EVN-DCAA03B55 Equivalent & Substitute Parts

Part Overview

The EVN-DCAA03B55 is a 500 kOhms trimmer potentiometer manufactured by Panasonic Electronic Components. This through-hole component features PC pin termination, side adjustment, and carbon resistive material rated for 0.1W operation. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications requiring this resistance value and power rating.

Substiute Parts

EVN-DCAA03B55

Panasonic Electronic ComponentsIn Stock: 911EVN-DCAA03B55 Datasheet

Current PartRFQ

3306K-1-504

Bourns Inc.In Stock: 9263306K-1-504 Datasheet

DirectRFQ

CT-6EX504

Nidec Components CorporationIn Stock: 1116CT-6EX504 Datasheet

SimilarRFQ

CT6V504N

TE Connectivity Passive ProductIn Stock: 1230CT6V504N Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the EVN-DCAA03B55 is determined by the following critical parameters:

• Resistance Value: 500 kOhms (exact match required)
• Mounting Type: Through Hole (maintains PCB compatibility)
• Termination Style: PC Pins (ensures direct pin compatibility)
• Adjustment Type: Side Adjustment (functional equivalence)
• Number of Turns: 1 Turn (operational consistency)

The substitute parts listed below maintain these core parameters. Variations in power rating, tolerance, temperature coefficient, and resistive material (carbon vs. cermet) are permitted within the scope of component substitution, as these parameters do not affect the fundamental circuit function when the application requirements are met.

Parameter Comparison

Engineering Selection Recommendations

3306K-1-504 (Bourns Inc., Trimpot® 3306 Series): This part is ROHS3 compliant and maintains active product status. The increased power rating (0.2W vs. 0.1W) provides operational margin. Improved tolerance (±25%) and specified temperature coefficient (±250ppm/°C) enhance performance stability. Suitable for applications where compliance certification and long-term availability are required.

CT-6EX504 (Nidec Components Corporation, CT6 Series): This part offers the highest power rating (0.5W) and tightest tolerance (±10%) among the substitutes. ROHS3 compliance and active product status ensure supply continuity. The superior temperature coefficient (±100ppm/°C) supports temperature-sensitive applications. Recommended for designs requiring enhanced performance margins and precision.

CT6V504N (TE Connectivity Passive Product, CT6/Citec Series): This part matches the original carbon resistive material and identical power rating (0.1W), providing the closest functional equivalence to the EVN-DCAA03B55. Active product status ensures availability. Suitable for direct replacement in applications where material consistency and power rating matching are design requirements.

Frequently Asked Questions (FAQ)

Q: Can the 3306K-1-504 replace the EVN-DCAA03B55 in all applications?

A: The 3306K-1-504 maintains all critical substitution parameters: 500 kOhms resistance, through-hole mounting, PC pin termination, side adjustment, and 1-turn operation. The higher power rating (0.2W vs. 0.1W) is compatible with applications designed for 0.1W operation. Verify PCB layout accommodates the different physical dimensions (6.81mm x 8.10mm vs. 8.00mm x 6.40mm).

Q: What is the difference between carbon and cermet resistive materials in these trimmers?

A: Both carbon and cermet materials are used in trimmer potentiometers. Carbon material (EVN-DCAA03B55, CT6V504N) provides cost-effective performance. Cermet material (3306K-1-504, CT-6EX504) offers improved temperature stability and tighter tolerance specifications. Material selection does not affect basic substitution compatibility when resistance value and electrical ratings match.

Q: Is the CT-6EX504 suitable for applications requiring the exact 0.1W power rating?

A: The CT-6EX504 is rated for 0.5W operation, which exceeds the 0.1W requirement. This higher rating does not create incompatibility; it provides additional operational margin. The component will function correctly in circuits designed for 0.1W trimmers. No derating or performance degradation occurs.

Q: How do tolerance differences affect circuit performance?

A: The EVN-DCAA03B55 and CT6V504N specify ±30% tolerance, while the 3306K-1-504 specifies ±25% and CT-6EX504 specifies ±10%. Tighter tolerance (lower percentage) indicates more precise resistance values. For applications sensitive to resistance variation, the CT-6EX504 (±10%) provides superior accuracy. For general-purpose trimming applications, all tolerance levels are functionally equivalent.

Q: Are there physical space constraints when substituting these parts?

A: Physical dimensions vary among the substitutes. The CT6V504N (6.70mm x 6.40mm) is closest to the original EVN-DCAA03B55 (8.00mm x 6.40mm). The 3306K-1-504 (6.81mm x 8.10mm) and CT-6EX504 (8.20mm x 7.00mm) have different aspect ratios. Verify PCB layout and component placement clearances before substitution.

Q: What compliance certifications should I consider for new designs?

A: The 3306K-1-504 and CT-6EX504 are ROHS3 compliant, meeting current environmental regulations. The CT6V504N lists RoHS status as not applicable. For applications requiring regulatory compliance documentation, the Bourns and Nidec parts provide certified compliance status.