ST4TA202 Surface Mount Trimmer Potentiometer Equivalent & Substitute Parts

Part Overview

The ST4TA202 is a 2 kOhms, 0.25W surface mount trimmer potentiometer manufactured by Vishay Beyschlag/Draloric/BC Components. This cermet resistive element component features J lead termination with top adjustment capability and a single turn design. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing production, maintenance, and design updates. Active alternatives from current manufacturers provide direct functional replacement while maintaining electrical and mechanical compatibility.

Substiute Parts

ST4TA202

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 1048ST4TA202 Datasheet

Current PartRFQ

23AR2KLFTR

TT Electronics/BIIn Stock: 344423AR2KLFTR Datasheet

MFR RecommendedRFQ

3314S-1-202E

Bourns Inc.In Stock: 10873314S-1-202E Datasheet

MFR RecommendedRFQ

ST-42ETA202

Nidec Components CorporationIn Stock: 864ST-42ETA202 Datasheet

MFR RecommendedRFQ

ST-4ETA202

Nidec Components CorporationIn Stock: 10952ST-4ETA202 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ST4TA202 is determined by strict equivalence across the following critical parameters:

• Resistance value: 2 kOhms
• Power rating: 0.25W (1/4W)
• Tolerance: ±20%
• Temperature coefficient: ±100ppm/°C
• Number of turns: 1
• Resistive material: Cermet
• Mounting type: Surface Mount
• Termination style: J Lead
• Physical dimensions: 0.197" x 0.177" Face (5.00mm x 4.50mm)
• Moisture sensitivity level: 1 (Unlimited)

The substitute parts listed below meet all these core electrical and mechanical parameters. Minor variations in adjustment type (top versus side adjustment) are noted where they occur, as this affects user interface but not electrical performance or PCB footprint compatibility.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts maintain electrical equivalence to the ST4TA202 across resistance, power rating, tolerance, temperature coefficient, and physical dimensions. Selection among active alternatives should prioritize product status and compliance requirements:

23AR2KLFTR (TT Electronics/BI): Active product with RoHS compliance. Identical top adjustment configuration to the original part. Suitable for new designs and production requiring RoHS-compliant components.

ST-42ETA202 and ST-4ETA202 (Nidec Components Corporation): Both active products with ROHS3 compliance. ST-4ETA202 offers higher inventory availability (10,927 pcs) compared to ST-42ETA202 (785 pcs). Both maintain top adjustment matching the original design.

3314S-1-202E (Bourns Inc., Trimpot® 3314 - Sealed): Active product with ROHS3 compliance. Features side adjustment instead of top adjustment. Electrical parameters remain equivalent; adjustment type difference affects user interface and assembly procedures but not PCB footprint or electrical performance.

Frequently Asked Questions (FAQ)

Q: Can I substitute the ST4TA202 with any of these parts directly on the PCB?

A: Yes, all listed substitutes share identical physical dimensions (5.00mm x 4.50mm), J lead termination, and surface mount compatibility. Direct PCB footprint compatibility is maintained. The 3314S-1-202E differs only in adjustment location (side versus top), which does not affect electrical function or mounting.

Q: What is the difference between top adjustment and side adjustment?

A: Adjustment type refers to the physical location of the trimmer screw. Top adjustment allows access from above the component; side adjustment requires access from the side. Both provide identical electrical tuning capability. Selection depends on PCB layout and assembly accessibility requirements.

Q: Are all substitutes RoHS compliant?

A: The original ST4TA202 is RoHS non-compliant. All active substitutes (23AR2KLFTR, ST-42ETA202, ST-4ETA202, 3314S-1-202E) are RoHS or ROHS3 compliant, meeting current environmental regulations.

Q: Do these parts have the same electrical performance?

A: Yes. All parts share identical resistance (2 kOhms), power rating (0.25W), tolerance (±20%), temperature coefficient (±100ppm/°C), and cermet resistive material. Electrical performance is equivalent across all substitutes.

Q: What packaging options are available?

A: All substitute parts are supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes.

Q: Which substitute has the best inventory availability?

A: ST-4ETA202 offers the highest inventory level at 10,927 pcs, followed by 23AR2KLFTR at 3,391 pcs, 3314S-1-202E at 1,072 pcs, and ST-42ETA202 at 785 pcs.