CT9W202 Trimmer Potentiometer - Equivalent & Substitute Parts

Part Overview

The CT9W202 is a 2 kOhm, 0.5W through-hole trimmer potentiometer manufactured by Vishay Beyschlag/Draloric/BC Components. This cermet-based adjustment component features 18 turns with top adjustment and PC pin termination, designed for precision tuning applications in electronic circuits.

The CT9W202 is classified as obsolete. Locating equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production, repair, and maintenance applications.

Substiute Parts

CT9W202

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 1029CT9W202 Datasheet

Current PartRFQ

CT-9EW202

Nidec Components CorporationIn Stock: 1457CT-9EW202 Datasheet

DirectRFQ

3296W-1-202

Bourns Inc.In Stock: 51993296W-1-202 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CT9W202 are qualified based on the following critical parameters that determine functional and mechanical compatibility:

• Resistance value: 2 kOhms (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)

The CT9W202 has two identified substitutes: CT-9EW202 (direct equivalent) and 3296W-1-202 (manufacturer-recommended alternative). Both parts satisfy the core electrical and mechanical requirements, though they differ in turn count and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

CT-9EW202 (Direct Equivalent - Preferred)

The CT-9EW202 is the optimal substitute for the obsolete CT9W202. This part maintains identical electrical specifications, mechanical dimensions, and turn count (18 turns). The CT-9EW202 is manufactured by Nidec Components Corporation and carries Active product status with RoHS3 compliance, ensuring long-term availability and regulatory alignment for new designs.

3296W-1-202 (Manufacturer-Recommended Alternative)

The 3296W-1-202 from Bourns Inc. (Trimpot® 3296 series) is a manufacturer-recommended alternative that meets all core electrical requirements. This part features 25 turns instead of 18, providing finer adjustment resolution. The face dimensions differ slightly (0.375" x 0.190" versus 0.378" x 0.217"), which may require PCB layout verification. The 3296W-1-202 is Active and widely available. Note that this part is RoHS non-compliant and REACH-affected, which may impact regulatory compliance for certain applications.

Frequently Asked Questions (FAQ)

Q: Can CT-9EW202 be used as a direct drop-in replacement for CT9W202?

A: Yes. The CT-9EW202 maintains identical electrical specifications (2 kOhms, 0.5W, ±10% tolerance, ±100ppm/°C), identical turn count (18), and identical mechanical dimensions (0.378" x 0.217" face). No circuit modifications or PCB layout changes are required.

Q: What is the difference between the 18-turn CT-9EW202 and the 25-turn 3296W-1-202?

A: The 3296W-1-202 provides 25 turns versus 18 turns, resulting in finer adjustment resolution per turn. This may be beneficial for applications requiring precise tuning but could affect adjustment sensitivity. The 3296W-1-202 also has slightly different face dimensions (0.375" x 0.190" versus 0.378" x 0.217"), requiring PCB layout verification.

Q: Are there packaging differences between these substitutes?

A: Yes. The CT9W202 is supplied in bulk packaging, CT-9EW202 is supplied in bulk packaging, and 3296W-1-202 is supplied in tube packaging. Packaging format may affect procurement, handling, and storage requirements but does not impact electrical or mechanical performance.

Q: Which substitute should be selected for RoHS-compliant designs?

A: The CT-9EW202 is RoHS3 compliant and is the appropriate choice for designs requiring RoHS compliance. The 3296W-1-202 is RoHS non-compliant and should not be used in applications with RoHS requirements.

Q: Are all three parts suitable for the same circuit applications?

A: All three parts are electrically equivalent for applications requiring 2 kOhm, 0.5W trimmer potentiometers with cermet construction and top adjustment. The CT-9EW202 is the preferred substitute due to identical specifications and active product status. The 3296W-1-202 is suitable where the increased turn count and finer adjustment resolution provide design benefits, provided PCB layout accommodates the slightly different dimensions.