CT9P102 Equivalent & Substitute Parts Reference

Part Overview

The CT9P102 is a 1 kOhms 0.5W through-hole trimmer potentiometer manufactured by Vishay Beyschlag/Draloric/BC Components. This cermet-based component features 18 turns of adjustment with side-access design and PC pin termination, suitable for precision circuit tuning applications. The product is currently obsolete, making equivalent substitutes necessary for ongoing maintenance, repair, and legacy system support.

Substiute Parts

CT9P102

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 1100CT9P102 Datasheet

Current PartRFQ

CT-9EP102

Nidec Components CorporationIn Stock: 3345CT-9EP102 Datasheet

DirectRFQ

3296P-1-102

Bourns Inc.In Stock: 22863296P-1-102 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CT9P102 is determined by strict alignment with the following critical parameters:

• Resistance value: 1 kOhms (exact match required)
• Power rating: 0.5W minimum
• Tolerance: ±10% or better
• Temperature coefficient: ±100ppm/°C or better
• Adjustment type: Side adjustment (mechanical compatibility)
• Resistive material: Cermet (electrical performance match)
• Mounting type: Through hole (PCB compatibility)
• Termination style: PC pins (connection compatibility)

Two substitute parts meet these criteria with documented equivalence:

CT-9EP102 (Nidec Components Corporation) — Direct functional equivalent with active product status and improved RoHS3 compliance.

3296P-1-102 (Bourns Inc.) — Manufacturer-recommended substitute with extended turn count (25 turns) and sealed design, suitable where additional adjustment resolution is beneficial.

Parameter Comparison

Engineering Selection Recommendations

CT-9EP102 is the primary substitute for direct replacement applications. This part maintains identical electrical specifications and mechanical form factor while offering active product status and RoHS3 compliance. Selection of this substitute eliminates obsolescence risk and aligns with modern environmental standards.

3296P-1-102 serves as an alternative where extended adjustment resolution is operationally beneficial. The 25-turn design provides finer tuning granularity compared to the 18-turn original specification. This part carries manufacturer recommendation status and sealed design characteristics, though RoHS compliance differs from the primary substitute. Physical dimensions vary slightly (rectangular 0.375" x 0.190" versus 0.378" x 0.217"), requiring PCB layout verification before implementation.

Selection between these substitutes depends on compliance requirements, available inventory, and mechanical space constraints within the target application.

Frequently Asked Questions (FAQ)

Q: Can CT-9EP102 be used as a direct drop-in replacement for CT9P102?

A: Yes. CT-9EP102 maintains identical electrical parameters (1 kOhms, 0.5W, ±10% tolerance, ±100ppm/°C) and mechanical specifications (18-turn side adjustment, PC pin termination, through-hole mounting). Physical dimensions are equivalent within manufacturing tolerance.

Q: What is the difference between the 18-turn and 25-turn versions?

A: Turn count affects adjustment resolution. The 25-turn 3296P-1-102 provides finer tuning increments per full rotation compared to the 18-turn CT-9EP102. Both maintain identical electrical performance and power rating. Selection depends on application tuning precision requirements.

Q: Are there RoHS compliance differences between substitutes?

A: Yes. CT-9EP102 is RoHS3 compliant. 3296P-1-102 is RoHS non-compliant. The original CT9P102 is also RoHS non-compliant. Applications requiring RoHS certification should specify CT-9EP102.

Q: Do physical dimensions differ between substitutes?

A: Yes. CT-9EP102 maintains the original rectangular form factor (0.378" x 0.217" face). 3296P-1-102 uses a different rectangular profile (0.375" x 0.190" face). PCB layout and mechanical clearance must be verified before selecting 3296P-1-102 in space-constrained designs.

Q: What is the packaging difference between these parts?

A: CT9P102 and CT-9EP102 are available in bulk packaging. 3296P-1-102 is supplied in tube packaging. Packaging selection affects procurement quantity and handling procedures but does not impact electrical or mechanical performance.

Q: Can these parts be used interchangeably in all applications?

A: Electrical interchangeability is confirmed for all three parts within the specified parameters. Mechanical interchangeability requires verification of PCB layout, mounting hole spacing, and available adjustment clearance. The 25-turn variant may require operational procedure adjustment due to finer resolution.