Bourns 3386Y-1-502 Trimmer Potentiometer: Equivalent & Substitute Parts

Part Overview

The Bourns 3386Y-1-502 is a 5 kOhm, 0.5W through-hole trimmer potentiometer with PC pin termination and top adjustment. Part of the Trimpot® 3386 sealed series, this component is actively produced and widely used in precision circuit tuning applications. Substitute parts are identified based on matching electrical specifications, mechanical compatibility, and functional equivalence within the through-hole trimmer potentiometer category.

Substiute Parts

3386Y-1-502

Bourns Inc.In Stock: 11963386Y-1-502 Datasheet

Current PartRFQ

25PR5KLF

TT Electronics/BIIn Stock: 941625PR5KLF Datasheet

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72PMR5KLF

TT Electronics/BIIn Stock: 487072PMR5KLF Datasheet

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72PR5KLF

TT Electronics/BIIn Stock: 190172PR5KLF Datasheet

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82PR5KLF

TT Electronics/BIIn Stock: 268882PR5KLF Datasheet

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M63P502KB40

Vishay SpectrolIn Stock: 1053M63P502KB40 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 3386Y-1-502 are qualified based on 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: Single-turn cermet trimmer potentiometer with PC pin termination
• Mechanical Compatibility: Through-hole mounting with compatible footprint dimensions
• Adjustment Type Consideration: Top adjustment is the primary specification; side adjustment variants are noted as functional alternatives with different mechanical interfaces

Parts are grouped by manufacturer and series. Substitution is valid when all electrical parameters match and mechanical form factor permits board-level integration.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Identical Electrical and Mechanical Specifications)

The 72PMR5KLF and 72PR5KLF from TT Electronics/BI are direct functional equivalents to the 3386Y-1-502. Both maintain the same 9.53mm square footprint, top adjustment interface, and all electrical parameters. The 72PMR5KLF carries ROHS3 compliance, while 72PR5KLF also meets ROHS3 requirements. Both are available in bulk packaging with higher inventory levels than the original part.

Footprint-Compatible Substitute (Smaller Package)

The 25PR5KLF from TT Electronics/BI provides electrical equivalence with a reduced footprint (6.86mm square). This part is RoHS Compliant and REACH Unaffected. Selection of this part requires verification that the smaller physical dimensions are acceptable for the application's PCB layout.

Form Factor Variant (Round Package)

The 82PR5KLF from TT Electronics/BI maintains all electrical specifications but uses a round 6.35mm diameter package instead of square. This part is ROHS3 Compliant and suitable for applications where circular mounting is preferred or required.

Adjustment Type Variant (Side Adjustment)

The M63P502KB40 from Vishay Spectrol provides electrical equivalence but features side adjustment rather than top adjustment. The larger 10.03mm square footprint and side-access trimmer interface represent a functional alternative for designs where side adjustment is acceptable. This part is ROHS3 Compliant with MSL 1 rating.

Compliance Considerations

The original 3386Y-1-502 is RoHS non-compliant. All substitute parts listed are either RoHS Compliant or ROHS3 Compliant, providing regulatory advantage in new designs. All parts share identical ECCN (EAR99) and HTSUS (8533.40.8050) classifications.

Frequently Asked Questions (FAQ)

Q: Can the 25PR5KLF be used as a direct replacement for the 3386Y-1-502?

A: The 25PR5KLF is electrically equivalent with identical resistance, power rating, tolerance, and temperature coefficient. However, its smaller 6.86mm square footprint differs from the 3386Y-1-502's 9.53mm footprint. Substitution is valid only if the PCB layout accommodates the reduced dimensions and the mounting hole spacing is compatible.

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

A: Both parts are electrically and mechanically identical with matching 9.53mm square footprints and top adjustment. The primary difference is packaging: 72PR5KLF is supplied in bulk, while 72PMR5KLF is also bulk-packaged. Both are ROHS3 Compliant. Selection between them depends on procurement quantity requirements and inventory availability.

Q: Why would I choose the 82PR5KLF over the 72PR5KLF?

A: The 82PR5KLF maintains all electrical specifications but uses a round 6.35mm diameter package instead of the square 9.53mm format of the 72PR5KLF. Selection depends on PCB layout constraints and whether circular mounting holes are already present in the design.

Q: Is the M63P502KB40 a suitable substitute if my design uses top adjustment?

A: The M63P502KB40 is electrically equivalent but features side adjustment instead of top adjustment. Substitution requires that the application's mechanical interface and adjustment access can accommodate side-mounted trimmer access. The larger 10.03mm footprint must also be verified against PCB layout constraints.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts are either RoHS Compliant or ROHS3 Compliant. The original 3386Y-1-502 is RoHS non-compliant. Substitution with any listed part provides RoHS compliance advantage for new designs or regulatory requirements.

Q: Do all parts share the same REACH and ECCN status?

A: All substitute parts share identical ECCN (EAR99) and HTSUS (8533.40.8050) classifications with the original part. REACH status varies: the 3386Y-1-502 is REACH Affected, while all substitute parts are REACH Unaffected, providing regulatory simplification in supply chain management.