UPW2D331MRD Equivalent & Substitute Parts

Part Overview

The UPW2D331MRD is a 330 µF, 200 V aluminum electrolytic capacitor in radial, can package manufactured by Nichicon. This component is rated for 8000 hours at 105°C and is designed for general-purpose applications requiring high-voltage energy storage and filtering. The part is currently obsolete, making equivalent substitutes necessary for ongoing maintenance, repair, and legacy system support.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	200 V
Tolerance	±20%
Lifetime @ 105°C	8000 Hrs
Operating Temperature Range	-40°C to 105°C
Polarization	Polar
Mounting Type	Through Hole
Package Type	Radial, Can
Lead Spacing	0.394" (10.00 mm)
Diameter	0.866" (22.00 mm)
Height	1.575" (40.00 mm)

Substitute Part Grouping Explanation

Substitution for the UPW2D331MRD is determined by strict adherence to the following electrical and mechanical parameters:

Electrical Requirements (Non-Negotiable):

Capacitance: 330 µF (exact match)
Voltage Rating: 200 V (exact match or higher)
Tolerance: ±20% (exact match)
Polarization: Polar (exact match)
Operating Temperature: -40°C to 105°C minimum (exact match)

Mechanical Requirements (Compatibility-Dependent):

Mounting Type: Through Hole (exact match)
Package Type: Radial, Can (exact match)
Lead Spacing: 0.295" (7.50 mm) or 0.394" (10.00 mm) acceptable with PCB layout verification
Physical Dimensions: Diameter and height variations acceptable if PCB footprint accommodates

Performance Characteristics (Application-Dependent):

Lifetime @ 105°C: 2000 Hrs minimum (UPW2D331MRD specifies 8000 Hrs; lower-rated substitutes acceptable for non-critical applications)
Ripple Current Ratings: Must meet or exceed application requirements

Compliance & Status:

RoHS3 Compliant (required)
REACH Status: Unaffected or Affected (both acceptable)

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	Lifetime @ 105°C	Lead Spacing	Diameter	Height	Status	Inventory
UPW2D331MRD	Nichicon	UPW	330 µF	200 V	±20%	8000 Hrs	0.394" (10.00 mm)	0.866" (22.00 mm)	1.575" (40.00 mm)	Obsolete	1157 Pcs
LDQ2D331MERYGA	Nichicon	LDQ	330 µF	200 V	±20%	2000 Hrs	0.295" (7.50 mm)	0.787" (20.00 mm)	0.787" (20.00 mm)	Active	1019 Pcs
UAS2D331MHD	Nichicon	UAS	330 µF	200 V	±20%	2000 Hrs	0.295" (7.50 mm)	0.709" (18.00 mm)	1.654" (42.00 mm)	Active	778 Pcs
UCS2D331MHD	Nichicon	UCS	330 µF	200 V	±20%	10000 Hrs	0.295" (7.50 mm)	0.709" (18.00 mm)	1.457" (37.00 mm)	Active	4350 Pcs
UCY2D331MHD	Nichicon	UCY	330 µF	200 V	±20%	12000 Hrs	0.295" (7.50 mm)	0.630" (16.00 mm)	1.634" (41.50 mm)	Active	1154 Pcs
UCY2D331MHD6	Nichicon	UCY	330 µF	200 V	±20%	12000 Hrs	0.295" (7.50 mm)	0.709" (18.00 mm)	1.299" (33.00 mm)	Active	1498 Pcs
UVY2D331MHD	Nichicon	UVY	330 µF	200 V	±20%	2000 Hrs	0.295" (7.50 mm)	0.709" (18.00 mm)	1.654" (42.00 mm)	Not For New Designs	824 Pcs
EKXG201ELL331MMP1S	Chemi-Con	KXG	330 µF	200 V	±20%	10000 Hrs	0.295" (7.50 mm)	0.709" (18.00 mm)	1.398" (35.50 mm)	Active	805 Pcs

Engineering Selection Recommendations

Primary Substitutes (Active Status, Recommended for New Designs):

UCS2D331MHD and UCY2D331MHD6 are the preferred substitutes. Both are manufactured by Nichicon, maintain active product status, and exceed the original UPW2D331MRD lifetime specification (10000 Hrs and 12000 Hrs respectively versus 8000 Hrs). UCS2D331MHD offers the highest inventory availability (4350 units) and is suitable for applications where extended operational life is beneficial. UCY2D331MHD6 provides the most compact height (1.299") while maintaining performance specifications.

Secondary Substitutes (Active Status, Conditional Use):

EKXG201ELL331MMP1S (Chemi-Con, KXG series) is an active alternative from a different manufacturer with 10000-hour lifetime rating. This part is suitable for applications where cross-manufacturer sourcing is acceptable and provides equivalent electrical performance.

UAS2D331MHD (Nichicon, UAS series) is active but rated for 2000 hours at 105°C. This substitute is appropriate only for applications with lower thermal stress or shorter operational life requirements.

Not Recommended for New Designs:

UVY2D331MHD carries "Not For New Designs" status and should be avoided for new applications despite active inventory availability.

Lead Spacing Consideration:

The original UPW2D331MRD has 0.394" (10.00 mm) lead spacing. All substitute parts listed use 0.295" (7.50 mm) spacing. PCB layout verification is required to confirm footprint compatibility before implementation.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a different lead spacing?

A: Lead spacing differs between the original part (0.394") and all substitutes (0.295"). Physical PCB layout must be verified to confirm the footprint accommodates the narrower lead spacing. If the original PCB is designed for 10.00 mm spacing, mechanical modification or PCB redesign may be necessary.

Q: What is the minimum lifetime rating acceptable for substitution?

A: The original UPW2D331MRD specifies 8000 hours at 105°C. Substitutes with lower ratings (2000 hours) are electrically compatible but may have reduced operational life in high-temperature environments. Application thermal conditions determine acceptability.

Q: Are Chemi-Con parts compatible with Nichicon designs?

A: EKXG201ELL331MMP1S (Chemi-Con) meets all electrical specifications and RoHS3 compliance. Cross-manufacturer substitution is acceptable provided mechanical dimensions fit the PCB footprint and application requirements do not mandate single-source qualification.

Q: Which substitute offers the best inventory availability?

A: UCS2D331MHD has the highest inventory (4350 units) and combines active product status with 10000-hour lifetime rating, making it the most readily available option.

Q: Can I use a part rated for higher voltage than 200 V?

A: All listed substitutes are rated for exactly 200 V. Higher voltage ratings are not provided in the available substitute list. Voltage rating must match the application design specification.

Q: What does "Not For New Designs" mean for UVY2D331MHD?

A: This designation indicates the manufacturer no longer recommends this part for new product development. While electrically compatible, it should be used only for legacy system repairs where no other option exists.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All substitute parts listed carry RoHS3 Compliant status, meeting environmental and regulatory requirements equivalent to the original UPW2D331MRD.

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