ST-4ETH102 Equivalent & Substitute Parts

Part Overview

The ST-4ETH102 is a 1 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 active in production with full RoHS3 compliance and unlimited moisture sensitivity rating. 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-4ETH102

Nidec Components CorporationIn Stock: 1049ST-4ETH102 Datasheet

Current PartRFQ

23BR1KLFTR

TT Electronics/BIIn Stock: 224223BR1KLFTR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ST-4ETH102 is determined by strict alignment of the following parameters:

• Resistance value: 1 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: 5.00mm x 4.50mm face
• RoHS compliance status
• MSL rating: 1 (Unlimited)

The 23BR1KLFTR qualifies as an equivalent substitute based on matching all electrical and mechanical parameters. The primary distinction is the adjustment method: the ST-4ETH102 features side adjustment, while the 23BR1KLFTR provides top adjustment. Both designs accommodate the same functional requirements within the specified parameter envelope.

Parameter Comparison

Engineering Selection Recommendations

Both the ST-4ETH102 and 23BR1KLFTR maintain active product status with full regulatory compliance. The ST-4ETH102 carries RoHS3 certification, while the 23BR1KLFTR holds RoHS compliance. Both components are REACH unaffected and carry unlimited MSL ratings, indicating suitability for standard storage and handling conditions.

Selection between these parts depends on PCB layout and adjustment accessibility requirements. The side adjustment design of the ST-4ETH102 accommodates applications where lateral access is preferred, while the top adjustment of the 23BR1KLFTR suits designs requiring vertical adjustment access. Electrical performance and thermal characteristics remain identical across both options.

Frequently Asked Questions (FAQ)

Q: Can the 23BR1KLFTR directly replace the ST-4ETH102 in existing designs?

A: Electrical and mechanical compatibility is confirmed. The primary consideration is adjustment method accessibility. If the PCB layout accommodates top adjustment instead of side adjustment, direct substitution is viable. Physical footprint and termination style are identical.

Q: Are there compliance differences between these parts?

A: Both parts meet RoHS requirements and carry REACH unaffected status. The ST-4ETH102 specifically carries RoHS3 certification, while the 23BR1KLFTR holds RoHS compliance. Both maintain unlimited MSL ratings.

Q: What determines substitution eligibility for this component category?

A: Resistance value, power rating, tolerance, temperature coefficient, number of turns, resistive material composition, mounting type, termination style, and physical dimensions must match exactly. Adjustment method differences do not preclude substitution when layout permits.

Q: Are packaging differences significant for component selection?

A: The ST-4ETH102 is supplied in Tape & Reel format, while the 23BR1KLFTR is available in Cut Tape and Digi-Reel packaging. Packaging selection depends on assembly process requirements and order quantities, not electrical or mechanical compatibility.

Q: What is the temperature operating range for these components?

A: Temperature coefficient is specified as ±100ppm/°C for both parts. Specific operating temperature ranges are not provided in the component specifications.