ST5TW104 Equivalent & Substitute Parts

Part Overview

The ST5TW104 is a 100 kOhm, 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 discontinued status, identifying functionally equivalent active alternatives is essential for ongoing production, maintenance, and new design implementations.

Substiute Parts

ST5TW104

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 732ST5TW104 Datasheet

Current PartRFQ

ST-5ETW104

Nidec Components CorporationIn Stock: 7268ST-5ETW104 Datasheet

DirectRFQ

3269W-1-104G

Bourns Inc.In Stock: 7983269W-1-104G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ST5TW104 are identified based on the following critical parameters that determine functional equivalence:

• Resistance value: 100 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)

Variations in number of turns (12 vs. 14) and minor dimensional differences (within manufacturing tolerances) are acceptable provided all other electrical and mechanical parameters align. Packaging format differences do not affect functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

ST-5ETW104 (Nidec Components Corporation): This substitute provides the closest functional match to the ST5TW104. It maintains identical electrical specifications, physical dimensions, and turn count. The part is active in production with RoHS3 compliance, making it suitable for applications requiring modern regulatory adherence. Moisture sensitivity level remains at MSL 1, matching the original part's handling requirements.

3269W-1-104G (Bourns Inc.): This substitute meets all critical electrical parameters and maintains gull wing termination and top adjustment functionality. The 12-turn configuration differs from the original 14-turn design, which may affect adjustment resolution in applications requiring fine-tuning precision. Physical dimensions show minor variation (0.250" x 0.170" vs. 0.236" x 0.169"), requiring PCB layout verification. The part carries MSL 2 classification, imposing stricter moisture handling requirements. REACH Affected status indicates regulatory substance considerations for specific applications.

Frequently Asked Questions (FAQ)

Q: Can ST-5ETW104 be used as a direct replacement for ST5TW104? A: Yes. ST-5ETW104 maintains identical electrical specifications, physical dimensions, number of turns, and all mechanical parameters. It is the primary recommended substitute.

Q: What is the significance of the 12-turn vs. 14-turn difference in 3269W-1-104G? A: Turn count affects adjustment resolution. The 14-turn original provides finer adjustment granularity than the 12-turn substitute. Applications requiring precise potentiometer tuning should account for this difference in adjustment sensitivity.

Q: Are there PCB layout considerations when substituting 3269W-1-104G? A: Yes. The 3269W-1-104G has slightly larger dimensions (0.250" x 0.170" vs. 0.236" x 0.169"). PCB footprints must be verified for clearance compatibility before implementation.

Q: What does MSL 2 classification mean for 3269W-1-104G? A: MSL 2 requires storage at controlled humidity (≤60% RH) and limits shelf life to one year from manufacturing date. This is more restrictive than the MSL 1 classification of the original part, which has unlimited shelf life.

Q: How do RoHS and REACH compliance differences affect part selection? A: ST-5ETW104 is RoHS3 compliant, meeting current environmental regulations. The 3269W-1-104G is RoHS non-compliant but REACH Affected, requiring evaluation against specific application regulatory requirements. Selection depends on end-product compliance obligations.

Q: Can these substitutes be used interchangeably in existing designs? A: ST-5ETW104 is fully interchangeable. 3269W-1-104G requires design review due to dimensional variation and turn count difference, though electrical performance remains equivalent.