UFW2A331MHD1TO Equivalent & Substitute Parts

Part Overview

The UFW2A331MHD1TO 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 designed for audio applications. The part carries a "Not For New Designs" status, making equivalent and substitute parts necessary for ongoing production and maintenance applications.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	100 V
Tolerance	±20%
Lifetime @ Temperature	2000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Polarization	Polar
Lead Spacing	0.197" (5.00 mm)
Package / Case	Radial, Can
Mounting Type	Through Hole
Size / Dimension	0.492" Dia (12.50 mm)
Height - Seated (Max)	1.063" (27.00 mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the UFW2A331MHD1TO is determined by strict equivalence across the following parameters:

Capacitance: 330 µF (exact match required)
Voltage Rating: 100 V (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)
Lead Spacing: 0.197" (5.00 mm) (exact match required)
Package / Case: Radial, Can (exact match required)
Mounting Type: Through Hole (exact match required)
Physical Dimensions: 0.492" Dia × 1.063" Height (exact match required)
Operating Temperature Range: -40°C ~ 85°C (exact match required)
Lifetime @ Temperature: 2000 Hrs @ 85°C (exact match required)

All substitute parts listed meet these criteria and are therefore electrically and mechanically interchangeable with the main part.

Parameter Comparison

Parameter	UFW2A331MHD1TO	UVK2A331MHD1TO	UVR2A331MHD1TO	ECA-2AM331B
Manufacturer	Nichicon	Nichicon	Nichicon	Panasonic Electronic Components
Series	UFW	UVK	UVR	M-A
Capacitance	330 µF	330 µF	330 µF	330 µF
Voltage Rating	100 V	100 V	100 V	100 V
Tolerance	±20%	±20%	±20%	±20%
Lifetime @ Temperature	2000 Hrs @ 85°C	2000 Hrs @ 85°C	2000 Hrs @ 85°C	2000 Hrs @ 85°C
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Polarization	Polar	Polar	Polar	Polar
Lead Spacing	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)
Size / Dimension	0.492" Dia (12.50 mm)	0.492" Dia (12.50 mm)	0.492" Dia (12.50 mm)	0.492" Dia (12.50 mm)
Height - Seated (Max)	1.063" (27.00 mm)	1.063" (27.00 mm)	1.063" (27.00 mm)	1.063" (27.00 mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Radial, Can	Radial, Can	Radial, Can	Radial, Can
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Not For New Designs	Not For New Designs	Not For New Designs	Active
Ripple Current @ 120 Hz	750 mA	760 mA	760 mA	700 mA
Ripple Current @ 10 kHz	1.125 A	1.14 A	1.14 A	1.19 A

Engineering Selection Recommendations

All four parts meet the electrical and mechanical requirements for direct substitution. Selection should be based on the following factors:

Product Status Consideration: The ECA-2AM331B (Panasonic) carries an "Active" product status, making it the preferred choice for new production runs and long-term availability. The UFW2A331MHD1TO, UVK2A331MHD1TO, and UVR2A331MHD1TO all carry "Not For New Designs" status and should be reserved for maintenance and legacy system support.

Compliance: All parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.

Inventory Availability: Current stock levels are UVR2A331MHD1TO (1421 Pcs), UFW2A331MHD1TO (1282 Pcs), UVK2A331MHD1TO (1110 Pcs), and ECA-2AM331B (1080 Pcs).

Frequently Asked Questions (FAQ)

Q: Can I use ECA-2AM331B as a direct replacement for UFW2A331MHD1TO?

A: Yes. Both parts share identical electrical specifications (330 µF, 100 V, ±20% tolerance), identical physical dimensions (0.492" diameter, 1.063" height, 5.00 mm lead spacing), and identical thermal ratings (2000 Hrs @ 85°C). They are mechanically and electrically interchangeable.

Q: What is the difference between the Nichicon UFW, UVK, and UVR series?

A: All three series meet the same electrical and mechanical specifications for this 330 µF, 100 V application. The primary difference is application classification: UFW is designated for audio applications, while UVK and UVR are designated for general purpose applications. All carry "Not For New Designs" status.

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

A: The ECA-2AM331B carries an "Active" product status, indicating ongoing manufacturer support and long-term availability. The Nichicon parts (UFW, UVK, UVR series) are marked "Not For New Designs," indicating they are in end-of-life phases.

Q: Are there any differences in ripple current ratings?

A: Minor variations exist in ripple current specifications. At 120 Hz, ratings range from 700 mA (ECA-2AM331B) to 760 mA (UVK and UVR series). At 10 kHz, ratings range from 1.125 A (UFW2A331MHD1TO) to 1.19 A (ECA-2AM331B). These variations do not affect substitutability for applications designed around the UFW2A331MHD1TO specifications.

Q: What packaging format is used for these parts?

A: All parts are supplied in Cut Tape (CT) packaging and are configured as through-hole radial can capacitors with 5.00 mm lead spacing, suitable for PCB insertion and wave soldering processes.

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