CT-94W-100 Equivalent & Substitute Parts

Part Overview

The CT-94W-100 is a through-hole trimmer potentiometer manufactured by Vishay Beyschlag/Draloric/BC Components. This 10 Ohm, 0.5W cermet trimmer features PC pin termination with top adjustment and an 18-turn configuration. The product is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing maintenance, repair, and legacy system support where direct replacement is required.

Substiute Parts

CT-94W-100

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 1133CT-94W-100 Datasheet

Current PartRFQ

3296W-1-100

Bourns Inc.In Stock: 44443296W-1-100 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The 3296W-1-100 manufactured by Bourns Inc. qualifies as a functional substitute for the CT-94W-100 based on the following critical parameters:

Matching Parameters:

• Resistance value: 10 Ohms
• Power rating: 0.5W (1/2W)
• Tolerance: ±10%
• Adjustment type: Top Adjustment
• Resistive material: Cermet
• Mounting type: Through Hole
• Termination style: PC Pins
• Physical form factor: Rectangular configuration with compatible dimensions (0.375" x 0.190" vs. 0.378" x 0.189")

Differing Parameters:

• Number of turns: 25 (vs. 18 on original)
• Temperature coefficient: ±100ppm/°C (vs. ±250ppm/°C on original)
• Product status: Active (vs. Obsolete)
• Packaging: Tube (vs. unspecified on original)

The substitute maintains electrical and mechanical compatibility for standard trimmer potentiometer applications. The increased turn count and improved temperature coefficient represent performance enhancements rather than incompatibilities.

Parameter Comparison

Engineering Selection Recommendations

The 3296W-1-100 is the designated manufacturer-recommended substitute for the obsolete CT-94W-100. Selection of this alternative is appropriate for the following reasons:

Product Status: The CT-94W-100 is obsolete with no ongoing manufacturing. The 3296W-1-100 maintains active production status, ensuring long-term availability and supply chain continuity.

Compliance Alignment: Both components share identical RoHS non-compliance status, maintaining consistency with legacy system requirements and existing compliance documentation.

Electrical Equivalence: Matching resistance, power rating, and tolerance specifications ensure direct functional replacement in circuit applications. The improved temperature coefficient of the substitute (±100ppm/°C vs. ±250ppm/°C) provides enhanced stability without introducing incompatibility.

Mechanical Compatibility: Identical mounting type, termination style, and comparable physical dimensions support direct PCB mounting without layout modifications.

Packaging Consideration: The 3296W-1-100 is supplied in tube packaging, which may differ from original stock packaging but does not affect component functionality or installation.

Frequently Asked Questions (FAQ)

Q: Can the 3296W-1-100 be used as a direct replacement for the CT-94W-100 in existing designs?

A: Yes. Both components share identical resistance, power rating, tolerance, adjustment type, resistive material, mounting type, and termination style. Physical dimensions are compatible within standard PCB assembly tolerances.

Q: What is the significance of the different turn counts (18 vs. 25)?

A: The 25-turn configuration of the 3296W-1-100 provides finer adjustment resolution compared to the 18-turn original. This represents an improvement in tuning precision and does not create incompatibility. Applications requiring coarser adjustment steps will function normally with the substitute.

Q: How does the temperature coefficient difference affect substitution?

A: The 3296W-1-100 exhibits a lower temperature coefficient (±100ppm/°C vs. ±250ppm/°C), indicating superior temperature stability. This is a performance enhancement that does not compromise compatibility with the original design.

Q: Are there packaging differences between these components?

A: The 3296W-1-100 is supplied in tube packaging. The original CT-94W-100 packaging format is not specified in available documentation. Tube packaging is standard for through-hole trimmer potentiometers and does not affect component performance or installation.

Q: What compliance considerations apply to this substitution?

A: Both components are RoHS non-compliant. If your application or region requires RoHS compliance, alternative solutions outside this substitution group must be evaluated. The REACH and ECCN classifications are identical for both parts.

Q: Is the 3296W-1-100 available in inventory?

A: Yes. The 3296W-1-100 is in active production with 4400 pieces available as new original stock, ensuring reliable procurement for replacement and repair applications.