UUD1A331MNR1GS Equivalent & Substitute Parts

Part Overview

The UUD1A331MNR1GS is a 330 µF, 10 V aluminum electrolytic capacitor in surface mount radial can package manufactured by Nichicon. This component is classified as obsolete, with 778 pieces available in current inventory. The part is designed for automotive applications and meets AEC-Q200 qualification standards. Due to its obsolete status, equivalent and substitute parts from active product lines are necessary for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	10 V
Tolerance	±20%
Lifetime @ Temperature	5000 Hrs @ 105°C
Operating Temperature Range	-55°C ~ 105°C
Polarization	Polar
Package Type	Radial, Can - SMD
Physical Dimensions	0.315" Dia (8.00mm) × 0.413" Height (10.50mm)
Surface Mount Land Size	0.327" L × 0.327" W (8.30mm × 8.30mm)
Mounting Type	Surface Mount
Ripple Current @ 120 Hz	225 mA
Ripple Current @ 100 kHz	450 mA
Impedance	170 mOhms
Ratings	AEC-Q200
Applications	Automotive

Substitute Part Grouping Explanation

Substitution of the UUD1A331MNR1GS is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters for Direct Substitution:

Capacitance: 330 µF (exact match required)
Voltage Rating: 10 V (minimum; higher voltage ratings are acceptable upgrades)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)
Package Type: Radial, Can - SMD (exact match required)
Physical Dimensions: 0.315" Dia (8.00mm) × 0.413" Height (10.50mm) (exact match required)
Surface Mount Land Size: 0.327" L × 0.327" W (8.30mm × 8.30mm) (exact match required)
Lifetime @ Temperature: 5000 Hrs @ 105°C (exact match required)
Operating Temperature Range: -55°C ~ 105°C (exact match required)

Acceptable Variations:

Voltage Rating: Parts rated at 16 V or 25 V are acceptable upgrades for 10 V applications
Ripple Current: Higher ripple current ratings provide enhanced performance margin
Impedance: Lower impedance values indicate improved electrical performance
Packaging Format: Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® are interchangeable for procurement purposes
RoHS Compliance: ROHS3 compliant parts are preferred over non-compliant alternatives
Product Status: Active status parts are preferred over obsolete parts

Substitute parts are grouped into three categories: Direct Manufacturer Equivalents (same electrical specifications, different packaging or compliance status), Upgrade Parts (higher voltage rating with same capacitance and physical dimensions), and Parametric Equivalents (same electrical specifications from alternative manufacturers).

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lifetime @ 105°C	Ripple Current @ 120 Hz	Ripple Current @ 100 kHz	Impedance	Product Status	RoHS Status	Packaging
UUD1A331MNR1GS	Nichicon	330 µF	10 V	±20%	5000 Hrs	225 mA	450 mA	170 mOhms	Obsolete	Non-compliant	Bulk
UUD1A331MNL1GS	Nichicon	330 µF	10 V	±20%	5000 Hrs	225 mA	450 mA	170 mOhms	Active	ROHS3 Compliant	Tape & Reel
UCD1A331MNL1GS	Nichicon	330 µF	10 V	±20%	5000 Hrs	300 mA	600 mA	160 mOhms	Active	ROHS3 Compliant	Tape & Reel
UCD1C331MNL1GS	Nichicon	330 µF	16 V	±20%	5000 Hrs	300 mA	600 mA	160 mOhms	Active	ROHS3 Compliant	Cut Tape & Digi-Reel
UCD1E331MNL1GS	Nichicon	330 µF	25 V	±20%	5000 Hrs	300 mA	600 mA	160 mOhms	Active	ROHS3 Compliant	Tape & Reel
865060253007	Würth Elektronik	330 µF	10 V	±20%	5000 Hrs	325 mA	500 mA	170 mOhms	Active	ROHS3 Compliant	Tape & Reel
865060353008	Würth Elektronik	330 µF	16 V	±20%	5000 Hrs	357.5 mA	550 mA	170 mOhms	Active	ROHS3 Compliant	Tape & Reel
865060453008	Würth Elektronik	330 µF	25 V	±20%	5000 Hrs	390 mA	600 mA	170 mOhms	Active	ROHS3 Compliant	Tape & Reel
EEE-FK1A331GP	Panasonic Electronic Components	330 µF	10 V	±20%	5000 Hrs	450 mA	600 mA	160 mOhms	Active	ROHS3 Compliant	Tape & Reel
EMZL100ARA331MHA0G	Chemi-Con	330 µF	10 V	±20%	5000 Hrs	300 mA	600 mA	160 mOhms	Active	ROHS3 Compliant	Tape & Reel
EXV337M010S9MAA	KEMET	330 µF	10 V	±20%	5000 Hrs	420 mA	600 mA	160 mOhms	Active	ROHS3 Compliant	Tape & Reel

Engineering Selection Recommendations

Direct Manufacturer Equivalent (Nichicon UUD Series): UUD1A331MNL1GS is the direct equivalent from Nichicon's active product line. This part maintains identical electrical specifications and physical dimensions while offering ROHS3 compliance and active product status. Packaging is available in Tape & Reel format for automated assembly processes.

