UVR2A331MHD1TO Equivalent & Substitute Parts

Part Overview

The UVR2A331MHD1TO is a 330 µF, 100 V aluminum electrolytic capacitor in radial configuration manufactured by Nichicon. This component is rated for 2000 hours at 85°C and is classified as not for new designs. Finding equivalent and substitute parts is necessary due to product status discontinuation and to ensure design flexibility across manufacturing sources while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	100 V
Tolerance	±20%
Lifetime	2000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Lead Spacing	0.197" (5.00 mm)
Case Diameter	0.492" (12.50 mm)
Height (Seated Max)	1.063" (27.00 mm)
Mounting Type	Through Hole
Package Type	Radial, Can

Substitute Part Grouping Explanation

Substitute parts for the UVR2A331MHD1TO are qualified based on strict electrical and mechanical parameter matching:

Electrical Parameters (Must Match):

Capacitance: 330 µF
Voltage Rating: 100 V
Tolerance: ±20%
Lifetime: 2000 Hrs @ 85°C
Operating Temperature: -40°C ~ 85°C
Polarization: Polar

Mechanical Parameters (Must Match):

Lead Spacing: 0.197" (5.00 mm)
Case Diameter: 0.492" (12.50 mm)
Height (Seated Max): 1.063" (27.00 mm)
Mounting Type: Through Hole
Package Type: Radial, Can

All substitute parts listed meet these criteria and are therefore direct functional replacements suitable for PCB assembly without design modification.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	Lifetime @ 85°C	Lead Spacing	Case Diameter	Height	Ripple Current @ 120 Hz	Ripple Current @ 10 kHz	Product Status	Inventory
UVR2A331MHD1TO	Nichicon	UVR	330 µF	100 V	±20%	2000 Hrs	0.197" (5.00 mm)	0.492" (12.50 mm)	1.063" (27.00 mm)	760 mA	1.14 A	Not For New Designs	1421 Pcs
UFW2A331MHD1TO	Nichicon	UFW	330 µF	100 V	±20%	2000 Hrs	0.197" (5.00 mm)	0.492" (12.50 mm)	1.063" (27.00 mm)	750 mA	1.125 A	Not For New Designs	1282 Pcs
UVK2A331MHD1TO	Nichicon	UVK	330 µF	100 V	±20%	2000 Hrs	0.197" (5.00 mm)	0.492" (12.50 mm)	1.063" (27.00 mm)	760 mA	1.14 A	Not For New Designs	1110 Pcs
ECA-2AM331B	Panasonic Electronic Components	M-A	330 µF	100 V	±20%	2000 Hrs	0.197" (5.00 mm)	0.492" (12.50 mm)	1.063" (27.00 mm)	700 mA	1.19 A	Active	1080 Pcs

Engineering Selection Recommendations

All listed substitute parts meet the electrical and mechanical specifications of the UVR2A331MHD1TO. Selection should be based on the following factors:

Product Status: The ECA-2AM331B (Panasonic) carries Active product status, making it the preferred choice for new designs and long-term availability assurance. The Nichicon alternatives (UFW2A331MHD1TO and UVK2A331MHD1TO) are classified as not for new designs, similar to the main part.

Compliance: All parts are ROHS3 compliant, REACH unaffected, and carry EAR99 classification, meeting standard regulatory requirements for industrial and commercial applications.

Ripple Current Performance: Ripple current specifications vary slightly across parts. The ECA-2AM331B provides 1.19 A at 10 kHz, while the UVR2A331MHD1TO and UVK2A331MHD1TO provide 1.14 A at the same frequency. The UFW2A331MHD1TO provides 1.125 A at 10 kHz. These variations remain within acceptable operating parameters for general purpose and audio applications.

Frequently Asked Questions (FAQ)

Q: Can UFW2A331MHD1TO replace UVR2A331MHD1TO directly?

A: Yes. Both parts share identical electrical ratings (330 µF, 100 V, ±20%, 2000 Hrs @ 85°C) and mechanical dimensions (lead spacing 5.00 mm, case diameter 12.50 mm, height 27.00 mm). The UFW series is optimized for audio applications, while the UVR series is general purpose, but electrical and mechanical compatibility is complete.

Q: What is the difference between UVK2A331MHD1TO and UVR2A331MHD1TO?

A: Both parts are Nichicon products with identical electrical specifications and mechanical dimensions. The primary difference is the internal series designation (UVK versus UVR). Both are rated for 2000 hours at 85°C and are not for new designs. They are fully interchangeable.

Q: Why is ECA-2AM331B recommended over Nichicon alternatives?

A: The ECA-2AM331B carries Active product status, indicating ongoing manufacturing and availability. The Nichicon parts (UVR, UFW, UVK series) are classified as not for new designs. For applications requiring long-term component availability and supply chain stability, the Panasonic part is the preferred selection.

Q: Are there mechanical compatibility concerns when substituting these parts?

A: No. All substitute parts share identical lead spacing (5.00 mm), case diameter (12.50 mm), and seated height (27.00 mm). PCB footprints and through-hole mounting patterns are identical across all listed parts.

Q: Do ripple current differences affect part selection?

A: Ripple current specifications are provided for reference. All parts meet the 2000-hour lifetime specification at 85°C. Ripple current variations (700–760 mA @ 120 Hz and 1.125–1.19 A @ 10 kHz) are minor and do not affect functional interchangeability for general purpose and audio applications.

Q: What compliance certifications apply to all substitute parts?

A: All parts are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes. Moisture sensitivity level is not applicable to these radial can packages.

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