ST4TA103 Surface Mount Trimmer Potentiometer Equivalent & Substitute Parts

Part Overview

The ST4TA103 is a 10 kOhms, 0.25W surface mount trimmer potentiometer with J Lead termination and top adjustment capability. Manufactured by Vishay Beyschlag/Draloric/BC Components, this component features cermet resistive material and is classified as obsolete. Due to its obsolete status, equivalent active alternatives are available from current manufacturers that maintain identical electrical and mechanical specifications, ensuring direct functional replacement in existing designs.

Substiute Parts

ST4TA103

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 836ST4TA103 Datasheet

Current PartRFQ

23AR10KLFTR

TT Electronics/BIIn Stock: 208723AR10KLFTR Datasheet

MFR RecommendedRFQ

ST-42ETA103

Nidec Components CorporationIn Stock: 1147ST-42ETA103 Datasheet

MFR RecommendedRFQ

ST-4ETA103

Nidec Components CorporationIn Stock: 1938ST-4ETA103 Datasheet

MFR RecommendedRFQ

ST42EA103

Nidec Components CorporationIn Stock: 986ST42EA103 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ST4TA103 is determined by strict equivalence across the following critical parameters: resistance value (10 kOhms), power rating (0.25W), tolerance (±20%), temperature coefficient (±100ppm/°C), number of turns (1), adjustment type (top adjustment), resistive material (cermet), mounting type (surface mount), termination style (J Lead), and physical dimensions (0.197" x 0.177" face). All identified substitute parts meet these requirements without exception. Packaging format and product status are secondary considerations that do not affect electrical or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

All four substitute parts provide complete electrical and mechanical equivalence to the ST4TA103. Selection among these alternatives should be based on product status, regulatory compliance requirements, and packaging needs.

For new designs or production requiring RoHS compliance, 23AR10KLFTR, ST-4ETA103, and ST-42ETA103 are all active products with current RoHS certifications. The 23AR10KLFTR from TT Electronics/BI carries RoHS Compliant status and is supplied in Tape & Reel packaging, suitable for automated assembly. ST-4ETA103 and ST-42ETA103 from Nidec Components Corporation both carry ROHS3 Compliant status and are available in Tape & Reel format.

For applications where packaging format is a consideration, ST42EA103 is available in bulk packaging from Nidec Components Corporation, though RoHS status is not specified for this variant.

All substitute parts share identical electrical performance characteristics and physical dimensions, ensuring direct PCB compatibility without design modification.

Frequently Asked Questions (FAQ)

Q: Can ST4TA103 be directly replaced with any of these substitute parts?

A: Yes. All four substitute parts are electrically and mechanically equivalent. They share identical resistance (10 kOhms), power rating (0.25W), tolerance (±20%), temperature coefficient (±100ppm/°C), adjustment type (top adjustment), resistive material (cermet), mounting type (surface mount), termination style (J Lead), and physical dimensions (0.197" x 0.177" face). Direct substitution is possible without circuit modification.

Q: What is the primary reason for seeking substitutes for ST4TA103?

A: The ST4TA103 is classified as obsolete. Active alternatives from current manufacturers ensure continued supply chain availability and access to current production quality and certifications.

Q: Are there RoHS compliance differences between the main part and substitutes?

A: Yes. The ST4TA103 is RoHS non-compliant. Three of the four substitutes (23AR10KLFTR, ST-4ETA103, ST-42ETA103) are RoHS compliant or ROHS3 compliant. ST42EA103 does not specify RoHS status. For applications requiring RoHS compliance, select from the three compliant alternatives.

Q: Does packaging format affect electrical performance?

A: No. Packaging format (Tape & Reel or Bulk) does not affect electrical or mechanical performance. Selection should be based on assembly process requirements and inventory management practices.

Q: Are all substitutes available in the same physical footprint?

A: Yes. All substitute parts maintain the identical rectangular dimension of 0.197" x 0.177" face (5.00mm x 4.50mm), ensuring PCB layout compatibility without modification.

Q: Which substitute offers the best long-term availability?

A: All four substitutes are classified as active products. Long-term availability is supported by current manufacturer status for all alternatives.