ST32TA103 Equivalent & Substitute Parts

Part Overview

The ST32TA103 is a 10 kOhms surface mount trimmer potentiometer manufactured by Vishay Beyschlag/Draloric/BC Components. This cermet-based trimmer features 0.125W power rating, ±20% tolerance, and top adjustment capability with J lead termination. The part is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements.

Substiute Parts

ST32TA103

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 683ST32TA103 Datasheet

Current PartRFQ

22AR10KLFTR

TT Electronics/BIIn Stock: 2074922AR10KLFTR Datasheet

MFR RecommendedRFQ

ST-32ETA103

Nidec Components CorporationIn Stock: 18772ST-32ETA103 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ST32TA103 are qualified based on matching the following critical parameters: 10 kOhms resistance value, 0.125W power rating, ±20% tolerance, ±100ppm/°C temperature coefficient, 1-turn adjustment, top adjustment type, cermet resistive material, surface mount mounting, J lead termination, and MSL 1 classification. Dimensional variations within the square or rectangular form factor are acceptable provided all electrical and functional specifications remain identical. The identified substitutes maintain full electrical and mechanical compatibility with the original design.

Parameter Comparison

Engineering Selection Recommendations

Both 22AR10KLFTR and ST-32ETA103 are active production alternatives to the obsolete ST32TA103. The 22AR10KLFTR is manufactured by TT Electronics/BI and carries RoHS compliance certification. The ST-32ETA103 is manufactured by Nidec Components Corporation and carries ROHS3 compliance certification. Both substitutes maintain identical electrical specifications and functional characteristics. Selection between these alternatives should be based on supply chain availability, packaging requirements (Tape & Reel for both), and compliance certifications applicable to the end application. The ST-32ETA103 maintains the same series designation and square form factor as the original part, while the 22AR10KLFTR uses a rectangular form factor with marginally different dimensions (0.138" x 0.126" versus 0.134" x 0.134").

Frequently Asked Questions (FAQ)

Q: Can the 22AR10KLFTR and ST-32ETA103 be used interchangeably with the ST32TA103?

A: Yes. Both substitutes match all critical electrical parameters: 10 kOhms resistance, 0.125W power rating, ±20% tolerance, ±100ppm/°C temperature coefficient, 1-turn top adjustment, cermet material, surface mount J lead termination, and MSL 1 rating. Dimensional differences are minor and do not affect electrical performance or circuit board layout compatibility for standard applications.

Q: What is the primary reason for substituting the ST32TA103?

A: The ST32TA103 is classified as obsolete. The 22AR10KLFTR and ST-32ETA103 are active production parts with established supply chains and current manufacturing support.

Q: Are there compliance differences between the substitutes?

A: The ST32TA103 is RoHS non-compliant. The 22AR10KLFTR is RoHS compliant, and the ST-32ETA103 is ROHS3 compliant. Applications requiring RoHS certification must use either substitute.

Q: Do the dimensional differences between 22AR10KLFTR and ST-32ETA103 affect PCB layout?

A: The 22AR10KLFTR has a rectangular footprint (0.138" x 0.126"), while the ST-32ETA103 maintains the original square footprint (0.134" x 0.134"). PCB designs must accommodate the selected substitute's form factor. Both use identical J lead termination and MSL 1 packaging.

Q: What packaging is available for these substitutes?

A: Both 22AR10KLFTR and ST-32ETA103 are supplied in Tape & Reel (TR) packaging format.