Equivalent & Substitute Parts for UVR1H331MPA

Part Overview

The Nichicon UVR1H331MPA is a 330 µF, 50 V aluminum electrolytic capacitor in radial, can package with a rated lifetime of 2000 hours at 85°C. This part is classified as obsolete, making equivalent and substitute components necessary for ongoing production and maintenance applications. The UVR series represents an older generation of general-purpose aluminum electrolytic capacitors. Substitute parts maintain the core electrical specifications while offering improved product status, enhanced thermal performance, or better compliance certifications.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	50 V
Tolerance	±20%
Polarization	Polar
Package Type	Radial, Can
Lead Spacing	0.197" (5.00 mm)
Case Diameter	0.394" (10.00 mm)
Mounting	Through Hole
Ripple Current @ 120 Hz	590 mA
Ripple Current @ 10 kHz	885 mA
Operating Temperature Range	-40°C to 85°C
Lifetime @ Temperature	2000 Hrs @ 85°C

Substitute Part Grouping Explanation

Substitution for the UVR1H331MPA is determined by strict adherence to the following electrical and mechanical parameters:

Core Substitution Criteria:

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

Allowed Variations:

Operating Temperature Range: May extend beyond -40°C to 85°C
Lifetime @ Temperature: May exceed 2000 Hrs @ 85°C or operate at higher temperatures (e.g., 2000 Hrs @ 105°C)
Ripple Current: May exceed specified values
ESR: May be specified or lower than original
Product Status: May transition from Obsolete to Active or Not For New Designs
RoHS Compliance: May upgrade from non-compliant to ROHS3 compliant
Manufacturer: May differ

Substitute parts are grouped into three categories: Direct Manufacturer Equivalents (same series, same thermal rating), Upgrade Parts (enhanced thermal performance or compliance), and Parametric Equivalents (alternative manufacturers with identical core specifications).

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lead Spacing	Case Dia	Height	Lifetime @ Temp	Operating Temp	Ripple @ 120 Hz	Product Status	RoHS
UVR1H331MPA	Nichicon	330 µF	50 V	±20%	0.197" (5.00 mm)	0.394" (10.00 mm)	0.689" (17.50 mm)	2000 Hrs @ 85°C	-40°C ~ 85°C	590 mA	Obsolete	Non-compliant
UVR1H331MPD	Nichicon	330 µF	50 V	±20%	0.197" (5.00 mm)	0.394" (10.00 mm)	0.689" (17.50 mm)	2000 Hrs @ 85°C	-40°C ~ 85°C	590 mA	Not For New Designs	ROHS3 Compliant
UVR1H331MPD1CV	Nichicon	330 µF	50 V	±20%	0.197" (5.00 mm)	0.394" (10.00 mm)	0.689" (17.50 mm)	2000 Hrs @ 85°C	-40°C ~ 85°C	590 mA	Active	ROHS3 Compliant
UKA1H331MPD	Nichicon	330 µF	50 V	±20%	0.197" (5.00 mm)	0.394" (10.00 mm)	0.689" (17.50 mm)	2000 Hrs @ 105°C	-55°C ~ 105°C	410 mA	Not For New Designs	ROHS3 Compliant
337CKE050M	Cornell Dubilier / Illinois Capacitor	330 µF	50 V	±20%	0.197" (5.00 mm)	0.394" (10.00 mm)	0.689" (17.50 mm)	2000 Hrs @ 105°C	-40°C ~ 105°C	590 mA	Active	ROHS3 Compliant
50PX330MEFC10X16	Rubycon	330 µF	50 V	±20%	0.197" (5.00 mm)	0.394" (10.00 mm)	0.689" (17.50 mm)	2000 Hrs @ 105°C	-55°C ~ 105°C	470 mA	Active	ROHS3 Compliant
B41821A6337M000	EPCOS - TDK Electronics	330 µF	50 V	±20%	0.197" (5.00 mm)	0.394" (10.00 mm)	0.669" (17.00 mm)	2000 Hrs @ 85°C	-40°C ~ 85°C	590 mA	Active	ROHS3 Compliant
B41851A6337M000	EPCOS - TDK Electronics	330 µF	50 V	±20%	0.197" (5.00 mm)	0.394" (10.00 mm)	0.669" (17.00 mm)	2000 Hrs @ 105°C	-40°C ~ 105°C	410 mA	Active	ROHS3 Compliant
ECA-1HHG331	Panasonic Electronic Components	330 µF	50 V	±20%	0.197" (5.00 mm)	0.394" (10.00 mm)	0.669" (17.00 mm)	2000 Hrs @ 105°C	-55°C ~ 105°C	410 mA	Active	ROHS3 Compliant
EEU-HD1H331	Panasonic Electronic Components	330 µF	50 V	±20%	0.197" (5.00 mm)	0.394" (10.00 mm)	0.689" (17.50 mm)	2000 Hrs @ 105°C	-55°C ~ 105°C	410 mA	Active	ROHS3 Compliant
EKMQ500ELL331MJ16S	Chemi-Con	330 µF	50 V	±20%	0.197" (5.00 mm)	0.394" (10.00 mm)	0.689" (17.50 mm)	2000 Hrs @ 105°C	-55°C ~ 105°C	410 mA	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Manufacturer Equivalent (Same Series, Same Thermal Rating): UVR1H331MPD1CV is the recommended direct equivalent. This part maintains identical electrical specifications and thermal performance (2000 Hrs @ 85°C, -40°C to 85°C operating range) while offering Active product status and ROHS3 compliance. This part is suitable for direct replacement in existing designs without thermal or performance concerns.

