Equivalent & Substitute Parts for 3329H-1-502

Part Overview

The 3329H-1-502 is a 5 kOhm, 0.5W through-hole trimmer potentiometer manufactured by Bourns Inc. as part of the Trimpot® 3329 Sealed series. This cermet-based trimmer features top adjustment with PC pin termination and a round 0.250" diameter form factor. The component is currently active in production and widely used in circuit tuning and calibration applications where precision resistance adjustment is required.

Equivalent and substitute parts become necessary when the primary part number experiences supply constraints, when alternative compliance certifications are required, or when design flexibility permits form factor variations while maintaining electrical performance.

Substiute Parts

3329H-1-502

Bourns Inc.In Stock: 10983329H-1-502 Datasheet

Current PartRFQ

3329H-1-502LF

Bourns Inc.In Stock: 43423329H-1-502LF Datasheet

DirectRFQ

25PR5KLF

TT Electronics/BIIn Stock: 941625PR5KLF Datasheet

SimilarRFQ

72PMR5KLF

TT Electronics/BIIn Stock: 487072PMR5KLF Datasheet

SimilarRFQ

82PR5KLF

TT Electronics/BIIn Stock: 268882PR5KLF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3329H-1-502 is determined by strict equivalence across the following critical parameters: resistance value (5 kOhms), power rating (0.5W), tolerance (±10%), temperature coefficient (±100ppm/°C), number of turns (1), adjustment type (top adjustment), resistive material (cermet), mounting type (through hole), and termination style (PC pins).

All substitute parts listed maintain these electrical and functional specifications. Form factor variations (round versus square body dimensions) and packaging differences (tube versus bulk) do not affect electrical substitutability. Compliance certifications (RoHS status) and regulatory classifications (REACH, ECCN, HTSUS) may differ between manufacturers but do not alter functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

3329H-1-502LF is the direct equivalent from Bourns Inc., maintaining identical form factor and electrical specifications while providing ROHS3 compliance. This part is the preferred substitute when RoHS certification is required and supply of the original 3329H-1-502 is constrained.

82PR5KLF from TT Electronics/BI provides electrical and dimensional equivalence with ROHS3 compliance and round 0.250" form factor matching the original part. This substitute is suitable for applications where alternative manufacturer sourcing is acceptable and bulk packaging is compatible with procurement workflows.

25PR5KLF from TT Electronics/BI maintains all electrical specifications with RoHS compliance but features a square 0.270" x 0.270" form factor. This substitute is applicable only when PCB layout accommodates the alternative body geometry.

72PMR5KLF from TT Electronics/BI maintains all electrical specifications with ROHS3 compliance but features a larger square 0.375" x 0.375" form factor. This substitute is applicable only when PCB layout accommodates the larger body geometry and bulk packaging is acceptable.

Frequently Asked Questions (FAQ)

Q: Can 3329H-1-502LF be used as a direct replacement for 3329H-1-502?

A: Yes. The 3329H-1-502LF is electrically and mechanically identical to the 3329H-1-502, with the primary difference being ROHS3 compliance certification. Both parts share the same round 0.250" diameter form factor, 5 kOhm resistance, 0.5W power rating, and PC pin termination.

Q: What is the difference between round and square form factors in the substitute list?

A: The 3329H-1-502 and 82PR5KLF feature round 0.250" diameter bodies. The 25PR5KLF features a square 0.270" x 0.270" body, and the 72PMR5KLF features a larger square 0.375" x 0.375" body. All maintain identical electrical performance. Form factor selection depends on available PCB space and layout constraints.

Q: Are there compliance differences between substitute parts?

A: Yes. The original 3329H-1-502 is RoHS non-compliant. The 3329H-1-502LF and 72PMR5KLF are ROHS3 compliant. The 25PR5KLF is RoHS compliant. The 82PR5KLF is ROHS3 compliant. All substitute parts are REACH affected or unaffected as specified. Selection depends on regulatory requirements for the end application.

Q: Does packaging (tube versus bulk) affect electrical performance?

A: No. Packaging format (tube or bulk) does not affect electrical specifications or performance. The choice between tube and bulk packaging is determined by procurement quantity requirements and inventory management practices.

Q: Can I substitute a part with a different form factor without circuit redesign?

A: Form factor substitution requires verification that the alternative body dimensions fit within available PCB space. The 25PR5KLF (0.270" square) and 72PMR5KLF (0.375" square) have different footprints than the original round 0.250" diameter design and may require PCB layout modification.

Q: Are all substitute parts currently in stock?

A: Inventory status is subject to change. Refer to current distributor inventory data for real-time availability of 3329H-1-502, 3329H-1-502LF, 25PR5KLF, 72PMR5KLF, and 82PR5KLF.