CT9W102 Trimmer Potentiometer - Equivalent & Substitute Parts

Part Overview

The CT9W102 is a 1 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 applications requiring precision variable resistance in compact rectangular form factors.

The CT9W102 is classified as obsolete. Locating equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production, repair, and field service applications.

Substiute Parts

CT9W102

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 1048CT9W102 Datasheet

Current PartRFQ

CT-9EW102

Nidec Components CorporationIn Stock: 1817CT-9EW102 Datasheet

DirectRFQ

3296W-1-102

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CT9W102 are qualified based on the following critical parameters that determine functional and mechanical compatibility:

• Resistance value: 1 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 number of turns and physical dimensions may vary within acceptable limits for PCB layout accommodation, provided all other electrical and mechanical parameters remain constant.

Parameter Comparison

Engineering Selection Recommendations

CT-9EW102 (Direct Substitute - Nidec Components Corporation)

This part provides the closest functional and dimensional equivalence to the CT9W102. All critical electrical parameters match exactly: 1 kOhms resistance, 0.5W power rating, ±10% tolerance, ±100ppm/°C temperature coefficient, 18 turns, and identical physical dimensions. The CT-9EW102 is currently in active production status with 1766 units in stock. This part achieves RoHS3 compliance, addressing environmental regulatory requirements where applicable.

3296W-1-102 (MFR Recommended - Bourns Inc.)

This Trimpot® 3296 sealed series component matches all critical electrical specifications but differs in turn count (25 turns versus 18) and physical dimensions (0.375" x 0.190" versus 0.378" x 0.217"). The increased turn count provides finer adjustment resolution. Physical dimension variance requires PCB layout verification before implementation. The 3296W-1-102 is in active production with 4258 units available. This part maintains RoHS non-compliant status consistent with the original CT9W102.

Frequently Asked Questions (FAQ)

Q: Can the CT-9EW102 be used as a direct replacement for CT9W102 without PCB modification?

A: Yes. The CT-9EW102 maintains identical electrical specifications and physical dimensions (0.378" x 0.217" face), allowing direct PCB substitution without layout changes.

Q: What is the primary difference between CT-9EW102 and 3296W-1-102?

A: The CT-9EW102 matches the original CT9W102 in both turn count (18) and dimensions. The 3296W-1-102 features 25 turns and slightly smaller dimensions (0.375" x 0.190"), requiring PCB layout verification and offering finer adjustment granularity.

Q: Does the CT-9EW102 meet RoHS compliance requirements?

A: Yes. The CT-9EW102 is RoHS3 compliant, whereas the original CT9W102 and the 3296W-1-102 are RoHS non-compliant.

Q: Are all three parts functionally equivalent for 1 kOhm, 0.5W applications?

A: All three parts deliver identical electrical performance: 1 kOhms resistance, 0.5W power rating, ±10% tolerance, and ±100ppm/°C temperature coefficient. Physical dimensions and turn count differ between the 3296W-1-102 and the other two parts.

Q: What packaging formats are available for these substitutes?

A: CT-9EW102 is supplied in Bulk packaging. The 3296W-1-102 is supplied in Tube packaging. Original CT9W102 packaging format is not specified in available data.

Q: Can the 3296W-1-102 be used in applications requiring exactly 18 turns?

A: No. The 3296W-1-102 provides 25 turns. Applications with specific turn-count requirements must use the CT-9EW102 or original CT9W102.