3386M-1-504LF Trimmer Potentiometer - Equivalent & Substitute Parts

Part Overview

The 3386M-1-504LF is a 500 kOhm, 0.5W through-hole trimmer potentiometer manufactured by Bourns Inc. as part of the Trimpot® 3386 sealed series. This component is actively produced and widely used in precision adjustment applications requiring cermet resistive elements and top-mounted adjustment mechanisms. Substitute parts may be required due to inventory constraints, supply chain considerations, or specific packaging requirements while maintaining identical electrical and mechanical performance.

Substiute Parts

3386M-1-504LF

Bourns Inc.In Stock: 11123386M-1-504LF Datasheet

Current PartRFQ

72PR500KLF

TT Electronics/BIIn Stock: 204372PR500KLF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The 72PR500KLF qualifies as a direct substitute for the 3386M-1-504LF based on strict parameter equivalence across all critical electrical and mechanical specifications. Substitution is valid when the following parameters match identically:

• Resistance value: 500 kOhms
• 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
• Physical dimensions: Square - 0.375" x 0.375" (9.53mm x 9.53mm)
• Regulatory compliance: ROHS3 Compliant, REACH Unaffected

The 72PR500KLF, manufactured by TT Electronics/BI, meets all these criteria and is therefore electrically and mechanically interchangeable with the primary part number.

Parameter Comparison

Engineering Selection Recommendations

Both the 3386M-1-504LF and 72PR500KLF are active production components with full regulatory compliance. Selection between these parts should be based on:

• Availability and lead time requirements
• Packaging format preference (Tube vs. Bulk)
• Inventory levels and supply chain logistics
• Manufacturer preference or qualification requirements

Both parts satisfy ROHS3 and REACH compliance requirements and are suitable for applications requiring sealed trimmer potentiometers with cermet resistive elements.

Frequently Asked Questions (FAQ)

Q: Can the 72PR500KLF replace the 3386M-1-504LF in existing designs?

A: Yes. The 72PR500KLF is electrically and mechanically equivalent across all specified parameters, including resistance, power rating, tolerance, temperature coefficient, adjustment mechanism, and physical dimensions. Direct substitution is valid without circuit redesign.

Q: What is the difference between Tube and Bulk packaging?

A: Tube packaging (3386M-1-504LF) provides organized component storage in reels or tubes, typically used for automated assembly. Bulk packaging (72PR500KLF) provides loose components in larger quantities, suitable for manual assembly or inventory management. Electrical and mechanical specifications remain identical.

Q: Are both parts suitable for high-temperature applications?

A: Both parts have a temperature coefficient of ±100ppm/°C. Suitability for specific temperature ranges depends on the application's operating environment and tolerance requirements. Consult detailed datasheets for thermal performance specifications.

Q: Do both parts meet current regulatory standards?

A: Yes. Both the 3386M-1-504LF and 72PR500KLF are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What determines substitution validity for trimmer potentiometers?

A: Substitution validity is determined by matching all critical parameters: resistance value, power rating, tolerance, temperature coefficient, number of turns, adjustment type, resistive material, mounting type, termination style, and physical dimensions. Any deviation in these parameters invalidates the substitution.