UKA1A331MPD1TD Equivalent & Substitute Parts

Part Overview

The UKA1A331MPD1TD is a 330 µF, 10 V aluminum electrolytic capacitor in radial configuration manufactured by Nichicon. This component is classified as Not For New Designs, indicating it has been superseded in the product lifecycle. The part operates across a temperature range of -55°C to 105°C with a rated lifetime of 2000 hours at 105°C, making it suitable for audio applications requiring stable capacitance performance in moderate voltage environments.

Due to its discontinued status for new designs, equivalent and substitute parts from active product lines or higher-rated variants within compatible specifications are necessary for ongoing system support and new development initiatives.

Key Parameters

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

Substitute Part Grouping Explanation

Substitution of the UKA1A331MPD1TD is determined by the following criteria:

Primary Substitution Parameters:

Capacitance: 330 µF (exact match required)
Tolerance: ±20% (exact match required)
Package Type: Radial, Can (exact match required)
Lead Spacing: 0.138" (4.60 mm) (exact match required)
Physical Dimensions: 0.315" Dia × 0.512" Height (exact match required)
Mounting Type: Through Hole (exact match required)

Secondary Substitution Parameters:

Voltage Rating: Equal to or greater than 10 V
Operating Temperature Range: -55°C to 105°C minimum
Lifetime @ 105°C: Equal to or greater than 2000 hours

Substitute parts are grouped into two categories: Upgrade variants (higher voltage ratings within the same series) and Similar alternatives (equivalent specifications from different series or with enhanced performance characteristics).

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Lifetime @ 105°C	Product Status	Lead Spacing	Height (Max)	Ripple Current @ 120 Hz
UKA1A331MPD1TD	Nichicon	UKA	330 µF	10 V	2000 Hrs	Not For New Designs	0.138" (4.60 mm)	0.512" (13.00 mm)	240 mA
UKA1C331MPD1TD	Nichicon	UKA	330 µF	16 V	2000 Hrs	Not For New Designs	0.138" (4.60 mm)	0.512" (13.00 mm)	265 mA
UKA1E331MPD1TD	Nichicon	UKA	330 µF	25 V	2000 Hrs	Not For New Designs	0.138" (4.60 mm)	0.512" (13.00 mm)	290 mA
UPA1C331MPD1TD	Nichicon	UPA	330 µF	16 V	3000 Hrs	Active	0.138" (4.60 mm)	0.512" (13.00 mm)	409.5 mA
UPA1E331MPD1TD	Nichicon	UPA	330 µF	25 V	3000 Hrs	Active	0.138" (4.60 mm)	0.512" (13.00 mm)	409.5 mA
UPJ1A331MPD1TD	Nichicon	UPJ	330 µF	10 V	3000 Hrs	Not For New Designs	0.138" (4.60 mm)	0.492" (12.50 mm)	350 mA
UPM1A331MPD1TD	Nichicon	UPM	330 µF	10 V	3000 Hrs	Not For New Designs	0.138" (4.60 mm)	0.512" (13.00 mm)	350 mA
UPS1A331MPD1TD	Nichicon	UPS	330 µF	10 V	2000 Hrs	Not For New Designs	0.138" (4.60 mm)	0.512" (13.00 mm)	291.1 mA
UPS1C331MPD1TD	Nichicon	UPS	330 µF	16 V	2000 Hrs	Not For New Designs	0.138" (4.60 mm)	0.512" (13.00 mm)	291.1 mA
UPW1A331MPD1TD	Nichicon	UPW	330 µF	10 V	3000 Hrs	Not For New Designs	0.138" (4.60 mm)	0.512" (13.00 mm)	360.75 mA
UPW1C331MPD1TA	Nichicon	UPW	330 µF	16 V	3000 Hrs	Not For New Designs	0.138" (4.60 mm)	0.512" (13.00 mm)	360.75 mA

Engineering Selection Recommendations

For Active Product Line Replacement: UPA1C331MPD1TD and UPA1E331MPD1TD are the preferred substitutes, as both are classified as Active products. UPA1C331MPD1TD provides a 16 V rating with 3000-hour lifetime at 105°C, while UPA1E331MPD1TD offers 25 V rating with the same extended lifetime. Both maintain identical physical dimensions and lead spacing, ensuring direct PCB compatibility. The UPA series demonstrates higher ripple current capability (409.5 mA @ 120 Hz) compared to the original part (240 mA @ 120 Hz).

