ST-42ETA501 Equivalent & Substitute Parts

Part Overview

The ST-42ETA501 is a 500 Ohm, 0.25W surface mount trimmer potentiometer manufactured by Nidec Components Corporation. This cermet-based component features J lead termination, top adjustment capability, and a single turn design housed in a rectangular 5.00mm x 4.50mm package. The part maintains active product status and is RoHS3 compliant with unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and compliance certifications align with the original component requirements.

Substiute Parts

ST-42ETA501

Nidec Components CorporationIn Stock: 1015ST-42ETA501 Datasheet

Current PartRFQ

23AR500LFTR

TT Electronics/BIIn Stock: 1658823AR500LFTR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The 23AR500LFTR qualifies as a direct substitute for the ST-42ETA501 based on the following critical parameters:

• Identical resistance value: 500 Ohms
• Matching power rating: 0.25W (1/4W)
• Equivalent tolerance: ±20%
• Identical temperature coefficient: ±100ppm/°C
• Same number of turns: 1
• Matching adjustment type: Top Adjustment
• Identical resistive material: Cermet
• Same mounting type: Surface Mount
• Matching termination style: J Lead
• Identical package dimensions: Rectangular - 0.197" x 0.177" Face (5.00mm x 4.50mm)
• Equivalent compliance: RoHS Compliant and REACH Unaffected

Parameter Comparison

Engineering Selection Recommendations

Both the ST-42ETA501 and 23AR500LFTR maintain active product status and satisfy equivalent compliance requirements. The ST-42ETA501 is supplied in Tape & Reel (TR) packaging with 919 units in stock, while the 23AR500LFTR is available in Cut Tape (CT) and Digi-Reel® packaging with 16,486 units in stock. Selection between these components should be based on packaging format requirements and inventory availability. Both components meet RoHS and REACH compliance standards with identical electrical and mechanical specifications.

Frequently Asked Questions (FAQ)

Q: Can the 23AR500LFTR replace the ST-42ETA501 in existing designs?

A: Yes. The 23AR500LFTR is electrically and mechanically equivalent to the ST-42ETA501. Both components share identical resistance, power rating, tolerance, temperature coefficient, number of turns, adjustment type, resistive material, mounting type, termination style, and package dimensions.

Q: What are the key differences between these two parts?

A: The primary differences are manufacturer identity and packaging format. The ST-42ETA501 is supplied by Nidec Components Corporation in Tape & Reel packaging, while the 23AR500LFTR is supplied by TT Electronics/BI in Cut Tape and Digi-Reel® packaging. Both components meet equivalent compliance standards.

Q: Are there packaging considerations when substituting these parts?

A: Yes. The ST-42ETA501 uses Tape & Reel (TR) packaging, while the 23AR500LFTR uses Cut Tape (CT) and Digi-Reel® packaging. Verify that your assembly process and equipment are compatible with the selected packaging format.

Q: Do both parts meet the same compliance standards?

A: Both components are RoHS compliant and REACH unaffected. The ST-42ETA501 carries RoHS3 certification, while the 23AR500LFTR carries RoHS certification. Both share identical ECCN (EAR99) and HTSUS (8533.40.8050) classifications.

Q: What is the moisture sensitivity level for these components?

A: Both the ST-42ETA501 and 23AR500LFTR carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage or handling.