Equivalent & Substitute Parts for UVR1H331MPD

Part Overview

The UVR1H331MPD is a 330 µF, 50 V aluminum electrolytic capacitor in radial, can package manufactured by Nichicon. This component is classified as Not For New Designs, indicating it has been superseded in the manufacturer's product line. The part operates across a temperature range of -40°C to 85°C with a rated lifetime of 2000 hours at 85°C, making it suitable for general-purpose applications requiring stable capacitance in moderate thermal environments. Identifying equivalent and substitute parts is necessary to support legacy system maintenance, procurement continuity, and design flexibility when the original part becomes unavailable or when performance improvements are desired.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	50 V
Tolerance	±20%
Package Type	Radial, Can
Mounting Type	Through Hole
Lead Spacing	0.197" (5.00 mm)
Polarization	Polar
Operating Temperature Range	-40°C to 85°C
Lifetime Rating	2000 Hrs @ 85°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the UVR1H331MPD is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters (Must Match):

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

Allowable Variations:

Operating Temperature Range: May extend beyond the original -40°C to 85°C specification
Lifetime Rating: May exceed 2000 Hrs @ 85°C or be rated at higher temperatures (e.g., 2000 Hrs @ 105°C)
Physical Dimensions: Minor variations in diameter and height are acceptable if lead spacing and mounting footprint remain compatible
Ripple Current Ratings: May differ based on frequency and thermal rating
ESR (Equivalent Series Resistance): Variations are acceptable if not specified as a critical design parameter

Substitute parts are grouped into three categories: Upgrade parts (enhanced thermal performance), Similar parts (equivalent performance with different physical dimensions), and Direct equivalents (matching all critical parameters).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Operating Temp Range	Lifetime @ Temp	Size Dia	Height (Max)	Lead Spacing	Product Status
UVR1H331MPD	Nichicon	330 µF	50 V	±20%	-40°C ~ 85°C	2000 Hrs @ 85°C	0.394" (10.00 mm)	0.689" (17.50 mm)	0.197" (5.00 mm)	Not For New Designs
UKA1H331MPD	Nichicon	330 µF	50 V	±20%	-55°C ~ 105°C	2000 Hrs @ 105°C	0.394" (10.00 mm)	0.689" (17.50 mm)	0.197" (5.00 mm)	Not For New Designs
URS1H331MHD	Nichicon	330 µF	50 V	±20%	-40°C ~ 85°C	2000 Hrs @ 85°C	0.492" (12.50 mm)	0.551" (14.00 mm)	0.197" (5.00 mm)	Active
UVR1H331MPD1CV	Nichicon	330 µF	50 V	±20%	-40°C ~ 85°C	2000 Hrs @ 85°C	0.394" (10.00 mm)	0.689" (17.50 mm)	0.197" (5.00 mm)	Active
337CKE050M	Cornell Dubilier / Illinois Capacitor	330 µF	50 V	±20%	-40°C ~ 105°C	2000 Hrs @ 105°C	0.394" (10.00 mm)	0.689" (17.50 mm)	0.197" (5.00 mm)	Active
50PX330MEFC10X16	Rubycon	330 µF	50 V	±20%	-55°C ~ 105°C	2000 Hrs @ 105°C	0.394" (10.00 mm)	0.689" (17.50 mm)	0.197" (5.00 mm)	Active
B41821A6337M000	EPCOS - TDK Electronics	330 µF	50 V	±20%	-40°C ~ 85°C	2000 Hrs @ 85°C	0.394" (10.00 mm)	0.669" (17.00 mm)	0.197" (5.00 mm)	Active
B41851A6337M000	EPCOS - TDK Electronics	330 µF	50 V	±20%	-40°C ~ 105°C	2000 Hrs @ 105°C	0.394" (10.00 mm)	0.669" (17.00 mm)	0.197" (5.00 mm)	Active
ECA-1HHG331	Panasonic Electronic Components	330 µF	50 V	±20%	-55°C ~ 105°C	2000 Hrs @ 105°C	0.394" (10.00 mm)	0.669" (17.00 mm)	0.197" (5.00 mm)	Active
EEU-HD1H331	Panasonic Electronic Components	330 µF	50 V	±20%	-55°C ~ 105°C	2000 Hrs @ 105°C	0.394" (10.00 mm)	0.689" (17.50 mm)	0.197" (5.00 mm)	Active
EKMQ500ELL331MJ16S	Chemi-Con	330 µF	50 V	±20%	-55°C ~ 105°C	2000 Hrs @ 105°C	0.394" (10.00 mm)	0.689" (17.50 mm)	0.197" (5.00 mm)	Active

