ST5TP503 Equivalent & Substitute Parts

Part Overview

The ST5TP503 is a 50 kOhm, 0.25W surface mount trimmer potentiometer with Cermet resistive material, 14-turn side adjustment, and gull wing termination. Manufactured by Vishay Beyschlag/Draloric/BC Components, this component is classified as obsolete. Due to its discontinued status, identifying functionally equivalent substitute parts is essential for design continuity, production planning, and long-term component sourcing strategies.

Substiute Parts

ST5TP503

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 878ST5TP503 Datasheet

Current PartRFQ

ST-5ETP503

Nidec Components CorporationIn Stock: 1911ST-5ETP503 Datasheet

DirectRFQ

3269P-1-503G

Bourns Inc.In Stock: 9693269P-1-503G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ST5TP503 are identified based on electrical and mechanical parameter compatibility. The critical parameters determining substitution eligibility are:

• Resistance value: 50 kOhms (exact match required)
• Power rating: 0.25W (exact match required)
• Tolerance: ±10% (exact match required)
• Temperature coefficient: ±100ppm/°C (exact match required)
• Adjustment type: Side Adjustment (exact match required)
• Resistive material: Cermet (exact match required)
• Mounting type: Surface Mount (exact match required)
• Termination style: Gull Wing (exact match required)

The substitute parts listed below meet all critical electrical parameters. Variations in number of turns and physical dimensions are noted, as these may affect circuit performance and PCB layout compatibility.

Parameter Comparison

Engineering Selection Recommendations

ST-5ETP503 (Nidec Components Corporation): This substitute maintains exact electrical specifications and identical turn count (14 turns) to the original ST5TP503. The component is currently in active production status with RoHS3 compliance. Physical dimensions are slightly larger (6.75mm x 6.00mm versus 6.00mm x 4.30mm), requiring PCB layout verification. MSL 1 rating matches the original part.

3269P-1-503G (Bourns Inc.): This substitute meets all critical electrical parameters with identical resistance, power rating, tolerance, and temperature coefficient. The component features 12 turns instead of 14, which affects adjustment resolution and may impact circuit tuning characteristics. Physical dimensions are comparable to the original (6.35mm x 4.32mm). MSL 2 rating indicates one-year moisture sensitivity versus unlimited for the original. RoHS non-compliance status matches the original part.

Selection between these substitutes depends on specific application requirements regarding turn count, physical footprint constraints, and regulatory compliance needs.

Frequently Asked Questions (FAQ)

Q: Can ST-5ETP503 be used as a direct replacement for ST5TP503?

A: ST-5ETP503 matches all critical electrical parameters and maintains the same 14-turn count. However, physical dimensions differ slightly (6.75mm x 6.00mm versus 6.00mm x 4.30mm). PCB layout compatibility must be verified before implementation.

Q: What is the impact of using 3269P-1-503G with 12 turns instead of 14 turns?

A: The 12-turn configuration provides coarser adjustment resolution compared to the 14-turn original. This affects tuning sensitivity and may require circuit design adjustments if precise potentiometer control is critical to application performance.

Q: Are there compliance differences between the substitute parts?

A: ST-5ETP503 is RoHS3 compliant, while 3269P-1-503G is RoHS non-compliant, matching the original ST5TP503. Regulatory requirements for your application determine which substitute is appropriate.

Q: What does MSL 2 rating on 3269P-1-503G mean compared to MSL 1 on the original?

A: MSL 2 indicates one-year moisture sensitivity, requiring controlled storage and handling conditions. The original ST5TP503 has MSL 1 (unlimited moisture sensitivity), offering greater flexibility in storage and handling. 3269P-1-503G requires more stringent moisture control during manufacturing and assembly.

Q: Are physical dimension differences critical for PCB redesign?

A: Physical dimension variations require PCB layout verification. ST-5ETP503 is larger (6.75mm x 6.00mm), while 3269P-1-503G is comparable (6.35mm x 4.32mm) to the original. Footprint compatibility must be confirmed before design implementation.