Parametric Equivalent with Enhanced Performance (Nichicon UCD Series): UCD1A331MNL1GS provides identical capacitance and voltage rating with improved electrical performance: 33% higher ripple current capability at both 120 Hz and 100 kHz, and 6% lower impedance. This part is suitable for applications requiring enhanced thermal or electrical margin. The UCD series offers higher voltage ratings (16 V and 25 V) as upgrade options for designs requiring additional voltage headroom.

Alternative Manufacturer Equivalents: Würth Elektronik (865060253007), Panasonic (EEE-FK1A331GP), Chemi-Con (EMZL100ARA331MHA0G), and KEMET (EXV337M010S9MAA) all provide 330 µF, 10 V equivalents with identical physical dimensions and ROHS3 compliance. These parts offer varying ripple current and impedance characteristics within acceptable engineering tolerances. All alternative manufacturers maintain the same 5000-hour lifetime rating at 105°C and -55°C to 105°C operating temperature range.

Upgrade Options (Higher Voltage Rating): UCD1C331MNL1GS (16 V) and UCD1E331MNL1GS (25 V) from Nichicon, along with Würth Elektronik 865060353008 (16 V) and 865060453008 (25 V), are suitable upgrades for applications where higher voltage margin is required. These parts maintain identical physical dimensions and capacitance while providing enhanced voltage headroom and improved ripple current performance.

All recommended substitutes maintain AEC-Q200 automotive qualification, ROHS3 compliance, and the required 5000-hour lifetime specification at 105°C.

Frequently Asked Questions (FAQ)

Q: Can UUD1A331MNL1GS directly replace UUD1A331MNR1GS? A: Yes. UUD1A331MNL1GS is the direct equivalent from Nichicon's active product line. Both parts share identical electrical specifications (330 µF, 10 V, ±20%), physical dimensions (8.00mm diameter × 10.50mm height), and surface mount land pattern (8.30mm × 8.30mm). The primary difference is packaging format (Tape & Reel versus bulk) and RoHS compliance status.

Q: What is the difference between the UUD and UCD series? A: The UUD series is Nichicon's legacy line (now obsolete for the 10 V rating). The UCD series is the current active equivalent with improved electrical performance: higher ripple current ratings and lower impedance. Both series maintain identical physical dimensions and are pin-compatible for PCB assembly.

Q: Can I use a 16 V or 25 V rated capacitor in place of the 10 V part? A: Yes. Higher voltage-rated capacitors are acceptable substitutes for lower voltage applications. UCD1C331MNL1GS (16 V) and UCD1E331MNL1GS (25 V) provide additional voltage margin while maintaining identical capacitance, physical dimensions, and thermal characteristics. This approach is common in automotive designs where voltage headroom improves reliability.

Q: Are Würth Elektronik, Panasonic, Chemi-Con, and KEMET parts interchangeable? A: Yes, within engineering tolerances. All parametric equivalents maintain the same 330 µF capacitance, 10 V voltage rating, ±20% tolerance, 5000-hour lifetime at 105°C, and identical physical dimensions. Minor variations in ripple current and impedance are within acceptable ranges for most applications. Verify specific design requirements before substitution.

Q: What does AEC-Q200 qualification mean? A: AEC-Q200 is the automotive electronics council standard for aluminum electrolytic capacitors. All recommended substitutes maintain this qualification, ensuring suitability for automotive applications and compliance with industry reliability standards.

Q: Does RoHS compliance affect electrical performance? A: No. ROHS3 compliance indicates the absence of restricted substances (lead, cadmium, mercury, etc.) but does not alter electrical characteristics. All ROHS3 compliant substitutes maintain identical capacitance, voltage rating, and thermal performance as the original part.

Q: What is the significance of impedance and ripple current ratings? A: Impedance and ripple current determine the capacitor's ability to handle AC ripple voltage in power supply circuits. Lower impedance and higher ripple current ratings indicate better performance under transient conditions. Substitutes with improved ratings provide additional design margin without affecting basic functionality.

Q: Can I mix packaging formats (Tape & Reel, Cut Tape, bulk) in production? A: Packaging format affects procurement and assembly processes but not electrical performance. Tape & Reel and Cut Tape & Digi-Reel formats are suitable for automated pick-and-place assembly. Bulk packaging is suitable for manual assembly or reel-fed systems. Select packaging based on manufacturing process requirements.

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