,800 units). The original 3386P-1-502 has 3,438 units available. Selection should consider supply chain continuity and lead time requirements for production planning.