CT6W503 Equivalent & Substitute Parts Reference

Part Overview

The CT6W503 is a 50 kOhm, 0.5W through-hole trimmer potentiometer manufactured by Vishay Beyschlag/Draloric/BC Components. This cermet-based trimmer features PC pin termination, top adjustment, and a 1-turn configuration in a compact square form factor (7.00mm x 7.00mm). The part is currently obsolete, making equivalent substitutes necessary for ongoing production, maintenance, and repair applications where this component specification is required.

Substiute Parts

CT6W503

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 684CT6W503 Datasheet

Current PartRFQ

CT-6EW503

Nidec Components CorporationIn Stock: 817CT-6EW503 Datasheet

DirectRFQ

3362H-1-503

Bourns Inc.In Stock: 25053362H-1-503 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the CT6W503 is determined by strict equivalence across the following critical parameters:

• Resistance value: 50 kOhms
• Power rating: 0.5W (1/2W)
• 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
• Form factor: Square configuration approximately 7.00mm x 7.00mm

Parts meeting all these parameters are classified as direct substitutes. Variations in manufacturer, packaging, or compliance status do not affect functional equivalence when all electrical and mechanical parameters align.

Parameter Comparison

Engineering Selection Recommendations

Both CT-6EW503 (Nidec Components Corporation) and 3362H-1-503 (Bourns Inc.) are functionally equivalent substitutes for the obsolete CT6W503. Selection between these options depends on application requirements:

CT-6EW503 is recommended for applications requiring RoHS3 compliance. This part maintains active product status with 778 units in stock and identical electrical specifications and form factor to the original CT6W503.

3362H-1-503 is recommended for applications where Bourns Trimpot® 3362 series integration is preferred. This part maintains active product status with 2400 units in stock. The rectangular form factor (6.99mm x 6.60mm) differs slightly from the original square configuration but remains compatible with standard through-hole PCB layouts. RoHS compliance status differs from the original specification.

Both substitutes share identical resistance, power rating, tolerance, temperature coefficient, number of turns, adjustment type, resistive material, mounting type, and termination style with the CT6W503.

Frequently Asked Questions (FAQ)

Q: Can CT-6EW503 and 3362H-1-503 be used interchangeably with CT6W503?

A: Both parts meet all critical electrical and mechanical parameters required for functional equivalence. The CT-6EW503 maintains identical form factor. The 3362H-1-503 has a slightly different rectangular form factor but remains compatible with through-hole PCB designs.

Q: What is the difference in RoHS compliance between the substitutes?

A: CT-6EW503 is ROHS3 compliant. 3362H-1-503 is RoHS non-compliant, matching the original CT6W503 status. Selection depends on regulatory requirements for your application.

Q: Are there packaging differences between the substitutes?

A: CT-6EW503 is supplied in Bulk packaging. 3362H-1-503 is supplied in Tube packaging. Both formats are standard for through-hole components and do not affect functional performance.

Q: How do the form factors compare?

A: CT6W503 and CT-6EW503 both feature a square 7.00mm x 7.00mm face. 3362H-1-503 features a rectangular 6.99mm x 6.60mm face. Both configurations accommodate standard 0.1" pitch PCB hole spacing.

Q: Which substitute has better availability?

A: 3362H-1-503 has 2400 units in stock. CT-6EW503 has 778 units in stock. Both maintain active product status with established supply chains.