Bourns 3386X-EY5-503 Trimmer Potentiometer Equivalent & Substitute Parts

Part Overview

The Bourns 3386X-EY5-503 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 cermet resistive elements and compact form factors.

The part is currently active in production. Identifying equivalent and substitute parts is necessary when the primary part number becomes unavailable, when supply chain constraints require alternative sourcing, or when design requirements permit selection from compatible variants within the same product family.

Substiute Parts

3386X-EY5-503

Bourns Inc.In Stock: 7073386X-EY5-503 Datasheet

Current PartRFQ

3386X-1-503LF

Bourns Inc.In Stock: 21003386X-1-503LF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3386X-EY5-503 is determined by strict equivalence across the following critical parameters:

• Resistance value: 50 kOhms
• Power rating: 0.5W (1/2W)
• Tolerance: ±10%
• Temperature coefficient: ±100ppm/°C
• Number of turns: 1
• Adjustment type: Side 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)
• Series family: Trimpot® 3386 - Sealed

The substitute part 3386X-1-503LF meets all electrical and mechanical parameters required for direct substitution. Differences in RoHS compliance status and REACH classification do not affect functional equivalence but may impact regulatory requirements for specific applications or end markets.

Parameter Comparison

Engineering Selection Recommendations

The 3386X-1-503LF is a direct functional equivalent to the 3386X-EY5-503 across all electrical and mechanical specifications. Selection between these parts should be based on regulatory and compliance requirements specific to the application and target market.

The 3386X-1-503LF offers improved compliance status, meeting ROHS3 requirements and carrying REACH Unaffected classification. This variant is suitable for applications subject to European Union environmental directives or customer specifications requiring RoHS compliance.

The 3386X-EY5-503 remains suitable for applications where RoHS compliance is not mandated and REACH Affected status is acceptable. Both parts are active products with established supply availability.

Frequently Asked Questions (FAQ)

Q: Can the 3386X-1-503LF be used as a direct replacement for the 3386X-EY5-503?

A: Yes. Both parts are electrically and mechanically identical across all functional parameters: 50 kOhm resistance, 0.5W power rating, ±10% tolerance, ±100ppm/°C temperature coefficient, 1-turn side adjustment, cermet resistive element, through-hole mounting with PC pins, and identical physical dimensions. The parts differ only in RoHS and REACH compliance status.

Q: What is the significance of the RoHS compliance difference?

A: RoHS compliance indicates conformance to the Restriction of Hazardous Substances Directive. The 3386X-1-503LF meets ROHS3 requirements, while the 3386X-EY5-503 does not. Selection depends on whether the application or end market requires RoHS compliance certification.

Q: Are the physical dimensions identical?

A: Yes. Both parts share the same square form factor of 0.375" x 0.375" (9.53mm x 9.53mm) and are packaged in tubes. They are mechanically interchangeable in PCB layouts and mechanical assemblies.

Q: What does REACH Affected versus REACH Unaffected mean?

A: REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) is a European Union regulation. REACH Unaffected status indicates the part does not contain substances of very high concern (SVHC) listed under REACH. REACH Affected status indicates potential presence of listed substances. Regulatory requirements vary by application and market.

Q: Are there inventory considerations when selecting between these parts?

A: The 3386X-EY5-503 has 687 pieces in stock, while the 3386X-1-503LF has 2000 pieces available. Availability may influence sourcing decisions based on project timelines and volume requirements.