UKW1H331MPD1TD Equivalent & Substitute Parts

Part Overview

The UKW1H331MPD1TD 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 This component is classified as Not For New Designs, indicating it has been superseded in Nichicon's product portfolio. Finding equivalent and substitute parts is necessary to support existing designs, facilitate production continuity, and identify modern alternatives with improved performance characteristics or extended operational temperature ranges.

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 (Max)	0.689" (17.50 mm)
Mounting Type	Through Hole
Polarization	Polar
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the UKW1H331MPD1TD is determined by the following critical parameters:

Mandatory Matching Parameters:

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

Allowable Variations:

Height: Substitute parts may vary within ±0.020" (0.50 mm) from the original 0.689" (17.50 mm) specification
Lifetime @ Temperature: Substitutes may have different thermal lifetime ratings (e.g., 2000 Hrs @ 85°C vs. 2000 Hrs @ 105°C)
Operating Temperature Range: Substitutes may have extended temperature ranges (e.g., -55°C ~ 105°C vs. -40°C ~ 85°C)
Ripple Current: Substitutes may have different ripple current specifications at various frequencies
Manufacturer: Different manufacturers are acceptable provided all mandatory parameters match

All substitute parts listed maintain ROHS3 compliance and are suitable for direct PCB replacement without design modification.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	Lifetime @ Temp.	Operating Temp. Range	Height (Max)	Product Status	Inventory
UKW1H331MPD1TD	Nichicon	UKW	330 µF	50 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.689" (17.50 mm)	Not For New Designs	2003 Pcs
UKA1H331MPD1TD	Nichicon	UKA	330 µF	50 V	±20%	2000 Hrs @ 105°C	-55°C ~ 105°C	0.689" (17.50 mm)	Not For New Designs	1373 Pcs
UVK1H331MPD1TD	Nichicon	UVK	330 µF	50 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.689" (17.50 mm)	Not For New Designs	6069 Pcs
UVR1H331MPD1TD	Nichicon	UVR	330 µF	50 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.689" (17.50 mm)	Not For New Designs	11119 Pcs
UFW1H331MPD1TD	Nichicon	UFW	330 µF	50 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.689" (17.50 mm)	Not For New Designs	1059 Pcs
ECA-1HM331B	Panasonic Electronic Components	M-A	330 µF	50 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.669" (17.00 mm)	Active	82918 Pcs
860010675019	Würth Elektronik	WCAP-ATG8	330 µF	50 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.689" (17.50 mm)	Active	2159 Pcs
860020675021	Würth Elektronik	WCAP-ATG5	330 µF	50 V	±20%	2000 Hrs @ 105°C	-40°C ~ 105°C	0.689" (17.50 mm)	Active	1717 Pcs
EEU-HD1H331B	Panasonic Electronic Components	HD	330 µF	50 V	±20%	2000 Hrs @ 105°C	-55°C ~ 105°C	0.689" (17.50 mm)	Active	1704 Pcs
ESMG500ETD331MJ16S	Chemi-Con	SMG	330 µF	50 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.689" (17.50 mm)	Active	848 Pcs

Engineering Selection Recommendations

Active Product Status Substitutes (Recommended for New Designs):

The following parts are classified as Active and represent current production components suitable for new design implementations:

ECA-1HM331B (Panasonic Electronic Components): Active status with 82918 units in stock. Height specification of 0.669" (17.00 mm) is within acceptable tolerance. Suitable for designs requiring standard thermal performance at 85°C.
860010675019 (Würth Elektronik WCAP-ATG8): Active status with 2159 units in stock. Maintains exact dimensional specifications. Suitable for designs requiring standard thermal performance at 85°C.
860020675021 (Würth Elektronik WCAP-ATG5): Active status with 1717 units in stock. Extended operating temperature range (-40°C ~ 105°C) and higher thermal lifetime rating (2000 Hrs @ 105°C). Suitable for designs requiring enhanced thermal performance.
EEU-HD1H331B (Panasonic Electronic Components HD Series): Active status with 1704 units in stock. Extended operating temperature range (-55°C ~ 105°C) and higher thermal lifetime rating (2000 Hrs @ 105°C). Suitable for designs requiring maximum thermal performance and extended low-temperature operation.

