Bourns 3329P-DK9-103 Trimmer Potentiometer - Equivalent & Substitute Parts

Part Overview

The Bourns 3329P-DK9-103 is a 10 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 maintains Active product status and is currently in stock with 822 units available.

Substitute parts become necessary when addressing supply chain constraints, packaging requirements, compliance specifications, or design optimization needs while maintaining equivalent electrical and mechanical performance.

Substiute Parts

3329P-DK9-103

Bourns Inc.In Stock: 9203329P-DK9-103 Datasheet

Current PartRFQ

25PR10KLF

TT Electronics/BIIn Stock: 499725PR10KLF Datasheet

SimilarRFQ

82PR10KLF

TT Electronics/BIIn Stock: 149382PR10KLF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3329P-DK9-103 is determined by strict equivalence across the following parameters:

• Resistance value: 10 kOhms (exact match required)
• Power rating: 0.5W / 1/2W (exact match required)
• Tolerance: ±10% (exact match required)
• Temperature coefficient: ±100ppm/°C (exact match required)
• Number of turns: 1 (exact match required)
• Adjustment type: Top Adjustment (exact match required)
• Resistive material: Cermet (exact match required)
• Mounting type: Through Hole (exact match required)
• Termination style: PC Pins (exact match required)

The following parts meet all substitution criteria:

• TT Electronics/BI 25PR10KLF (Series 25, Square form factor)
• TT Electronics/BI 82PR10KLF (Series 82, Round form factor)

Parameter Comparison

Engineering Selection Recommendations

All three parts are Active status components with identical electrical specifications. Selection between the 3329P-DK9-103 and its substitutes should be based on the following factors:

Bourns 3329P-DK9-103: Select when RoHS non-compliant designs are acceptable and REACH-affected materials are permissible. Round form factor (0.250" diameter) matches standard PCB layout footprints for this series.

TT Electronics/BI 25PR10KLF: Select when RoHS compliance is required and REACH unaffected status is necessary. Square form factor (0.270" x 0.270") requires PCB layout verification for footprint compatibility. Tube packaging supports automated assembly processes. Highest inventory availability (4897 units).

TT Electronics/BI 82PR10KLF: Select when RoHS3 compliance and REACH unaffected status are required. Round form factor (0.250" diameter) maintains dimensional compatibility with standard 3329 series footprints. Bulk packaging supports high-volume procurement. Mid-range inventory availability (1404 units).

Frequently Asked Questions (FAQ)

Q: Can the 25PR10KLF substitute for the 3329P-DK9-103 in existing PCB designs?

A: Electrical substitution is valid. However, the 25PR10KLF has a square form factor (0.270" x 0.270") compared to the 3329P-DK9-103 round form factor (0.250" diameter). PCB footprint compatibility must be verified before implementation.

Q: What is the primary difference between the 25PR10KLF and 82PR10KLF?

A: Both parts are electrically identical. The 25PR10KLF uses tube packaging and has a square form factor. The 82PR10KLF uses bulk packaging and has a round form factor matching the original 3329P-DK9-103 dimensions.

Q: Are there compliance differences between these parts?

A: Yes. The 3329P-DK9-103 is RoHS non-compliant and REACH Affected. Both TT Electronics/BI parts (25PR10KLF and 82PR10KLF) are RoHS Compliant and REACH Unaffected. Select based on your design's compliance requirements.

Q: Which substitute offers the best inventory availability?

A: The 25PR10KLF offers the highest inventory with 4897 units in stock, compared to 1404 units for the 82PR10KLF and 822 units for the original 3329P-DK9-103.

Q: Can I use the 82PR10KLF as a direct replacement without PCB modifications?

A: Yes. The 82PR10KLF maintains the same round form factor (0.250" diameter) and PC pin termination as the 3329P-DK9-103, allowing direct substitution without PCB layout changes.