UCZ1C331MCS1GS Equivalent & Substitute Parts

Part Overview

The UCZ1C331MCS1GS is a 330 µF, 16 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 This component is classified as Not For New Designs, indicating it has been superseded in Nichicon's product line. Finding equivalent and substitute parts is necessary for ongoing production support, legacy system maintenance, and design flexibility when the primary part becomes unavailable or when performance improvements are required.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	16 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
Physical Dimensions	10.00 mm Dia × 10.80 mm Height (Max)
Surface Mount Land Size	10.30 mm × 10.30 mm
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the UCZ1C331MCS1GS is determined by the following critical parameters:

Primary Substitution Criteria:

Capacitance: 330 µF (exact match required)
Voltage Rating: 16 V minimum (higher voltage ratings are acceptable upgrades)
Tolerance: ±20% (standard tolerance maintained)
Package Type: Radial, Can - SMD (physical and electrical compatibility)
Physical Dimensions: 10.00 mm diameter with compatible height (10.50 mm to 10.80 mm acceptable)
Surface Mount Land Size: 10.30 mm × 10.30 mm (PCB footprint compatibility)
Operating Temperature: -40°C to 125°C (full range required)
Polarization: Polar (electrolytic type maintained)

Substitution Categories:

Direct Equivalents (16 V Rating): Parts maintaining the original 16 V voltage specification with identical or superior electrical performance characteristics.

Upgraded Substitutes (25 V Rating): Parts with increased voltage rating (25 V) that provide enhanced safety margin and improved performance while maintaining all other critical parameters. These are suitable for applications where higher voltage headroom is beneficial.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	ESR @ 100 kHz	Lifetime @ 125°C	Height (Max)	Product Status	Ratings
UCZ1C331MCS1GS	Nichicon	330 µF	16 V	150 mOhm	3000 Hrs	10.80 mm	Not For New Designs	—
16THV330M10X10.5	Rubycon	330 µF	16 V	200 mOhm @ 100 Hz	3000 Hrs	10.50 mm	Active	AEC-Q200
EEE-TC1C331P	Panasonic	330 µF	16 V	150 mOhm	3000 Hrs	10.50 mm	Active	AEC-Q200
EEE-TC1C331V	Panasonic	330 µF	16 V	150 mOhm	3000 Hrs	10.80 mm	Active	AEC-Q200
EEE-TP1C331AV	Panasonic	330 µF	16 V	150 mOhm	3000 Hrs	10.80 mm	Active	AEC-Q200
25TGV330M10X10.5	Rubycon	330 µF	25 V	120 mOhm	3000 Hrs	10.50 mm	Active	AEC-Q200
25THV330M10X10.5	Rubycon	330 µF	25 V	200 mOhm @ 100 Hz	3000 Hrs	10.50 mm	Active	AEC-Q200
EEE-TC1E331P	Panasonic	330 µF	25 V	150 mOhm	3000 Hrs	10.50 mm	Active	AEC-Q200

Engineering Selection Recommendations

For Direct Replacement (16 V Applications):

EEE-TC1C331P (Panasonic) is the primary direct substitute. It maintains identical electrical specifications (330 µF, 16 V, 150 mOhm ESR, 3000 Hrs @ 125°C) with Active product status and AEC-Q200 automotive qualification. The reduced height (10.50 mm vs. 10.80 mm) provides improved PCB layout flexibility.

EEE-TC1C331V (Panasonic) offers identical electrical performance with matching height (10.80 mm) and includes anti-vibration characteristics. Active status and AEC-Q200 rating ensure long-term availability and automotive reliability.

EEE-TP1C331AV (Panasonic) provides equivalent performance with anti-vibration features and Active product status. The TP series designation indicates enhanced mechanical robustness suitable for high-vibration environments.

16THV330M10X10.5 (Rubycon) is an alternative direct substitute with Active status and AEC-Q200 qualification. ESR specification is measured at 100 Hz rather than 100 kHz; this part is suitable where lower frequency ripple current performance is the primary concern.

For Upgraded Applications (25 V Voltage Headroom):

25TGV330M10X10.5 (Rubycon) provides superior ESR performance (120 mOhm) with increased voltage rating (25 V). Active status and AEC-Q200 qualification support long-term production use. This upgrade is recommended for applications requiring improved transient response or where higher voltage margin enhances system reliability.

EEE-TC1E331P (Panasonic) offers 25 V rating with matched ESR (150 mOhm) and identical thermal lifetime. Active status and AEC-Q200 qualification ensure compatibility with automotive and high-temperature reflow applications.

25THV330M10X10.5 (Rubycon) provides 25 V upgrade with Active status and AEC-Q200 rating. ESR specification at 100 Hz makes this suitable for applications prioritizing low-frequency ripple current performance.

All substitute parts maintain ROHS3 compliance, Moisture Sensitivity Level 1, and identical surface mount land size (10.30 mm × 10.30 mm) for direct PCB compatibility.

Frequently Asked Questions (FAQ)

Q: Can I use a 25 V rated capacitor in place of the 16 V UCZ1C331MCS1GS?

A: Yes. A 25 V rated capacitor with identical capacitance (330 µF) and tolerance (±20%) is a valid upgrade substitute. The higher voltage rating provides additional safety margin and does not degrade circuit performance. All physical dimensions and land sizes remain compatible.

Q: What is the difference between ESR measured at 100 Hz versus 100 kHz?

A: ESR varies with frequency. The 16THV330M10X10.5 specifies ESR at 100 Hz (200 mOhm), while the UCZ1C331MCS1GS specifies ESR at 100 kHz (150 mOhm). For applications with high-frequency ripple current requirements, compare ESR values at the same frequency. For general-purpose applications, both specifications indicate acceptable performance.

Q: Are all substitute parts AEC-Q200 qualified?

A: All substitute parts listed carry AEC-Q200 automotive qualification except the original UCZ1C331MCS1GS, which has no specified rating. AEC-Q200 qualification indicates compliance with automotive reliability and quality standards.

Q: Will the reduced height (10.50 mm) of some substitutes affect PCB assembly?

A: No. The reduced height (10.50 mm maximum) compared to the original (10.80 mm maximum) provides improved clearance and does not create assembly conflicts. The surface mount land size (10.30 mm × 10.30 mm) remains identical across all parts, ensuring direct PCB footprint compatibility.

Q: What does "Not For New Designs" mean for the UCZ1C331MCS1GS?

A: This designation indicates the part has been superseded in Nichicon's product line and is no longer recommended for new circuit designs. It remains available for legacy system support and ongoing production of existing designs. For new designs, select from the Active status substitutes listed.

Q: Can I mix different substitute parts in the same circuit?

A: Yes, provided all parts meet the circuit's electrical requirements (capacitance, voltage, ESR, ripple current). Mixing parts from different manufacturers is acceptable as long as each part individually satisfies the design specifications. Verify ripple current ratings at the operating frequency for your specific application.

Q: What is the significance of anti-vibration designation in EEE-TC1C331V and EEE-TP1C331AV?

A: Anti-vibration designation indicates enhanced mechanical construction to withstand high-vibration environments. These parts are suitable for automotive and industrial applications subject to mechanical stress. For standard applications, non-anti-vibration equivalents provide identical electrical performance.

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