Bourns 3386F-1-504 Trimmer Potentiometer - Equivalent & Substitute Parts

Part Overview

The Bourns 3386F-1-504 is a 500 kOhm, 0.5W through-hole trimmer potentiometer with top adjustment, designed for PC pin termination in sealed applications. This component is classified as Active product status. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and mounting characteristics align with the original design requirements, enabling direct circuit board replacement without functional compromise.

Substiute Parts

3386F-1-504

Bourns Inc.In Stock: 9373386F-1-504 Datasheet

Current PartRFQ

3386F-1-504LF

Bourns Inc.In Stock: 10583386F-1-504LF Datasheet

DirectRFQ

72PR500KLF

TT Electronics/BIIn Stock: 204372PR500KLF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 3386F-1-504 are classified based on strict electrical and mechanical parameter alignment:

Direct Manufacturer Substitute (Same Manufacturer): The 3386F-1-504LF maintains identical electrical specifications (500 kOhms, 0.5W, ±10% tolerance, ±100ppm/°C, 1 turn, top adjustment, cermet material) and mechanical dimensions (0.375" x 0.375" square, through-hole PC pins). The primary distinction is RoHS compliance status and termination finish designation (LF suffix indicates lead-free).

Similar Manufacturer Substitute (Cross-Manufacturer): The 72PR500KLF from TT Electronics/BI matches all critical electrical parameters (500 kOhms, 0.5W, ±10% tolerance, ±100ppm/°C, 1 turn, top adjustment, cermet material) and physical dimensions (0.375" x 0.375" square, through-hole PC Pins). Substitution is valid based on functional equivalence across these parameters. Packaging differs (Bulk vs. Tube).

Key Parameters Determining Substitution:

• Resistance value: 500 kOhms
• Power rating: 0.5W
• 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: 0.375" x 0.375" square

Parameter Comparison

Engineering Selection Recommendations

3386F-1-504LF (Bourns Inc.): This part is the preferred direct substitute when RoHS3 compliance and REACH unaffected status are required. It maintains the same manufacturer lineage, identical electrical and mechanical specifications, and tube packaging. The lead-free termination (LF designation) aligns with modern environmental regulations while preserving circuit compatibility.

72PR500KLF (TT Electronics/BI): This cross-manufacturer substitute is functionally equivalent across all critical electrical and mechanical parameters. It is ROHS3 compliant and REACH unaffected. Selection of this part is appropriate when bulk packaging is acceptable and cross-manufacturer sourcing is permitted. Verify PCB layout accommodation for any minor dimensional tolerances between manufacturers.

3386F-1-504 (Original): Retain this part number only when RoHS non-compliance and REACH affected status are explicitly required by design specifications or regulatory exemptions.

Frequently Asked Questions (FAQ)

Q: Can the 3386F-1-504LF be used as a direct replacement for the 3386F-1-504? A: Yes. Both parts share identical electrical specifications (500 kOhms, 0.5W, ±10% tolerance, ±100ppm/°C, 1 turn, top adjustment, cermet material) and mechanical dimensions (0.375" x 0.375" square, through-hole PC pins). The primary difference is RoHS and REACH compliance status. The LF variant is preferred for new designs requiring environmental compliance.

Q: Is the 72PR500KLF compatible with the 3386F-1-504 on the same PCB? A: Yes, from an electrical and mechanical standpoint. The 72PR500KLF matches all critical parameters: 500 kOhms resistance, 0.5W power rating, ±10% tolerance, ±100ppm/°C temperature coefficient, 1 turn, top adjustment, cermet material, and 0.375" x 0.375" square dimensions with through-hole PC pin termination. Packaging differs (bulk vs. tube), but this does not affect circuit board compatibility.

Q: What are the key parameters that determine substitution validity? A: Substitution is valid when the following parameters match: resistance value (500 kOhms), power rating (0.5W), 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), and physical dimensions (0.375" x 0.375" square).

Q: Does packaging type affect circuit board compatibility? A: No. Packaging type (tube vs. bulk) affects supply chain handling and inventory management but does not impact electrical or mechanical compatibility on the circuit board. Both packaging formats contain identical components.

Q: Are there compliance differences between these substitutes? A: Yes. The 3386F-1-504 is RoHS non-compliant and REACH affected. Both the 3386F-1-504LF and 72PR500KLF are ROHS3 compliant and REACH unaffected. Select based on your design's regulatory requirements.

Q: Can these parts be used interchangeably in production? A: Yes, provided that RoHS and REACH compliance requirements are satisfied. The 3386F-1-504LF and 72PR500KLF are functionally and mechanically equivalent and can be used interchangeably. Verify supplier availability and lead times when transitioning between parts.