CT-94Z-101 Equivalent & Substitute Parts

Part Overview

The CT-94Z-101 is a 100 Ohm, 0.5W through-hole trimmer potentiometer manufactured by Vishay Beyschlag/Draloric/BC Components. This cermet-based component features 18-turn side adjustment with PC pin termination and is designed for precision applications requiring manual resistance tuning. The part is currently obsolete, necessitating identification of functionally equivalent alternatives for ongoing production and maintenance applications.

Substiute Parts

CT-94Z-101

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 1111CT-94Z-101 Datasheet

Current PartRFQ

CT-94EZ101

Nidec Components CorporationIn Stock: 1141CT-94EZ101 Datasheet

DirectRFQ

3296Z-1-101

Bourns Inc.In Stock: 9513296Z-1-101 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CT-94Z-101 is determined by strict equivalence across the following critical parameters:

• Resistance value: 100 Ohms (exact match required)
• Power rating: 0.5W minimum
• Tolerance: ±10% or better
• Temperature coefficient: ±100ppm/°C or better
• Adjustment type: Side Adjustment
• Resistive material: Cermet
• Mounting type: Through Hole
• Termination style: PC Pins

Two substitute parts meet these criteria with noted variations in turn count and physical dimensions that remain within acceptable mechanical compatibility ranges for standard PCB layouts.

Parameter Comparison

Engineering Selection Recommendations

CT-94EZ101 is the direct functional equivalent, maintaining identical electrical specifications and physical dimensions to the obsolete CT-94Z-101. This part is manufactured by Nidec Components Corporation and carries Active product status with RoHS3 compliance, making it suitable for new designs and RoHS-regulated applications.

3296Z-1-101 from Bourns Inc. provides an alternative with identical electrical performance but differs in turn count (25 turns versus 18 turns) and slightly larger physical dimensions (0.395" x 0.190" versus 0.378" x 0.189"). This part is Active and suitable for applications where the increased turn count provides finer adjustment resolution. RoHS compliance status differs from the original specification.

Selection between these substitutes depends on design requirements for adjustment resolution, physical space constraints, and regulatory compliance mandates for the end application.

Frequently Asked Questions (FAQ)

Q: Can CT-94EZ101 be used as a direct replacement for CT-94Z-101?

A: Yes. CT-94EZ101 maintains identical electrical specifications (100 Ohms, 0.5W, ±10% tolerance, ±100ppm/°C temperature coefficient, 18-turn adjustment) and physical dimensions (0.378" x 0.189" face). No circuit modifications are required.

Q: What is the primary difference between CT-94EZ101 and 3296Z-1-101?

A: Both parts share identical electrical specifications. The 3296Z-1-101 features 25 turns instead of 18 turns, providing finer adjustment granularity. Physical dimensions are slightly larger (0.395" x 0.190" versus 0.378" x 0.189"), which may affect PCB layout compatibility in space-constrained designs.

Q: Are there RoHS compliance considerations when selecting a substitute?

A: CT-94EZ101 is RoHS3 compliant, while both the original CT-94Z-101 and 3296Z-1-101 are RoHS non-compliant. Applications subject to RoHS regulations should specify CT-94EZ101.

Q: Does the difference in turn count affect circuit performance?

A: Turn count affects adjustment resolution and mechanical feel but does not alter electrical performance. The 3296Z-1-101 with 25 turns provides finer control over resistance adjustment compared to the 18-turn design.

Q: Are packaging differences significant for procurement?

A: CT-94EZ101 is supplied in Bulk packaging, while 3296Z-1-101 is supplied in Tube packaging. Packaging selection depends on inventory management and assembly process requirements.