UWS1C331MC1GS Equivalent & Substitute Parts

Part Overview

The UWS1C331MC1GS is a 330 µF, 16 V aluminum electrolytic capacitor in surface mount radial can package manufactured by Nichicon. This component is classified as obsolete, with a rated lifetime of 2000 hours at 85°C and operating temperature range of -40°C to 85°C. Due to its obsolete status and limited availability, equivalent and substitute parts from active product lines are necessary for new designs and ongoing production support.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	16 V
Tolerance	±20%
Package Type	Radial, Can - SMD
Size / Dimension	0.315" Dia (8.00mm)
Height - Seated (Max)	0.406" (10.30mm)
Surface Mount Land Size	0.327" L x 0.327" W (8.30mm x 8.30mm)
Mounting Type	Surface Mount
Polarization	Polar
Operating Temperature	-40°C ~ 85°C
Lifetime @ Temperature	2000 Hrs @ 85°C
Ripple Current @ 120 Hz	270 mA
Ripple Current @ 10 kHz	351 mA
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the UWS1C331MC1GS is determined by the following mandatory parameters:

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 form factor)
Surface Mount Land Size: 0.327" L x 0.327" W (8.30mm x 8.30mm) (PCB compatibility)
Mounting Type: Surface Mount (assembly compatibility)
Polarization: Polar (electrical polarity requirement)

Substitute parts are grouped into two categories:

Direct Substitutes (16 V Rating): Parts maintaining the original 16 V voltage specification with equivalent or improved electrical performance characteristics.

Upgrade Substitutes (25 V Rating): Parts with increased voltage rating (25 V) that provide enhanced voltage margin while maintaining identical capacitance, tolerance, and physical dimensions. These are suitable for applications where higher voltage headroom is beneficial.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Capacitance	Voltage	Lifetime @ Temp	Operating Temp Range	Height (Max)	Ripple Current @ 120 Hz	Ripple Current @ 100 kHz	Product Status
UWS1C331MC1GS	Nichicon	UWS	330 µF	16 V	2000 Hrs @ 85°C	-40°C ~ 85°C	0.406" (10.30mm)	270 mA	351 mA @ 10 kHz	Obsolete
UCD1C331MNL1GS	Nichicon	UCD	330 µF	16 V	5000 Hrs @ 105°C	-55°C ~ 105°C	0.413" (10.50mm)	300 mA	600 mA @ 100 kHz	Active
UCL1C331MNL1GS	Nichicon	UCL	330 µF	16 V	2000 Hrs @ 105°C	-55°C ~ 105°C	0.394" (10.00mm)	425 mA	850 mA @ 100 kHz	Active
UCD1E331MNL1GS	Nichicon	UCD	330 µF	25 V	5000 Hrs @ 105°C	-55°C ~ 105°C	0.413" (10.50mm)	300 mA	600 mA @ 100 kHz	Active
UCL1E331MNL1GS	Nichicon	UCL	330 µF	25 V	2000 Hrs @ 105°C	-55°C ~ 105°C	0.394" (10.00mm)	425 mA	850 mA @ 100 kHz	Active
AVE337M16F24T-F	Cornell Dubilier Electronics (CDE)	AVE	330 µF	16 V	2000 Hrs @ 85°C	-40°C ~ 85°C	0.394" (10.00mm)	252 mA	315 mA @ 10 kHz	Obsolete
EEE-FK1C331AP	Panasonic Electronic Components	FK	330 µF	16 V	2000 Hrs @ 105°C	-55°C ~ 105°C	0.413" (10.50mm)	390 mA	600 mA @ 100 kHz	Active
865060353008	Würth Elektronik	WCAP-ASLL	330 µF	16 V	5000 Hrs @ 105°C	-55°C ~ 105°C	0.413" (10.50mm)	357.5 mA	550 mA @ 100 kHz	Active
865060453008	Würth Elektronik	WCAP-ASLL	330 µF	25 V	5000 Hrs @ 105°C	-55°C ~ 105°C	0.413" (10.50mm)	390 mA	600 mA @ 100 kHz	Active
865080353014	Würth Elektronik	WCAP-ASLI	330 µF	16 V	2000 Hrs @ 105°C	-55°C ~ 105°C	0.413" (10.50mm)	357.5 mA	550 mA @ 100 kHz	Active
865080453014	Würth Elektronik	WCAP-ASLI	330 µF	25 V	2000 Hrs @ 105°C	-55°C ~ 105°C	0.413" (10.50mm)	370.5 mA	570 mA @ 100 kHz	Active

