Equivalent & Substitute Parts for EEV-FK1A331P

Part Overview

The EEV-FK1A331P is a 330 µF, 10 V aluminum electrolytic capacitor in surface mount radial can package manufactured by Panasonic Electronic Components. This part is classified as obsolete and has been superseded by active production alternatives. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and meet current compliance requirements including RoHS3 and REACH standards.

Key Parameters

Parameter	EEV-FK1A331P
Capacitance	330 µF
Voltage Rating	10 V
Tolerance	±20%
Lifetime @ 105°C	2000 Hrs
Operating Temperature Range	-55°C ~ 105°C
Polarization	Polar
Package Type	Radial, Can - SMD
Size / Dimension	0.315" Dia (8.00mm)
Height - Seated (Max)	0.413" (10.50mm)
Surface Mount Land Size	0.327" L x 0.327" W (8.30mm x 8.30mm)
Mounting Type	Surface Mount
Impedance	160 mOhms
Ripple Current @ 100 kHz	600 mA
AEC-Q200 Rating	Yes
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitute parts for the EEV-FK1A331P are grouped based on the following electrical and mechanical parameters that determine functional equivalence:

Primary Substitution Criteria:

Capacitance: 330 µF (fixed)
Tolerance: ±20% (fixed)
Package Type: Radial, Can - SMD (fixed)
Physical Dimensions: 0.315" Dia (8.00mm), Height 0.413" (10.50mm) (fixed)
Surface Mount Land Size: 0.327" L x 0.327" W (8.30mm x 8.30mm) (fixed)
Mounting Type: Surface Mount (fixed)
Operating Temperature Range: -55°C ~ 105°C (fixed)
Polarization: Polar (fixed)
AEC-Q200 Rating: Yes (fixed)

Variable Parameters Defining Substitute Categories:

Voltage Rating: 10 V (original), 16 V, or 25 V (upgrades)
Lifetime @ 105°C: 2000 Hrs (original) or 5000 Hrs (extended life)
RoHS Compliance: RoHS non-compliant (original) or ROHS3 Compliant (active alternatives)
Series Designation: FK or FP (different internal designs)
ESR Characteristics: 160 mOhms or 80 mOhms @ 100kHz

Direct equivalents maintain identical voltage ratings and lifetimes. Upgrade substitutes provide higher voltage ratings or extended lifetime ratings while maintaining all other mechanical and electrical parameters.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lifetime @ 105°C	Operating Temp	Size (Dia x H)	Impedance	Ripple Current @ 100 kHz	Product Status	RoHS Status	Packaging
EEV-FK1A331P	Panasonic	330 µF	10 V	±20%	2000 Hrs	-55°C ~ 105°C	8.00mm x 10.50mm	160 mOhms	600 mA	Obsolete	RoHS non-compliant	Bulk
EEE-FK1A331P	Panasonic	330 µF	10 V	±20%	2000 Hrs	-55°C ~ 105°C	8.00mm x 10.50mm	160 mOhms	600 mA	Active	ROHS3 Compliant	Tape & Reel
EEE-FP1A331AP	Panasonic	330 µF	10 V	±20%	2000 Hrs	-55°C ~ 105°C	8.00mm x 10.20mm	80 mOhms @ 100kHz	850 mA	Active	ROHS3 Compliant	Tape & Reel
EEE-FK1A331AL	Panasonic	330 µF	10 V	±20%	2000 Hrs	-55°C ~ 105°C	8.00mm x 10.50mm	160 mOhms	600 mA	Active	ROHS3 Compliant	Tape & Reel
EEE-FK1A331GP	Panasonic	330 µF	10 V	±20%	5000 Hrs	-55°C ~ 105°C	8.00mm x 10.50mm	160 mOhms	600 mA	Active	ROHS3 Compliant	Tape & Reel
EEE-FK1C331AP	Panasonic	330 µF	16 V	±20%	2000 Hrs	-55°C ~ 105°C	8.00mm x 10.50mm	160 mOhms	600 mA	Active	ROHS3 Compliant	Tape & Reel
EEE-FK1C331GP	Panasonic	330 µF	16 V	±20%	5000 Hrs	-55°C ~ 105°C	8.00mm x 10.50mm	160 mOhms	600 mA	Active	ROHS3 Compliant	Tape & Reel
EEE-FK1C331P	Panasonic	330 µF	16 V	±20%	2000 Hrs	-55°C ~ 105°C	8.00mm x 10.50mm	160 mOhms	600 mA	Active	ROHS3 Compliant	Tape & Reel
EEE-FK1E331AP	Panasonic	330 µF	25 V	±20%	2000 Hrs	-55°C ~ 105°C	8.00mm x 10.50mm	160 mOhms	600 mA	Active	ROHS3 Compliant	Tape & Reel
EEE-FK1E331GP	Panasonic	330 µF	25 V	±20%	5000 Hrs	-55°C ~ 105°C	8.00mm x 10.50mm	160 mOhms	600 mA	Active	ROHS3 Compliant	Tape & Reel
EEE-FK1E331P	Panasonic	330 µF	25 V	±20%	2000 Hrs	-55°C ~ 105°C	8.00mm x 10.50mm	160 mOhms	600 mA	Active	ROHS3 Compliant	Tape & Reel

