Nichicon LDQ2D331MERYGA Equivalent & Substitute Parts

Part Overview

The Nichicon LDQ2D331MERYGA is a 330 µF, 200 V aluminum electrolytic capacitor in radial, can package rated for 2000 hours at 105°C. This component is classified as Active and suitable for general-purpose applications requiring through-hole mounting. Substitute parts are necessary when design requirements demand extended operational lifetime, improved ripple current handling, or when the primary part becomes unavailable due to inventory constraints or product status changes.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	200 V
Tolerance	±20%
Lifetime @ 105°C	2000 Hrs
Operating Temperature Range	-40°C ~ 105°C
Polarization	Polar
Mounting Type	Through Hole
Package Type	Radial, Can
Lead Spacing	0.295" (7.50mm)
Physical Dimensions	0.787" Dia x 1.378" L (20.00mm x 35.00mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the LDQ2D331MERYGA is determined by the following mandatory parameters:

Capacitance: Must equal 330 µF
Voltage Rating: Must equal or exceed 200 V
Tolerance: Must be ±20% or tighter
Polarization: Must be Polar
Mounting Type: Must be Through Hole
Package Type: Must be Radial, Can
Lead Spacing: Must be 0.295" (7.50mm)
Operating Temperature Range: Must support -40°C ~ 105°C minimum
RoHS Compliance: Must maintain ROHS3 Compliant status

Substitute parts may vary in lifetime rating, ripple current specifications, physical diameter, and height, provided all mandatory parameters remain within specification. Parts with extended lifetime ratings (8000 Hrs, 10000 Hrs, 12000 Hrs) offer improved reliability for applications requiring longer operational duration.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	Lifetime @ 105°C	Operating Temp	Lead Spacing	Diameter (mm)	Height (mm)	Product Status	RoHS Status
LDQ2D331MERYGA	Nichicon	LDQ	330 µF	200 V	±20%	2000 Hrs	-40°C ~ 105°C	7.50mm	20.00	35.00	Active	ROHS3
UCS2D331MHD	Nichicon	UCS	330 µF	200 V	±20%	10000 Hrs	-40°C ~ 105°C	7.50mm	18.00	37.00	Active	ROHS3
UCY2D331MHD	Nichicon	UCY	330 µF	200 V	±20%	12000 Hrs	-40°C ~ 105°C	7.50mm	16.00	41.50	Active	ROHS3
UCY2D331MHD6	Nichicon	UCY	330 µF	200 V	±20%	12000 Hrs	-40°C ~ 105°C	7.50mm	18.00	33.00	Active	ROHS3
UPW2D331MRD	Nichicon	UPW	330 µF	200 V	±20%	8000 Hrs	-40°C ~ 105°C	10.00mm	22.00	40.00	Obsolete	ROHS3
UVY2D331MHD	Nichicon	UVY	330 µF	200 V	±20%	2000 Hrs	-40°C ~ 105°C	7.50mm	18.00	42.00	Not For New Designs	ROHS3

Engineering Selection Recommendations

Primary Substitutes (Active Status, Recommended for New Designs)

UCS2D331MHD: Active product with 10000-hour lifetime rating. Suitable for applications requiring extended operational duration beyond the LDQ2D331MERYGA baseline. Maintains identical lead spacing and voltage rating. Diameter reduced to 18.00mm with increased height to 37.00mm.
UCY2D331MHD and UCY2D331MHD6: Active products with 12000-hour lifetime rating, the highest available in this substitution group. Both maintain identical lead spacing and voltage rating. UCY2D331MHD features 16.00mm diameter and 41.50mm height. UCY2D331MHD6 features 18.00mm diameter and 33.00mm height, offering a more compact profile.

Secondary Substitutes (Limited Applicability)

UPW2D331MRD: Obsolete product status restricts use to legacy system maintenance only. Lead spacing differs at 10.00mm, requiring PCB layout modification. Not suitable for new designs.
UVY2D331MHD: Marked "Not For New Designs." Lifetime rating matches the LDQ2D331MERYGA at 2000 hours. Use only when existing inventory constraints or legacy system requirements mandate substitution.

All substitute parts maintain ROHS3 compliance and support the required operating temperature range of -40°C to 105°C.

Frequently Asked Questions (FAQ)

Q: Can UCY2D331MHD or UCY2D331MHD6 be used as direct replacements for LDQ2D331MERYGA?

A: Yes, both UCY series parts meet all mandatory substitution parameters: 330 µF capacitance, 200 V voltage rating, ±20% tolerance, 7.50mm lead spacing, through-hole radial can package, and -40°C to 105°C operating range. Physical dimensions differ, requiring PCB layout verification. Both are Active products suitable for new designs.

Q: What is the primary advantage of UCS2D331MHD over the LDQ2D331MERYGA?

A: UCS2D331MHD provides a 10000-hour lifetime rating at 105°C, compared to 2000 hours for the LDQ2D331MERYGA. This five-fold increase in rated operational duration improves system reliability for applications with extended service requirements. All electrical parameters remain identical.

Q: Why does UPW2D331MRD have a different lead spacing?

A: UPW2D331MRD features 10.00mm lead spacing versus 7.50mm for the LDQ2D331MERYGA. This dimensional difference requires PCB footprint modification and is not a direct pin-compatible substitute. Additionally, UPW2D331MRD is classified as Obsolete, limiting its use to legacy system support.

Q: Are there physical size constraints when substituting with UCY2D331MHD or UCY2D331MHD6?

A: Yes. LDQ2D331MERYGA measures 20.00mm diameter by 35.00mm height. UCY2D331MHD measures 16.00mm diameter by 41.50mm height. UCY2D331MHD6 measures 18.00mm diameter by 33.00mm height. PCB layout and enclosure clearance must be verified before substitution.

Q: Should UVY2D331MHD be used for new designs?

A: No. UVY2D331MHD is marked "Not For New Designs." Use this part only for legacy system maintenance or when existing inventory constraints require substitution. For new designs, select from Active products: UCS2D331MHD, UCY2D331MHD, or UCY2D331MHD6.

Q: Do all substitute parts maintain RoHS3 compliance?

A: Yes. All listed substitute parts are ROHS3 Compliant, matching the compliance status of the LDQ2D331MERYGA.

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