UCZ1A331MCL6GS Equivalent & Substitute Parts

Part Overview

The UCZ1A331MCL6GS is a 330 µF, 10 V aluminum electrolytic capacitor in surface mount radial can package manufactured by Nichicon. This component is classified as Not For New Designs, indicating it has been superseded in Nichicon's product line. The part operates across -40°C to 125°C with a rated lifetime of 3000 hours at 125°C and features 200 mOhm equivalent series resistance. Finding equivalent and substitute parts is necessary for applications requiring continued supply, design flexibility, or performance optimization while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	10 V
Tolerance	±20%
ESR (Equivalent Series Resistance)	200 mOhm
Lifetime @ 125°C	3000 Hours
Operating Temperature Range	-40°C to 125°C
Package Type	Radial, Can - SMD
Mounting Type	Surface Mount
Polarization	Polar
Size / Dimension	0.315" Dia (8.00 mm)
Height - Seated (Max)	0.394" (10.00 mm)
Surface Mount Land Size	0.327" L x 0.327" W (8.30 mm x 8.30 mm)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the UCZ1A331MCL6GS is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

Capacitance: 330 µF (exact match required)
Voltage Rating: 10 V (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)
Package Type: Radial, Can - SMD (exact match required)
Mounting Type: Surface Mount (exact match required)

Secondary Compatibility Parameters:

Operating Temperature Range: -40°C to 125°C (must encompass or match)
Physical Dimensions: 0.315" Dia (8.00 mm) or 0.394" Dia (10.00 mm) acceptable with PCB layout verification
Surface Mount Land Size: 8.30 mm x 8.30 mm or 10.30 mm x 10.30 mm (footprint dependent)
ESR: 200 mOhm to 500 mOhm (performance variation acceptable within ripple current specifications)
Lifetime @ 125°C: 2000 to 3000 hours (application dependent)

All substitute parts listed maintain full electrical equivalence in capacitance, voltage, and tolerance specifications. Physical dimension variations require PCB footprint verification prior to implementation.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	ESR @ 100 kHz	Lifetime @ 125°C	Size (Dia)	Height (Max)	Product Status	Packaging
UCZ1A331MCL6GS	Nichicon	330 µF	10 V	±20%	200 mOhm	3000 Hrs	8.00 mm	10.00 mm	Not For New Designs	Tape & Reel
UCJ1A331MCL1GS	Nichicon	330 µF	10 V	±20%	1.5 Ohm	2000 Hrs	10.00 mm	10.50 mm	Active	Tape & Reel
EEE-TG1A331P	Panasonic	330 µF	10 V	±20%	300 mOhm	2000 Hrs	10.00 mm	10.20 mm	Active	Tape & Reel
EEE-TG1A331UP	Panasonic	330 µF	10 V	±20%	500 mOhm	2000 Hrs	8.00 mm	10.20 mm	Active	Cut Tape & Digi-Reel
EEE-TK1A331P	Panasonic	330 µF	10 V	±20%	200 mOhm	3000 Hrs	10.00 mm	10.20 mm	Active	Tape & Reel
EEE-TK1A331UP	Panasonic	330 µF	10 V	±20%	300 mOhm	3000 Hrs	8.00 mm	10.20 mm	Active	Tape & Reel
EEE-TP1A331AP	Panasonic	330 µF	10 V	±20%	Not Specified	3000 Hrs	10.00 mm	10.20 mm	Active	Tape & Reel
EEE-TPA331UAP	Panasonic	330 µF	10 V	±20%	Not Specified	2000 Hrs	8.00 mm	10.20 mm	Active	Tape & Reel
EMVH100ARA331MJA0G	Chemi-Con	330 µF	10 V	±20%	300 mOhm	2000 Hrs	10.00 mm	10.00 mm	Active	Tape & Reel

Engineering Selection Recommendations

Direct Replacement (Highest Compatibility): EEE-TK1A331P and EEE-TK1A331UP are the preferred substitutes. Both are manufactured by Panasonic, maintain Active product status, and provide 3000-hour lifetime at 125°C matching the original UCZ1A331MCL6GS specification. EEE-TK1A331P accommodates 10.00 mm diameter footprints; EEE-TK1A331UP accommodates 8.00 mm diameter footprints. Both comply with ROHS3 and AEC-Q200 automotive standards.

Alternative Substitutes (Verified Compatibility): EEE-TG1A331P, EEE-TG1A331UP, EEE-TP1A331AP, and EEE-TPA331UAP are Active Panasonic products with full electrical equivalence. These parts maintain 10 V, 330 µF, ±20% specifications and comply with ROHS3. EEE-TP1A331AP and EEE-TPA331UAP carry AEC-Q200 automotive certification and High Temperature Reflow capability. Lifetime ratings of 2000 hours at 125°C are acceptable for general-purpose applications.

Cross-Manufacturer Substitutes: UCJ1A331MCL1GS (Nichicon, Active) and EMVH100ARA331MJA0G (Chemi-Con, Active) provide electrical equivalence with 2000-hour lifetime ratings. UCJ1A331MCL1GS features significantly lower ESR (1.5 Ohm) and higher ripple current capability. EMVH100ARA331MJA0G is optimized for automotive applications.

Selection Criteria:

For footprint-critical designs: Verify PCB land size compatibility (8.30 mm or 10.30 mm)
For automotive applications: Prioritize parts with AEC-Q200 certification (EEE-TG1A331P, EEE-TP1A331AP, EEE-TPA331UAP)
For high ripple current requirements: UCJ1A331MCL1GS provides superior performance
For general-purpose applications: Any listed substitute maintains full compatibility

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with different physical dimensions? A: Physical dimensions must be verified against PCB footprint specifications. The UCZ1A331MCL6GS uses 8.00 mm diameter with 8.30 mm x 8.30 mm land size. Substitutes with 10.00 mm diameter require 10.30 mm x 10.30 mm land size. Footprint incompatibility will result in assembly failure.

Q: What is the impact of ESR variation among substitute parts? A: ESR affects ripple current handling and thermal performance. The original part specifies 200 mOhm. Substitutes range from 200 mOhm to 1.5 Ohm. Lower ESR (200-300 mOhm) provides superior ripple current capacity and reduced heat generation. Higher ESR (500 mOhm to 1.5 Ohm) is acceptable for low-ripple-current applications but may require thermal verification.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance, matching the original UCZ1A331MCL6GS specification.

Q: What is the difference between Tape & Reel and Cut Tape & Digi-Reel packaging? A: Tape & Reel (TR) packaging is continuous reel format for high-volume automated assembly. Cut Tape & Digi-Reel packaging provides smaller quantity options with reel capability. Both are surface mount compatible. Selection depends on procurement volume and assembly equipment compatibility.

Q: Can I substitute a part with 2000-hour lifetime for a 3000-hour rated part? A: Substitution is application-dependent. If the original design requires 3000-hour lifetime at 125°C, a 2000-hour substitute may not meet reliability requirements. Verify application lifetime specifications before substitution.

Q: Which substitute offers the best ripple current performance? A: EEE-TP1A331AP provides the highest ripple current capacity at 500 mA @ 100 kHz and 325 mA @ 120 Hz, compared to the original part's 270 mA @ 100 kHz and 135 mA @ 120 Hz. This part is suitable for high-ripple-current applications.

Q: Are automotive-rated substitutes required for all applications? A: Automotive-rated parts (AEC-Q200 certified) are required only for automotive applications. General-purpose applications can use non-automotive-rated substitutes. Verify application requirements before selection.

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