ST3TA104 Equivalent & Substitute Parts

Part Overview

The ST3TA104 is a 100 kOhms surface mount trimmer potentiometer manufactured by Vishay Beyschlag/Draloric/BC Components. This cermet-based trimmer features 0.125W power rating, ±20% tolerance, and J Lead termination with top adjustment capability. The product is classified as obsolete, making identification of active equivalent parts essential for ongoing production and maintenance applications requiring this specific resistance value and form factor.

Substiute Parts

ST3TA104

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 742ST3TA104 Datasheet

Current PartRFQ

3313J-1-104E

Bourns Inc.In Stock: 302013313J-1-104E Datasheet

MFR RecommendedRFQ

ST-32ETA104

Nidec Components CorporationIn Stock: 30016ST-32ETA104 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ST3TA104 is determined by strict equivalence across the following parameters: resistance value (100 kOhms), power rating (0.125W), tolerance (±20%), temperature coefficient (±100ppm/°C), number of turns (1), adjustment type (top adjustment), resistive material (cermet), mounting type (surface mount), and termination style (J Lead). Physical dimensions may vary within acceptable mechanical tolerances for PCB mounting. All identified substitutes maintain these core electrical and functional specifications, ensuring direct functional replacement in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both 3313J-1-104E (Bourns Inc.) and ST-32ETA104 (Nidec Components Corporation) are active product alternatives to the obsolete ST3TA104. Selection between these substitutes should be based on supply chain availability and compliance requirements. The 3313J-1-104E maintains rectangular face dimensions (0.138" x 0.126" / 4.60mm x 3.20mm) identical to the original part. The ST-32ETA104 features a square face configuration (0.134" x 0.134" / 3.40mm x 3.40mm) with equivalent electrical performance. Both substitutes are ROHS3 compliant, addressing regulatory requirements that the original part does not meet. Inventory availability for both alternatives is substantial, supporting production continuity.

Frequently Asked Questions (FAQ)

Q: Can the 3313J-1-104E directly replace the ST3TA104 without PCB modification?

A: Yes. The 3313J-1-104E maintains identical electrical specifications and rectangular face dimensions (0.138" x 0.126") matching the original part, enabling direct substitution without PCB layout changes.

Q: What is the primary difference between the two substitute options?

A: The 3313J-1-104E (Bourns) retains the rectangular face geometry of the original ST3TA104, while the ST-32ETA104 (Nidec) features a square face (0.134" x 0.134"). Both deliver identical electrical performance. PCB footprint compatibility determines which substitute is appropriate for your application.

Q: Are both substitutes RoHS compliant?

A: Yes. Both the 3313J-1-104E and ST-32ETA104 are ROHS3 compliant, whereas the original ST3TA104 is non-compliant. This compliance upgrade is beneficial for applications subject to RoHS regulations.

Q: Do the substitutes maintain the same moisture sensitivity rating?

A: Yes. All three parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity concerns for storage and handling.

Q: What packaging formats are available for the substitute parts?

A: Both substitutes are supplied in Tape & Reel (TR) packaging, standard for surface mount production environments.