UVK2D331MHD Equivalent & Substitute Parts

Part Overview

The UVK2D331MHD is a 330 µF, 200 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 This component is classified as Not For New Designs, indicating it has been superseded in the manufacturer's product line.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 components with improved performance characteristics such as extended lifetime ratings or higher operating temperature ranges.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	200 V
Tolerance	±20%
Lifetime @ Temperature	2000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Lead Spacing	0.295" (7.50 mm)
Case Diameter	0.709" (18.00 mm)
Height	1.654" (42.00 mm)
Mounting Type	Through Hole Radial
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the UVK2D331MHD is determined by strict equivalence in the following parameters: capacitance value (330 µF), voltage rating (200 V or higher), tolerance (±20%), mechanical compatibility (lead spacing, case diameter, height, and through-hole mounting), and compliance certifications (ROHS3). Parts are grouped into three categories:

Upgrade Substitutes maintain or exceed the original specifications while offering improved performance characteristics such as higher operating temperature ranges (-40°C ~ 105°C vs. -40°C ~ 85°C) or extended lifetime ratings (2000 Hrs @ 105°C or 12000 Hrs @ 105°C vs. 2000 Hrs @ 85°C). These parts are suitable for direct replacement with enhanced reliability margins.

Direct Substitutes match the original specifications exactly, including voltage rating (200 V), lifetime (2000 Hrs @ 85°C), and operating temperature range (-40°C ~ 85°C), while originating from alternative manufacturers. These parts provide functional equivalence without performance enhancement.

Similar Substitutes maintain the core electrical specifications (330 µF, 200 V, ±20%) but differ in mechanical dimensions (case diameter or height) or ripple current ratings. These parts require verification of physical fit within the application's PCB layout and thermal environment.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lifetime @ Temp.	Operating Temp.	Case Dia.	Height	Product Status
UVK2D331MHD	Nichicon	330 µF	200 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.709" (18.00 mm)	1.654" (42.00 mm)	Not For New Designs
UAS2D331MHD	Nichicon	330 µF	200 V	±20%	2000 Hrs @ 105°C	-40°C ~ 105°C	0.709" (18.00 mm)	1.654" (42.00 mm)	Active
UCY2E331MHD9	Nichicon	330 µF	250 V	±20%	12000 Hrs @ 105°C	-40°C ~ 105°C	0.709" (18.00 mm)	1.634" (41.50 mm)	Active
LDM2D331MERYGA	Nichicon	330 µF	200 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.787" (20.00 mm)	1.260" (32.00 mm)	Active
ESMQ201ELL331MM40S	Chemi-Con	330 µF	200 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.709" (18.00 mm)	1.634" (41.50 mm)	Active
200PX330MEFC18X40	Rubycon	330 µF	200 V	±20%	2000 Hrs @ 105°C	-40°C ~ 105°C	0.709" (18.00 mm)	1.654" (42.00 mm)	Active
EKMQ201ELL331MM40S	Chemi-Con	330 µF	200 V	±20%	2000 Hrs @ 105°C	-40°C ~ 105°C	0.709" (18.00 mm)	1.634" (41.50 mm)	Active
EKXJ251ELL331MM40S	Chemi-Con	330 µF	250 V	±20%	12000 Hrs @ 105°C	-40°C ~ 105°C	0.709" (18.00 mm)	1.634" (41.50 mm)	Active

Engineering Selection Recommendations

For Direct Replacement with Enhanced Reliability: UAS2D331MHD (Nichicon) is the primary upgrade substitute. It maintains identical mechanical dimensions and electrical specifications while extending the operating temperature range to 105°C and improving lifetime rating to 2000 Hrs @ 105°C. Both components are ROHS3 compliant and share the same lead spacing and case geometry, ensuring drop-in compatibility.

For Applications Requiring Extended Lifetime: UCY2E331MHD9 (Nichicon) and EKXJ251ELL331MM40S (Chemi-Con) both provide 12000 Hrs @ 105°C lifetime ratings with 250 V voltage ratings. These components offer significant reliability enhancement for demanding applications. Height differs slightly (1.634" vs. 1.654"), requiring PCB layout verification. EKXJ251ELL331MM40S carries AEC-Q200 automotive qualification.

For Cross-Manufacturer Substitution: ESMQ201ELL331MM40S (Chemi-Con) provides direct electrical and mechanical equivalence to the original UVK2D331MHD, maintaining 2000 Hrs @ 85°C lifetime and identical voltage/capacitance specifications. EKMQ201ELL331MM40S (Chemi-Con) upgrades to 2000 Hrs @ 105°C with extended temperature range while preserving mechanical compatibility.

For Alternative Geometry: LDM2D331MERYGA (Nichicon) maintains electrical specifications but features different mechanical dimensions (0.787" diameter, 1.260" height). This part is suitable only when PCB layout accommodates the larger diameter and shorter height profile.

Frequently Asked Questions (FAQ)

Q: Can UAS2D331MHD replace UVK2D331MHD directly? A: Yes. UAS2D331MHD is a direct mechanical and electrical substitute with identical lead spacing (7.50 mm), case diameter (18.00 mm), and height (42.00 mm). It improves upon the original by extending operating temperature to 105°C and lifetime to 2000 Hrs @ 105°C.

Q: What is the difference between 200 V and 250 V rated parts? A: Voltage rating indicates the maximum continuous voltage the capacitor can withstand. A 250 V part (UCY2E331MHD9, EKXJ251ELL331MM40S) can be used in applications rated for 200 V or lower, providing additional safety margin. However, physical dimensions may differ slightly.

Q: Why does LDM2D331MERYGA have different dimensions? A: LDM2D331MERYGA belongs to a different product series with alternative mechanical packaging. While electrically equivalent (330 µF, 200 V, ±20%), its larger diameter (20.00 mm) and shorter height (32.00 mm) require PCB layout verification before substitution.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All parts listed in this reference maintain ROHS3 compliance, meeting environmental and regulatory requirements for electronic component manufacturing.

Q: What does "Not For New Designs" mean for UVK2D331MHD? A: This designation indicates the part has been discontinued or superseded by the manufacturer. While existing inventory may be available, new designs should specify active alternatives such as UAS2D331MHD or UCY2E331MHD9.

Q: Can I use a 250 V rated capacitor in a 200 V application? A: Yes. A higher voltage rating provides additional safety margin and is electrically compatible. However, verify that mechanical dimensions (case diameter and height) fit the PCB layout, as some 250 V variants have different form factors.

Q: What is the significance of lifetime ratings at different temperatures? A: Lifetime rating indicates the expected operational duration at a specified temperature. A part rated 2000 Hrs @ 105°C will degrade faster at 105°C than at lower temperatures. Selecting parts with higher temperature ratings and longer lifetimes improves long-term reliability in thermally demanding environments.

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