EEE-FKA331XSP Equivalent & Substitute Parts

Part Overview

The EEE-FKA331XSP is a 330 µF, 10 V aluminum electrolytic capacitor in surface mount radial can package manufactured by Panasonic Electronic Components. This component is classified as "Not For New Designs," indicating it has been superseded in the product lifecycle. Organizations using this part in active production or maintenance applications require equivalent alternatives that maintain electrical and mechanical compatibility while meeting current design standards and compliance requirements.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	10 V
Tolerance	±20%
ESR @ 100 kHz	340 mOhm
Lifetime @ 105°C	2000 Hrs
Operating Temperature Range	-55°C to 105°C
Package Type	Radial, Can - SMD
Physical Dimensions	0.248" Dia (6.30 mm), Height 0.315" (8.00 mm)
Land Size	0.260" L × 0.260" W (6.60 mm × 6.60 mm)
Mounting Type	Surface Mount
Polarization	Polar
AEC-Q200 Rating	Yes
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the EEE-FKA331XSP is determined by the following mandatory parameters:

Electrical Compatibility Requirements:

Capacitance: 330 µF (exact match required)
Voltage Rating: 10 V minimum (equal or higher voltage rating acceptable)
Tolerance: ±20% (matching tolerance)
Lifetime: 2000 Hrs @ 105°C minimum
Operating Temperature: -55°C to 105°C (full range required)
Polarization: Polar (required)

Mechanical Compatibility Requirements:

Package Type: Radial, Can - SMD (exact match required)
Physical Dimensions: 0.248" Dia (6.30 mm), Height 0.315" (8.00 mm) (exact match required)
Land Size: 0.260" L × 0.260" W (6.60 mm × 6.60 mm) (exact match required)
Mounting Type: Surface Mount (required)

Compliance Requirements:

AEC-Q200 Rating: Required for automotive applications
RoHS3 Compliance: Required
MSL Rating: 1 (Unlimited) preferred

Substitute parts are grouped into two categories: Upgrade Substitutes (higher voltage rating) and Parametric Equivalents (matching electrical and mechanical specifications).

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	ESR @ 100 kHz	Ripple Current @ 100 kHz	Product Status	Series	Halogen Free
EEE-FKA331XSP	Panasonic	330 µF	10 V	340 mOhm	280 mA	Not For New Designs	FKS	No
EEE-FTC331XAP	Panasonic	330 µF	16 V	160 mOhm	600 mA	Active	FT	No
EEE-FKA331XSL	Panasonic	330 µF	10 V	340 mOhm	280 mA	Not For New Designs	FKS	Yes
EEE-FTA331XAL	Panasonic	330 µF	10 V	160 mOhm	600 mA	Active	FT	Yes
EEE-FTA331XAP	Panasonic	330 µF	10 V	160 mOhm	600 mA	Active	FT	No
EEE-FNA331XUL	Panasonic	330 µF	10 V	340 mOhm	280 mA	Active	FN	Yes
EEE-FNA331XUP	Panasonic	330 µF	10 V	340 mOhm	280 mA	Active	FN	No
UCM1A331MCL1GS	Nichicon	330 µF	10 V	160 mOhm	600 mA	Active	UCM	No

Engineering Selection Recommendations

For Direct Replacement (Parametric Equivalents):

EEE-FNA331XUL and EEE-FNA331XUP are the primary recommended substitutes. Both are Panasonic FN series components with Active product status, matching all electrical and mechanical specifications of the EEE-FKA331XSP. EEE-FNA331XUL includes halogen-free construction. Both parts meet AEC-Q200 automotive qualification and ROHS3 compliance.

EEE-FKA331XSL provides parametric equivalence with halogen-free construction but retains "Not For New Designs" status, making it suitable only for legacy system maintenance where design refresh is not planned.

For Performance Enhancement (Upgrade Substitute):

EEE-FTC331XAP offers higher voltage rating (16 V) with improved electrical performance: 160 mOhm ESR (versus 340 mOhm) and 600 mA ripple current capability (versus 280 mA). This part is Active status and suitable for new designs. The higher voltage rating provides additional design margin in applications where the 10 V rating is marginal.

For Cross-Manufacturer Compatibility:

UCM1A331MCL1GS (Nichicon UCM series) provides electrical and mechanical compatibility with improved ESR performance (160 mOhm). This part is Active status and AEC-Q200 qualified. Note: REACH status is "Affected" for this part, requiring compliance verification in regulated markets.

For Halogen-Free Requirements:

EEE-FTA331XAL combines Active product status with halogen-free construction and improved ESR performance (160 mOhm). This part is recommended for applications with environmental or regulatory halogen restrictions.

Frequently Asked Questions (FAQ)

Q: Can EEE-FTC331XAP (16 V) be used in place of EEE-FKA331XSP (10 V)?

A: Yes. Higher voltage-rated capacitors are electrically compatible in circuits designed for lower voltages. The 16 V rating provides additional voltage margin. All other electrical and mechanical parameters match the original specification.

Q: What is the difference between EEE-FNA331XUL and EEE-FNA331XUP?

A: Both parts are electrically and mechanically identical. EEE-FNA331XUL includes halogen-free construction; EEE-FNA331XUP does not. Selection depends on environmental or regulatory requirements for halogen content.

Q: Why do some substitutes have lower ESR (160 mOhm vs. 340 mOhm)?

A: Lower ESR indicates improved electrical performance, particularly for ripple current handling and thermal characteristics. Parts with 160 mOhm ESR can handle higher ripple currents (600 mA vs. 280 mA). This is a performance enhancement, not a compatibility issue.

Q: Is the Nichicon UCM1A331MCL1GS suitable for automotive applications?

A: Yes. The UCM1A331MCL1GS carries AEC-Q200 qualification and meets automotive reliability standards. However, verify REACH compliance status for your specific market or application requirements.

Q: Can I use EEE-FKA331XSL instead of EEE-FNA331XUL?

A: Both parts are parametric equivalents with identical electrical and mechanical specifications. However, EEE-FKA331XSL is "Not For New Designs" status, while EEE-FNA331XUL is Active. For new designs or long-term production, EEE-FNA331XUL is the preferred choice.

Q: Are all substitute parts in the same physical package?

A: Yes. All substitute parts maintain the same radial can SMD package: 0.248" diameter (6.30 mm), 0.315" height (8.00 mm), with 0.260" × 0.260" (6.60 mm × 6.60 mm) land size. Direct PCB footprint compatibility is confirmed.

Q: What does "Not For New Designs" mean for EEE-FKA331XSP?

A: This designation indicates the part has been superseded in the manufacturer's product line. While existing inventory remains available, Panasonic recommends using Active status alternatives for new circuit designs. Existing designs may continue using this part for maintenance and replacement purposes.

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