Equivalent & Substitute Parts for UKA1A331MPD

Part Overview

The Nichicon UKA1A331MPD is a 330 µF, 10 V aluminum electrolytic capacitor in radial, can package format with a rated lifetime of 2000 hours at 105°C. This component is classified as "Not For New Designs," indicating it has been superseded in Nichicon's product portfolio. Finding equivalent or substitute parts is necessary for applications requiring continued supply, design updates, or performance improvements while maintaining mechanical and electrical compatibility.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	10 V
Tolerance	±20%
Lifetime @ 105°C	2000 Hrs
Operating Temperature Range	-55°C ~ 105°C
Polarization	Polar
Package / Case	Radial, Can
Lead Spacing	0.138" (4.60 mm)
Size / Dimension	0.315" Dia (8.00 mm)
Height - Seated (Max)	0.512" (13.00 mm)
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the UKA1A331MPD is determined by the following criteria:

Mandatory Compatibility Parameters:

Capacitance: 330 µF (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)
Package / Case: Radial, Can (exact match required)
Lead Spacing: 0.138" (4.60 mm) (exact match required)
Size / Dimension: 0.315" Dia (8.00 mm) (exact match required)
Height - Seated (Max): 0.512" (13.00 mm) (exact match required)
Mounting Type: Through Hole (exact match required)

Flexible Parameters (May Vary):

Voltage Rating: May be equal or higher than 10 V
Lifetime @ 105°C: May be equal or higher than 2000 Hrs
Operating Temperature Range: Must encompass or match -55°C ~ 105°C
Ripple Current: May vary based on voltage rating and series
Impedance / ESR: May vary based on series and design

Substitutes are grouped into two categories: Upgrade parts (higher voltage rating or longer lifetime) and Similar parts (same or comparable electrical characteristics with different series designation or manufacturer).

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	Lifetime @ 105°C	Product Status	Lead Spacing	Size Dia	Height Max
UKA1A331MPD	Nichicon	UKA	330 µF	10 V	±20%	2000 Hrs	Not For New Designs	0.138" (4.60 mm)	0.315" (8.00 mm)	0.512" (13.00 mm)
UKA1C331MPD	Nichicon	UKA	330 µF	16 V	±20%	2000 Hrs	Not For New Designs	0.138" (4.60 mm)	0.315" (8.00 mm)	0.512" (13.00 mm)
UKA1E331MPD	Nichicon	UKA	330 µF	25 V	±20%	2000 Hrs	Not For New Designs	0.138" (4.60 mm)	0.315" (8.00 mm)	0.512" (13.00 mm)
UPA1C331MPD	Nichicon	UPA	330 µF	16 V	±20%	3000 Hrs	Active	0.138" (4.60 mm)	0.315" (8.00 mm)	0.512" (13.00 mm)
UPA1E331MPD	Nichicon	UPA	330 µF	25 V	±20%	3000 Hrs	Active	0.138" (4.60 mm)	0.315" (8.00 mm)	0.512" (13.00 mm)
UPM1A331MPD	Nichicon	UPM	330 µF	10 V	±20%	3000 Hrs	Not For New Designs	0.138" (4.60 mm)	0.315" (8.00 mm)	0.512" (13.00 mm)
UPS1C331MPD	Nichicon	UPS	330 µF	16 V	±20%	2000 Hrs	Not For New Designs	0.138" (4.60 mm)	0.315" (8.00 mm)	0.512" (13.00 mm)
337KXM016M	Cornell Dubilier / Illinois Capacitor	KXM	330 µF	16 V	±20%	3000 Hrs	Active	0.138" (4.60 mm)	0.315" (8.00 mm)	0.512" (13.00 mm)
337RZM016M	Cornell Dubilier / Illinois Capacitor	RZM	330 µF	16 V	±20%	3000 Hrs	Active	0.138" (4.60 mm)	0.315" (8.00 mm)	0.512" (13.00 mm)
ELXV100ELL331MH12D	Chemi-Con	LXV	330 µF	10 V	±20%	2000 Hrs	Active	0.138" (4.60 mm)	0.315" (8.00 mm)	0.531" (14.60 mm)
ELXY100ELL331MH12D	Chemi-Con	LXY	330 µF	10 V	±20%	3000 Hrs	Active	0.138" (4.60 mm)	0.315" (8.00 mm)	0.531" (14.60 mm)

Engineering Selection Recommendations

For Direct Replacement (Same Voltage, Same Lifetime): UPS1C331MPD is mechanically and electrically compatible with UKA1A331MPD when a 16 V rating is acceptable. Both share identical physical dimensions, lead spacing, and 2000-hour lifetime at 105°C. UPS1C331MPD remains in the "Not For New Designs" status, matching the original part's lifecycle classification.

