3329P-DK9-501 Equivalent & Substitute Parts

Part Overview

The 3329P-DK9-501 is a 500 Ohm, 0.5W through-hole trimmer potentiometer manufactured by Bourns Inc. under the Trimpot® 3329 series. This sealed cermet trimmer features top adjustment with PC pin termination and is designed for applications requiring precision resistance tuning in compact form factors. The part is currently active in production. Substitute parts may be required due to inventory availability, packaging preferences, or compliance requirements specific to end-use applications.

Substiute Parts

3329P-DK9-501

Bourns Inc.In Stock: 8223329P-DK9-501 Datasheet

Current PartRFQ

25PR500LF

TT Electronics/BIIn Stock: 346425PR500LF Datasheet

SimilarRFQ

82PR500LF

TT Electronics/BIIn Stock: 540482PR500LF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3329P-DK9-501 is determined by matching the following critical parameters:

• Resistance value: 500 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

All substitute parts listed below meet these electrical and mechanical specifications. Variations in physical dimensions, packaging format, and compliance certifications do not affect functional interchangeability within the specified parameter set.

Parameter Comparison

Engineering Selection Recommendations

Both 25PR500LF and 82PR500LF are functionally equivalent to the 3329P-DK9-501 based on electrical and mechanical specifications. Selection between these alternatives should be based on the following factors:

82PR500LF matches the physical form factor (round, 0.250" diameter) of the original part and is available in bulk packaging. This part carries ROHS3 compliance and REACH unaffected status, making it suitable for applications with environmental regulatory requirements.

25PR500LF features a square form factor (0.270" x 0.270" face) and is supplied in tube packaging. This part is RoHS Compliant and REACH unaffected, providing compliance flexibility for regulated applications. The dimensional difference must be evaluated against PCB layout constraints.

The 3329P-DK9-501 remains available with 780 units in stock. Selection of a substitute should account for compliance requirements, packaging needs, and mechanical fit within the target assembly.

Frequently Asked Questions (FAQ)

Q: Can 25PR500LF be used as a direct replacement for 3329P-DK9-501?

A: Yes, 25PR500LF meets all electrical specifications (500 Ohms, 0.5W, ±10% tolerance, ±100ppm/°C, 1 turn, cermet, top adjustment, through-hole PC pins). The physical form factor differs (square vs. round), requiring verification of PCB layout compatibility.

Q: What is the primary difference between 82PR500LF and 25PR500LF?

A: Both parts are electrically identical. The 82PR500LF maintains the round 0.250" diameter form factor matching the original 3329P-DK9-501, while 25PR500LF uses a square 0.270" x 0.270" form factor. Packaging differs (bulk vs. tube). Both are RoHS and REACH compliant.

Q: Are there compliance differences between the substitute parts?

A: Yes. The 3329P-DK9-501 is RoHS non-compliant and REACH affected. Both 25PR500LF and 82PR500LF are RoHS compliant (RoHS Compliant and ROHS3 Compliant respectively) and REACH unaffected. Applications with environmental compliance requirements should use 25PR500LF or 82PR500LF.

Q: Does the packaging format affect electrical performance?

A: No. Packaging (tube vs. bulk) is a logistics consideration only and does not affect the electrical or mechanical performance of the trimmer potentiometer.

Q: Which substitute part should be selected for space-constrained applications?

A: The 82PR500LF maintains the original round 0.250" diameter form factor and is recommended for applications where the PCB layout is optimized for the 3329P-DK9-501 dimensions.