ST-42ETB103 Equivalent & Substitute Parts

Part Overview

The ST-42ETB103 is a 10 kOhms 0.25W (1/4W) surface mount trimmer potentiometer manufactured by Nidec Components Corporation. This cermet-based component features gull wing termination and top adjustment capability, designed for precision resistance tuning applications in compact form factors. The part is currently active in production with 730 units available in new original stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity.

Substiute Parts

ST-42ETB103

Nidec Components CorporationIn Stock: 765ST-42ETB103 Datasheet

Current PartRFQ

23BR10KLFTR

TT Electronics/BIIn Stock: 222823BR10KLFTR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ST-42ETB103 is determined by strict equivalence across the following critical parameters:

• Resistance value: 10 kOhms (exact match required)
• Power rating: 0.25W, 1/4W (exact match required)
• Tolerance: ±20% (exact match required)
• Temperature coefficient: ±100ppm/°C (exact match required)
• Number of turns: 1 (exact match required)
• Adjustment type: Top Adjustment (exact match required)
• Resistive material: Cermet (exact match required)
• Mounting type: Surface Mount (exact match required)
• Termination style: Gull Wing (exact match required)
• Physical dimensions: Rectangular - 0.197" x 0.177" Face (5.00mm x 4.50mm) (exact match required)

The substitute part 23BR10KLFTR manufactured by TT Electronics/BI meets all specified parameters and qualifies as a direct equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both the ST-42ETB103 and 23BR10KLFTR are active production components with full regulatory compliance. The ST-42ETB103 carries ROHS3 certification, while the 23BR10KLFTR carries RoHS certification. Both parts maintain REACH Unaffected status and EAR99 export classification. Selection between these equivalents may be based on procurement availability, packaging format (the 23BR10KLFTR is available in Tape & Reel packaging), or inventory levels. The 23BR10KLFTR currently has higher stock availability at 2200 units compared to 730 units for the ST-42ETB103.

Frequently Asked Questions (FAQ)

Q: Can the 23BR10KLFTR be used as a direct replacement for the ST-42ETB103?

A: Yes. Both parts are electrically and mechanically equivalent across all specified parameters including resistance, power rating, tolerance, temperature coefficient, adjustment type, resistive material, mounting configuration, termination style, and physical dimensions.

Q: Are there differences in packaging between these parts?

A: The ST-42ETB103 packaging format is not specified in the provided data. The 23BR10KLFTR is supplied in Tape & Reel (TR) format. Verify packaging compatibility with your assembly process requirements.

Q: Do both parts meet environmental compliance requirements?

A: Yes. Both parts are RoHS compliant, REACH Unaffected, and classified as EAR99 for export purposes. The ST-42ETB103 specifically carries ROHS3 certification.

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

A: Both parts have Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Are the physical dimensions identical?

A: Yes. Both parts feature identical rectangular dimensions of 0.197" x 0.177" face (5.00mm x 4.50mm), ensuring compatibility with the same PCB footprint and assembly equipment.