ST4TA502 Equivalent & Substitute Parts

Part Overview

The ST4TA502 is a 5 kOhms, 0.25W surface mount trimmer potentiometer with J Lead termination, cermet resistive material, and 1.0 turn top adjustment. Manufactured by Vishay Beyschlag/Draloric/BC Components, this component is classified as obsolete. Due to its obsolete status and limited availability from the original manufacturer, equivalent substitute parts from active product lines are necessary for new designs and ongoing production requirements.

Substiute Parts

ST4TA502

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 991ST4TA502 Datasheet

Current PartRFQ

23AR5KLFTR

TT Electronics/BIIn Stock: 152523AR5KLFTR Datasheet

MFR RecommendedRFQ

ST-42ETA502

Nidec Components CorporationIn Stock: 1186ST-42ETA502 Datasheet

MFR RecommendedRFQ

ST-4ETA502

Nidec Components CorporationIn Stock: 32078ST-4ETA502 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ST4TA502 are qualified based on strict electrical and mechanical parameter matching:

Qualifying Parameters for Substitution:

• 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 (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: J Lead (exact match required)
• Physical dimensions: Rectangular - 0.197" x 0.177" Face (5.00mm x 4.50mm) (exact match required)
• Moisture sensitivity level: 1 (Unlimited) (exact match required)

All substitute parts listed below meet these criteria without exception.

Parameter Comparison

Engineering Selection Recommendations

ST-4ETA502 (Nidec Components Corporation): This part is the primary substitute for the ST4TA502. It maintains the same series designation (ST4) and offers the highest inventory availability (32,030 pcs). The part is active in production and carries ROHS3 compliance certification.

ST-42ETA502 (Nidec Components Corporation): This part is an active alternative from Nidec with ROHS3 compliance. Inventory availability is 1,088 pcs. The ST42 series designation indicates a variant within the Nidec product line.

23AR5KLFTR (TT Electronics/BI): This part is an active alternative from TT Electronics/BI with RoHS compliance certification. Inventory availability is 1,424 pcs. The 23 series designation indicates a different manufacturer product line.

All three substitute parts meet the complete electrical and mechanical parameter requirements of the ST4TA502. Selection among these options should be based on supply chain availability, lead time requirements, and compliance certifications applicable to the end application.

Frequently Asked Questions (FAQ)

Q: Can ST-4ETA502, ST-42ETA502, and 23AR5KLFTR be used interchangeably with ST4TA502?

A: Yes. All three parts match the ST4TA502 across all specified electrical parameters (5 kOhms resistance, 0.25W power rating, ±20% tolerance, ±100ppm/°C temperature coefficient, 1 turn), mechanical parameters (J Lead termination, cermet material, top adjustment, surface mount), and physical dimensions (0.197" x 0.177" face). They are direct functional equivalents.

Q: What is the primary reason to substitute the ST4TA502?

A: The ST4TA502 is classified as obsolete. The substitute parts are all active products from current manufacturer product lines, ensuring long-term availability and supply chain continuity.

Q: Are there compliance differences between the main part and substitutes?

A: Yes. The ST4TA502 is RoHS non-compliant. All three substitute parts carry RoHS compliance certifications (ROHS3 or RoHS), making them suitable for applications requiring RoHS compliance.

Q: Do the substitute parts have different packaging?

A: The ST4TA502 packaging is not specified in the provided data. All three substitute parts are supplied in Tape & Reel (TR) packaging, which is standard for surface mount components.

Q: Are there inventory differences among the substitute parts?

A: Yes. ST-4ETA502 has the highest inventory (32,030 pcs), followed by 23AR5KLFTR (1,424 pcs) and ST-42ETA502 (1,088 pcs). Inventory levels should be considered for supply chain planning.

Q: Do all parts share the same REACH and ECCN classifications?

A: Yes. All parts, including the main part ST4TA502, are classified as REACH Unaffected and ECCN EAR99.