Equivalent & Substitute Parts for 3329P-1-104

Part Overview

The Bourns 3329P-1-104 is a 100 kOhm, 0.5W through-hole trimmer potentiometer with PC pin termination and top adjustment. This sealed Trimpot® 3329 series component is designed for applications requiring precision resistance adjustment in compact form factors. The part is currently active in production with 785 units in stock. Alternative equivalent parts may be required due to supply availability, compliance requirements, or specific application constraints.

Substiute Parts

3329P-1-104

Bourns Inc.In Stock: 8673329P-1-104 Datasheet

Current PartRFQ

3329P-1-104LF

Bourns Inc.In Stock: 32703329P-1-104LF Datasheet

DirectRFQ

25PR100KLF

TT Electronics / BI TechnologiesIn Stock: 282525PR100KLF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3329P-1-104 is determined by matching the following critical parameters: 100 kOhm resistance value, 0.5W power rating, ±10% tolerance, ±100ppm/°C temperature coefficient, single-turn adjustment, top adjustment access, cermet resistive material, through-hole mounting, and PC pin termination. Physical dimensions and form factor represent secondary considerations when primary electrical and mechanical parameters align.

Two substitute parts meet these criteria:

Direct Equivalent (3329P-1-104LF): Identical electrical specifications and termination style within the same Trimpot® 3329 series, with improved RoHS3 compliance status.

Cross-Manufacturer Equivalent (25PR100KLF): Matches all critical electrical parameters and termination requirements from TT Electronics / BI Technologies 25 series, with dimensional variation in physical form factor (square vs. round housing).

Parameter Comparison

Engineering Selection Recommendations

3329P-1-104LF is the primary direct equivalent, offering identical electrical performance and form factor with enhanced RoHS3 compliance. This part is recommended for applications subject to RoHS3 regulatory requirements or when maintaining the original round housing geometry is essential. Higher inventory availability (3200 units) supports consistent supply.

25PR100KLF serves as a cross-manufacturer alternative when Bourns supply is constrained. This part delivers equivalent electrical performance and termination compatibility but features a square housing form factor (0.270" x 0.270" vs. 0.250" diameter). The 25PR100KLF carries RoHS compliance and REACH unaffected status, providing regulatory advantages in certain jurisdictions. Physical footprint differences require PCB layout verification before implementation.

Selection between direct and cross-manufacturer equivalents depends on regulatory compliance requirements, available PCB space, and supply chain priorities.

Frequently Asked Questions (FAQ)

Q: Can 3329P-1-104LF be used as a direct replacement for 3329P-1-104?

A: Yes. Both parts share identical electrical specifications (100 kOhm, 0.5W, ±10% tolerance, ±100ppm/°C), adjustment type, resistive material, and physical dimensions. The primary difference is RoHS3 compliance status of the LF variant.

Q: What are the key differences between 3329P-1-104 and 25PR100KLF?

A: Electrical parameters are equivalent across both parts. The primary difference is physical form factor: 3329P-1-104 features a round 0.250" diameter housing, while 25PR100KLF uses a square 0.270" x 0.270" housing. Regulatory compliance also differs, with 25PR100KLF offering RoHS compliance and REACH unaffected status.

Q: Does the housing shape difference between round and square affect electrical performance?

A: No. Housing geometry does not affect the electrical characteristics specified in the parameter table. However, PCB layout and mounting hole spacing must accommodate the different physical dimensions.

Q: Are all three parts suitable for the same circuit applications?

A: Yes, provided PCB layout accommodates the physical dimensions. All three parts deliver identical electrical performance: 100 kOhm resistance, 0.5W power handling, single-turn top adjustment, and PC pin termination.

Q: Which part should be selected for new designs?

A: Selection depends on regulatory requirements and supply constraints. For RoHS3-compliant designs, use 3329P-1-104LF. For applications where cross-manufacturer sourcing is acceptable and square housing fits the layout, 25PR100KLF provides additional regulatory advantages.