ST32TA203 Equivalent & Substitute Parts

Part Overview

The ST32TA203 is a 20 kOhms surface mount trimmer potentiometer manufactured by Vishay Beyschlag/Draloric/BC Components. This cermet-based trimmer features 0.125W power rating, ±20% tolerance, and top adjustment capability in a compact square package (3.40mm x 3.40mm). The product is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing maintenance, repair, and legacy system support.

Substiute Parts

ST32TA203

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 1138ST32TA203 Datasheet

Current PartRFQ

ST-32ETA203

Nidec Components CorporationIn Stock: 20236ST-32ETA203 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ST32TA203 is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part ST-32ETA203 qualifies as a direct equivalent based on the following criteria:

• Identical resistance value: 20 kOhms
• Identical power rating: 0.125W (1/8W)
• Identical tolerance: ±20%
• Identical temperature coefficient: ±100ppm/°C
• Identical number of turns: 1
• Identical adjustment type: Top Adjustment
• Identical resistive material: Cermet
• Identical mounting type: Surface Mount
• Identical termination style: J Lead
• Identical package dimensions: Square - 0.134" x 0.134" (3.40mm x 3.40mm)
• Identical moisture sensitivity level: MSL 1 (Unlimited)

Both parts belong to the ST-32 series and share identical electrical performance characteristics and physical form factors, confirming direct substitutability.

Parameter Comparison

Engineering Selection Recommendations

The ST-32ETA203 manufactured by Nidec Components Corporation is the direct functional equivalent for the obsolete ST32TA203. Selection of the ST-32ETA203 is supported by:

• Complete electrical parameter equivalence across all specified characteristics
• Identical physical form factor and mounting interface
• Active product status ensuring ongoing availability
• ROHS3 compliance, providing regulatory advantage over the non-compliant original part
• Maintained series designation (ST-32) confirming design continuity

For applications requiring RoHS non-compliant components, the original ST32TA203 remains available in inventory (1128 pcs). For new designs or systems requiring regulatory compliance, the ST-32ETA203 is the appropriate selection.

Frequently Asked Questions (FAQ)

Q: Can ST-32ETA203 be used as a direct replacement for ST32TA203 in existing assemblies?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters. The ST-32ETA203 features identical resistance, power rating, tolerance, temperature coefficient, adjustment type, resistive material, mounting type, termination style, and package dimensions. No circuit modifications or PCB layout changes are required.

Q: What is the difference between the two parts?

A: The primary differences are manufacturer (Vishay vs. Nidec), product status (Obsolete vs. Active), and RoHS compliance (non-compliant vs. ROHS3 compliant). Electrical and mechanical specifications are identical.

Q: Are there packaging differences between ST32TA203 and ST-32ETA203?

A: The ST32TA203 is specified with standard packaging, while the ST-32ETA203 is available in Tape & Reel (TR) format. Both maintain identical component dimensions and electrical characteristics. Tape & Reel packaging is standard for surface mount production environments.

Q: Does the RoHS3 compliance of ST-32ETA203 affect circuit performance?

A: No. RoHS3 compliance indicates material composition restrictions but does not alter electrical performance, tolerance, temperature coefficient, or functional characteristics. The part operates identically to the original ST32TA203.

Q: Can these parts be mixed in the same production batch?

A: Yes, provided the application does not require specific RoHS compliance or manufacturer designation. Both parts meet identical electrical and mechanical specifications and are functionally interchangeable.