ST-42ETH202 Equivalent & Substitute Parts

Part Overview

The ST-42ETH202 is a 2 kOhms, 0.25W surface mount trimmer potentiometer manufactured by Nidec Components Corporation. This Cermet-based component features gull wing termination, side adjustment capability, and a single turn design. The part is currently in active production status with 873 units available in inventory. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and compliance certifications align with the original component, enabling direct replacement in applications where adjustment method differences are acceptable.

Substiute Parts

ST-42ETH202

Nidec Components CorporationIn Stock: 904ST-42ETH202 Datasheet

Current PartRFQ

23BR2KLFTR

TT Electronics/BIIn Stock: 144823BR2KLFTR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ST-42ETH202 are identified based on the following critical parameters that must remain constant:

• 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: Gull Wing
• Physical dimensions: 0.197" x 0.177" Face (5.00mm x 4.50mm)
• Moisture sensitivity level: 1 (Unlimited)

The primary difference between the main part and identified substitutes is the adjustment method (side adjustment versus top adjustment). This parameter does not affect electrical performance or mechanical compatibility in applications where the adjustment interface is accessible from the specified direction.

Parameter Comparison

Engineering Selection Recommendations

Both the ST-42ETH202 and 23BR2KLFTR are active production components with full compliance certifications. The ST-42ETH202 maintains ROHS3 compliance, while the 23BR2KLFTR maintains RoHS compliance. Both parts are REACH unaffected and classified under ECCN EAR99. Selection between these parts should be based on adjustment accessibility requirements within the application. The ST-42ETH202 provides side adjustment access, while the 23BR2KLFTR provides top adjustment access. Electrical performance and mechanical fit are equivalent across both components.

Frequently Asked Questions (FAQ)

Q: Can the 23BR2KLFTR replace the ST-42ETH202 in existing designs?

A: Yes, provided the application design accommodates top adjustment access instead of side adjustment. All electrical parameters, physical dimensions, and compliance certifications are equivalent.

Q: What is the primary difference between these substitute parts?

A: The adjustment method differs. The ST-42ETH202 features side adjustment, while the 23BR2KLFTR features top adjustment. This affects only the physical access point for potentiometer tuning and does not impact electrical performance.

Q: Are the physical dimensions identical?

A: Yes. Both parts share the same rectangular face dimension of 0.197" x 0.177" (5.00mm x 4.50mm), ensuring identical PCB footprint compatibility.

Q: Do both parts meet the same compliance standards?

A: Both parts are RoHS compliant, REACH unaffected, and classified as EAR99. The ST-42ETH202 carries ROHS3 certification, while the 23BR2KLFTR carries standard RoHS certification. Both meet the moisture sensitivity level 1 (unlimited) specification.

Q: Are the electrical specifications identical?

A: Yes. Both parts provide 2 kOhms resistance at 0.25W power rating with ±20% tolerance, ±100ppm/°C temperature coefficient, and single-turn operation using Cermet resistive material.