Equivalent & Substitute Parts for CT-94W-102

Part Overview

The CT-94W-102 is a 1 kOhms 0.5W through-hole trimmer potentiometer with cermet resistive material, 18-turn top adjustment, and PC pin termination manufactured by Vishay Beyschlag/Draloric/BC Components. This part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. The part operates within a ±10% tolerance and ±100ppm/°C temperature coefficient specification, with rectangular dimensions of 9.60mm x 4.80mm.

Substiute Parts

CT-94W-102

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 1001CT-94W-102 Datasheet

Current PartRFQ

CT-94EW102

Nidec Components CorporationIn Stock: 6688CT-94EW102 Datasheet

DirectRFQ

3296W-1-102

Bourns Inc.In Stock: 43463296W-1-102 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CT-94W-102 is determined by strict equivalence across the following critical parameters: resistance value (1 kOhms), power rating (0.5W), tolerance (±10%), temperature coefficient (±100ppm/°C), adjustment type (top adjustment), resistive material (cermet), mounting type (through hole), termination style (PC pins), and face dimensions (9.60mm x 4.80mm nominal).

The number of turns parameter is not a limiting factor for substitution, as this specification affects adjustment resolution rather than functional electrical performance. Dimensional tolerance and packaging format do not restrict substitution provided the core mechanical interface remains compatible with through-hole PC pin mounting.

Two substitute parts meet these criteria:

• CT-94EW102 (Nidec Components Corporation): Direct equivalent with identical electrical and mechanical specifications. Active product status with RoHS3 compliance.
• 3296W-1-102 (Bourns Inc.): Functionally equivalent with 25-turn adjustment instead of 18-turn. Meets all electrical parameters and mechanical interface requirements. Active product status with different RoHS compliance profile.

Parameter Comparison

Engineering Selection Recommendations

CT-94EW102 is the preferred direct substitute for the CT-94W-102. This part maintains identical electrical specifications, mechanical dimensions, and adjustment characteristics while offering active product status and RoHS3 compliance. The transition from Vishay to Nidec Components Corporation represents a straightforward replacement with no design modifications required.

3296W-1-102 serves as a functional alternative when CT-94EW102 availability is constrained. The 25-turn adjustment provides finer resolution compared to the 18-turn original specification, which may improve tuning precision in applications requiring close tolerance adjustment. Dimensional variation (9.53mm x 4.83mm versus 9.60mm x 4.80mm) falls within typical PCB layout tolerance. The Bourns Trimpot® 3296 series maintains all critical electrical parameters. Selection of this part requires verification of REACH compliance requirements for the end application, as this part is REACH-affected.

Frequently Asked Questions (FAQ)

Q: Can CT-94EW102 be used as a direct drop-in replacement for CT-94W-102?

A: Yes. CT-94EW102 maintains identical resistance, power rating, tolerance, temperature coefficient, adjustment type, resistive material, mounting type, termination style, and face dimensions. No circuit modifications or PCB layout changes are required.

Q: What is the significance of the 25-turn specification on 3296W-1-102 compared to the 18-turn original?

A: The number of turns affects adjustment resolution. The 3296W-1-102 provides approximately 39% finer adjustment resolution per turn. This does not alter electrical performance but may improve tuning capability in applications requiring precise resistance setting.

Q: Are there dimensional compatibility concerns with 3296W-1-102?

A: The 3296W-1-102 face dimensions (9.53mm x 4.83mm) differ slightly from the CT-94W-102 (9.60mm x 4.80mm). These variations are within standard PCB layout tolerances for through-hole components. Mechanical fit on existing PCBs designed for CT-94W-102 remains compatible.

Q: What compliance differences exist between the substitute parts?

A: CT-94EW102 is RoHS3 compliant and REACH unaffected, making it suitable for applications with strict environmental compliance requirements. The 3296W-1-102 is RoHS non-compliant but REACH-affected, requiring compliance verification for specific end-use applications.

Q: Does packaging format affect substitution eligibility?

A: Packaging format (bulk versus tube) does not affect electrical or mechanical compatibility. Selection between CT-94EW102 (bulk) and 3296W-1-102 (tube) depends on procurement quantity requirements and inventory management practices.