UVY2A331MHD Equivalent & Substitute Parts

Part Overview

The UVY2A331MHD is a 330 µF, 100 V aluminum electrolytic capacitor in radial, can package manufactured by Nichicon. This component is classified as Not For New Designs, indicating it has been superseded in Nichicon's product line. The UVY series offers a 2000-hour lifetime rating at 105°C with general-purpose applications. Finding equivalent and substitute parts is necessary for legacy system maintenance, repair operations, and design continuity where existing inventory is depleted or unavailable.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	100 V
Tolerance	±20%
Lifetime @ 105°C	2000 Hrs
Operating Temperature Range	-55°C ~ 105°C
Polarization	Polar
Package Type	Radial, Can
Mounting Type	Through Hole
Lead Spacing	0.197" (5.00mm)
Diameter	0.492" (12.50mm)
Height	1.063" (27.00mm)
Ripple Current @ 120 Hz	540 mA
Ripple Current @ 10 kHz	810 mA

Substitute Part Grouping Explanation

Substitution eligibility for the UVY2A331MHD is determined by the following mandatory parameters:

Capacitance: 330 µF (exact match required)
Voltage Rating: 100 V (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)
Package Type: Radial, Can (exact match required)
Mounting Type: Through Hole (exact match required)
Operating Temperature Range: -55°C ~ 105°C (exact match required)

Substitute parts are grouped into two categories:

Category 1: Nichicon Series Substitutes (Same Manufacturer) Parts from Nichicon's UPJ, UPM, UPS, UPW, and URZ series meet all mandatory electrical parameters. These substitutes differ in lifetime ratings (ranging from 1000 to 8000 hours at 105°C), physical dimensions, and ripple current capabilities. The UPW2A331MHD offers the longest operational life at 8000 hours. The UPM2A331MHD6 includes AEC-Q200 automotive qualification.

Category 2: Cross-Manufacturer Substitutes Parts from Rubycon (100PX330MEFC12.5X25), Chemi-Con (EKMQ101ETD331MK25S, EKMQ101ELL331MK25S), and Panasonic (ECA-2AHG331) meet all mandatory electrical and mechanical parameters. These maintain identical lead spacing, diameter, and height specifications as the original UVY2A331MHD.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Lifetime @ 105°C	Lead Spacing	Diameter	Height	Ripple Current @ 120 Hz	Product Status
UVY2A331MHD	Nichicon	UVY	330 µF	100 V	2000 Hrs	0.197" (5.00mm)	0.492" (12.50mm)	1.063" (27.00mm)	540 mA	Not For New Designs
UPJ2A331MHD	Nichicon	UPJ	330 µF	100 V	5000 Hrs	0.295" (7.50mm)	0.630" (16.00mm)	1.299" (33.00mm)	1.16 A	Not For New Designs
UPJ2A331MHD6	Nichicon	UPJ	330 µF	100 V	5000 Hrs	0.295" (7.50mm)	0.709" (18.00mm)	1.043" (26.50mm)	1.08 A	Not For New Designs
UPM2A331MHD6	Nichicon	UPM	330 µF	100 V	5000 Hrs	0.295" (7.50mm)	0.709" (18.00mm)	1.063" (27.00mm)	1.26 A	Not For New Designs
UPS2A331MHD	Nichicon	UPS	330 µF	100 V	3000 Hrs	0.295" (7.50mm)	0.630" (16.00mm)	1.063" (27.00mm)	766.8 mA	Not For New Designs
UPW2A331MHD	Nichicon	UPW	330 µF	100 V	8000 Hrs	0.295" (7.50mm)	0.630" (16.00mm)	0.984" (25.00mm)	702 mA	Not For New Designs
URZ2A331MHD	Nichicon	URZ	330 µF	100 V	1000 Hrs	0.295" (7.50mm)	0.709" (18.00mm)	0.650" (16.50mm)	540 mA	Active
100PX330MEFC12.5X25	Rubycon	PX	330 µF	100 V	2000 Hrs	0.197" (5.00mm)	0.492" (12.50mm)	1.043" (26.50mm)	690 mA	Active
EKMQ101ETD331MK25S	Chemi-Con	KMQ	330 µF	100 V	2000 Hrs	0.197" (5.00mm)	0.492" (12.50mm)	1.043" (26.50mm)	540 mA	Active
EKMQ101ELL331MK25S	Chemi-Con	KMQ	330 µF	100 V	2000 Hrs	0.197" (5.00mm)	0.492" (12.50mm)	1.043" (26.50mm)	540 mA	Active
ECA-2AHG331	Panasonic Electronic Components	NHG-A	330 µF	100 V	2000 Hrs	0.295" (7.50mm)	0.630" (16.00mm)	1.063" (27.00mm)	540 mA	Active

