Bourns 3329W-1-102 Trimmer Potentiometer: Equivalent & Substitute Parts

Part Overview

The Bourns 3329W-1-102 is a 1 kOhm, 0.5W through-hole trimmer potentiometer with PC pin termination and side adjustment. This sealed Trimpot® 3329 series component is designed for applications requiring precision resistive adjustment in compact rectangular form factors. The part is currently active in production. Substitute parts may be required due to inventory availability, RoHS compliance requirements, or specific packaging and dimensional constraints in manufacturing environments.

Substiute Parts

3329W-1-102

Bourns Inc.In Stock: 7483329W-1-102 Datasheet

Current PartRFQ

3329W-1-102LF

Bourns Inc.In Stock: 13263329W-1-102LF Datasheet

DirectRFQ

72XR1KLF

TT Electronics/BIIn Stock: 262572XR1KLF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3329W-1-102 is determined by strict equivalence across the following critical parameters: resistance value (1 kOhms), power rating (0.5W), tolerance (±10%), temperature coefficient (±100ppm/°C), number of turns (1), adjustment type (side adjustment), resistive material (cermet), mounting type (through hole), and termination style (PC pins).

Two substitute parts meet these electrical and mechanical criteria:

Direct Substitute (Bourns 3329W-1-102LF): Identical electrical specifications and series designation. Differs only in RoHS compliance status and packaging format.

Similar Substitute (TT Electronics/BI 72XR1KLF): Matches all electrical parameters and core mechanical specifications. Differs in physical dimensions (square 0.375" × 0.375" versus rectangular 0.260" × 0.330"), manufacturer, series designation, packaging format, and regulatory compliance status.

Parameter Comparison

Engineering Selection Recommendations

3329W-1-102LF is the preferred direct substitute when RoHS3 compliance is required. This part maintains identical electrical performance, series designation, and physical dimensions while providing full RoHS3 certification. It is suitable for applications with strict regulatory requirements or procurement policies mandating RoHS compliance.

72XR1KLF is a functional electrical equivalent suitable for applications where physical form factor constraints are not critical. This part provides RoHS3 compliance and REACH unaffected status, offering superior regulatory positioning. However, the larger square footprint (0.375" × 0.375") requires PCB layout verification to confirm compatibility with existing mounting patterns designed for the rectangular 0.260" × 0.330" form factor.

Selection between 3329W-1-102LF and 72XR1KLF depends on dimensional constraints and regulatory compliance requirements specific to the application and manufacturing environment.

Frequently Asked Questions (FAQ)

Q: Can 3329W-1-102LF be used as a direct replacement for 3329W-1-102?

A: Yes. Both parts are electrically and mechanically identical, with matching resistance, power rating, tolerance, temperature coefficient, adjustment type, resistive material, mounting type, termination style, and physical dimensions. The primary difference is RoHS3 compliance status.

Q: What are the dimensional differences between 3329W-1-102 and 72XR1KLF?

A: The 3329W-1-102 has a rectangular face of 0.260" × 0.330" (6.60mm × 8.38mm). The 72XR1KLF has a square face of 0.375" × 0.375" (9.53mm × 9.53mm). PCB layout must accommodate the larger footprint of the 72XR1KLF.

Q: Are all three parts electrically equivalent?

A: Yes. All three parts share identical electrical specifications: 1 kOhm resistance, 0.5W power rating, ±10% tolerance, ±100ppm/°C temperature coefficient, 1 turn, side adjustment, cermet resistive material, through-hole mounting, and PC pin termination.

Q: Which substitute part has the best regulatory compliance?

A: The 72XR1KLF offers the most comprehensive regulatory positioning with ROHS3 compliance and REACH unaffected status. The 3329W-1-102LF provides ROHS3 compliance but remains REACH affected.

Q: What packaging formats are available?

A: The 3329W-1-102 and 3329W-1-102LF are supplied in tube packaging. The 72XR1KLF is supplied in bulk packaging.