3329P-DK9-201 Equivalent & Substitute Parts

Part Overview

The 3329P-DK9-201 is a through-hole trimmer potentiometer manufactured by Bourns Inc., part of the Trimpot® 3329 sealed series. This 200 Ohm, 0.5W cermet trimmer features top adjustment with PC pin termination and is designed for applications requiring precision variable resistance in compact form factors. The part maintains active product status with 739 units currently in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity.

Substiute Parts

3329P-DK9-201

Bourns Inc.In Stock: 8333329P-DK9-201 Datasheet

Current PartRFQ

25PR200LF

TT Electronics/BIIn Stock: 512025PR200LF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3329P-DK9-201 is determined by strict equivalence across the following critical parameters:

• Resistance value: 200 Ohms
• Power rating: 0.5W (1/2W)
• Tolerance: ±10%
• Temperature coefficient: ±100ppm/°C
• Number of turns: 1
• Adjustment type: Top Adjustment
• Resistive material: Cermet
• Mounting type: Through Hole
• Termination style: PC Pins

The substitute part 25PR200LF meets all electrical and functional specifications. Physical dimensions differ (square 0.270" × 0.270" face versus round 0.250" diameter), which may require PCB layout verification but does not affect electrical performance or functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the 3329P-DK9-201 and 25PR200LF are active products with identical electrical specifications and functional performance. Selection between these parts should be based on:

Compliance Status: The 25PR200LF is RoHS Compliant and REACH Unaffected, while the 3329P-DK9-201 is RoHS non-compliant and REACH Affected. Applications subject to RoHS or REACH regulations should prioritize the 25PR200LF.

Inventory Availability: The 25PR200LF offers significantly higher stock availability (5068 units) compared to the 3329P-DK9-201 (739 units), supporting extended procurement windows and supply chain resilience.

Physical Form Factor: The 3329P-DK9-201 features a round body (0.250" diameter), while the 25PR200LF has a square body (0.270" × 0.270" face). PCB layout and mounting hole patterns must accommodate the selected form factor.

Frequently Asked Questions (FAQ)

Q: Can the 25PR200LF directly replace the 3329P-DK9-201 in existing designs?

A: Electrical substitution is complete. Physical dimensions differ, requiring verification that PCB mounting holes and layout accommodate the square form factor of the 25PR200LF. Functional performance and electrical characteristics are identical.

Q: What are the key differences between these parts?

A: Electrical specifications are identical. Differences include manufacturer (Bourns vs. TT Electronics/BI), series designation, physical form factor (round vs. square), and regulatory compliance status (RoHS and REACH).

Q: Which part should be selected for new designs?

A: For applications requiring RoHS or REACH compliance, the 25PR200LF is the appropriate selection. For applications without regulatory constraints, either part is functionally equivalent; selection may be based on inventory availability, cost, or existing design documentation.

Q: Are there any performance differences between these trimmers?

A: No. Both parts share identical electrical parameters: 200 Ohm resistance, 0.5W power rating, ±10% tolerance, ±100ppm/°C temperature coefficient, 1-turn adjustment, cermet resistive material, and top adjustment mechanism.

Q: What should be verified before substitution?

A: Confirm PCB mounting hole spacing and layout accommodate the square body dimensions of the 25PR200LF (0.270" × 0.270" face). Verify regulatory compliance requirements for the application. Confirm PC pin termination compatibility with existing solder pad patterns.