UWT1V331MNR1GS Equivalent & Substitute Parts

Part Overview

The UWT1V331MNR1GS is a 330 µF, 35 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 designed for general purpose applications. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Capacitance	330 µF
Tolerance	±20%
Voltage Rating	35 V
Lifetime @ 105°C	1000 Hrs
Operating Temperature Range	-55°C ~ 105°C
Polarization	Polar
Package Type	Radial, Can - SMD
Size / Dimension	0.394" Dia (10.00mm)
Height - Seated (Max)	0.394" (10.00mm)
Surface Mount Land Size	0.406" L x 0.406" W (10.30mm x 10.30mm)
Mounting Type	Surface Mount
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the UWT1V331MNR1GS is determined by strict equivalence across the following parameters:

Capacitance: 330 µF (exact match required)
Voltage Rating: 35 V (exact match required)
Tolerance: ±20% (exact match required)
Operating Temperature Range: -55°C ~ 105°C (exact match required)
Polarization: Polar (exact match required)
Package Type: Radial, Can - SMD (exact match required)
Physical Dimensions: 0.394" Dia (10.00mm), height and land size compatibility
Mounting Type: Surface Mount (exact match required)

Substitute parts are grouped into two categories:

Direct Equivalents maintain identical electrical and mechanical specifications with the same lifetime rating (1000 Hrs @ 105°C) or higher. These parts are pin-compatible and footprint-compatible with no design modifications required.

Upgraded Alternatives provide enhanced performance characteristics such as extended lifetime (2000 Hrs or 5000 Hrs @ 105°C), improved ripple current handling, lower impedance, or automotive-grade certifications (AEC-Q200). These parts are mechanically compatible but offer superior reliability margins.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	Lifetime @ 105°C	Operating Temp	Size (Dia x H)	Product Status	RoHS Status
UWT1V331MNR1GS	Nichicon	UWT	330 µF	35 V	±20%	1000 Hrs	-55°C ~ 105°C	10.00mm x 10.00mm	Obsolete	RoHS non-compliant
UWT1V331MNL1GS	Nichicon	UWT	330 µF	35 V	±20%	1000 Hrs	-55°C ~ 105°C	10.00mm x 10.00mm	Active	ROHS3 Compliant
UUD1V331MNL1GS	Nichicon	UUD	330 µF	35 V	±20%	5000 Hrs	-55°C ~ 105°C	10.00mm x 10.50mm	Active	ROHS3 Compliant
UCD1V331MNL1GS	Nichicon	UCD	330 µF	35 V	±20%	5000 Hrs	-55°C ~ 105°C	10.00mm x 10.50mm	Active	ROHS3 Compliant
UCL1V331MNL1GS	Nichicon	UCL	330 µF	35 V	±20%	2000 Hrs	-55°C ~ 105°C	10.00mm x 10.00mm	Active	ROHS3 Compliant
UWZ1V331MCL1GS	Nichicon	UWZ	330 µF	35 V	±20%	1000 Hrs	-55°C ~ 105°C	10.00mm x 10.00mm	Active	ROHS3 Compliant
EMVY350ARA331MJA0G	Chemi-Con	Alchip™- MVY	330 µF	35 V	±20%	2000 Hrs	-55°C ~ 105°C	10.00mm x 10.00mm	Active	ROHS3 Compliant
865080557015	Würth Elektronik	WCAP-ASLI	330 µF	35 V	±20%	2000 Hrs	-55°C ~ 105°C	10.00mm x 10.50mm	Active	ROHS3 Compliant
EEE-FK1V331AP	Panasonic Electronic Components	FK	330 µF	35 V	±20%	2000 Hrs	-55°C ~ 105°C	10.00mm x 10.50mm	Active	ROHS3 Compliant
EEE-FK1V331GP	Panasonic Electronic Components	FK	330 µF	35 V	±20%	5000 Hrs	-55°C ~ 105°C	10.00mm x 10.50mm	Active	ROHS3 Compliant
EEE-FP1V331AP	Panasonic Electronic Components	FP	330 µF	35 V	±20%	2000 Hrs	-55°C ~ 105°C	10.00mm x 10.20mm	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (No Design Changes):

UWT1V331MNL1GS is the primary direct equivalent. It maintains identical electrical specifications and physical dimensions as the obsolete UWT1V331MNR1GS while offering active product status and ROHS3 compliance. This part is available in Tape & Reel packaging and is the lowest-risk substitution path.

