Bourns 3386H-1-503 Trimmer Potentiometer Equivalent & Substitute Parts

Part Overview

The Bourns 3386H-1-503 is a 50 kOhm, 0.5W through-hole trimmer potentiometer with PC pin termination and side adjustment capability. This sealed Trimpot® 3386 series component is designed for precision resistance adjustment in electronic circuits requiring compact form factor and reliable performance. The part is currently active in production. Identifying equivalent and substitute parts is necessary when addressing supply chain constraints, compliance requirements, or inventory optimization while maintaining identical electrical and mechanical specifications.

Substiute Parts

3386H-1-503

Bourns Inc.In Stock: 10183386H-1-503 Datasheet

Current PartRFQ

3386H-1-503LF

Bourns Inc.In Stock: 24913386H-1-503LF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 3386H-1-503 are identified based on strict equivalence across all critical electrical and mechanical parameters. The substitution criteria include:

• Identical resistance value: 50 kOhms
• Identical power rating: 0.5W (1/2W)
• Identical tolerance: ±10%
• Identical temperature coefficient: ±100ppm/°C
• Identical number of turns: 1
• Identical adjustment type: Side Adjustment
• Identical resistive material: Cermet
• Identical mounting type: Through Hole
• Identical termination style: PC Pins
• Identical physical dimensions: Square - 0.375" x 0.375" (9.53mm x 9.53mm)
• Same series: Trimpot® 3386 - Sealed

The 3386H-1-503LF meets all these criteria and qualifies as a direct substitute part.

Parameter Comparison

Engineering Selection Recommendations

Both the 3386H-1-503 and 3386H-1-503LF are functionally equivalent and electrically interchangeable. Selection between these parts should be based on regulatory and compliance requirements:

The 3386H-1-503LF is the preferred choice for applications requiring RoHS3 compliance and REACH unaffected status. This variant eliminates regulatory constraints associated with restricted substances and provides compliance assurance for modern manufacturing and distribution environments.

The 3386H-1-503 remains suitable for applications where RoHS compliance is not mandated or where legacy system requirements specify the original part number.

Both parts maintain identical electrical performance, mechanical fit, and functional characteristics within the specified tolerance and temperature coefficient ranges.

Frequently Asked Questions (FAQ)

Q: Are the 3386H-1-503 and 3386H-1-503LF electrically interchangeable?

A: Yes. Both parts have identical resistance (50 kOhms), power rating (0.5W), tolerance (±10%), temperature coefficient (±100ppm/°C), and all other electrical specifications. They are direct electrical equivalents.

Q: Can the 3386H-1-503LF be used as a drop-in replacement for the 3386H-1-503?

A: Yes. The parts share identical physical dimensions (0.375" x 0.375"), mounting type (Through Hole), termination style (PC Pins), and adjustment mechanism (Side Adjustment). No PCB layout or mechanical modifications are required.

Q: What is the difference between these two part numbers?

A: The primary difference is compliance status. The 3386H-1-503LF is RoHS3 compliant and REACH unaffected, while the 3386H-1-503 is RoHS non-compliant and REACH affected. Electrical and mechanical specifications are identical.

Q: Which part should I specify for new designs?

A: For new designs, specify the 3386H-1-503LF to ensure compliance with current RoHS3 and REACH regulations. This part is actively produced and provides regulatory assurance for manufacturing and distribution.

Q: Are there any performance differences between these parts?

A: No. Both parts deliver identical performance within the specified tolerance (±10%) and temperature coefficient (±100ppm/°C) ranges. Functional characteristics, adjustment resolution, and reliability are equivalent.