Equivalent & Substitute Parts for EEE-1CA331UP

Part Overview

The Panasonic EEE-1CA331UP is a 330 µF, 16 V aluminum electrolytic capacitor in surface mount radial can package, rated for 2000 hours at 85°C with AEC-Q200 automotive qualification. This part is classified as "Not For New Designs," indicating it has been superseded. Identifying equivalent and substitute parts is necessary for ongoing production support, legacy system maintenance, and design optimization where enhanced performance characteristics are beneficial.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	16 V
Tolerance	±20%
Package Type	Radial, Can - SMD
Mounting	Surface Mount
Case Size	0.315" Dia (8.00mm)
Height	0.402" - 0.413" (10.20mm - 10.50mm)
Land Size	0.327" L x 0.327" W (8.30mm x 8.30mm)
Operating Temperature	-40°C to 85°C (main); -55°C to 105°C (substitutes)
Lifetime Rating	2000 Hrs @ 85°C (main); 1000-5000 Hrs @ 85-105°C (substitutes)
Ripple Current @ 120 Hz	320 mA (main); 320-552.5 mA (substitutes)
Ripple Current @ 10-100 kHz	544 mA @ 10 kHz (main); 600-850 mA @ 100 kHz (substitutes)
AEC-Q200 Rating	Yes
RoHS Status	RoHS Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the EEE-1CA331UP is determined by the following criteria:

Primary Compatibility Requirements:

Capacitance: 330 µF (exact match required)
Tolerance: ±20% (exact match required)
Package: Radial, Can - SMD (exact match required)
Land Size: 0.327" L x 0.327" W (8.30mm x 8.30mm) (exact match required)
Mounting Type: Surface Mount (exact match required)
AEC-Q200 Automotive Rating: Required
RoHS Compliance: Required
MSL Rating: 1 (Unlimited) (exact match required)

Allowable Variations:

Voltage Rating: 16 V (main) to 16 V, 25 V, or 35 V (substitutes) — higher voltage ratings are backward compatible
Operating Temperature Range: -40°C to 85°C (main) to -55°C to 105°C (substitutes) — extended range is acceptable
Lifetime @ Temperature: 1000-5000 Hrs @ 85-105°C — equal or greater lifetime is acceptable
Ripple Current Ratings: Equal or greater values are acceptable
ESR/Impedance: Lower values indicate improved performance and are acceptable
Series Designation: S, FK, FN, FP, FT series — all meet automotive requirements
Packaging Format: Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel® — both acceptable for manufacturing

All substitute parts listed maintain identical electrical performance at the 16 V rating while offering improved thermal characteristics, extended operational life, or enhanced ripple current handling.

Parameter Comparison

Part Number	Series	Voltage	Capacitance	Lifetime @ Temp	Operating Temp Range	Ripple Current @ 120 Hz	Ripple Current @ 100 kHz	Height (Max)	Product Status	Packaging
EEE-1CA331UP	S	16 V	330 µF	2000 Hrs @ 85°C	-40°C to 85°C	320 mA	544 mA @ 10 kHz	0.402" (10.20mm)	Not For New Designs	Tape & Reel
EEE-1CA331UAP	S	16 V	330 µF	1000 Hrs @ 85°C	-40°C to 85°C	320 mA	544 mA @ 10 kHz	0.402" (10.20mm)	Active	Tape & Reel
EEE-FK1C331AP	FK	16 V	330 µF	2000 Hrs @ 105°C	-55°C to 105°C	390 mA	600 mA	0.413" (10.50mm)	Active	Tape & Reel
EEE-FK1C331GP	FK	16 V	330 µF	5000 Hrs @ 105°C	-55°C to 105°C	450 mA	600 mA	0.413" (10.50mm)	Active	Tape & Reel
EEE-FK1C331P	FK	16 V	330 µF	2000 Hrs @ 105°C	-55°C to 105°C	450 mA	600 mA	0.413" (10.50mm)	Active	Tape & Reel
EEE-FK1E331AP	FK	25 V	330 µF	2000 Hrs @ 105°C	-55°C to 105°C	390 mA	600 mA	0.413" (10.50mm)	Active	Tape & Reel
EEE-FK1E331GP	FK	25 V	330 µF	5000 Hrs @ 105°C	-55°C to 105°C	450 mA	600 mA	0.413" (10.50mm)	Active	Tape & Reel
EEE-FT1V331AP	FT	35 V	330 µF	2000 Hrs @ 105°C	-55°C to 105°C	552.5 mA	850 mA	0.413" (10.50mm)	Active	Tape & Reel
EEE-FN1C331P	FN	16 V	330 µF	2000 Hrs @ 105°C	-55°C to 105°C	390 mA	600 mA	0.413" (10.50mm)	Active	Tape & Reel
EEE-FP1C331AP	FP	16 V	330 µF	2000 Hrs @ 105°C	-55°C to 105°C	552.5 mA	850 mA	0.402" (10.20mm)	Active	Cut Tape & Digi-Reel

Engineering Selection Recommendations

Direct Equivalent (Same Voltage Rating):

EEE-1CA331UAP is the direct active equivalent within the S series, maintaining identical electrical specifications at 16 V. However, it offers reduced lifetime (1000 Hrs @ 85°C versus 2000 Hrs @ 85°C). This part is suitable only where the lower thermal endurance is acceptable for the application.

