UVK2A331MHD1TO Equivalent & Substitute Parts

Part Overview

The UVK2A331MHD1TO 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 general-purpose applications. The part carries a "Not For New Designs" status, making identification of equivalent alternatives essential 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
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 Radial
Package Type	Radial, Can
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the UVK2A331MHD1TO is determined by strict electrical and mechanical parameter matching:

Critical Matching Parameters:

Capacitance: 330 µF (exact match required)
Voltage Rating: 100 V (exact match required)
Tolerance: ±20% (exact match required)
Lifetime: 2000 Hrs @ 85°C (exact match required)
Operating Temperature: -40°C ~ 85°C (exact match required)
Lead Spacing: 0.197" (5.00 mm) (exact match required)
Case Diameter: 0.492" (12.50 mm) (exact match required)
Height: 1.063" (27.00 mm) (exact match required)
Mounting Type: Through Hole Radial (exact match required)
Package Type: Radial, Can (exact match required)
RoHS Compliance: ROHS3 Compliant (exact match required)

All three substitute parts meet these criteria and are therefore electrically and mechanically interchangeable with the UVK2A331MHD1TO.

Parameter Comparison

Parameter	UVK2A331MHD1TO	UFW2A331MHD1TO	UVR2A331MHD1TO	ECA-2AM331B
Manufacturer	Nichicon	Nichicon	Nichicon	Panasonic Electronic Components
Series	UVK	UFW	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 @ Temp.	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
Lead Spacing	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)
Case Diameter	0.492" (12.50 mm)	0.492" (12.50 mm)	0.492" (12.50 mm)	0.492" (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	760 mA	750 mA	760 mA	700 mA
Ripple Current @ 10 kHz	1.14 A	1.125 A	1.14 A	1.19 A
Inventory Status	1110 Pcs New Original In Stock	1282 Pcs New Original In Stock	1421 Pcs New Original In Stock	1080 Pcs New Original In Stock

Engineering Selection Recommendations

All three substitute parts are electrically and mechanically equivalent to the UVK2A331MHD1TO based on matching critical parameters. Selection should be based on the following factors:

Product Status Consideration: The ECA-2AM331B carries an "Active" product status, whereas the UVK2A331MHD1TO, UFW2A331MHD1TO, and UVR2A331MHD1TO are all designated "Not For New Designs." For applications requiring long-term component availability and support, the ECA-2AM331B from Panasonic Electronic Components is the preferred choice.

Manufacturer Continuity: If maintaining a single-manufacturer supply chain is a requirement, the UFW2A331MHD1TO and UVR2A331MHD1TO remain within the Nichicon product family and provide direct compatibility.

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

Frequently Asked Questions (FAQ)

Q: Can UFW2A331MHD1TO be used as a direct replacement for UVK2A331MHD1TO?

A: Yes. Both parts share identical electrical specifications (330 µF, 100 V, ±20% tolerance, 2000 Hrs @ 85°C) and mechanical dimensions (0.197" lead spacing, 0.492" diameter, 1.063" height). The UFW series is optimized for audio applications, while the UVK is general-purpose, but this distinction does not affect electrical interchangeability.

Q: What is the difference between UVR2A331MHD1TO and UVK2A331MHD1TO?

A: The UVR2A331MHD1TO is a parametric equivalent with identical electrical and mechanical specifications. Both are Nichicon products with "Not For New Designs" status. The primary difference is the internal series designation (UVR vs. UVK), which does not affect circuit performance or physical compatibility.

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

A: The ECA-2AM331B carries an "Active" product status from Panasonic Electronic Components, indicating ongoing manufacturing and support. The Nichicon alternatives (UVK, UFW, UVR series) are all designated "Not For New Designs," which may impact long-term availability. However, all four parts are electrically and mechanically interchangeable.

Q: Are there any ripple current differences between these parts?

A: Minor variations exist in ripple current specifications. The UVK2A331MHD1TO and UVR2A331MHD1TO both specify 760 mA @ 120 Hz and 1.14 A @ 10 kHz. The UFW2A331MHD1TO specifies 750 mA @ 120 Hz and 1.125 A @ 10 kHz. The ECA-2AM331B specifies 700 mA @ 120 Hz and 1.19 A @ 10 kHz. These variations are within acceptable tolerances for general-purpose and audio applications and do not prevent substitution.

Q: Can these parts be used interchangeably on the same PCB?

A: Yes. All four parts have identical lead spacing (0.197" / 5.00 mm), case diameter (0.492" / 12.50 mm), and seated height (1.063" / 27.00 mm). They mount identically in through-hole radial configurations and require no PCB layout modifications.

Q: What is the REACH and RoHS compliance status?

A: All four parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing and distribution.

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