Direct Equivalent with Enhanced Compliance: UVR1H331MPD provides the same electrical and thermal specifications as the original part with ROHS3 compliance upgrade. Product status is Not For New Designs, indicating limited long-term availability.

Upgrade Parts with Enhanced Thermal Performance: UKA1H331MPD, B41851A6337M000, ECA-1HHG331, EEU-HD1H331, and EKMQ500ELL331MJ16S all offer extended thermal performance (2000 Hrs @ 105°C) with expanded operating temperature ranges (-55°C to 105°C or -40°C to 105°C). These parts are suitable for applications requiring higher temperature stability. All are ROHS3 compliant and carry Active product status except UKA1H331MPD (Not For New Designs).

Alternative Manufacturers with Equivalent Specifications: 337CKE050M (Cornell Dubilier) and 50PX330MEFC10X16 (Rubycon) provide parametric equivalence with identical capacitance, voltage, tolerance, and package dimensions. Both are Active products with ROHS3 compliance. 337CKE050M maintains the original thermal rating (2000 Hrs @ 85°C) while 50PX330MEFC10X16 offers enhanced thermal performance (2000 Hrs @ 105°C).

Selection Criteria by Application:

For direct replacement in existing designs: UVR1H331MPD1CV
For enhanced thermal margin: ECA-1HHG331, EEU-HD1H331, or EKMQ500ELL331MJ16S
For alternative sourcing: 337CKE050M or 50PX330MEFC10X16
For extended temperature range: B41851A6337M000 or ECA-1HHG331

Frequently Asked Questions (FAQ)

Q: Can I use UVR1H331MPD1CV as a direct replacement for UVR1H331MPA? A: Yes. UVR1H331MPD1CV is a direct equivalent with identical capacitance (330 µF), voltage rating (50 V), tolerance (±20%), package (radial, can), lead spacing (5.00 mm), and thermal performance (2000 Hrs @ 85°C). The primary differences are Active product status and ROHS3 compliance.

Q: What is the difference between parts rated at 2000 Hrs @ 85°C and 2000 Hrs @ 105°C? A: The lifetime rating indicates the expected operational duration at the specified temperature. Parts rated at 2000 Hrs @ 105°C maintain their specified capacitance and performance characteristics for 2000 hours when operated at 105°C, providing greater thermal margin and longer service life in high-temperature environments. Parts rated at 2000 Hrs @ 85°C are suitable for standard operating conditions but may experience accelerated aging in elevated temperature applications.

Q: Are all substitute parts physically interchangeable with the original UVR1H331MPA? A: All listed substitute parts share identical lead spacing (5.00 mm), case diameter (10.00 mm), and mounting type (through hole). Most maintain the same seated height (17.50 mm), with the exception of EPCOS (B41821A6337M000, B41851A6337M000) and Panasonic ECA-1HHG331 parts, which have a slightly reduced height of 17.00 mm. This minor height difference does not affect PCB compatibility for standard through-hole applications.

Q: What does ROHS3 compliance mean for this capacitor? A: ROHS3 compliance indicates the part meets the Restriction of Hazardous Substances Directive, restricting the use of specific hazardous materials including lead, mercury, cadmium, and certain flame retardants. The original UVR1H331MPA is RoHS non-compliant. All substitute parts listed are ROHS3 compliant, making them suitable for applications requiring environmental compliance.

Q: Can I use a part with lower ripple current rating than the original? A: Ripple current rating indicates the maximum AC current the capacitor can handle without exceeding temperature limits. Using a part with lower ripple current rating in an application requiring higher ripple current may result in premature failure due to excessive heating. Verify that the substitute part's ripple current rating meets or exceeds the application requirement.

Q: Which substitute part offers the best long-term availability? A: Parts with Active product status offer the best long-term availability. These include UVR1H331MPD1CV, 337CKE050M, 50PX330MEFC10X16, B41821A6337M000, B41851A6337M000, ECA-1HHG331, EEU-HD1H331, and EKMQ500ELL331MJ16S. Parts marked as Not For New Designs have limited availability and are not recommended for new designs.

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