Equivalent & Substitute Parts for UKW1C331MPD1TD

Part Overview

The UKW1C331MPD1TD is a 330 µF, 16 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 This component is classified as Not For New Designs, indicating it has been superseded in the product lifecycle.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 is designed for audio applications with a rated lifetime of 2000 hours at 85°C and operates across a temperature range of -40°C to 85°C. Due to its obsolescence status, equivalent and substitute parts with improved performance characteristics or active product status are available to support ongoing production and design requirements.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	16 V
Tolerance	±20%
Lifetime @ Temperature	2000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Ripple Current @ 120 Hz	360 mA
Lead Spacing	0.138" (4.60 mm)
Case Diameter	0.315" (8.00 mm)
Height - Seated (Max)	0.492" (12.50 mm)
Package Type	Radial, Can
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the UKW1C331MPD1TD is determined by the following critical parameters: capacitance value (330 µF), voltage rating (16 V or higher), tolerance (±20%), physical dimensions (lead spacing 0.138", case diameter 0.315"), and mounting configuration (through-hole radial). All substitute parts maintain these core electrical and mechanical specifications to ensure form, fit, and function compatibility.

Substitute parts are grouped into three categories based on performance enhancement:

Direct Equivalents (Same Series Performance): UFW1C331MPD1TD and UVR1C331MPD1TD maintain identical electrical specifications with minor height variations (0.512" vs. 0.492") and equivalent lifetime ratings at 85°C or improved ripple current handling.

Upgraded Performance (Enhanced Thermal & Electrical): UHE1C331MPD1TD, UKA1C331MPD1TD, UPA1C331MPD1TD, UPS1C331MPD1TD, and UPW1C331MPD1TD series offer extended operating temperature ranges (-55°C to 105°C), increased lifetime ratings (2000–7000 hours at 105°C), and improved ripple current capacity. These parts are suitable for applications requiring higher thermal stability and longer service life.

Voltage-Upgraded Variants: UKA1E331MPD1TD and UPA1E331MPD1TD provide 25 V rating while maintaining 330 µF capacitance, enabling use in circuits with higher voltage headroom.

Parameter Comparison

Part Number	Series	Capacitance	Voltage	Lifetime @ Temp	Operating Temp Range	Ripple Current @ 120 Hz	Height (Max)	Product Status	Inventory
UKW1C331MPD1TD	UKW	330 µF	16 V	2000 Hrs @ 85°C	-40°C ~ 85°C	360 mA	0.492" (12.50 mm)	Not For New Designs	2773 Pcs
UFW1C331MPD1TD	UFW	330 µF	16 V	2000 Hrs @ 85°C	-40°C ~ 85°C	360 mA	0.512" (13.00 mm)	Not For New Designs	1017 Pcs
UVR1C331MPD1TD	UVR	330 µF	16 V	2000 Hrs @ 85°C	-40°C ~ 85°C	370 mA	0.512" (13.00 mm)	Not For New Designs	1792 Pcs
UHE1C331MPD1TD	UHE	330 µF	16 V	7000 Hrs @ 105°C	-40°C ~ 105°C	448 mA	0.512" (13.00 mm)	Not For New Designs	1934 Pcs
UKA1C331MPD1TD	UKA	330 µF	16 V	2000 Hrs @ 105°C	-55°C ~ 105°C	265 mA	0.512" (13.00 mm)	Not For New Designs	1595 Pcs
UKA1E331MPD1TD	UKA	330 µF	25 V	2000 Hrs @ 105°C	-55°C ~ 105°C	290 mA	0.512" (13.00 mm)	Not For New Designs	4768 Pcs
UPA1C331MPD1TD	UPA	330 µF	16 V	3000 Hrs @ 105°C	-55°C ~ 105°C	409.5 mA	0.512" (13.00 mm)	Active	806 Pcs
UPA1E331MPD1TD	UPA	330 µF	25 V	3000 Hrs @ 105°C	-55°C ~ 105°C	409.5 mA	0.512" (13.00 mm)	Active	5936 Pcs
UPS1C331MPD1TD	UPS	330 µF	16 V	2000 Hrs @ 105°C	-55°C ~ 105°C	291.1 mA	0.512" (13.00 mm)	Not For New Designs	14638 Pcs
UPW1C331MPD1TA	UPW	330 µF	16 V	3000 Hrs @ 105°C	-55°C ~ 105°C	360.75 mA	0.512" (13.00 mm)	Not For New Designs	2801 Pcs
UPW1C331MPD1TD	UPW	330 µF	16 V	3000 Hrs @ 105°C	-55°C ~ 105°C	360.75 mA	0.512" (13.00 mm)	Not For New Designs	39750 Pcs

Engineering Selection Recommendations

For Direct Replacement (Same Performance Profile): UFW1C331MPD1TD and UVR1C331MPD1TD are direct functional equivalents. Both maintain 330 µF capacitance, 16 V rating, and 2000-hour lifetime at 85°C. The primary difference is case height (0.512" vs. 0.492"), which must be verified against PCB layout constraints. Both are ROHS3 compliant and suitable for audio applications where thermal performance is not a limiting factor.

