Equivalent & Substitute Parts for UVZ2A331MHH

Part Overview

The Nichicon UVZ2A331MHH is a 330 µF, 100 V aluminum electrolytic capacitor in radial, can package rated for 2000 hours at 105°C. This component is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. The UVZ series has been superseded by newer product lines while maintaining the same electrical and mechanical specifications across multiple manufacturers.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	100 V
Tolerance	±20%
Lifetime	2000 Hrs @ 105°C
Operating Temperature Range	-55°C to 105°C
Lead Spacing	0.197" (5.00 mm)
Case Diameter	0.492" (12.50 mm)
Mounting Type	Through Hole
Package Type	Radial, Can

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters: capacitance (330 µF), voltage rating (100 V), tolerance (±20%), lifetime rating (2000 Hrs @ 105°C), operating temperature range (-55°C to 105°C), lead spacing (0.197" / 5.00 mm), case diameter (0.492" / 12.50 mm), and through-hole radial mounting configuration.

Substitute parts are grouped into three categories:

Parametric Equivalent: UVY2A331MHD (Nichicon) — identical electrical and mechanical specifications with updated product status and RoHS3 compliance.

Direct Equivalents: 100PX330MEFC12.5X25 (Rubycon), EKMQ101ELL331MK25S (Chemi-Con), and EKMQ101ETD331MK25S (Chemi-Con) — meet all core electrical parameters with active product status and RoHS3 compliance. Minor variations in ripple current performance and case height (26.50 mm vs. 27.00 mm) remain within functional tolerance.

Similar Equivalent: ECA-2AHG331 (Panasonic Electronic Components) — meets all electrical specifications but features different lead spacing (0.295" / 7.50 mm) and case diameter (0.630" / 16.00 mm), requiring PCB layout verification before substitution.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lifetime	Lead Spacing	Case Diameter	Height (Max)	Ripple Current @ 120 Hz	Ripple Current @ 10/100 kHz	Product Status	RoHS Status
UVZ2A331MHH	Nichicon	330 µF	100 V	±20%	2000 Hrs @ 105°C	0.197" (5.00 mm)	0.492" (12.50 mm)	1.063" (27.00 mm)	540 mA	810 mA @ 10 kHz	Obsolete	Non-compliant
UVY2A331MHD	Nichicon	330 µF	100 V	±20%	2000 Hrs @ 105°C	0.197" (5.00 mm)	0.492" (12.50 mm)	1.063" (27.00 mm)	540 mA	810 mA @ 10 kHz	Not For New Designs	RoHS3 Compliant
100PX330MEFC12.5X25	Rubycon	330 µF	100 V	±20%	2000 Hrs @ 105°C	0.197" (5.00 mm)	0.492" (12.50 mm)	1.043" (26.50 mm)	690 mA	828 mA @ 10 kHz	Active	RoHS3 Compliant
EKMQ101ELL331MK25S	Chemi-Con	330 µF	100 V	±20%	2000 Hrs @ 105°C	0.197" (5.00 mm)	0.492" (12.50 mm)	1.043" (26.50 mm)	540 mA	810 mA @ 100 kHz	Active	RoHS3 Compliant
EKMQ101ETD331MK25S	Chemi-Con	330 µF	100 V	±20%	2000 Hrs @ 105°C	0.197" (5.00 mm)	0.492" (12.50 mm)	1.043" (26.50 mm)	540 mA	810 mA @ 100 kHz	Active	RoHS3 Compliant
ECA-2AHG331	Panasonic Electronic Components	330 µF	100 V	±20%	2000 Hrs @ 105°C	0.295" (7.50 mm)	0.630" (16.00 mm)	1.063" (27.00 mm)	540 mA	810 mA @ 100 kHz	Active	RoHS3 Compliant

Engineering Selection Recommendations

For new designs and ongoing production, select from active product status components with RoHS3 compliance: 100PX330MEFC12.5X25 (Rubycon), EKMQ101ELL331MK25S (Chemi-Con), or EKMQ101ETD331MK25S (Chemi-Con). These parts maintain identical electrical performance and mechanical compatibility with the original UVZ2A331MHH footprint.

UVY2A331MHD (Nichicon) is suitable for legacy system maintenance where Nichicon sourcing is preferred, though marked as not for new designs. This part provides direct form-factor compatibility and RoHS3 compliance.

ECA-2AHG331 (Panasonic Electronic Components) requires PCB layout verification due to different lead spacing (7.50 mm vs. 5.00 mm) and case diameter (16.00 mm vs. 12.50 mm). Use only when PCB footprint accommodates the larger package dimensions.

Frequently Asked Questions (FAQ)

Q: Can I substitute UVZ2A331MHH with any of these parts directly?

A: Direct substitution is possible for 100PX330MEFC12.5X25, EKMQ101ELL331MK25S, EKMQ101ETD331MK25S, and UVY2A331MHD without PCB modification. These maintain identical lead spacing (5.00 mm) and case diameter (12.50 mm). ECA-2AHG331 requires PCB layout verification due to larger package dimensions.

Q: What is the difference between the Chemi-Con KMQ series parts?

A: EKMQ101ELL331MK25S and EKMQ101ETD331MK25S are both Chemi-Con KMQ series with identical electrical specifications. The difference lies in internal construction or packaging designation. Both are active products with RoHS3 compliance and meet all substitution criteria.

Q: Why does the Rubycon 100PX330MEFC12.5X25 have higher ripple current ratings?

A: Ripple current performance varies by manufacturer design and internal construction. The Rubycon part demonstrates higher ripple current capability (690 mA @ 120 Hz, 828 mA @ 10 kHz) compared to the original specification (540 mA @ 120 Hz, 810 mA @ 10 kHz). This represents improved performance and does not affect compatibility.

Q: Is the height difference between 27.00 mm and 26.50 mm significant?

A: The 0.50 mm height reduction in 100PX330MEFC12.5X25, EKMQ101ELL331MK25S, and EKMQ101ETD331MK25S is within standard mechanical tolerance and does not affect PCB assembly or component clearance in typical applications.

Q: Can I use ECA-2AHG331 as a drop-in replacement?

A: No. ECA-2AHG331 requires PCB layout modification. Lead spacing increases from 5.00 mm to 7.50 mm, and case diameter increases from 12.50 mm to 16.00 mm. Verify PCB footprint compatibility before selection.

Q: What is the inventory status for these substitutes?

A: 100PX330MEFC12.5X25 (Rubycon) has the highest inventory at 4200 pieces. UVY2A331MHD (Nichicon) has 1533 pieces. ECA-2AHG331 (Panasonic) has 1423 pieces. EKMQ101ETD331MK25S (Chemi-Con) has 665 pieces. EKMQ101ELL331MK25S (Chemi-Con) has 2200 pieces.

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