ST-42ETA502 Equivalent & Substitute Parts

Part Overview

The ST-42ETA502 is a 5 kOhm, 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 with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute components are identified when equivalent electrical specifications, mechanical dimensions, and environmental certifications align with the original design requirements.

Substiute Parts

ST-42ETA502

Nidec Components CorporationIn Stock: 1186ST-42ETA502 Datasheet

Current PartRFQ

23AR5KLFTR

TT Electronics/BIIn Stock: 152523AR5KLFTR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ST-42ETA502 is determined by strict equivalence across the following critical parameters: resistance value (5 kOhms), power rating (0.25W), tolerance (±20%), temperature coefficient (±100ppm/°C), number of turns (1), adjustment type (top adjustment), resistive material (cermet), mounting type (surface mount), termination style (J lead), and package dimensions (5.00mm x 4.50mm). The identified substitute, 23AR5KLFTR from TT Electronics/BI, meets all these specifications. Both components share identical electrical performance characteristics and mechanical compatibility, enabling direct substitution in circuit applications where the ST-42ETA502 is specified.

Parameter Comparison

Engineering Selection Recommendations

Both the ST-42ETA502 and 23AR5KLFTR maintain Active product status with full compliance to environmental and regulatory standards. The ST-42ETA502 carries RoHS3 certification, while the 23AR5KLFTR holds RoHS compliance. Both components are REACH unaffected and classified under ECCN EAR99. Selection between these parts should be based on supply chain availability, lead time requirements, and inventory positioning. The 23AR5KLFTR currently maintains higher inventory levels (1424 pcs) compared to the ST-42ETA502 (1088 pcs), which may influence procurement decisions for high-volume applications.

Frequently Asked Questions (FAQ)

Q: Can the 23AR5KLFTR directly replace the ST-42ETA502 in existing designs? A: Yes. Both components share identical electrical specifications (5 kOhms, 0.25W, ±20% tolerance, ±100ppm/°C), mechanical dimensions (5.00mm x 4.50mm), and functional characteristics (cermet material, J lead termination, top adjustment, single turn). Direct substitution is supported without circuit modification.

Q: Are there differences in RoHS compliance between these parts? A: The ST-42ETA502 is RoHS3 compliant, while the 23AR5KLFTR is RoHS compliant. Both meet current environmental regulations. Applications requiring specific RoHS3 certification should specify the ST-42ETA502.

Q: What is the significance of the J lead termination style? A: J lead termination provides a specific solder connection geometry for surface mount assembly. Both the ST-42ETA502 and 23AR5KLFTR use identical J lead termination, ensuring compatibility with existing PCB footprints and reflow soldering processes.

Q: Do these components have different moisture sensitivity requirements? A: No. Both components carry MSL rating 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: What determines the substitution eligibility between these trimmer potentiometers? A: Substitution is determined by matching resistance value, power rating, tolerance, temperature coefficient, number of turns, adjustment type, resistive material composition, mounting method, termination style, and physical package dimensions. The ST-42ETA502 and 23AR5KLFTR meet all these criteria.