ST-4ETH502 Trimmer Potentiometer Equivalent & Substitute Parts

Part Overview

The ST-4ETH502 is a 5 kOhm, 0.25W surface mount trimmer potentiometer manufactured by Nidec Components Corporation. This cermet-based component features gull wing termination and side adjustment capability, designed for precision tuning applications in compact form factors. The part is currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts may be required due to inventory constraints, supply chain disruptions, or specific application requirements for alternative adjustment mechanisms.

Substiute Parts

ST-4ETH502

Nidec Components CorporationIn Stock: 914ST-4ETH502 Datasheet

Current PartRFQ

23BR5KLFTR

TT Electronics/BIIn Stock: 1225723BR5KLFTR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The ST-4ETH502 can be substituted with the 23BR5KLFTR based on the following electrical and mechanical compatibility criteria:

Matching Parameters:

• Resistance value: 5 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: Gull Wing
• Physical dimensions: Rectangular - 0.197" x 0.177" Face (5.00mm x 4.50mm)
• MSL rating: 1 (Unlimited)

Difference:

• Adjustment type: ST-4ETH502 features side adjustment, while 23BR5KLFTR features top adjustment

This substitution is valid for applications where the adjustment mechanism location does not impact circuit board layout or accessibility requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the ST-4ETH502 and 23BR5KLFTR are active production components with full compliance to environmental and regulatory standards. The ST-4ETH502 maintains RoHS3 compliance, while the 23BR5KLFTR meets RoHS compliance requirements. Both components carry unlimited moisture sensitivity ratings and are classified under the same HTSUS code (8533.40.8050), confirming their functional equivalence.

Selection between these parts should be based on circuit board layout constraints and accessibility requirements for the adjustment mechanism. The side adjustment feature of the ST-4ETH502 may be preferred for designs where top-mounted components restrict access, while the top adjustment of the 23BR5KLFTR may be advantageous for applications requiring direct operator access from above the board.

Frequently Asked Questions (FAQ)

Q: Can the 23BR5KLFTR directly replace the ST-4ETH502 in my circuit?

A: Yes, the 23BR5KLFTR is electrically and mechanically compatible with the ST-4ETH502. Both components share identical resistance, power rating, tolerance, temperature coefficient, and physical dimensions. The primary difference is the adjustment mechanism location (top versus side), which does not affect electrical performance but may impact board layout and accessibility.

Q: What is the significance of the adjustment type difference?

A: The adjustment type determines where the trimmer potentiometer screw is accessed. Side adjustment allows tuning from the side of the component, while top adjustment requires access from above. This difference is purely mechanical and does not affect the electrical characteristics or performance of the trimmer potentiometer.

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

A: Both the ST-4ETH502 and 23BR5KLFTR are active production components with full compliance certifications. The ST-4ETH502 carries RoHS3 compliance, while the 23BR5KLFTR meets RoHS compliance. Both maintain unlimited moisture sensitivity ratings (MSL 1), making them suitable for standard manufacturing and storage conditions.

Q: Do these parts require different PCB footprints?

A: No. Both components feature identical physical dimensions (Rectangular - 0.197" x 0.177" Face, 5.00mm x 4.50mm) and gull wing termination style, allowing them to use the same PCB footprint and assembly process.

Q: What packaging format is available for these parts?

A: Both the ST-4ETH502 and 23BR5KLFTR are supplied in Tape & Reel (TR) packaging, suitable for automated pick-and-place assembly operations.