CT6P503 Equivalent & Substitute Parts

Part Overview

The CT6P503 is a 50 kOhm, 0.5W through-hole trimmer potentiometer manufactured by Vishay Beyschlag/Draloric/BC Components. This cermet-based trimmer features top adjustment with PC pin termination and is housed in a square 7.00mm x 7.00mm package. The part is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing maintenance, repair, and new design implementations where legacy component compatibility is required.

Substiute Parts

CT6P503

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 1160CT6P503 Datasheet

Current PartRFQ

CT-6EP503

Nidec Components CorporationIn Stock: 5057CT-6EP503 Datasheet

DirectRFQ

3362P-1-503

Bourns Inc.In Stock: 45003362P-1-503 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CT6P503 is determined by strict equivalence across all critical electrical and mechanical parameters. The following parameters must match or be compatible:

• Resistance value: 50 kOhms
• Power rating: 0.5W minimum
• Tolerance: ±10%
• Temperature coefficient: ±100ppm/°C
• Number of turns: 1
• Adjustment type: Top Adjustment
• Resistive material: Cermet
• Mounting type: Through Hole
• Termination style: PC Pins
• Package footprint compatibility: Square or rectangular format within 7.00mm x 7.00mm nominal dimensions

The identified substitutes meet these criteria and are available as active products from alternative manufacturers, providing continuity for applications requiring CT6P503 functionality.

Parameter Comparison

Engineering Selection Recommendations

Both CT-6EP503 (Nidec Components Corporation) and 3362P-1-503 (Bourns Inc.) are functionally equivalent substitutes for the obsolete CT6P503.

CT-6EP503 (Nidec): This substitute maintains identical electrical specifications and package dimensions to the original part. The CT-6EP503 is ROHS3 compliant and carries active product status with 4989 units in stock. This option is recommended for applications requiring strict dimensional compatibility and modern regulatory compliance.

3362P-1-503 (Bourns): This substitute meets all electrical requirements and is part of the Trimpot® 3362 sealed series. The package dimensions are nominally equivalent (6.99mm x 6.60mm versus 7.00mm x 7.00mm), providing functional compatibility within standard PCB layout tolerances. The 3362P-1-503 is active and available with 4400 units in stock. This option is suitable for applications where the Bourns Trimpot® series is already established in the design ecosystem.

Selection between these substitutes should be based on supply chain availability, existing design qualification history, and regulatory compliance requirements specific to the end application.

Frequently Asked Questions (FAQ)

Q: Can the CT-6EP503 be used as a direct replacement for CT6P503?

A: Yes. The CT-6EP503 matches all electrical parameters (50 kOhms, 0.5W, ±10% tolerance, ±100ppm/°C temperature coefficient, 1 turn, top adjustment, cermet material) and maintains identical package dimensions (7.00mm x 7.00mm square). PC pin termination and through-hole mounting are identical. The CT-6EP503 is the direct manufacturer equivalent from Nidec Components Corporation.

Q: What are the dimensional differences between the CT6P503 and 3362P-1-503?

A: The CT6P503 features a square package of 0.276" x 0.276" (7.00mm x 7.00mm). The 3362P-1-503 has a rectangular package of 0.275" x 0.260" (6.99mm x 6.60mm). These dimensions are within standard PCB layout tolerances and do not affect electrical functionality. Physical board space and mounting hole positioning should be verified during design integration.

Q: Are there RoHS compliance differences between the substitutes?

A: Yes. The CT-6EP503 is ROHS3 compliant, meeting current regulatory requirements. The original CT6P503 and the 3362P-1-503 are both RoHS non-compliant. For applications requiring RoHS compliance, the CT-6EP503 is the appropriate selection.

Q: What is the difference between PC pin and other termination styles for these trimmers?

A: PC pins are designed for direct insertion into printed circuit board holes and soldering. All three parts (CT6P503, CT-6EP503, and 3362P-1-503) use PC pin termination, ensuring compatibility with standard through-hole assembly processes.

Q: Can I use either substitute interchangeably in my design?

A: Both substitutes are electrically and mechanically equivalent. Selection depends on supply availability, design qualification history with either manufacturer, and regulatory compliance requirements. Once selected, maintain consistency within a production run to avoid qualification and supply chain complications.