Equivalent & Substitute Parts for 3329H-DK9-502

Part Overview

The Bourns 3329H-DK9-502 is a 5 kOhm, 0.5W through-hole trimmer potentiometer with PC pin termination, top adjustment, and cermet resistive material. This component is classified as Active product status. Substitute parts become necessary when the primary part experiences extended lead times, inventory constraints, or when design requirements permit mechanical or packaging variations while maintaining electrical equivalence.

Substiute Parts

3329H-DK9-502

Bourns Inc.In Stock: 11453329H-DK9-502 Datasheet

Current PartRFQ

25PR5KLF

TT Electronics/BIIn Stock: 941625PR5KLF Datasheet

SimilarRFQ

72PMR5KLF

TT Electronics/BIIn Stock: 487072PMR5KLF Datasheet

SimilarRFQ

82PR5KLF

TT Electronics/BIIn Stock: 268882PR5KLF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3329H-DK9-502 is determined by strict electrical and mechanical parameter matching:

Electrical Equivalence Requirements:

• Resistance value: 5 kOhms (exact match)
• Power rating: 0.5W minimum
• Tolerance: ±10% or better
• Temperature coefficient: ±100ppm/°C or better
• Number of turns: 1 turn
• Adjustment type: Top adjustment
• Resistive material: Cermet

Mechanical Compatibility Requirements:

• Mounting type: Through hole
• Termination style: PC pins
• Physical dimensions: Acceptable variation within PCB layout constraints

All three substitute parts (25PR5KLF, 72PMR5KLF, 82PR5KLF) meet these electrical requirements. Mechanical differences exist in package footprint and form factor, which may require PCB layout evaluation.

Parameter Comparison

Engineering Selection Recommendations

82PR5KLF (TT Electronics/BI): This substitute provides identical electrical performance and matching round form factor (0.250" diameter) to the 3329H-DK9-502. ROHS3 compliance status offers regulatory advantage. Inventory availability is 2,596 units.

25PR5KLF (TT Electronics/BI): This substitute meets all electrical requirements with RoHS compliance. The square form factor (0.270" x 0.270") differs mechanically from the original part and requires PCB layout verification. Highest inventory availability at 9,327 units.

72PMR5KLF (TT Electronics/BI): This substitute meets all electrical requirements with ROHS3 compliance. The larger square form factor (0.375" x 0.375") represents the most significant mechanical deviation and requires PCB layout verification. Inventory availability is 4,800 units.

Selection should prioritize form factor compatibility with existing PCB designs. The 82PR5KLF offers the most direct mechanical substitution. The 25PR5KLF and 72PMR5KLF are viable only if PCB layout accommodates their respective square footprints.

Frequently Asked Questions (FAQ)

Q: Can the 25PR5KLF substitute for the 3329H-DK9-502 in an existing design? A: Electrical substitution is valid. However, the 25PR5KLF has a square form factor (0.270" x 0.270") versus the original round form factor (0.250" diameter). PCB layout must be evaluated to confirm the mounting hole pattern and clearance accommodate the square footprint.

Q: What is the primary difference between the 72PMR5KLF and 82PR5KLF? A: Both parts are electrically equivalent. The 72PMR5KLF has a larger square form factor (0.375" x 0.375"), while the 82PR5KLF maintains the round form factor (0.250" diameter) matching the original part. The 82PR5KLF is preferred for direct mechanical substitution.

Q: Are all substitute parts RoHS compliant? A: The 3329H-DK9-502 is RoHS non-compliant. All three substitute parts (25PR5KLF, 72PMR5KLF, 82PR5KLF) are RoHS compliant or ROHS3 compliant, offering regulatory advantage if RoHS compliance is required.

Q: Do packaging differences affect component performance? A: Packaging (Tube versus Bulk) affects handling and storage logistics but does not alter electrical or mechanical performance. Selection should align with procurement and assembly process requirements.

Q: Which substitute offers the best direct replacement? A: The 82PR5KLF provides the most direct replacement, matching the round form factor and electrical specifications of the 3329H-DK9-502 while offering improved RoHS compliance status.