Not For New Designs Substitutes (Legacy Support Only):

The following parts are classified as Not For New Designs and are suitable only for replacement in existing designs or production continuity:

UKA1H331MPD1TD (Nichicon UKA Series): Extended operating temperature range (-55°C ~ 105°C) with 2000 Hrs @ 105°C lifetime.
UVK1H331MPD1TD (Nichicon UVK Series): Highest inventory availability (6069 units) among Nichicon legacy options.
UVR1H331MPD1TD (Nichicon UVR Series): Highest overall inventory availability (11119 units) among all legacy substitutes.
UFW1H331MPD1TD (Nichicon UFW Series): Parametric equivalent with identical thermal specifications to the original UKW1H331MPD1TD.

All substitute parts maintain ROHS3 compliance and are electrically and mechanically compatible with the original UKW1H331MPD1TD specification.

Frequently Asked Questions (FAQ)

Q: Can I use ECA-1HM331B as a direct replacement for UKW1H331MPD1TD?

A: Yes. The ECA-1HM331B meets all mandatory electrical and mechanical parameters: 330 µF capacitance, 50 V voltage rating, ±20% tolerance, radial can package, 5.00 mm lead spacing, and 10.00 mm diameter. The height difference of 0.020" (0.50 mm) is within acceptable tolerance for through-hole PCB mounting. ECA-1HM331B is an Active product, making it suitable for new designs.

Q: What is the difference between the Nichicon UKA1H331MPD1TD and UVR1H331MPD1TD?

A: Both are Nichicon products rated for 330 µF at 50 V with 2000 Hrs @ 85°C lifetime. The UKA1H331MPD1TD offers an extended operating temperature range (-55°C ~ 105°C) and higher thermal lifetime (2000 Hrs @ 105°C), while the UVR1H331MPD1TD maintains the standard range (-40°C ~ 85°C). The UVR1H331MPD1TD has significantly higher inventory availability (11119 units vs. 1373 units).

Q: Should I choose an Active product or a Not For New Designs product?

A: For new designs, select an Active product such as ECA-1HM331B, 860010675019, 860020675021, or EEU-HD1H331B. For existing designs requiring replacement components or production continuity, Not For New Designs products (UKA1H331MPD1TD, UVK1H331MPD1TD, UVR1H331MPD1TD, UFW1H331MPD1TD) are acceptable substitutes.

Q: What is the advantage of EEU-HD1H331B over ECA-1HM331B?

A: The EEU-HD1H331B offers an extended operating temperature range (-55°C ~ 105°C) compared to ECA-1HM331B (-40°C ~ 85°C), and provides a higher thermal lifetime rating (2000 Hrs @ 105°C vs. 2000 Hrs @ 85°C). Select EEU-HD1H331B for applications requiring operation at elevated temperatures or extended low-temperature performance.

Q: Are Würth Elektronik parts compatible with the original Nichicon UKW1H331MPD1TD?

A: Yes. Both 860010675019 and 860020675021 meet all mandatory electrical and mechanical parameters. Both are Active products. The 860020675021 offers extended thermal performance (2000 Hrs @ 105°C, -40°C ~ 105°C) compared to 860010675019 (2000 Hrs @ 85°C, -40°C ~ 85°C).

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

A: Yes, provided all parts meet the mandatory electrical and mechanical parameters. However, for consistency in thermal performance and reliability, it is preferable to use the same part number throughout a design or production batch.

Q: What does "Not For New Designs" mean?

A: This designation indicates the part has been superseded in the manufacturer's product portfolio and is no longer recommended for new design implementations. These parts remain suitable for replacement in existing designs and production continuity of established products.

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