UVR2C331MRD6 Equivalent & Substitute Parts

Part Overview

The UVR2C331MRD6 is a 330 µF, 160 V aluminum electrolytic capacitor in radial, can package manufactured by Nichicon. This component is classified as obsolete, making identification of equivalent substitute parts essential for ongoing system support and component procurement. The part operates across a temperature range of -40°C to 85°C with a rated lifetime of 2000 hours at 85°C, serving general-purpose applications requiring stable capacitance and ripple current handling.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	160 V
Tolerance	±20%
Lifetime @ Temperature	2000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°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 (Seated Max)	1.260" (32.00 mm)

Substitute Part Grouping Explanation

Substitute parts for the UVR2C331MRD6 are qualified based on the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

Capacitance: 330 µF (exact match required)
Voltage Rating: 160 V (exact match required)
Tolerance: ±20% (exact match required)
Lifetime: 2000 Hrs @ 85°C (exact match required)
Polarization: Polar (exact match required)

Mechanical Compatibility Criteria:

Mounting Type: Through Hole (exact match required)
Package Type: Radial, Can (exact match required)
Lead Spacing: Tolerance for PCB layout accommodation
Physical Dimensions: Diameter and height within acceptable board space constraints

Compliance Criteria:

RoHS3 Compliance (all candidates meet this requirement)
REACH Status: REACH Unaffected (all candidates meet this requirement)

The identified substitute parts meet all electrical specifications and maintain through-hole radial can packaging. Variations in lead spacing and physical dimensions must be evaluated against specific PCB layout requirements.

Parameter Comparison

Parameter	UVR2C331MRD6 (Nichicon)	ECA-2CM331 (Panasonic)	ESMG161ELL331MMP1S (Chemi-Con)
Capacitance	330 µF	330 µF	330 µF
Voltage Rating	160 V	160 V	160 V
Tolerance	±20%	±20%	±20%
Lifetime @ Temperature	2000 Hrs @ 85°C	2000 Hrs @ 85°C	2000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C	-25°C ~ 85°C	-40°C ~ 85°C
Polarization	Polar	Polar	Polar
Mounting Type	Through Hole	Through Hole	Through Hole
Package Type	Radial, Can	Radial, Can	Radial, Can
Lead Spacing	0.394" (10.00 mm)	0.295" (7.50 mm)	0.295" (7.50 mm)
Diameter	0.866" (22.00 mm)	0.709" (18.00 mm)	0.709" (18.00 mm)
Height (Seated Max)	1.260" (32.00 mm)	1.319" (34.60 mm)	1.457" (37.00 mm)
Ripple Current @ 120 Hz	900 mA	1.09 A	995 mA
Ripple Current @ High Frequency	1.035 A @ 10 kHz	1.853 A @ 10 kHz	1.4925 A @ 100 kHz
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Obsolete	Active

Engineering Selection Recommendations

ECA-2CM331 (Panasonic Electronic Components)

This part meets all electrical specifications and maintains RoHS3 compliance. The operating temperature range is -25°C to 85°C, which is narrower than the original part's -40°C to 85°C range. Physical dimensions are smaller (18.00 mm diameter vs. 22.00 mm), and lead spacing is reduced to 7.50 mm. The part is classified as obsolete. Selection requires PCB layout verification to accommodate the reduced lead spacing and smaller footprint.

ESMG161ELL331MMP1S (Chemi-Con)

This part satisfies all electrical requirements with matching operating temperature range (-40°C to 85°C) and RoHS3 compliance. The product status is active, providing better long-term availability compared to obsolete alternatives. Physical dimensions are smaller (18.00 mm diameter), and lead spacing is 7.50 mm. Height is greater at 37.00 mm maximum. PCB layout compatibility must be confirmed before selection.

Both substitute parts deliver equivalent electrical performance within the specified parameters. Selection between them depends on PCB layout constraints, availability requirements, and operating temperature range needs.

Frequently Asked Questions (FAQ)

Q: Can ECA-2CM331 or ESMG161ELL331MMP1S be used as direct replacements for UVR2C331MRD6?

A: Both parts match the electrical specifications (330 µF, 160 V, ±20%, 2000 Hrs @ 85°C). However, physical dimensions and lead spacing differ. ECA-2CM331 and ESMG161ELL331MMP1S have 7.50 mm lead spacing compared to the original 10.00 mm spacing. PCB layout must accommodate these dimensional changes before substitution.

Q: What is the difference in operating temperature range between these parts?

A: UVR2C331MRD6 and ESMG161ELL331MMP1S both operate from -40°C to 85°C. ECA-2CM331 operates from -25°C to 85°C, which is a narrower range. If the application requires operation below -25°C, ECA-2CM331 is not suitable.

Q: Why do the substitute parts have different physical dimensions?

A: Manufacturers design capacitors with different case sizes while maintaining the same electrical ratings. The substitute parts use smaller diameter cans (18.00 mm vs. 22.00 mm) but may have different heights. These dimensional variations require PCB layout verification.

Q: Which substitute part has better availability?

A: ESMG161ELL331MMP1S (Chemi-Con) is classified as active, indicating current production and better long-term availability. ECA-2CM331 (Panasonic) is obsolete, similar to the original part.

Q: Are all parts RoHS3 compliant?

A: Yes. UVR2C331MRD6, ECA-2CM331, and ESMG161ELL331MMP1S are all RoHS3 compliant and REACH unaffected.

Q: How do ripple current ratings compare?

A: All parts handle ripple current within acceptable ranges for general-purpose applications. ECA-2CM331 and ESMG161ELL331MMP1S show higher ripple current capacity at high frequencies compared to the original part, providing additional design margin.

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