Engineering Selection Recommendations

Direct Parametric Equivalent: UVR1H331MPD1CV is the primary equivalent, manufactured by Nichicon in the same UVR series. This part maintains identical electrical specifications and physical dimensions while holding Active product status, ensuring continued availability and manufacturing support.

Upgrade Options with Enhanced Thermal Performance: Parts rated for 2000 Hrs @ 105°C (UKA1H331MPD, 337CKE050M, 50PX330MEFC10X16, B41851A6337M000, ECA-1HHG331, EEU-HD1H331, EKMQ500ELL331MJ16S) provide extended operating temperature ranges and improved lifetime ratings. These upgrades are suitable for applications requiring enhanced reliability in elevated thermal environments while maintaining identical electrical characteristics and lead spacing.

Active Product Status Consideration: URS1H331MHD, 337CKE050M, 50PX330MEFC10X16, B41821A6337M000, B41851A6337M000, ECA-1HHG331, EEU-HD1H331, and EKMQ500ELL331MJ16S all carry Active product status, indicating ongoing manufacturing support and long-term availability. These parts are preferred for new procurement and system redesigns.

RoHS3 Compliance: All listed substitute parts maintain ROHS3 compliance, meeting environmental and regulatory requirements equivalent to the original UVR1H331MPD.

Frequently Asked Questions (FAQ)

Q: Can URS1H331MHD be used as a direct replacement for UVR1H331MPD? A: URS1H331MHD is electrically equivalent but has different physical dimensions. The diameter is 0.492" (12.50 mm) versus 0.394" (10.00 mm) for the original part, and the height is 0.551" (14.00 mm) versus 0.689" (17.50 mm). Lead spacing remains identical at 0.197" (5.00 mm). Physical space constraints in the PCB layout must be evaluated before substitution.

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 have enhanced thermal stability and are suitable for applications with higher ambient temperatures or higher internal heat dissipation. Both ratings meet the same 2000-hour specification but at different temperature thresholds.

Q: Are all substitute parts pin-compatible with the original UVR1H331MPD? A: All listed parts maintain the same lead spacing of 0.197" (5.00 mm) and through-hole mounting type, ensuring PCB footprint compatibility. However, physical dimensions (diameter and height) vary among manufacturers. Verify that the component body fits within the available PCB space before final selection.

Q: Which substitute part offers the best long-term availability? A: Parts with Active product status (URS1H331MHD, 337CKE050M, 50PX330MEFC10X16, B41821A6337M000, B41851A6337M000, ECA-1HHG331, EEU-HD1H331, EKMQ500ELL331MJ16S) are actively manufactured and supported by their respective suppliers, providing superior long-term procurement reliability compared to Not For New Designs classifications.

Q: Can I substitute a part with a wider operating temperature range? A: Yes. Parts with extended operating temperature ranges (e.g., -55°C to 105°C versus -40°C to 85°C) are fully compatible substitutes. The wider range provides additional design margin and is not detrimental to circuit performance in applications operating within the original temperature specification.

Q: What role does ESR (Equivalent Series Resistance) play in substitution? A: ESR affects ripple current handling and thermal performance. Parts with specified ESR values (337CKE050M at 502 mOhm @ 120 Hz, B41821A6337M000 and B41851A6337M000 at 600 mOhm @ 120 Hz) provide measurable performance characteristics. For applications where ESR is not a critical design parameter, parts without specified ESR values are acceptable substitutes.

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