For Enhanced Reliability (Same Footprint):

UCL1V331MNL1GS and EMVY350ARA331MJA0G both provide doubled lifetime (2000 Hrs @ 105°C) while maintaining the original 10.00mm height. UCL1V331MNL1GS is a Nichicon product with general purpose ratings, while EMVY350ARA331MJA0G is a Chemi-Con alternative. Both are ROHS3 compliant and footprint-compatible.

For Automotive Applications (Extended Lifetime):

UUD1V331MNL1GS, UCD1V331MNL1GS, EEE-FK1V331AP, and EEE-FK1V331GP all carry AEC-Q200 automotive certification with 5000 Hrs @ 105°C lifetime. These parts are suitable for automotive-grade designs. Height increases to 10.50mm require PCB layout verification. UCD1V331MNL1GS offers the highest ripple current capacity (850 mA @ 100 kHz) and lowest impedance (80 mOhms).

For High Temperature Reflow Processes:

UWZ1V331MCL1GS is rated for high temperature reflow applications while maintaining 1000 Hrs @ 105°C lifetime and original dimensions. This part is suitable for designs requiring enhanced thermal processing capability.

For Maximum Performance:

EEE-FP1V331AP provides the lowest ESR specification (60 mOhm @ 100 kHz) and highest ripple current capacity (1.19 A @ 100 kHz) among all substitutes. This part is AEC-Q200 certified and suitable for demanding automotive applications requiring superior high-frequency performance.

Frequently Asked Questions (FAQ)

Q: Can UWT1V331MNL1GS be used as a direct drop-in replacement for UWT1V331MNR1GS?

A: Yes. UWT1V331MNL1GS is electrically and mechanically identical to the obsolete UWT1V331MNR1GS. Both share the same capacitance (330 µF), voltage rating (35 V), tolerance (±20%), lifetime (1000 Hrs @ 105°C), and physical dimensions (10.00mm diameter × 10.00mm height). The primary difference is product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant). No PCB modifications are required.

Q: What is the difference between parts with 10.00mm and 10.50mm heights?

A: The height difference reflects design variations across manufacturers and series. Parts with 10.50mm height (UUD1V331MNL1GS, UCD1V331MNL1GS, 865080557015, EEE-FK1V331AP, EEE-FK1V331GP) are mechanically compatible with the original 10.00mm footprint but require clearance verification on the PCB. If vertical space is constrained, select parts maintaining 10.00mm height: UWT1V331MNL1GS, UCL1V331MNL1GS, EMVY350ARA331MJA0G, UWZ1V331MCL1GS, or EEE-FP1V331AP.

Q: Which substitute offers the best performance for high-frequency ripple current applications?

A: EEE-FP1V331AP provides the highest ripple current capacity at 1.19 A @ 100 kHz with the lowest ESR specification (60 mOhm @ 100 kHz). UCL1V331MNL1GS also offers strong performance at 1.19 A @ 100 kHz with 60 mOhms impedance. Both are suitable for applications requiring superior high-frequency performance.

Q: Are all substitute parts RoHS compliant?

A: All active substitute parts listed are ROHS3 compliant. The original UWT1V331MNR1GS is RoHS non-compliant. If RoHS compliance is a design requirement, any of the listed substitutes satisfy this criterion.

Q: Which substitutes are suitable for automotive applications?

A: Parts carrying AEC-Q200 certification are suitable for automotive applications: UUD1V331MNL1GS, UCD1V331MNL1GS, EEE-FK1V331AP, EEE-FK1V331GP, and EEE-FP1V331AP. These parts meet automotive-grade reliability standards and extended lifetime requirements (2000 Hrs or 5000 Hrs @ 105°C).

Q: What is the difference between 1000 Hrs, 2000 Hrs, and 5000 Hrs lifetime ratings?

A: Lifetime rating indicates the expected operational duration at maximum rated temperature (105°C) before capacitance degradation reaches specified limits. 1000 Hrs represents baseline general purpose rating. 2000 Hrs provides doubled reliability margin. 5000 Hrs provides five-fold reliability margin and is typical for automotive and mission-critical applications. Selection depends on application duty cycle and reliability requirements.

Q: Can parts with different packaging formats (Cut Tape vs. Tape & Reel) be used interchangeably?

A: Yes, from an electrical and mechanical standpoint. Packaging format (Cut Tape, Tape & Reel, Digi-Reel) affects supply chain logistics and handling but does not impact component performance or PCB compatibility. Select packaging based on production volume and assembly equipment requirements.

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