Equivalent & Substitute Parts for UCY2E331MHD

Part Overview

The Nichicon UCY2E331MHD is a 330 µF, 250 V aluminum electrolytic capacitor in radial, can package configuration. This part is classified as Active status and is designed for general purpose applications requiring through-hole mounting. The UCY2E331MHD offers a rated lifetime of 12000 hours at 105°C, making it suitable for applications with extended operational requirements. Alternative equivalent parts may be necessary when the primary part is unavailable, when design specifications require different mechanical dimensions, or when application requirements permit substitution with parts having different thermal ratings.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	250 V
Tolerance	±20%
Lifetime @ 105°C	12000 Hrs
Operating Temperature Range	-40°C ~ 105°C
Polarization	Polar
Mounting Type	Through Hole
Package Type	Radial, Can
Lead Spacing	0.295" (7.50mm)
Diameter	0.709" (18.00mm)
Height (Max)	1.870" (47.50mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of aluminum electrolytic capacitors is determined by strict equivalence in the following parameters: capacitance value (330 µF), voltage rating (250 V), tolerance (±20%), polarization (Polar), mounting type (Through Hole), and package configuration (Radial, Can). The substitute parts listed—UPS2E331MRD, UVY2E331MRD, and UVZ2E331MRD—all match these core electrical and mechanical specifications. However, these parts differ in thermal lifetime ratings, physical dimensions, ripple current capabilities, and product status. Substitution is valid only when the application requirements permit acceptance of these secondary parameter variations.

Parameter Comparison

Parameter	UCY2E331MHD	UPS2E331MRD	UVY2E331MRD	UVZ2E331MRD
Manufacturer	Nichicon	Nichicon	Nichicon	Nichicon
Series	UCY	UPS	UVY	UVZ
Capacitance	330 µF	330 µF	330 µF	330 µF
Voltage Rating	250 V	250 V	250 V	250 V
Tolerance	±20%	±20%	±20%	±20%
Lifetime @ 105°C	12000 Hrs	3000 Hrs	2000 Hrs	2000 Hrs
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C
Polarization	Polar	Polar	Polar	Polar
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package Type	Radial, Can	Radial, Can	Radial, Can	Radial, Can
Lead Spacing	0.295" (7.50mm)	0.394" (10.00mm)	0.394" (10.00mm)	0.394" (10.00mm)
Diameter	0.709" (18.00mm)	0.866" (22.00mm)	0.787" (20.00mm)	0.866" (22.00mm)
Height (Max)	1.870" (47.50mm)	2.047" (52.00mm)	1.654" (42.00mm)	2.047" (52.00mm)
Ripple Current @ 120 Hz	1.6 A	1.15 A	710 mA	730 mA
Product Status	Active	Obsolete	Obsolete	Obsolete
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

The UCY2E331MHD is the recommended primary selection for new designs due to its Active product status and superior thermal lifetime rating of 12000 hours at 105°C. All substitute parts are classified as Obsolete and exhibit reduced thermal lifetimes: UPS2E331MRD provides 3000 hours, while UVY2E331MRD and UVZ2E331MRD each provide 2000 hours at 105°C. All parts maintain ROHS3 compliance and are suitable for general purpose applications within the specified operating temperature range of -40°C to 105°C.

Substitution with UPS2E331MRD is permissible when the application environment supports a reduced thermal lifetime of 3000 hours and when the larger physical dimensions (0.866" diameter, 2.047" height, 0.394" lead spacing) are accommodated by the circuit board layout. This part offers the highest ripple current capability among the obsolete alternatives at 1.15 A @ 120 Hz.

Substitution with UVY2E331MRD is permissible when the application supports a 2000-hour thermal lifetime and when the intermediate physical dimensions (0.787" diameter, 1.654" height, 0.394" lead spacing) are compatible with the PCB design. This part provides the most compact height profile among the substitutes.

Substitution with UVZ2E331MRD is permissible under the same thermal lifetime constraints as UVY2E331MRD (2000 hours at 105°C) and when the larger physical dimensions (0.866" diameter, 2.047" height, 0.394" lead spacing) are accommodated. This part exhibits ripple current performance comparable to UVY2E331MRD at 730 mA @ 120 Hz.

Frequently Asked Questions (FAQ)

Q: Can UCY2E331MHD be directly replaced with UPS2E331MRD on an existing PCB?

A: Direct replacement is not recommended without PCB layout verification. While both parts share identical electrical specifications (330 µF, 250 V, ±20%), the UPS2E331MRD has different mechanical dimensions: 0.866" diameter versus 0.709" for the UCY2E331MHD, 2.047" height versus 1.870", and 0.394" lead spacing versus 0.295". PCB footprint compatibility must be confirmed before substitution.

Q: What is the primary difference between the UCY2E331MHD and the obsolete substitute parts?

A: The primary difference is thermal lifetime. The UCY2E331MHD provides 12000 hours at 105°C, while UPS2E331MRD provides 3000 hours, and both UVY2E331MRD and UVZ2E331MRD provide 2000 hours. All parts maintain identical capacitance, voltage rating, and tolerance specifications. The reduced thermal lifetime of obsolete parts may impact long-term reliability in applications with extended operational requirements or elevated ambient temperatures.

Q: Are all substitute parts RoHS compliant?

A: Yes. The UCY2E331MHD and all substitute parts (UPS2E331MRD, UVY2E331MRD, UVZ2E331MRD) are ROHS3 compliant and suitable for applications requiring RoHS certification.

Q: Which substitute part has the smallest physical footprint?

A: The UVY2E331MRD offers the most compact height at 1.654" (42.00mm), compared to 1.870" for the UCY2E331MHD, 2.047" for both UPS2E331MRD and UVZ2E331MRD. However, the UVY2E331MRD has a larger diameter (0.787") than the UCY2E331MHD (0.709"), so overall space requirements depend on the specific PCB layout constraints.

Q: Can substitute parts be used in applications requiring extended thermal lifetime?

A: No. Applications requiring thermal lifetimes exceeding 3000 hours at 105°C should use the UCY2E331MHD (12000 hours). The obsolete substitute parts are not suitable for such applications due to their reduced thermal ratings.

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