Recommended Substitutes (16 V Rating with Enhanced Performance):

EEE-FN1C331P is the manufacturer-recommended substitute. It maintains the 16 V rating while extending operating temperature range to -55°C to 105°C and lifetime to 2000 Hrs @ 105°C. Ripple current capability increases to 390 mA @ 120 Hz and 600 mA @ 100 kHz. Height increases from 0.402" to 0.413", which remains within typical PCB layout tolerances for 8mm case sizes.

EEE-FK1C331P and EEE-FK1C331AP provide equivalent 16 V performance with identical lifetime (2000 Hrs @ 105°C) and extended temperature range. EEE-FK1C331GP extends lifetime to 5000 Hrs @ 105°C for applications requiring maximum thermal endurance.

EEE-FP1C331AP offers the highest ripple current capability (552.5 mA @ 120 Hz, 850 mA @ 100 kHz) at 16 V while maintaining the original 0.402" height. Packaging is Cut Tape & Digi-Reel rather than standard Tape & Reel.

Upgrade Options (Higher Voltage Ratings):

EEE-FK1E331P and EEE-FK1E331AP provide 25 V rating with 330 µF capacitance, suitable for applications requiring voltage margin or operating in higher voltage circuits. These maintain identical footprint and land size while extending thermal performance to -55°C to 105°C and 2000-5000 Hrs @ 105°C.

EEE-FT1V331AP provides 35 V rating with maximum ripple current handling (552.5 mA @ 120 Hz, 850 mA @ 100 kHz), appropriate for high-ripple-current automotive applications or designs requiring substantial voltage headroom.

All substitute parts maintain AEC-Q200 automotive qualification, RoHS3 compliance, and MSL 1 rating. All are currently in active production status.

Frequently Asked Questions (FAQ)

Q: Can EEE-1CA331UAP directly replace EEE-1CA331UP?

A: Electrically yes, but with a critical limitation. EEE-1CA331UAP reduces lifetime from 2000 Hrs @ 85°C to 1000 Hrs @ 85°C. Use only if application thermal profile and expected service life accommodate the reduced endurance rating.

Q: What is the primary difference between S series and FK series?

A: The S series (EEE-1CA) operates to 85°C maximum with 2000 Hrs lifetime at that temperature. FK series extends maximum operating temperature to 105°C and provides 2000-5000 Hrs lifetime at 105°C. FK series also increases ripple current ratings and impedance performance.

Q: Are height differences between 0.402" and 0.413" significant for PCB layout?

A: The 0.011" (0.28mm) difference is within standard PCB design tolerances for 8mm case sizes. Verify clearance to adjacent components and reflow oven profiles. Most applications accommodate this variation without redesign.

Q: When should I select a higher voltage rating (25 V or 35 V)?

A: Higher voltage ratings provide design margin in circuits where supply voltage may fluctuate or where transient overvoltage is possible. They also improve capacitor reliability under stress. Use 25 V for applications with 16-20 V nominal supply; use 35 V for 20-30 V supplies or high-ripple-current environments.

Q: What does "Not For New Designs" mean for EEE-1CA331UP?

A: This designation indicates the part is obsolete for new product development. Panasonic continues production for legacy system support, but new designs should select from active-status alternatives such as EEE-FN1C331P, EEE-FK1C331P, or EEE-FP1C331AP.

Q: Is EEE-FP1C331AP compatible with standard Tape & Reel assembly equipment?

A: EEE-FP1C331AP uses Cut Tape & Digi-Reel packaging rather than standard Tape & Reel. Verify your assembly equipment supports Digi-Reel format before specifying this part. Standard Tape & Reel alternatives (EEE-FK1C331P, EEE-FN1C331P) are available if equipment compatibility is a concern.

Q: Do all substitute parts maintain the same PCB footprint?

A: Yes. All parts use identical land size (0.327" L x 0.327" W / 8.30mm x 8.30mm) and case diameter (0.315" / 8.00mm). Height varies between 0.402" and 0.413", which is within standard tolerance for 8mm radial can packages.

Q: Which substitute offers the best overall performance upgrade?

A: EEE-FN1C331P is the manufacturer-recommended direct substitute, offering extended temperature range (-55°C to 105°C), improved lifetime (2000 Hrs @ 105°C), and increased ripple current (390 mA @ 120 Hz, 600 mA @ 100 kHz) while maintaining 16 V rating and active production status.

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