Equivalent & Substitute Parts for UWT1A331MNR1GS

Part Overview

The UWT1A331MNR1GS is a 330 µF, 10 V aluminum electrolytic capacitor in surface mount radial can package manufactured by Nichicon. This part operates across -55°C to 105°C with a rated lifetime of 1000 hours at 105°C and is classified as obsolete. Due to its obsolete status, equivalent and substitute parts with active product status are necessary for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	10 V
Tolerance	±20%
Operating Temperature Range	-55°C to 105°C
Lifetime @ 105°C	1000 Hrs
Package Type	Radial, Can - SMD
Mounting Type	Surface Mount
Polarization	Polar
RoHS Status	RoHS3 Compliant (for active substitutes)

Substitute Part Grouping Explanation

Substitution for UWT1A331MNR1GS is determined by the following criteria:

Electrical Parameters (Must Match):

Capacitance: 330 µF
Voltage Rating: 10 V (or higher for upgraded variants)
Tolerance: ±20%
Polarization: Polar

Mechanical Parameters (Must Match):

Package: Radial, Can - SMD
Mounting Type: Surface Mount
Land Size: 0.327" L x 0.327" W (8.30mm x 8.30mm)

Allowed Variations:

Lifetime @ 105°C: May increase (1000 Hrs, 2000 Hrs, or 5000 Hrs)
Height: May vary within 0.394" (10.00mm) to 0.413" (10.50mm)
Voltage Rating: May increase above 10 V for upgraded selections
Ripple Current: Varies with series design
Product Status: Active substitutes preferred over obsolete

Substitute parts are grouped into two categories: direct equivalents (same voltage rating) and upgraded variants (higher voltage rating for enhanced design margin).

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Lifetime @ 105°C	Height (Max)	Product Status	RoHS Status	Packaging
UWT1A331MNR1GS	Nichicon	UWT	330 µF	10 V	1000 Hrs	0.394" (10.00mm)	Obsolete	RoHS Non-Compliant	Bulk
UWT1A331MNL1GS	Nichicon	UWT	330 µF	10 V	1000 Hrs	0.394" (10.00mm)	Active	RoHS3 Compliant	Tape & Reel (TR)
UCL1A331MNL1GS	Nichicon	UCL	330 µF	10 V	2000 Hrs	0.394" (10.00mm)	Active	RoHS3 Compliant	Tape & Reel (TR)
UUD1A331MNL1GS	Nichicon	UUD	330 µF	10 V	5000 Hrs	0.413" (10.50mm)	Active	RoHS3 Compliant	Tape & Reel (TR)
UUX1A331MNL6GS	Nichicon	UUX	330 µF	10 V	2000 Hrs	0.413" (10.50mm)	Active	RoHS3 Compliant	Tape & Reel (TR)
UCM1V331MNL1GS	Nichicon	UCM	330 µF	35 V	2000 Hrs	0.413" (10.50mm)	Active	RoHS3 Compliant	Tape & Reel (TR)
UUD1C331MNL1GS	Nichicon	UUD	330 µF	16 V	5000 Hrs	0.413" (10.50mm)	Active	RoHS3 Compliant	Cut Tape (CT) & Digi-Reel®
UUD1E331MNL1GS	Nichicon	UUD	330 µF	25 V	5000 Hrs	0.413" (10.50mm)	Active	RoHS3 Compliant	Tape & Reel (TR)
UUX1C331MNL6GS	Nichicon	UUX	330 µF	16 V	2000 Hrs	0.413" (10.50mm)	Active	RoHS3 Compliant	Tape & Reel (TR)
UWT1C331MNL1GS	Nichicon	UWT	330 µF	16 V	1000 Hrs	0.394" (10.00mm)	Active	RoHS3 Compliant	Cut Tape (CT) & Digi-Reel®
UWT1E331MNL1GS	Nichicon	UWT	330 µF	25 V	1000 Hrs	0.394" (10.00mm)	Active	RoHS3 Compliant	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

Direct Equivalent (Same Voltage, Active Status):

UWT1A331MNL1GS is the primary direct substitute. It maintains identical electrical and mechanical specifications while transitioning from obsolete to active product status with RoHS3 compliance. Packaging changes from bulk to Tape & Reel format.

Enhanced Lifetime Alternatives (Same Voltage):

UCL1A331MNL1GS and UUX1A331MNL6GS provide 2000-hour lifetime ratings. UUD1A331MNL1GS extends to 5000 hours with AEC-Q200 automotive qualification. These are suitable where extended operational life is required without voltage derating.

Upgraded Voltage Variants:

UWT1C331MNL1GS (16 V), UWT1E331MNL1GS (25 V), UUD1C331MNL1GS (16 V), UUD1E331MNL1GS (25 V), UUX1C331MNL6GS (16 V), and UCM1V331MNL1GS (35 V) provide higher voltage ratings for applications requiring increased design margin or operating in elevated voltage environments. All maintain 330 µF capacitance and RoHS3 compliance.

Compliance Considerations:

All active substitutes are RoHS3 compliant. UUD series parts carry AEC-Q200 automotive qualification and REACH Affected status. Selection should account for end-application regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can UWT1A331MNL1GS directly replace UWT1A331MNR1GS?

A: Yes. UWT1A331MNL1GS is a direct electrical and mechanical equivalent with identical 330 µF, 10 V specifications and matching 0.394" height. The primary differences are active product status, RoHS3 compliance, and packaging format (Tape & Reel instead of bulk).

Q: What is the difference between direct equivalents and upgraded variants?

A: Direct equivalents maintain the original 10 V voltage rating. Upgraded variants increase voltage rating to 16 V, 25 V, or 35 V while preserving 330 µF capacitance. Upgraded parts are suitable for circuits where higher voltage margin is beneficial or required.

Q: Are there height restrictions when selecting substitutes?

A: Yes. The original part specifies 0.394" maximum height. UWT and UCL series maintain this dimension. UUD and UUX series increase to 0.413" maximum height. Verify PCB layout clearance before selecting taller variants.

Q: Which substitute offers the longest operational lifetime?

A: UUD series parts (UUD1A331MNL1GS, UUD1C331MNL1GS, UUD1E331MNL1GS) provide 5000-hour lifetime at 105°C, compared to 1000 hours for UWT series and 2000 hours for UCL and UUX series.

Q: What packaging options are available?

A: Tape & Reel (TR) is standard for most active substitutes. Cut Tape (CT) & Digi-Reel® packaging is available for UWT1C331MNL1GS, UWT1E331MNL1GS, and UUD1C331MNL1GS. Verify procurement requirements before selection.

Q: Are automotive-qualified alternatives available?

A: Yes. UUD1A331MNL1GS, UUD1C331MNL1GS, and UUD1E331MNL1GS carry AEC-Q200 automotive qualification with 5000-hour lifetime ratings. UCM1V331MNL1GS also includes AEC-Q200 qualification at 35 V rating.

Q: What is the impact of selecting a higher voltage-rated part?

A: Higher voltage ratings (16 V, 25 V, 35 V) provide increased design margin and improved reliability in circuits subject to voltage transients. Physical dimensions may increase slightly. Electrical performance at the original 10 V operating point remains equivalent.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message