Nichicon UVR1C331MPA 330µF 16V Radial Aluminum Electrolytic Capacitor - Equivalent & Substitute Parts

Part Overview

The Nichicon UVR1C331MPA is a 330µF, 16V radial aluminum electrolytic capacitor rated for 2000 hours at 85°C. This part carries an Obsolete product status, making it necessary to identify equivalent and substitute components for ongoing design support and procurement. The UVR series represents legacy technology; modern designs should transition to active product lines offering improved reliability, extended operating temperature ranges, and enhanced compliance certifications.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	16 V
Tolerance	±20%
Lifetime @ Temperature	2000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Ripple Current @ 120 Hz	370 mA
Ripple Current @ 10 kHz	555 mA
Lead Spacing	0.138" (4.60mm)
Case Diameter	0.315" (8.00mm)
Height	0.453" (11.50mm)
Mounting Type	Through Hole Radial
RoHS Status	Non-compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following critical parameters:

Electrical Match: Capacitance (330µF), voltage rating (16V), and tolerance (±20%) must be identical
Physical Compatibility: Lead spacing (4.60mm), case diameter (8.00mm), and height must accommodate PCB layout constraints
Thermal Performance: Lifetime rating and operating temperature range determine suitability for specific thermal environments
Mounting Configuration: Through-hole radial package with identical lead spacing ensures direct PCB compatibility

Substitute parts are categorized as follows:

Direct Equivalents (Nichicon UVR Series variants): Identical electrical and mechanical specifications with packaging variations.

Upgraded Alternatives (Nichicon UFW, UKW, UPW, UHE Series): Enhanced thermal performance, extended temperature ranges, or improved ripple current handling while maintaining core electrical parameters and physical footprint.

Cross-Manufacturer Equivalents (Panasonic FC, ECA-1CM Series; Cornell Dubilier SK Series): Alternative manufacturers offering identical or superior specifications with active product status and modern compliance certifications.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Lifetime @ Temp	Operating Temp Range	Lead Spacing	Height	Ripple Current @ 120Hz	Product Status	RoHS Status
UVR1C331MPA	Nichicon	330µF	16V	2000 Hrs @ 85°C	-40°C ~ 85°C	4.60mm	11.50mm	370 mA	Obsolete	Non-compliant
UVR1C331MPD	Nichicon	330µF	16V	2000 Hrs @ 85°C	-40°C ~ 85°C	4.60mm	13.00mm	370 mA	Not For New Designs	ROHS3 Compliant
UFW1C331MPD	Nichicon	330µF	16V	2000 Hrs @ 85°C	-40°C ~ 85°C	4.60mm	11.50mm	360 mA	Not For New Designs	ROHS3 Compliant
UHE1C331MPD	Nichicon	330µF	16V	7000 Hrs @ 105°C	-40°C ~ 105°C	4.60mm	11.50mm	448 mA	Not For New Designs	ROHS3 Compliant
UKW1C331MPD	Nichicon	330µF	16V	2000 Hrs @ 85°C	-40°C ~ 85°C	4.60mm	11.50mm	360 mA	Not For New Designs	ROHS3 Compliant
UPW1C331MPD	Nichicon	330µF	16V	3000 Hrs @ 105°C	-55°C ~ 105°C	4.60mm	11.50mm	360.75 mA	Not For New Designs	ROHS3 Compliant
EEU-FC1C331	Panasonic	330µF	16V	2000 Hrs @ 105°C	-55°C ~ 105°C	4.60mm	11.50mm	360.8 mA	Active	ROHS3 Compliant
ECA-1CM331	Panasonic	330µF	16V	2000 Hrs @ 85°C	-40°C ~ 85°C	4.60mm	12.50mm	—	Active	ROHS3 Compliant
ECA-1CM331B	Panasonic	330µF	16V	2000 Hrs @ 85°C	-40°C ~ 85°C	5.00mm	12.50mm	595 mA	Active	ROHS3 Compliant
ECA-1CM331BJ	Panasonic	330µF	16V	2000 Hrs @ 85°C	-40°C ~ 85°C	4.60mm	12.50mm	595 mA	Active	ROHS3 Compliant
SK331M016ST	Cornell Dubilier	330µF	16V	2000 Hrs @ 85°C	-40°C ~ 85°C	4.60mm	14.60mm	—	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Same Thermal Environment):

UFW1C331MPD and UKW1C331MPD maintain identical physical footprint (11.50mm height) and thermal rating (2000 Hrs @ 85°C) as the original UVR1C331MPA. Both are ROHS3 compliant and suitable for applications with -40°C to 85°C operating requirements. UFW series targets audio applications; UKW series provides general-purpose performance.