Engineering Selection Recommendations

Direct Mechanical Substitutes (No PCB Layout Modification Required)

The 100PX330MEFC12.5X25 (Rubycon), EKMQ101ETD331MK25S, and EKMQ101ELL331MK25S (Chemi-Con) maintain identical lead spacing (0.197", 5.00mm), diameter (0.492", 12.50mm), and comparable height specifications to the UVY2A331MHD. These parts are classified as Active products and are suitable for direct replacement in existing PCB layouts without modification. All three parts are ROHS3 compliant and REACH unaffected.

Extended Lifetime Alternatives (Nichicon Manufacturer)

For applications requiring extended operational life, the UPW2A331MHD offers 8000-hour lifetime at 105°C compared to the original 2000-hour rating. However, this part requires PCB layout modification due to increased lead spacing (0.295", 7.50mm) and larger physical dimensions. The UPW2A331MHD is classified as Not For New Designs but remains available in inventory.

Automotive-Qualified Alternative

The UPM2A331MHD6 includes AEC-Q200 automotive qualification and provides 5000-hour lifetime. This part requires PCB layout modification due to different lead spacing and dimensions but is suitable for automotive applications requiring enhanced reliability standards.

Active Product Status Priority

For new procurement, prioritize parts with Active product status: URZ2A331MHD (Nichicon), 100PX330MEFC12.5X25 (Rubycon), EKMQ101ETD331MK25S and EKMQ101ELL331MK25S (Chemi-Con), and ECA-2AHG331 (Panasonic). These parts ensure long-term availability and manufacturer support.

Frequently Asked Questions (FAQ)

Q: Can I use UPJ2A331MHD or UPS2A331MHD as direct replacements without PCB modification?

A: No. These Nichicon alternatives have different lead spacing (0.295" versus 0.197") and larger physical dimensions than the UVY2A331MHD. PCB layout modification is required for proper mounting.

Q: What is the difference between EKMQ101ETD331MK25S and EKMQ101ELL331MK25S?

A: Both Chemi-Con parts are electrically and mechanically identical with 330 µF capacitance, 100 V rating, 2000-hour lifetime, and matching physical dimensions. They are direct substitutes for each other and for the UVY2A331MHD without PCB modification.

Q: Is the 100PX330MEFC12.5X25 from Rubycon a true equivalent to UVY2A331MHD?

A: Yes. The Rubycon part matches all mandatory electrical parameters (330 µF, 100 V, ±20% tolerance) and maintains identical lead spacing and diameter. Height differs by 0.020" (0.50mm), which is within typical PCB tolerance. This part is Active status and ROHS3 compliant.

Q: Why does UPM2A331MHD6 have REACH Affected status while others are REACH Unaffected?

A: REACH Affected status indicates the part contains substances of concern under REACH regulations but remains compliant. This does not affect electrical or mechanical compatibility. The part is suitable for use in regulated markets with appropriate documentation.

Q: Can I substitute UVY2A331MHD with URZ2A331MHD?

A: Electrically yes, but mechanically no. The URZ2A331MHD has different lead spacing (0.295" versus 0.197"), larger diameter (0.709" versus 0.492"), and significantly shorter height (0.650" versus 1.063"). PCB layout modification is required. However, URZ2A331MHD is the only Nichicon substitute with Active product status.

Q: What is the ripple current difference between UVY2A331MHD and its substitutes?

A: The original UVY2A331MHD handles 540 mA at 120 Hz and 810 mA at 10 kHz. Direct mechanical substitutes (100PX330MEFC12.5X25, EKMQ parts) provide comparable ripple current ratings. Nichicon alternatives with larger physical dimensions (UPJ, UPS, UPW, UPM series) offer higher ripple current capacity, ranging from 702 mA to 1.26 A at 120 Hz, supporting higher-stress applications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification. The UVY2A331MHD original part is also ROHS3 compliant.

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