Engineering Selection Recommendations

For Direct 16 V Substitution:

The Nichicon UCL1C331MNL1GS offers the most compact height (0.394" / 10.00mm) while maintaining 2000-hour lifetime at 105°C with extended operating temperature range (-55°C to 105°C). This part is active and provides superior ripple current handling (425 mA @ 120 Hz, 850 mA @ 100 kHz) compared to the original UWS1C331MC1GS.

The Panasonic EEE-FK1C331AP is rated for automotive applications with AEC-Q200 compliance and provides 2000-hour lifetime at 105°C with robust ripple current performance (390 mA @ 120 Hz, 600 mA @ 100 kHz).

The Würth Elektronik 865060353008 (WCAP-ASLL series) offers extended 5000-hour lifetime at 105°C with active product status and improved ripple current characteristics (357.5 mA @ 120 Hz, 550 mA @ 100 kHz).

For Voltage-Upgraded Substitution (25 V):

The Nichicon UCD1E331MNL1GS provides 5000-hour lifetime at 105°C with automotive-grade AEC-Q200 rating and extended temperature range. The Würth Elektronik 865060453008 (WCAP-ASLL series) offers equivalent 5000-hour lifetime at 105°C with active status.

All substitute parts maintain identical capacitance (330 µF), tolerance (±20%), and surface mount land size (0.327" L x 0.327" W / 8.30mm x 8.30mm) for direct PCB compatibility.

Frequently Asked Questions (FAQ)

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

A: Yes. A 25 V rated capacitor is electrically compatible with a 16 V circuit. The higher voltage rating provides additional voltage margin and does not affect circuit operation. Physical dimensions remain identical, ensuring PCB compatibility.

Q: What is the significance of lifetime rating differences (2000 Hrs vs. 5000 Hrs @ 105°C)?

A: Lifetime rating indicates the expected operational duration at the specified temperature. Parts with 5000-hour ratings provide extended service life under thermal stress. Selection depends on application requirements and expected operating conditions.

Q: Are there height differences between substitute parts?

A: Yes. The original UWS1C331MC1GS has a maximum seated height of 0.406" (10.30mm). Substitute parts range from 0.394" (10.00mm) to 0.413" (10.50mm). Verify PCB clearance requirements before selection. Taller parts (0.413") may require design verification in space-constrained applications.

Q: What does AEC-Q200 rating indicate?

A: AEC-Q200 is an automotive qualification standard. Parts bearing this rating (Nichicon UCD series, Panasonic EEE-FK1C331AP) meet automotive reliability and performance requirements and are suitable for automotive applications.

Q: Do all substitute parts have identical ripple current ratings?

A: No. Ripple current ratings vary across manufacturers and series. The original part handles 270 mA @ 120 Hz. Substitute parts range from 252 mA to 425 mA @ 120 Hz. Higher ripple current capability indicates better thermal performance under AC stress. Select based on circuit ripple current requirements.

Q: What is the difference between WCAP-ASLL and WCAP-ASLI series from Würth Elektronik?

A: Both are aluminum electrolytic capacitor series with identical electrical specifications for this capacitance and voltage combination. WCAP-ASLL (865060353008, 865060453008) offers 5000-hour lifetime at 105°C. WCAP-ASLI (865080353014, 865080453014) offers 2000-hour lifetime at 105°C. Selection depends on required service life.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All active substitute parts listed carry RoHS3 compliance certification, meeting environmental and material restriction requirements for modern electronics manufacturing.

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