CT-94Y-503 Equivalent & Substitute Parts

Part Overview

The CT-94Y-503 is a 50 kOhms 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. Identifying equivalent substitute parts is necessary due to the discontinued status of the original component, ensuring continued availability for maintenance, repair, and new production applications requiring identical electrical and mechanical specifications.

Substiute Parts

CT-94Y-503

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 893CT-94Y-503 Datasheet

Current PartRFQ

CT-94EY503

Nidec Components CorporationIn Stock: 4470CT-94EY503 Datasheet

DirectRFQ

3296Y-1-503

Bourns Inc.In Stock: 11763296Y-1-503 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CT-94Y-503 are identified based on strict electrical and mechanical parameter matching. The primary substitution criteria are:

• Resistance value: 50 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)

Two substitute parts meet these criteria with noted variations in number of turns and physical dimensions within acceptable tolerances for through-hole mounting applications.

Parameter Comparison

Engineering Selection Recommendations

CT-94EY503 is the direct substitute for the CT-94Y-503. This part maintains identical electrical specifications and physical dimensions while offering active product status and RoHS3 compliance. The CT-94EY503 is manufactured by Nidec Components Corporation and represents the primary replacement option for obsolete CT-94Y-503 applications.

3296Y-1-503 is the manufacturer-recommended alternative from Bourns Inc. This part matches all critical electrical parameters and maintains compatible through-hole PC pin termination. The primary difference is the increased number of turns (25 versus 18), which provides finer adjustment resolution. Physical dimensions are within acceptable tolerance for standard through-hole PCB mounting. This option is suitable for applications where the additional adjustment turns do not conflict with mechanical constraints or adjustment speed requirements.

Selection between CT-94EY503 and 3296Y-1-503 depends on RoHS compliance requirements for the end application. The CT-94EY503 provides RoHS3 compliance, while the 3296Y-1-503 maintains RoHS non-compliant status consistent with the original CT-94Y-503.

Frequently Asked Questions (FAQ)

Q: Can CT-94EY503 be used as a direct replacement for CT-94Y-503?

A: Yes. The CT-94EY503 maintains identical electrical specifications (50 kOhms, 0.5W, ±10% tolerance, ±100ppm/°C), identical number of turns (18), and identical physical dimensions (0.378" x 0.189" face). PC pin termination and through-hole mounting are identical. The primary advantage is active product status and RoHS3 compliance.

Q: What is the difference between CT-94EY503 and 3296Y-1-503?

A: Both parts share identical electrical specifications and termination style. The 3296Y-1-503 features 25 turns compared to 18 turns in the CT-94EY503, providing finer adjustment resolution. Physical dimensions differ slightly (0.375" x 0.190" versus 0.378" x 0.189"), remaining within acceptable tolerance for through-hole mounting. The 3296Y-1-503 is manufactured by Bourns Inc. under the Trimpot® 3296 series.

Q: Are physical dimension differences between substitutes significant?

A: The dimensional variations between CT-94EY503 (0.378" x 0.189") and 3296Y-1-503 (0.375" x 0.190") are within standard manufacturing tolerances for through-hole trimmer potentiometers. Both parts fit standard PCB mounting patterns for this component category. Verify PCB layout constraints if space is critical.

Q: Does the increased turn count of 3296Y-1-503 affect circuit performance?

A: The 25-turn design of 3296Y-1-503 provides finer adjustment granularity compared to the 18-turn design. This does not alter electrical performance but affects adjustment speed and resolution. Applications requiring rapid adjustment may prefer the 18-turn design, while applications requiring precise calibration benefit from the 25-turn option.

Q: What are the RoHS compliance implications?

A: CT-94EY503 is RoHS3 compliant, suitable for applications with RoHS requirements. The original CT-94Y-503 and 3296Y-1-503 are RoHS non-compliant. Select CT-94EY503 for new designs or applications subject to RoHS regulations.