Equivalent & Substitute Parts for UCZ1A331MCS1GS

Part Overview

The Nichicon UCZ1A331MCS1GS is a 330 µF, 10 V aluminum electrolytic capacitor in surface mount radial can package. This part is classified as Not For New Designs, indicating it has reached end-of-life status. Organizations using this component in active production or maintenance applications require qualified substitute parts that maintain electrical and mechanical compatibility while meeting current design standards.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	10 V
Tolerance	±20%
ESR @ 100 kHz	150 mOhm
Lifetime @ 125°C	3000 Hrs
Operating Temperature Range	-40°C to 125°C
Package Type	Radial, Can - SMD
Case Diameter	10.00 mm
Maximum Height	10.80 mm
Land Size	10.30 mm × 10.30 mm
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the UCZ1A331MCS1GS is determined by the following criteria:

Primary Compatibility Requirements:

Capacitance: 330 µF (exact match required)
Voltage Rating: 10 V minimum (equal or higher voltage rating acceptable)
Tolerance: ±20% (standard for aluminum electrolytic capacitors)
Package: Radial, Can - SMD with 10.00 mm diameter case
Land Size: 10.30 mm × 10.30 mm (PCB footprint compatibility)
Mounting: Surface Mount

Secondary Performance Parameters:

ESR @ 100 kHz: 150 mOhm or lower
Lifetime @ 125°C: 3000 Hrs minimum
Operating Temperature: -40°C to 125°C
RoHS3 Compliance required

Substitute parts are grouped into three categories based on voltage rating:

Category 1 - Direct Voltage Match (10 V): Parts with identical 10 V rating and equivalent electrical performance.

Category 2 - Voltage Upgrade (16 V): Parts with higher voltage rating, maintaining same capacitance and package dimensions. These provide improved reliability margin in applications with voltage transients.

Category 3 - Voltage Upgrade (25 V): Parts with significantly higher voltage rating, suitable for applications requiring enhanced voltage headroom.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	ESR @ 100 kHz	Height (Max)	Product Status	Ripple Current @ 100 kHz
UCZ1A331MCS1GS	Nichicon	330 µF	10 V	150 mOhm	10.80 mm	Not For New Designs	500 mA
EEE-TC1A331P	Panasonic	330 µF	10 V	150 mOhm	10.50 mm	Active	750 mA
EEE-TC1A331V	Panasonic	330 µF	10 V	150 mOhm	10.80 mm	Active	750 mA
EEE-TP1A331AV	Panasonic	330 µF	10 V	150 mOhm	10.80 mm	Active	500 mA
UCZ1C331MCS1GS	Nichicon	330 µF	16 V	150 mOhm	10.80 mm	Not For New Designs	500 mA
EEE-TC1C331P	Panasonic	330 µF	16 V	150 mOhm	10.50 mm	Active	750 mA
16THV330M10X10.5	Rubycon	330 µF	16 V	200 mOhm @ 100 Hz	10.50 mm	Active	500 mA
25TGV330M10X10.5	Rubycon	330 µF	25 V	120 mOhm	10.50 mm	Active	550 mA
25THV330M10X10.5	Rubycon	330 µF	25 V	200 mOhm @ 100 Hz	10.50 mm	Active	500 mA
EEE-TC1E331P	Panasonic	330 µF	25 V	150 mOhm	10.50 mm	Active	750 mA

Engineering Selection Recommendations

For Direct Replacement (10 V Applications):

EEE-TC1A331P and EEE-TC1A331V are the primary substitutes. Both are Panasonic Active products with AEC-Q200 certification, matching the original 10 V rating and 150 mOhm ESR specification. EEE-TC1A331V includes anti-vibration construction and matches the original 10.80 mm height. EEE-TC1A331P offers reduced height (10.50 mm) with higher ripple current capability (750 mA vs. 500 mA).

EEE-TP1A331AV is an alternative with anti-vibration construction, Active status, and AEC-Q200 certification. This part maintains the 10.80 mm height and 150 mOhm ESR but provides 500 mA ripple current.

For Voltage-Upgraded Applications (16 V):

EEE-TC1C331P is the recommended upgrade path. This Panasonic Active product maintains 150 mOhm ESR, provides 16 V rating with improved voltage margin, and includes AEC-Q200 certification. Height is reduced to 10.50 mm with 750 mA ripple current capability.

16THV330M10X10.5 from Rubycon is an alternative with 16 V rating and AEC-Q200 certification. ESR is 200 mOhm at 100 Hz, and ripple current is 500 mA.

For Maximum Voltage Margin (25 V):

EEE-TC1E331P is the optimal choice, offering 25 V rating with 150 mOhm ESR, Active status, AEC-Q200 certification, and 750 mA ripple current capability.

25TGV330M10X10.5 from Rubycon provides 25 V rating with superior ESR performance (120 mOhm) and AEC-Q200 certification, though at 200 mOhm ESR when measured at 100 Hz.

All recommended substitutes are RoHS3 compliant, MSL 1 rated, and maintain the 10.00 mm case diameter and 10.30 mm × 10.30 mm land size for PCB compatibility.

Frequently Asked Questions (FAQ)

Q: Can I use a 16 V or 25 V rated capacitor in place of the 10 V UCZ1A331MCS1GS?

A: Yes. Higher voltage-rated capacitors with identical capacitance, tolerance, and package dimensions are electrically compatible. The circuit will operate normally, as the capacitor will not be stressed beyond its design limits. Voltage rating indicates the maximum voltage the capacitor can safely withstand; operating at lower voltages is within specification.

Q: What is the significance of ESR (Equivalent Series Resistance)?

A: ESR affects ripple current handling and heat generation. Lower ESR values indicate better high-frequency performance. The original part specifies 150 mOhm @ 100 kHz. Substitutes with equal or lower ESR maintain or improve performance. Parts with higher ESR (such as 200 mOhm) are acceptable if ripple current requirements are not exceeded.

Q: Are there height restrictions for PCB layout?

A: The original UCZ1A331MCS1GS has a maximum seated height of 10.80 mm. Most substitutes are available in 10.50 mm height, which is compatible with the same PCB footprint. Verify clearance in your specific application if height-sensitive components are adjacent.

Q: What does AEC-Q200 certification mean?

A: AEC-Q200 is an automotive qualification standard for passive components. Parts bearing this certification have undergone rigorous testing for reliability in automotive environments. All recommended Panasonic and Rubycon substitutes carry AEC-Q200 certification, ensuring suitability for demanding applications.

Q: Why is the original Nichicon UCZ1A331MCS1GS marked "Not For New Designs"?

A: This designation indicates the part has reached end-of-life and is no longer recommended for new product development. Existing inventory may remain available, but long-term supply cannot be guaranteed. Migration to Active-status alternatives ensures design continuity and supply chain stability.

Q: Are all substitutes compatible with the same PCB land pattern?

A: Yes. All listed substitutes maintain the 10.00 mm case diameter and 10.30 mm × 10.30 mm land size, ensuring direct PCB footprint compatibility without layout modifications.

Q: What is the difference between Panasonic TC and TP series?

A: Both are 330 µF aluminum electrolytic capacitors with identical electrical specifications. The TP series includes anti-vibration construction for enhanced mechanical stability in high-vibration environments. Select TP variants if vibration resistance is a design requirement.

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