CT-94W-205 Equivalent & Substitute Parts

Part Overview

The CT-94W-205 is a 2 MOhm, 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 equivalent and substitute components essential for ongoing production support, maintenance, and design continuity. Substitute parts must maintain electrical performance and mechanical compatibility while meeting current availability and compliance requirements.

Substiute Parts

CT-94W-205

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 1091CT-94W-205 Datasheet

Current PartRFQ

CT-94EW205

Nidec Components CorporationIn Stock: 1165CT-94EW205 Datasheet

DirectRFQ

3296W-1-205

Bourns Inc.In Stock: 82983296W-1-205 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CT-94W-205 is determined by strict equivalence across the following critical parameters:

• Resistance value: 2 MOhms (exact match required)
• Power rating: 0.5W / 1/2W (exact match required)
• Tolerance: ±10% (exact match required)
• Temperature coefficient: ±100ppm/°C (exact match required)
• Adjustment type: Top Adjustment (exact match required)
• Resistive material: Cermet (exact match required)
• Mounting type: Through Hole (exact match required)
• Termination style: PC Pins (exact match required)
• Face dimensions: Rectangular format within tolerance (9.60mm x 4.80mm nominal)

The CT-94EW205 qualifies as a direct equivalent substitute. The 3296W-1-205 qualifies as a manufacturer-recommended substitute with a noted variation in turn count (25 turns versus 18 turns) and minor dimensional tolerance differences.

Parameter Comparison

Engineering Selection Recommendations

CT-94EW205 (Direct Equivalent Substitute): This part is the preferred substitute for new designs and ongoing production. It maintains identical electrical specifications and mechanical dimensions to the CT-94W-205 while offering active product status and RoHS3 compliance. The CT-94EW205 is manufactured by Nidec Components Corporation and is available in bulk packaging with equivalent inventory levels.

3296W-1-205 (Manufacturer-Recommended Substitute): This Bourns Trimpot® 3296 sealed trimmer potentiometer is designated as a manufacturer-recommended alternative. It matches all critical electrical parameters and maintains through-hole PC pin termination. The primary variation is the 25-turn design versus the 18-turn specification of the original part, resulting in finer adjustment resolution. Face dimensions are within tolerance (9.53mm x 4.83mm versus 9.60mm x 4.80mm). This part offers significantly higher inventory availability (8240 units) and is suitable for applications where turn-count variation is acceptable. The 3296W-1-205 is RoHS non-compliant and REACH-affected, consistent with the original part's compliance profile.

Frequently Asked Questions (FAQ)

Q: Can the CT-94EW205 be used as a direct replacement for the CT-94W-205 without circuit modification?

A: Yes. The CT-94EW205 maintains identical electrical specifications (2 MOhm, 0.5W, ±10% tolerance, ±100ppm/°C temperature coefficient) and mechanical dimensions (0.378" x 0.189" face). No circuit modification is required.

Q: What is the significance of the 25-turn versus 18-turn difference between the CT-94W-205 and 3296W-1-205?

A: The 3296W-1-205 provides 25 turns of adjustment range compared to 18 turns in the original part. This results in finer adjustment resolution per turn. Applications requiring coarse adjustment may experience improved tuning precision with the 25-turn design. Verify that the application's adjustment mechanism and user interface accommodate the increased turn count.

Q: Are there packaging considerations when selecting between these substitutes?

A: The CT-94EW205 is supplied in bulk packaging, while the 3296W-1-205 is supplied in tube packaging. Bulk packaging is suitable for high-volume assembly operations, while tube packaging provides organized component handling for lower-volume or manual assembly processes. Select based on production workflow requirements.

Q: Does the RoHS3 compliance of the CT-94EW205 affect compatibility with existing designs?

A: RoHS3 compliance of the CT-94EW205 indicates restriction of hazardous substances in accordance with current environmental regulations. This does not affect electrical or mechanical compatibility. The part is suitable for designs requiring RoHS compliance and for legacy designs originally using RoHS non-compliant components.

Q: What are the inventory implications of selecting the 3296W-1-205?

A: The 3296W-1-205 offers substantially higher inventory availability (8240 units) compared to the CT-94EW205 (1081 units) and the obsolete CT-94W-205 (1080 units). For high-volume production or long-term supply assurance, the 3296W-1-205 provides superior availability, provided the 25-turn specification is acceptable for the application.