For Enhanced Thermal Performance: UPA1C331MPD1TD and UPW1C331MPD1TD are recommended for applications requiring extended operating temperature range (-55°C to 105°C) and improved lifetime (3000 hours at 105°C). UPA1C331MPD1TD carries Active product status, making it the preferred choice for new production. UPW1C331MPD1TD offers the highest inventory availability (39,750 pcs) and is suitable for high-volume applications. Both provide superior ripple current handling (409.5 mA and 360.75 mA respectively at 120 Hz).

For Maximum Thermal Stability: UHE1C331MPD1TD delivers the longest rated lifetime (7000 hours at 105°C) and highest ripple current capacity (448 mA at 120 Hz), suitable for demanding audio and general-purpose applications with stringent reliability requirements.

For Voltage Margin Enhancement: UKA1E331MPD1TD and UPA1E331MPD1TD provide 25 V rating while maintaining 330 µF capacitance. These are applicable when circuit design requires additional voltage headroom or when operating conditions approach the 16 V limit. UPA1E331MPD1TD carries Active status with substantial inventory (5,936 pcs).

All substitute parts are ROHS3 compliant and maintain identical lead spacing (0.138") and case diameter (0.315"), ensuring mechanical compatibility with existing PCB designs.

Frequently Asked Questions (FAQ)

Q: Can UFW1C331MPD1TD directly replace UKW1C331MPD1TD? A: Yes, with one consideration. Both parts share identical electrical specifications (330 µF, 16 V, ±20%, 2000 Hrs @ 85°C). The UFW variant has a maximum seated height of 0.512" compared to 0.492" for the UKW. Verify that the additional 0.020" height does not conflict with PCB clearance or component placement constraints.

Q: What is the primary advantage of UPA1C331MPD1TD over UKW1C331MPD1TD? A: UPA1C331MPD1TD offers three key improvements: (1) Active product status versus Not For New Designs, (2) extended operating temperature range (-55°C to 105°C vs. -40°C to 85°C), and (3) increased lifetime rating (3000 hours at 105°C vs. 2000 hours at 85°C). These enhancements provide better long-term reliability and thermal margin for production applications.

Q: Are all substitute parts through-hole radial configuration? A: Yes. All listed substitute parts maintain through-hole radial mounting with 0.138" lead spacing and 0.315" case diameter, ensuring form and fit compatibility with existing PCB designs.

Q: When should UHE1C331MPD1TD be selected? A: UHE1C331MPD1TD is specified for applications requiring maximum thermal stability and extended service life. Its 7000-hour lifetime at 105°C and 448 mA ripple current capacity make it suitable for high-reliability audio systems and general-purpose circuits operating continuously at elevated temperatures.

Q: What is the difference between UPA1C331MPD1TD and UPW1C331MPD1TD? A: Both parts share identical electrical specifications (330 µF, 16 V, 3000 Hrs @ 105°C, -55°C to 105°C). The primary difference is inventory availability: UPW1C331MPD1TD has 39,750 pcs in stock versus 806 pcs for UPA1C331MPD1TD. For high-volume production, UPW1C331MPD1TD is the preferred choice. For new designs, UPA1C331MPD1TD carries Active status.

Q: Can a 25 V rated part (UKA1E331MPD1TD or UPA1E331MPD1TD) be used in a 16 V circuit? A: Yes. A higher voltage-rated capacitor is electrically compatible with lower-voltage circuits. The 25 V variants provide additional voltage margin and are suitable for applications where circuit voltage may approach or occasionally exceed nominal 16 V levels. UPA1E331MPD1TD is preferred due to Active product status and higher inventory (5,936 pcs).

Q: Are all parts RoHS compliant? A: Yes. All listed parts are ROHS3 compliant. UHE1C331MPD1TD and UPA1C331MPD1TD are REACH Affected; all others are REACH Unaffected. Verify REACH compliance requirements for your specific application and supply chain.

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