Engineering Selection Recommendations

Direct Equivalent (Same Voltage Rating - 10 V):

EEE-FK1A331P is the direct active production equivalent to the obsolete EEV-FK1A331P. Both maintain 10 V rating, 2000 Hrs lifetime at 105°C, and identical mechanical dimensions. The primary difference is product status (Active vs. Obsolete) and RoHS compliance (ROHS3 Compliant vs. RoHS non-compliant). This part is recommended for direct replacement in new designs and existing production requiring compliance with current environmental regulations.

EEE-FK1A331AL provides the same electrical and mechanical specifications as EEE-FK1A331P with the addition of halogen-free designation, suitable for applications requiring high-temperature reflow processes.

EEE-FK1A331GP extends the lifetime to 5000 Hrs at 105°C while maintaining all other parameters, providing enhanced reliability for long-life applications.

EEE-FP1A331AP offers lower ESR (80 mOhms @ 100kHz versus 160 mOhms) and higher ripple current capability (850 mA @ 100 kHz versus 600 mA), with a slightly reduced height (10.20mm versus 10.50mm). This variant is suitable for applications requiring improved high-frequency performance.

Voltage Upgrade Substitutes (16 V and 25 V Ratings):

EEE-FK1C331P, EEE-FK1C331AP, EEE-FK1C331GP provide 16 V rating with identical capacitance and mechanical form factor. These are suitable for circuits where the original 10 V specification allows voltage derating.

EEE-FK1E331P, EEE-FK1E331AP, EEE-FK1E331GP provide 25 V rating with identical capacitance and mechanical form factor. These offer maximum voltage margin and are suitable for circuits with variable supply voltages or where design margin is required.

All substitute parts maintain AEC-Q200 automotive qualification, ROHS3 compliance, and REACH unaffected status, ensuring compatibility with current automotive and industrial standards.

Frequently Asked Questions (FAQ)

Q: Can EEE-FK1A331P directly replace EEV-FK1A331P?

A: Yes. EEE-FK1A331P is the direct active production equivalent. Both parts share identical capacitance (330 µF), voltage rating (10 V), tolerance (±20%), lifetime (2000 Hrs @ 105°C), and mechanical dimensions (8.00mm Dia x 10.50mm Height). The primary differences are product status and RoHS compliance. EEE-FK1A331P is ROHS3 compliant and in active production.

Q: What is the difference between EEE-FK1A331P and EEE-FP1A331AP?

A: Both maintain 330 µF capacitance and 10 V rating. EEE-FP1A331AP features lower ESR (80 mOhms @ 100kHz versus 160 mOhms) and higher ripple current capability (850 mA @ 100 kHz versus 600 mA). The seated height is slightly reduced (10.20mm versus 10.50mm). Selection depends on whether the application requires improved high-frequency performance characteristics.

Q: Can I use a 16 V or 25 V rated part instead of the 10 V original?

A: Yes, provided the circuit design allows voltage derating. Parts rated at 16 V or 25 V are mechanically and electrically compatible with the 10 V specification and can be used in applications where the actual operating voltage is at or below 10 V. Higher voltage ratings provide additional design margin and are suitable for circuits with variable supply voltages.

Q: What is the difference between 2000 Hrs and 5000 Hrs lifetime ratings?

A: Lifetime rating indicates the expected operational duration at maximum rated temperature (105°C) before capacitance degradation reaches specified limits. The 5000 Hrs variants (EEE-FK1A331GP, EEE-FK1C331GP, EEE-FK1E331GP) provide extended reliability for applications requiring longer service life or operating continuously at elevated temperatures.

Q: Are all substitute parts available in Tape & Reel packaging?

A: Yes. All active production substitutes are supplied in Tape & Reel (TR) packaging. The original EEV-FK1A331P was supplied in bulk packaging. Tape & Reel packaging is standard for surface mount production and automated assembly processes.

Q: Do all substitute parts meet automotive standards?

A: Yes. All substitute parts listed maintain AEC-Q200 automotive qualification, ROHS3 compliance, and REACH unaffected status, ensuring compatibility with automotive and industrial applications.

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