CT-94Y-102 Equivalent & Substitute Parts

Part Overview

The CT-94Y-102 is a 1 kOhm, 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 equivalent substitutes necessary for ongoing production and maintenance applications. The part operates within a temperature coefficient of ±100ppm/°C and maintains ±10% tolerance across its operating range.

Substiute Parts

CT-94Y-102

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 877CT-94Y-102 Datasheet

Current PartRFQ

CT-94EY102

Nidec Components CorporationIn Stock: 7599CT-94EY102 Datasheet

DirectRFQ

3296Y-1-102

Bourns Inc.In Stock: 16453296Y-1-102 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CT-94Y-102 is determined by strict equivalence across the following critical parameters:

• 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)
• Face dimensions: Rectangular configuration within tolerance

The number of turns and face dimensions may vary within acceptable mechanical and electrical limits, provided all other parameters remain equivalent. Substitute parts must maintain functional compatibility in the original application circuit.

Parameter Comparison

Engineering Selection Recommendations

CT-94EY102 is the primary direct substitute for CT-94Y-102. Both parts share identical electrical specifications, mechanical dimensions, and functional characteristics. CT-94EY102 is manufactured by Nidec Components Corporation and maintains active product status with RoHS3 compliance, providing superior long-term availability and regulatory alignment compared to the obsolete original part.

3296Y-1-102 is a secondary substitute manufactured by Bourns Inc. under the Trimpot® 3296 - Sealed series. This part maintains all critical electrical parameters but differs in two aspects: the number of turns increases from 18 to 25, and face dimensions vary slightly (0.375" x 0.190" versus 0.378" x 0.189"). These dimensional differences remain within acceptable mechanical tolerances for standard through-hole PCB applications. The 3296Y-1-102 is active and available but does not carry RoHS3 compliance.

Selection between CT-94EY102 and 3296Y-1-102 depends on application-specific requirements regarding turn count precision and regulatory compliance. For applications requiring exact 18-turn specification and RoHS3 compliance, CT-94EY102 is the appropriate choice. For applications where 25-turn adjustment range is acceptable and RoHS compliance is not mandated, 3296Y-1-102 provides an alternative with established market availability.

Frequently Asked Questions (FAQ)

Q: Can CT-94EY102 be used as a direct replacement for CT-94Y-102 without circuit modification?

A: Yes. CT-94EY102 is electrically and mechanically equivalent to CT-94Y-102 across all specified parameters. No circuit modification is required. Both parts are identical in resistance value, power rating, tolerance, temperature coefficient, adjustment type, resistive material, mounting configuration, and termination style.

Q: What is the significance of the 18-turn versus 25-turn difference between CT-94Y-102 and 3296Y-1-102?

A: The number of turns affects adjustment resolution and mechanical range. An 18-turn potentiometer requires fewer rotations to traverse the full resistance range compared to a 25-turn design. If the original circuit design depends on specific turn-count characteristics for adjustment sensitivity or mechanical fit, the 25-turn substitute may not be suitable without application verification.

Q: Are there packaging differences between the substitute parts?

A: Yes. CT-94Y-102 and CT-94EY102 are supplied in standard packaging formats. 3296Y-1-102 is supplied in tube packaging. Packaging differences do not affect electrical or mechanical compatibility but may impact procurement, handling, and inventory management procedures.

Q: Does RoHS compliance affect electrical performance?

A: No. RoHS compliance relates to material composition and environmental regulations, not electrical performance. Both RoHS-compliant and non-compliant parts deliver identical electrical specifications. RoHS compliance becomes relevant only when regulatory requirements mandate lead-free or restricted substance compliance in the end application.

Q: Are the face dimension differences between CT-94Y-102 and 3296Y-1-102 significant for PCB layout?

A: The dimensional differences are minimal (0.378" versus 0.375" width; 0.189" versus 0.190" height). These variations fall within standard PCB design tolerances and do not typically require layout modification for through-hole applications. However, applications with tight mechanical constraints should verify fit before production implementation.

Q: What is the moisture sensitivity level, and does it affect storage or handling?

A: Moisture Sensitivity Level 1 (Unlimited) indicates the part has no moisture sensitivity restrictions. Standard storage and handling procedures are sufficient. No special desiccant packaging or baking procedures are required prior to soldering.