UVR1H331MPD1TD Equivalent & Substitute Parts

Part Overview

The UVR1H331MPD1TD is a 330 µF, 50 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 This component is classified as not for new designs, indicating it has been superseded in the manufacturer's product line. Finding equivalent and substitute parts is necessary to support existing designs, facilitate production continuity, and identify functionally compatible alternatives from active product lines.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	50 V
Tolerance	±20%
Package Type	Radial, Can
Lead Spacing	0.197" (5.00 mm)
Diameter	0.394" (10.00 mm)
Height	0.689" (17.50 mm)
Mounting Type	Through Hole
Lifetime @ Temperature	2000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Ripple Current @ 120 Hz	590 mA
Ripple Current @ 10 kHz	885 mA
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the UVR1H331MPD1TD is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters (Must Match):

Capacitance: 330 µF
Voltage Rating: 50 V
Tolerance: ±20%
Package Type: Radial, Can
Lead Spacing: 0.197" (5.00 mm)
Diameter: 0.394" (10.00 mm)
Mounting Type: Through Hole

Allowable Variations:

Height: ±0.020" tolerance acceptable (range 0.669" to 0.689")
Lifetime @ Temperature: Equal or greater duration acceptable
Operating Temperature Range: Equal or extended range acceptable
Ripple Current: Equal or greater capacity acceptable

Parts are grouped into three categories based on substitution relationship:

Upgrade Parts: Newer series from the same or equivalent manufacturers with improved specifications or extended temperature ratings while maintaining all critical parameters.

Parametric Equivalents: Parts from different manufacturers meeting identical electrical and mechanical specifications.

Direct Equivalents: Parts with identical specifications and active product status.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	Lifetime @ Temp	Operating Temp Range	Height (Max)	Ripple Current @ 120 Hz	Ripple Current @ 10/100 kHz	Product Status	Inventory
UVR1H331MPD1TD	Nichicon	UVR	330 µF	50 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.689"	590 mA	885 mA @ 10 kHz	Not For New Designs	11119 Pcs
UFW1H331MPD1TD	Nichicon	UFW	330 µF	50 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.689"	570 mA	855 mA @ 10 kHz	Not For New Designs	1059 Pcs
UKA1H331MPD1TD	Nichicon	UKA	330 µF	50 V	±20%	2000 Hrs @ 105°C	-55°C ~ 105°C	0.689"	410 mA	Not specified	Not For New Designs	1373 Pcs
UKW1H331MPD1TD	Nichicon	UKW	330 µF	50 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.689"	570 mA	855 mA @ 10 kHz	Not For New Designs	2003 Pcs
UVK1H331MPD1TD	Nichicon	UVK	330 µF	50 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.689"	590 mA	885 mA @ 10 kHz	Not For New Designs	6069 Pcs
ECA-1HM331B	Panasonic Electronic Components	M-A	330 µF	50 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.669"	500 mA	850 mA @ 10 kHz	Active	82918 Pcs
860020675021	Würth Elektronik	WCAP-ATG5	330 µF	50 V	±20%	2000 Hrs @ 105°C	-40°C ~ 105°C	0.689"	450 mA	621 mA @ 100 kHz	Active	1717 Pcs
EEU-HD1H331B	Panasonic Electronic Components	HD	330 µF	50 V	±20%	2000 Hrs @ 105°C	-55°C ~ 105°C	0.689"	410 mA	615 mA @ 100 kHz	Active	1704 Pcs
860010675019	Würth Elektronik	WCAP-ATG8	330 µF	50 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.689"	649 mA	895.62 mA @ 100 kHz	Active	2159 Pcs
ESMG500ETD331MJ16S	Chemi-Con	SMG	330 µF	50 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.689"	585 mA	877.5 mA @ 100 kHz	Active	848 Pcs

Engineering Selection Recommendations

For Active Product Line Integration:

ECA-1HM331B (Panasonic) is the primary direct equivalent with active product status. This part maintains identical electrical specifications and mechanical compatibility while offering significantly higher inventory availability (82918 Pcs). The height specification of 0.669" is within acceptable tolerance of the original 0.689" maximum.

For Extended Temperature Applications:

EEU-HD1H331B (Panasonic) and 860020675021 (Würth Elektronik) both provide extended operating temperature ranges (-55°C to 105°C) and higher lifetime ratings (2000 Hrs @ 105°C). Both maintain active product status and full mechanical compatibility. Selection between these depends on ripple current requirements and supply chain preferences.

For High Ripple Current Requirements:

860010675019 (Würth Elektronik WCAP-ATG8) delivers the highest ripple current capacity (649 mA @ 120 Hz, 895.62 mA @ 100 kHz) while maintaining standard temperature specifications. This part is active and fully compatible.

For Nichicon Series Continuity:

UVK1H331MPD1TD represents the parametric equivalent within Nichicon's portfolio, offering identical electrical and mechanical specifications with the highest inventory among Nichicon alternatives (6069 Pcs).

All recommended substitutes are ROHS3 compliant and carry identical HTSUS and ECCN classifications.

Frequently Asked Questions (FAQ)

Q: Can UVR1H331MPD1TD be directly replaced with ECA-1HM331B?

A: Yes. Both parts share identical capacitance (330 µF), voltage rating (50 V), tolerance (±20%), lead spacing (5.00 mm), diameter (10.00 mm), and mounting type (through hole radial). The height difference of 0.020" (0.689" vs 0.669") is within standard PCB layout tolerance. Electrical performance is equivalent.

Q: What is the difference between parametric equivalents and direct equivalents?

A: Direct equivalents meet all specifications identically and are typically from different manufacturers. Parametric equivalents meet the same electrical and mechanical requirements but may originate from the same manufacturer with different series designations. Both are functionally interchangeable.

Q: Should I use parts with extended temperature ratings if my application only requires -40°C to 85°C?

A: Extended temperature parts (UKA1H331MPD1TD, EEU-HD1H331B, 860020675021) are compatible and provide additional design margin. However, they are not required for standard temperature range applications. Selection should be based on supply availability and cost considerations.

Q: Why do some substitute parts show lower ripple current ratings?

A: Ripple current capacity varies by series design and internal construction. Lower ripple current does not indicate incompatibility if your application current requirements are met. Verify your circuit's actual ripple current demand against the selected part's specification.

Q: Are all listed substitutes ROHS3 compliant?

A: Yes. All parts listed maintain ROHS3 compliance and are suitable for applications requiring environmental compliance certification.

Q: What is the significance of "Not For New Designs" status?

A: This designation indicates the manufacturer has discontinued active development of the series. Existing inventory remains available, but new designs should transition to active product lines. ECA-1HM331B, EEU-HD1H331B, 860020675021, and ESMG500ETD331MJ16S are all active alternatives.

Q: Can I mix different substitute parts in the same production run?

A: All listed substitutes are mechanically and electrically compatible. However, best practice is to standardize on a single part number per design revision to maintain consistency and simplify supply chain management.

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