For Voltage Margin Enhancement: UKA1C331MPD1TD and UKA1E331MPD1TD provide higher voltage ratings (16 V and 25 V respectively) while maintaining the same 2000-hour lifetime specification. These upgrades are suitable when circuit design allows for increased voltage headroom without component substitution constraints.

For Extended Lifetime Applications: UPW1A331MPD1TD and UPW1C331MPD1TA offer 3000-hour lifetime ratings at 105°C with improved ripple current performance (360.75 mA @ 120 Hz), providing enhanced reliability for long-term deployment scenarios.

Compliance Considerations: All substitute parts maintain ROHS3 compliance and EAR99 classification. UPA1C331MPD1TD and UPA1E331MPD1TD carry REACH Affected status, while UKA and UPS series variants are REACH Unaffected. UPM1A331MPD1TD includes AEC-Q200 automotive qualification.

Frequently Asked Questions (FAQ)

Q: Can UKA1C331MPD1TD or UKA1E331MPD1TD be used as direct replacements for UKA1A331MPD1TD?

A: Yes. Both parts maintain identical physical dimensions (0.315" diameter, 0.512" height), lead spacing (0.138"), and capacitance (330 µF ±20%). The higher voltage ratings (16 V and 25 V) are compatible with circuits designed for 10 V operation, as they provide additional voltage margin without affecting capacitance performance.

Q: What is the difference between UPA1C331MPD1TD and UKA1C331MPD1TD?

A: Both are 330 µF, 16 V, radial aluminum electrolytic capacitors with identical physical dimensions. The primary differences are: UPA1C331MPD1TD is Active (current production), has 3000-hour lifetime at 105°C, and higher ripple current capability (409.5 mA @ 120 Hz). UKA1C331MPD1TD is Not For New Designs, has 2000-hour lifetime, and lower ripple current (265 mA @ 120 Hz).

Q: Are there any height differences between substitute parts?

A: UPJ1A331MPD1TD has a maximum seated height of 0.492" (12.50 mm), which is 0.020" shorter than the original UKA1A331MPD1TD (0.512" / 13.00 mm). All other substitute parts maintain the original 0.512" height specification. Verify PCB clearance requirements before selecting UPJ1A331MPD1TD.

Q: Which substitute part offers the best performance upgrade?

A: UPA1E331MPD1TD provides the most comprehensive upgrade: Active product status, 25 V rating, 3000-hour lifetime at 105°C, and 409.5 mA ripple current capability. It maintains full physical and electrical compatibility while offering extended operational reliability.

Q: Is UPM1A331MPD1TD suitable for automotive applications?

A: UPM1A331MPD1TD includes AEC-Q200 automotive qualification and is rated for automotive use. It provides 330 µF, 10 V, 3000-hour lifetime with 350 mA ripple current at 120 Hz. Physical dimensions and lead spacing are identical to the original part.

Q: What is the impact of different ripple current ratings?

A: Ripple current capacity indicates the maximum AC current the capacitor can handle without exceeding temperature limits. Higher ripple current ratings (such as UPA series at 409.5 mA @ 120 Hz versus original UKA at 240 mA @ 120 Hz) allow operation in higher-current applications. Verify circuit ripple current requirements against the selected part's specification.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts are ROHS3 compliant. However, REACH status varies: UPA and UPM series are REACH Affected, while UKA, UPS, and UPW series are REACH Unaffected. Confirm REACH compliance requirements for your application before final part selection.

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