ST-42ETH502 Equivalent & Substitute Parts

Part Overview

The ST-42ETH502 is a 5 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 1.0 turn configuration in a compact rectangular package (5.00mm x 4.50mm). The part is Active status and ROHS3 compliant, making it suitable for modern electronic assemblies requiring precision resistive adjustment in space-constrained applications. Equivalent parts are identified when identical electrical specifications and mechanical compatibility are maintained across alternative manufacturers.

Substiute Parts

ST-42ETH502

Nidec Components CorporationIn Stock: 969ST-42ETH502 Datasheet

Current PartRFQ

23BR5KLFTR

TT Electronics/BIIn Stock: 1225723BR5KLFTR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ST-42ETH502 is determined by strict equivalence across the following critical parameters:

• Resistance value: 5 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: 1.0 (exact match required)
• Resistive material: Cermet (exact match required)
• Mounting type: Surface Mount (exact match required)
• Termination style: Gull Wing (exact match required)
• Package dimensions: 5.00mm x 4.50mm (exact match required)
• Moisture sensitivity level: 1 (Unlimited) (exact match required)

The identified substitute part 23BR5KLFTR meets all electrical and mechanical specifications. The primary difference is the adjustment type: the ST-42ETH502 features side adjustment, while the 23BR5KLFTR features top adjustment. Both configurations maintain functional equivalence for applications where adjustment accessibility differs.

Parameter Comparison

Engineering Selection Recommendations

Both the ST-42ETH502 and 23BR5KLFTR are Active status components with full compliance certifications (ROHS3 and RoHS respectively). Selection between these parts depends on PCB layout and assembly process requirements:

The ST-42ETH502 with side adjustment is appropriate for designs where adjustment access is required from the board edge or side profile. The 23BR5KLFTR with top adjustment is suitable for applications where adjustment occurs from the component face during manufacturing or field calibration.

Both parts carry identical electrical specifications and package dimensions, ensuring functional interchangeability in the circuit. Moisture sensitivity level 1 (Unlimited) indicates no special storage or handling requirements for either component.

Frequently Asked Questions (FAQ)

Q: Can the 23BR5KLFTR directly replace the ST-42ETH502 in existing designs?

A: Electrical and mechanical compatibility is confirmed. The primary consideration is adjustment type: side adjustment versus top adjustment. PCB layout and assembly procedures must accommodate the different adjustment access points.

Q: Are there any compliance differences between these parts?

A: The ST-42ETH502 is ROHS3 compliant, while the 23BR5KLFTR is RoHS compliant. Both meet current regulatory requirements. REACH status is unaffected for both parts.

Q: Do these parts require special handling or storage?

A: Both components have Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity precautions are necessary. Standard component storage conditions apply.

Q: What is the significance of the 1.0 turn specification?

A: The 1.0 turn configuration indicates a single complete rotation of the adjustment mechanism. This specification is identical across both parts, ensuring consistent adjustment range and resolution.

Q: Are the package dimensions identical?

A: Yes. Both parts use a rectangular package with 0.197" x 0.177" face dimensions (5.00mm x 4.50mm), ensuring identical PCB footprint compatibility.