EEU-FC2A390B Equivalent & Substitute Parts

Part Overview

The EEU-FC2A390B is a 39 µF, 100 V aluminum electrolytic capacitor in radial configuration manufactured by Panasonic Electronic Components. This component is rated for 3000 hours at 105°C and carries AEC-Q200 automotive qualification. The part is currently active in production with ROHS3 compliance and is suitable for automotive applications requiring reliable energy storage and filtering in high-temperature environments.

Substitute parts are identified when equivalent electrical specifications and mechanical compatibility allow direct replacement in circuit applications, maintaining functional performance within the same operating parameters.

Substiute Parts

EEU-FC2A390B

Panasonic Electronic ComponentsIn Stock: 950EEU-FC2A390B Datasheet

Current PartRFQ

EEU-FC2A390L

Panasonic Electronic ComponentsIn Stock: 1019EEU-FC2A390L Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the EEU-FC2A390B is determined by the following criteria:

Electrical Parameters (Must Match):

• Capacitance: 39 µF
• Voltage Rating: 100 V
• Tolerance: ±20%
• Polarization: Polar

Mechanical Parameters (Must Match):

• Mounting Type: Through Hole
• Package Type: Radial, Can
• Lead Spacing: 0.197" (5.00 mm)

Compliance & Qualification (Must Match):

• AEC-Q200 automotive rating
• ROHS3 compliance
• Operating temperature range: -55°C to 105°C

Allowable Variations:

• Lifetime @ 105°C: May differ (substitute rated for 2000 Hrs minimum)
• Physical dimensions (diameter, height): May vary within mechanical compatibility constraints
• Ripple current ratings: May differ based on thermal design
• Impedance: May vary within acceptable operating parameters

The substitute part EEU-FC2A390L meets all mandatory electrical and mechanical criteria while maintaining automotive qualification and compliance standards.

Parameter Comparison

Engineering Selection Recommendations

Both EEU-FC2A390B and EEU-FC2A390L are active production parts with identical AEC-Q200 automotive qualification and ROHS3 compliance. Selection between these parts is based on application-specific requirements:

EEU-FC2A390B is specified when the application requires extended operational life at elevated temperature, with a rated lifetime of 3000 hours at 105°C. The larger physical diameter (10.00 mm) may be preferred in applications with less stringent PCB space constraints.

EEU-FC2A390L is suitable for applications where the 2000-hour lifetime at 105°C meets design requirements. The smaller diameter (8.00 mm) provides a space-saving alternative while maintaining equivalent electrical performance. Higher ripple current ratings and lower impedance may benefit applications with elevated AC current demands.

Both parts maintain identical voltage rating, capacitance, tolerance, and lead spacing, ensuring direct mechanical and electrical compatibility within the specified operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can EEU-FC2A390L replace EEU-FC2A390B in all applications?

A: Direct replacement is possible when the application lifetime requirement does not exceed 2000 hours at 105°C. The substitute part maintains identical electrical specifications (39 µF, 100 V, ±20%) and mechanical compatibility (lead spacing, through-hole mounting). Physical dimensions differ; verify PCB layout accommodates the smaller diameter and taller height of the substitute.

Q: What is the significance of the lifetime rating difference?

A: Lifetime rating indicates the expected operational duration at maximum rated temperature (105°C) before capacitance degradation reaches specified limits. The EEU-FC2A390B (3000 Hrs) provides extended service life compared to EEU-FC2A390L (2000 Hrs). Application duty cycle and thermal environment determine which rating is appropriate.

Q: Are there mechanical compatibility concerns between these parts?

A: Both parts share identical lead spacing (5.00 mm) and through-hole mounting configuration. However, physical dimensions differ: EEU-FC2A390B is 10.00 mm diameter × 17.00 mm height; EEU-FC2A390L is 8.00 mm diameter × 22.00 mm height. Verify PCB layout and component clearances accommodate the substitute geometry.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both EEU-FC2A390B and EEU-FC2A390L carry AEC-Q200 rating and ROHS3 compliance, meeting automotive industry standards for reliability and environmental compliance.

Q: How do ripple current ratings affect part selection?

A: Ripple current capacity indicates the maximum AC current the capacitor can handle without exceeding temperature limits. EEU-FC2A390L exhibits higher ripple current ratings (295.8 mA @ 120 Hz; 455 mA @ 100 kHz) compared to EEU-FC2A390B (260 mA @ 120 Hz; 400 mA @ 100 kHz). Applications with elevated AC current demands may benefit from the substitute part's higher capacity.