ST4TA102 Equivalent & Substitute Parts

Part Overview

The ST4TA102 is a 1 kOhms, 0.25W surface mount trimmer potentiometer with J Lead termination, top adjustment, and cermet resistive material. Manufactured by Vishay Beyschlag/Draloric/BC Components, this part is classified as obsolete. Due to its discontinued status, equivalent substitute parts from active manufacturers are necessary for new designs and ongoing production requirements. The substitute parts listed maintain identical electrical and mechanical specifications, ensuring direct functional compatibility.

Substiute Parts

ST4TA102

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 838ST4TA102 Datasheet

Current PartRFQ

23AR1KLFTR

TT Electronics/BIIn Stock: 1078123AR1KLFTR Datasheet

MFR RecommendedRFQ

ST-42ETA102

Nidec Components CorporationIn Stock: 750ST-42ETA102 Datasheet

MFR RecommendedRFQ

ST-4ETA102

Nidec Components CorporationIn Stock: 11392ST-4ETA102 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ST4TA102 is determined by strict equivalence across all critical electrical and mechanical parameters. The following parameters must match exactly for a part to serve as a direct substitute:

• Resistance value: 1 kOhms
• Power rating: 0.25W (1/4W)
• 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
• Physical dimensions: Rectangular - 0.197" x 0.177" Face (5.00mm x 4.50mm)
• Moisture sensitivity level: 1 (Unlimited)

All three substitute parts meet these criteria and are therefore electrically and mechanically interchangeable with the ST4TA102.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts are functionally equivalent to the ST4TA102 based on electrical and mechanical parameters. Selection among the substitutes should be based on product status and compliance requirements:

23AR1KLFTR (TT Electronics/BI): Active product status with RoHS Compliance. Available in Tape & Reel packaging with 10,703 pieces in stock.

ST-42ETA102 (Nidec Components Corporation): Active product status with ROHS3 Compliance. Available in Tape & Reel packaging with 716 pieces in stock.

ST-4ETA102 (Nidec Components Corporation): Active product status with ROHS3 Compliance. Available in Tape & Reel packaging with 11,333 pieces in stock. Shares the same base product series (ST4) as the original ST4TA102.

All substitute parts are REACH Unaffected and classified under ECCN EAR99 and HTSUS 8533.40.8050, matching the original part's regulatory classification.

Frequently Asked Questions (FAQ)

Q: Can ST4TA102 be directly replaced with any of these substitute parts?

A: Yes. All three substitute parts are direct functional equivalents. They match the ST4TA102 across all critical electrical parameters (resistance, power rating, tolerance, temperature coefficient, number of turns) and mechanical specifications (mounting type, termination style, physical dimensions, adjustment type, and resistive material).

Q: What is the difference between the substitute parts?

A: The substitute parts differ in manufacturer and product status. The 23AR1KLFTR is manufactured by TT Electronics/BI with RoHS Compliance. The ST-42ETA102 and ST-4ETA102 are both manufactured by Nidec Components Corporation with ROHS3 Compliance. The ST-4ETA102 shares the same ST4 series designation as the original part. All three are active products with adequate inventory availability.

Q: Are there packaging differences among the substitutes?

A: All three substitute parts are available in Tape & Reel (TR) packaging, which is standard for surface mount components. The original ST4TA102 packaging specification was not provided in the reference data.

Q: Does RoHS compliance status affect substitution?

A: The original ST4TA102 is RoHS non-compliant, while all substitute parts are RoHS or ROHS3 compliant. This represents an improvement in environmental compliance. For applications with RoHS requirements, the substitute parts are preferable. For legacy systems without RoHS mandates, the compliance difference does not affect electrical or mechanical compatibility.

Q: Which substitute part should be selected for new designs?

A: For new designs, any of the three active substitute parts are suitable. Selection may be based on manufacturer preference, supply chain considerations, or specific compliance certifications required by the application. The ST-4ETA102 maintains the same series designation as the original part, which may simplify documentation and traceability.