ST-32ETA200 Trimmer Potentiometer Equivalent & Substitute Parts

Part Overview

The ST-32ETA200 is a surface mount trimmer potentiometer manufactured by Nidec Components Corporation. This 20 Ohm, 0.125W cermet trimmer features J lead termination with top adjustment capability and 1.0 turn operation. The component is actively produced and stocked, with RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical and mechanical specifications are required for design flexibility, inventory management, or supply chain continuity.

Substiute Parts

ST-32ETA200

Nidec Components CorporationIn Stock: 2722ST-32ETA200 Datasheet

Current PartRFQ

22AR200LFTR

TT Electronics/BIIn Stock: 2117522AR200LFTR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ST-32ETA200 is determined by the following critical parameters:

• Resistance value matching or functional equivalence within application tolerance
• Power rating equal to or greater than 0.125W
• Identical adjustment type (top adjustment)
• Identical termination style (J lead)
• Surface mount package compatibility
• Cermet resistive material composition
• Number of turns (1.0 turn operation)

The identified substitute part 22AR200LFTR does not meet the primary substitution criterion: resistance value. The 22AR200LFTR is rated at 200 Ohms, which represents a 10x difference from the ST-32ETA200's 20 Ohm specification. This fundamental electrical parameter mismatch disqualifies this part as a direct substitute for applications requiring 20 Ohm trimmer potentiometers.

Parameter Comparison

Engineering Selection Recommendations

The ST-32ETA200 is the specified component for applications requiring 20 Ohm trimmer potentiometer functionality. Both the ST-32ETA200 and 22AR200LFTR maintain active product status and full compliance with RoHS3 and REACH requirements. However, direct substitution of the 22AR200LFTR is not applicable due to the 10x resistance value difference. Selection of alternative components must be based on matching the exact resistance specification required by the circuit design.

For applications requiring 200 Ohm trimmer potentiometers, the 22AR200LFTR from TT Electronics/BI is a viable option with equivalent mechanical and electrical characteristics within its resistance class.

Frequently Asked Questions (FAQ)

Q: Can the 22AR200LFTR replace the ST-32ETA200 in my circuit?

A: No. The 22AR200LFTR is rated at 200 Ohms while the ST-32ETA200 is 20 Ohms. This 10x resistance difference makes direct substitution impossible. Component selection must match the circuit's resistance requirement.

Q: What makes two trimmer potentiometers substitutable?

A: Substitutable trimmer potentiometers must share identical or functionally equivalent resistance values, power ratings, adjustment types, termination styles, and mounting configurations. Mechanical package dimensions must also be compatible with PCB layout constraints.

Q: Are the package dimensions interchangeable between these parts?

A: The ST-32ETA200 uses a square 3.40mm x 3.40mm package, while the 22AR200LFTR uses a rectangular 4.60mm x 3.20mm package. Although dimensions are similar, PCB footprint designs are specific to each package geometry and are not interchangeable.

Q: What is the significance of the temperature coefficient difference?

A: The ST-32ETA200 has a temperature coefficient of ±250ppm/°C while the 22AR200LFTR is ±100ppm/°C. This indicates the 22AR200LFTR exhibits better resistance stability across temperature variations. This parameter is relevant only when comparing parts within the same resistance value.

Q: Are both parts suitable for high-reliability applications?

A: Both the ST-32ETA200 and 22AR200LFTR meet RoHS3 compliance and carry MSL 1 (unlimited) moisture sensitivity ratings, making them suitable for standard industrial and commercial applications. Specific reliability requirements should be verified against application specifications.