ST5TW502 Equivalent & Substitute Parts

Part Overview

The ST5TW502 is a 5 kOhm, 0.25W surface mount trimmer potentiometer with Cermet resistive material, gull wing termination, and 14-turn top adjustment. Manufactured by Vishay Beyschlag/Draloric/BC Components, this part is classified as obsolete. Due to its obsolete status and limited ongoing availability, equivalent substitute parts from active manufacturers are necessary for new designs and production continuity.

Substiute Parts

ST5TW502

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 918ST5TW502 Datasheet

Current PartRFQ

3269W-1-502G

Bourns Inc.In Stock: 7393269W-1-502G Datasheet

MFR RecommendedRFQ

ST-5ETW502

Nidec Components CorporationIn Stock: 4992ST-5ETW502 Datasheet

MFR RecommendedRFQ

ST-5EW502

Nidec Components CorporationIn Stock: 1011ST-5EW502 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ST5TW502 are qualified based on the following critical parameters:

• Resistance value: 5 kOhms (exact match required)
• Power rating: 0.25W, 1/4W (exact match required)
• Tolerance: ±10% (exact match required)
• Temperature coefficient: ±100ppm/°C (exact match required)
• Adjustment type: Top Adjustment (exact match required)
• Resistive material: Cermet (exact match required)
• Mounting type: Surface Mount (exact match required)
• Termination style: Gull Wing (exact match required)

Substitutes are grouped into two categories based on turn count and dimensional compatibility:

Group 1 (Direct Mechanical Equivalents): Parts with 14-turn configuration and identical face dimensions (6.00mm x 4.30mm). These provide direct form-fit-function replacement.

Group 2 (Functional Equivalents with Minor Dimensional Variance): Parts with 12-turn configuration and slightly different face dimensions (6.35mm x 4.32mm). These maintain electrical equivalence but require PCB layout verification due to dimensional differences.

Parameter Comparison

Engineering Selection Recommendations

ST-5ETW502 (Nidec Components Corporation): This part is the primary substitute for the ST5TW502. It maintains identical electrical specifications, turn count, and physical dimensions. The part is active in production with ROHS3 compliance, providing regulatory advantage for new designs. Tape & Reel packaging supports automated assembly processes.

ST-5EW502 (Nidec Components Corporation): This part is electrically and mechanically identical to ST-5ETW502 but supplied in bulk packaging. It is suitable for applications where tape & reel packaging is not required and offers the same active production status and compliance profile.

3269W-1-502G (Bourns Inc., Trimpot® 3269 Series): This part provides functional equivalence with all critical electrical parameters matching the ST5TW502. The 12-turn configuration and slightly larger face dimensions (6.35mm x 4.32mm versus 6.00mm x 4.30mm) require PCB layout verification. The higher moisture sensitivity level (MSL 2) may impact storage and handling procedures. This part is suitable when dimensional variance is acceptable and Bourns component qualification is required.

Frequently Asked Questions (FAQ)

Q: Can ST-5ETW502 be used as a direct replacement for ST5TW502?

A: Yes. ST-5ETW502 matches all critical electrical parameters (5 kOhms, 0.25W, ±10% tolerance, ±100ppm/°C temperature coefficient, 14-turn configuration) and maintains identical physical dimensions (6.00mm x 4.30mm face). No PCB layout modifications are required.

Q: What is the difference between ST-5ETW502 and ST-5EW502?

A: Both parts are electrically and mechanically identical. The difference is packaging: ST-5ETW502 is supplied in Tape & Reel format for automated assembly, while ST-5EW502 is supplied in bulk. Select based on assembly process requirements.

Q: Can 3269W-1-502G replace ST5TW502 without PCB modifications?

A: 3269W-1-502G maintains electrical equivalence but has a 12-turn configuration (versus 14 turns) and slightly larger face dimensions (6.35mm x 4.32mm versus 6.00mm x 4.30mm). PCB layout verification is required to confirm mechanical fit. The adjustment resolution differs due to turn count variance.

Q: What is the impact of MSL 2 rating on 3269W-1-502G?

A: MSL 2 requires storage at controlled humidity (≤60% RH) for up to one year. The ST5TW502 and Nidec alternatives have MSL 1 (unlimited storage). If extended storage or high-humidity environments are factors, Nidec parts are preferred.

Q: Are there RoHS compliance differences between substitutes?

A: ST-5ETW502 is ROHS3 compliant, supporting modern regulatory requirements. ST5TW502 and 3269W-1-502G are non-compliant. For new designs subject to RoHS regulations, ST-5ETW502 is the appropriate selection.

Q: How do turn count differences affect circuit performance?

A: Turn count affects adjustment resolution and mechanical torque characteristics. The 14-turn ST5TW502 and its Nidec equivalents provide finer adjustment resolution than the 12-turn 3269W-1-502G. For applications requiring precise tuning, maintain 14-turn configuration.