ST5TW103 Equivalent & Substitute Parts

Part Overview

The ST5TW103 is a 10 kOhms 0.25W surface mount trimmer potentiometer with Cermet resistive material, 14-turn top adjustment, and gull wing termination. Manufactured by Vishay Beyschlag/Draloric/BC Components, this part is classified as obsolete. Due to its obsolete status and limited inventory availability (654 pcs), identifying equivalent and substitute parts is necessary for design continuity and procurement planning.

Substiute Parts

ST5TW103

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 668ST5TW103 Datasheet

Current PartRFQ

ST-5ETW103

Nidec Components CorporationIn Stock: 30100ST-5ETW103 Datasheet

DirectRFQ

3269W-1-103G

Bourns Inc.In Stock: 11893269W-1-103G Datasheet

MFR RecommendedRFQ

ST-5EW103

Nidec Components CorporationIn Stock: 1042ST-5EW103 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ST5TW103 is determined by the following critical parameters:

• Resistance value: 10 kOhms (exact match required)
• Power rating: 0.25W minimum
• Tolerance: ±10% or better
• Temperature coefficient: ±100ppm/°C or better
• Adjustment type: Top adjustment
• Resistive material: Cermet
• Mounting type: Surface mount
• Termination style: Gull wing
• Physical dimensions: Compatible with 6.00mm x 4.30mm footprint

The substitute parts identified meet these core electrical and mechanical parameters. Variations in turn count (14 vs. 12 turns) and packaging format are noted as secondary considerations that may affect application suitability.

Parameter Comparison

Engineering Selection Recommendations

ST-5ETW103 (Nidec Components Corporation) is the primary substitute. It maintains identical electrical specifications, physical dimensions, and turn count (14 turns) to the ST5TW103. This part is active in production with substantial inventory availability (30,059 pcs) and carries RoHS3 compliance, addressing regulatory requirements for new designs.

ST-5EW103 (Nidec Components Corporation) is a secondary substitute with identical specifications to ST-5ETW103 but supplied in bulk packaging rather than tape and reel format. This part is suitable for applications where packaging format does not impose constraints.

3269W-1-103G (Bourns Inc. Trimpot® 3269 - Sealed series) is a functional substitute with equivalent electrical performance. This part differs in turn count (12 turns versus 14 turns) and physical dimensions (6.35mm x 4.32mm versus 6.00mm x 4.30mm). The reduced turn count may affect adjustment resolution. Moisture sensitivity level is MSL 2, requiring controlled storage conditions. This part is suitable only when footprint tolerance and adjustment resolution requirements permit the specified variations.

Frequently Asked Questions (FAQ)

Q: Can ST-5ETW103 directly replace ST5TW103 in existing designs?

A: Yes. ST-5ETW103 maintains identical electrical specifications, physical dimensions, turn count, and termination style. No design modifications are required for direct substitution.

Q: What is the significance of the 14-turn versus 12-turn difference between ST5TW103 and 3269W-1-103G?

A: Turn count affects adjustment resolution. The 14-turn design provides finer adjustment granularity compared to the 12-turn design. Applications requiring precise potentiometer adjustment should maintain the 14-turn specification.

Q: Are there packaging considerations when selecting between ST-5ETW103 and ST-5EW103?

A: ST-5ETW103 is supplied in tape and reel format, suitable for automated assembly processes. ST-5EW103 is supplied in bulk packaging, suitable for manual assembly or lower-volume applications. Electrical and mechanical specifications are identical.

Q: Does the physical dimension difference between 3269W-1-103G and ST5TW103 affect PCB layout?

A: Yes. 3269W-1-103G has a slightly larger footprint (6.35mm x 4.32mm versus 6.00mm x 4.30mm). PCB layout must accommodate this difference. Verify footprint compatibility before design implementation.

Q: What is the impact of MSL 2 rating on 3269W-1-103G compared to MSL 1 on ST5TW103?

A: MSL 2 requires controlled storage conditions (1 year maximum shelf life at specified humidity levels). MSL 1 has unlimited shelf life. Supply chain and inventory management procedures must account for this difference when using 3269W-1-103G.

Q: Is RoHS compliance a factor in substitute selection?

A: RoHS compliance status varies among substitutes. ST-5ETW103 is RoHS3 compliant. ST5TW103 and 3269W-1-103G are non-compliant. Design requirements and regulatory obligations determine whether RoHS compliance is mandatory for your application.