For Upgraded Performance (Higher Voltage Rating): UKA1C331MPD and UKA1E331MPD provide higher voltage ratings (16 V and 25 V respectively) while maintaining identical physical form factor and 2000-hour lifetime. These upgrades are suitable when circuit design permits higher voltage tolerance and improved safety margin is desired. Both remain "Not For New Designs" status.

For Active Product Line Substitution: UPA1C331MPD and UPA1E331MPD are Active products from Nichicon's UPA series, offering 3000-hour lifetime at 105°C with higher voltage ratings (16 V and 25 V). These represent the recommended path for new designs or long-term supply assurance, as they are currently manufactured and supported.

For Automotive Applications: UPM1A331MPD carries AEC-Q200 certification and is suitable for automotive-grade applications requiring 10 V rating with extended 3000-hour lifetime. ELXV100ELL331MH12D and ELXY100ELL331MH12D from Chemi-Con also carry AEC-Q200 certification and provide automotive-qualified alternatives.

For Alternative Manufacturers: 337KXM016M and 337RZM016M from Cornell Dubilier / Illinois Capacitor provide 16 V, 3000-hour rated alternatives with Active product status. Both maintain identical mechanical compatibility and are suitable for applications where multi-source qualification is required.

Height Consideration: ELXV100ELL331MH12D and ELXY100ELL331MH12D have a maximum seated height of 0.531" (14.60 mm), which is 0.019" taller than the original UKA1A331MPD. Verify PCB layout clearance before substitution.

Frequently Asked Questions (FAQ)

Q: Can I use a higher voltage-rated capacitor as a direct replacement? A: Yes. A capacitor with a higher voltage rating (16 V or 25 V) is electrically compatible with a 10 V circuit. The higher voltage rating provides additional safety margin and does not degrade circuit performance. All substitute parts listed maintain identical physical dimensions and lead spacing for direct PCB mounting.

Q: What is the difference between "Not For New Designs" and "Active" product status? A: "Not For New Designs" indicates the manufacturer has discontinued active development and recommends using newer alternatives for new applications. "Active" status means the part is currently manufactured and supported. For long-term supply security and new designs, Active products are preferred.

Q: Does a longer lifetime (3000 Hrs vs. 2000 Hrs) affect compatibility? A: No. A longer lifetime is a performance improvement and does not affect electrical or mechanical compatibility. Parts with 3000-hour ratings are direct substitutes for 2000-hour rated parts in the same voltage and capacitance class.

Q: Are Chemi-Con ELXV and ELXY series compatible with Nichicon UKA series? A: Yes, mechanically and electrically. Both maintain 330 µF capacitance, ±20% tolerance, identical lead spacing (0.138"), and identical diameter (0.315"). The ELXV and ELXY series have a maximum seated height of 0.531" compared to UKA's 0.512". Verify PCB clearance before substitution.

Q: Can I substitute a 10 V part with a 16 V or 25 V part in an existing design? A: Yes. Higher voltage ratings are compatible with lower voltage circuits. The capacitor will operate safely at voltages below its rating. This substitution is particularly useful when the original 10 V part is unavailable or when design margins need improvement.

Q: What does AEC-Q200 certification mean? A: AEC-Q200 is an automotive industry qualification standard for discrete semiconductors and passive components. Parts carrying this certification (UPM1A331MPD, ELXV100ELL331MH12D, ELXY100ELL331MH12D) meet stringent reliability and performance requirements for automotive applications.

Q: Are all listed substitutes ROHS3 compliant? A: Yes. All substitute parts listed are ROHS3 compliant, matching the original UKA1A331MPD compliance status.

Q: What is the significance of impedance or ESR values? A: Impedance (ESR - Equivalent Series Resistance) affects ripple current handling and high-frequency performance. Lower impedance values indicate better performance at high frequencies. While impedance values vary among substitutes, all listed parts maintain mechanical compatibility and are suitable for the same application categories.

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