For Enhanced Thermal Performance:

UHE1C331MPD extends lifetime to 7000 hours at 105°C and supports operating temperatures to 105°C, providing superior reliability in elevated-temperature environments. UPW1C331MPD offers 3000 hours at 105°C with extended lower temperature range (-55°C to 105°C), suitable for industrial and automotive applications requiring wider thermal margins.

For Active Product Status and Cross-Manufacturer Sourcing:

EEU-FC1C331 (Panasonic) is an active product with AEC-Q200 automotive qualification, 2000 hours at 105°C rating, and identical physical footprint. This part is recommended for new designs requiring automotive-grade reliability and modern compliance certifications.

ECA-1CM331BJ (Panasonic) maintains active status with identical electrical specifications and 4.60mm lead spacing. Height increases to 12.50mm; verify PCB layout clearance before selection.

SK331M016ST (Cornell Dubilier) provides active product status with ROHS3 compliance. Height reaches 14.60mm; confirm mechanical fit within enclosure constraints.

For Legacy System Support:

UVR1C331MPD (Nichicon) is marked "Not For New Designs" but remains available with ROHS3 compliance and bulk packaging. This part bridges obsolete UVR1C331MPA inventory gaps for repair and maintenance applications.

Frequently Asked Questions (FAQ)

Q: Can UVR1C331MPA be directly replaced with UFW1C331MPD or UKW1C331MPD?

A: Yes. Both parts maintain identical capacitance (330µF), voltage rating (16V), lead spacing (4.60mm), and height (11.50mm). Thermal ratings are equivalent (2000 Hrs @ 85°C). Physical PCB compatibility is confirmed. Both are ROHS3 compliant.

Q: What is the difference between UHE1C331MPD and UPW1C331MPD?

A: UHE1C331MPD provides 7000 hours at 105°C with operating range -40°C to 105°C. UPW1C331MPD provides 3000 hours at 105°C with extended lower temperature range (-55°C to 105°C). Both maintain identical physical footprint. Select UHE for high-temperature stability; select UPW for wide temperature range applications.

Q: Why does ECA-1CM331B have 5.00mm lead spacing while others use 4.60mm?

A: ECA-1CM331B is packaged with 5.00mm lead spacing for different PCB layouts. This part is not a direct replacement for UVR1C331MPA (4.60mm spacing). Verify PCB hole pattern compatibility before selection. ECA-1CM331BJ maintains 4.60mm spacing and is directly compatible.

Q: Is EEU-FC1C331 suitable for automotive applications?

A: Yes. EEU-FC1C331 carries AEC-Q200 automotive qualification, ROHS3 compliance, and 2000 hours at 105°C rating. It is an active Panasonic product recommended for automotive and industrial designs requiring modern certifications.

Q: What is the height difference between UVR1C331MPA and ECA-1CM331BJ?

A: UVR1C331MPA height is 11.50mm; ECA-1CM331BJ height is 12.50mm. The 1.00mm increase requires verification of PCB clearance and enclosure fit. Lead spacing remains compatible at 4.60mm.

Q: Can I use SK331M016ST as a direct replacement?

A: SK331M016ST (Cornell Dubilier) matches electrical specifications and lead spacing (4.60mm) but has 14.60mm height versus 11.50mm original. Confirm mechanical clearance within your assembly before substitution. Part is active with ROHS3 compliance.

Q: Why is UVR1C331MPA marked Obsolete?

A: The UVR series represents legacy Nichicon technology. Modern equivalent series (UFW, UKW, UPW, UHE) offer ROHS3 compliance, extended thermal ratings, and improved reliability. New designs should transition to active product lines. Existing inventory of UVR1C331MPA remains available for legacy system support.

Q: What does "Not For New Designs" mean for UFW1C331MPD, UKW1C331MPD, UPW1C331MPD, and UHE1C331MPD?

A: These parts are mature products no longer recommended for new circuit designs but remain available for production and maintenance. They are fully functional, ROHS3 compliant, and suitable for existing applications. For new designs, prioritize active products such as EEU-FC1C331 (Panasonic) or ECA-1CM331BJ (Panasonic).

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