UCS2V820MHD Equivalent & Substitute Parts

Part Overview

The UCS2V820MHD is a 82 µF, 350 V aluminum electrolytic capacitor in radial, can package manufactured by Nichicon. This component is rated for 10,000 hours at 105°C and is designed for general-purpose applications requiring through-hole mounting. The part is currently active in production with ROHS3 compliance.

Substitute parts are necessary when the original component becomes unavailable, when design requirements demand enhanced performance characteristics such as higher voltage ratings or extended operational lifetime, or when alternative manufacturers' components offer equivalent electrical and mechanical compatibility within the specified parameter tolerances.

Key Parameters

Parameter	Value
Capacitance	82 µF
Tolerance	±20%
Voltage - Rated	350 V
Lifetime @ Temperature	10,000 Hrs @ 105°C
Operating Temperature Range	-40°C ~ 105°C
Polarization	Polar
Lead Spacing	0.295" (7.50 mm)
Size / Dimension	0.709" Dia (18.00 mm)
Height - Seated (Max)	1.043" (26.50 mm)
Mounting Type	Through Hole
Package / Case	Radial, Can
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the UCS2V820MHD are classified based on the following substitution criteria:

Direct Equivalent (Same Electrical Rating):

Capacitance: 82 µF (exact match required)
Tolerance: ±20% (exact match required)
Voltage Rating: 350 V (exact match required)
Polarization: Polar (exact match required)
Lead Spacing: 0.295" (7.50 mm) (exact match required)
Package Type: Radial, Can (exact match required)
Mounting Type: Through Hole (exact match required)

Upgrade Equivalents (Enhanced Performance):

Capacitance: 82 µF (exact match required)
Tolerance: ±20% (exact match required)
Voltage Rating: 400 V or higher (higher voltage provides design margin)
Polarization: Polar (exact match required)
Lead Spacing: 0.295" (7.50 mm) (exact match required)
Package Type: Radial, Can (exact match required)
Mounting Type: Through Hole (exact match required)
Lifetime: 12,000 Hrs @ 105°C or greater (extended operational life)

All substitute parts maintain identical mechanical dimensions and mounting compatibility with the original UCS2V820MHD.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Tolerance	Voltage Rating	Lifetime @ 105°C	Lead Spacing	Size Dia	Height (Max)	Ripple Current @ 120 Hz	Ripple Current @ 100 kHz	RoHS Status	Product Status
UCS2V820MHD	Nichicon	UCS	82 µF	±20%	350 V	10,000 Hrs	0.295" (7.50 mm)	0.709" (18.00 mm)	1.043" (26.50 mm)	765 mA	1.53 A	ROHS3	Active
UCY2V820MHD3	Nichicon	UCY	82 µF	±20%	350 V	12,000 Hrs	0.295" (7.50 mm)	0.709" (18.00 mm)	1.043" (26.50 mm)	765 mA	1.53 A	ROHS3	Active
UCS2G820MHD	Nichicon	UCS	82 µF	±20%	400 V	10,000 Hrs	0.295" (7.50 mm)	0.709" (18.00 mm)	1.043" (26.50 mm)	762.5 mA	1.525 A	ROHS3	Active
400BXW82MEFR18X25	Rubycon	BXW	82 µF	±20%	400 V	12,000 Hrs	0.295" (7.50 mm)	0.709" (18.00 mm)	1.063" (27.00 mm)	640 mA	1.6 A	ROHS3	Active
420BXW82MEFR18X25	Rubycon	BXW	82 µF	±20%	420 V	12,000 Hrs	0.295" (7.50 mm)	0.709" (18.00 mm)	1.063" (27.00 mm)	640 mA	1.6 A	ROHS3	Active
EKXJ401ELL820MM25S	Chemi-Con	KXJ	82 µF	±20%	400 V	12,000 Hrs	0.295" (7.50 mm)	0.709" (18.00 mm)	1.043" (26.50 mm)	640 mA	1.6 A	ROHS3	Active

Engineering Selection Recommendations

Direct Equivalent Selection: The UCY2V820MHD3 from Nichicon provides direct electrical equivalence to the UCS2V820MHD with identical voltage and capacitance ratings. This part offers extended operational lifetime of 12,000 hours at 105°C compared to the original 10,000 hours, while maintaining all mechanical and electrical specifications. Both parts are ROHS3 compliant and active in production.

Upgrade Selection for Enhanced Voltage Margin: The UCS2G820MHD (Nichicon, 400 V) provides a 50 V voltage rating increase over the original part while maintaining the same 82 µF capacitance and ±20% tolerance. This upgrade is suitable for applications requiring additional design margin in high-voltage circuits. The part remains within the same physical envelope and is ROHS3 compliant.

Multi-Manufacturer Upgrade Options: The 400BXW82MEFR18X25 and 420BXW82MEFR18X25 from Rubycon, and EKXJ401ELL820MM25S from Chemi-Con all provide 400 V or higher voltage ratings with 12,000-hour lifetime ratings. The Chemi-Con EKXJ401ELL820MM25S carries AEC-Q200 automotive qualification and is suitable for automotive applications. All three parts maintain the required lead spacing and through-hole mounting compatibility.

Compliance Considerations: All substitute parts maintain ROHS3 compliance. The EKXJ401ELL820MM25S additionally carries AEC-Q200 automotive qualification, making it suitable for automotive-grade applications where such certification is required.

Frequently Asked Questions (FAQ)

Q: Can UCY2V820MHD3 be used as a direct replacement for UCS2V820MHD? A: Yes. The UCY2V820MHD3 maintains identical electrical ratings (82 µF, ±20%, 350 V) and mechanical dimensions (lead spacing, package type, mounting configuration). The extended 12,000-hour lifetime at 105°C provides additional operational margin without affecting compatibility.

Q: What is the difference between the original part and the 400 V upgrade options? A: The upgrade parts (UCS2G820MHD, 400BXW82MEFR18X25, EKXJ401ELL820MM25S, 420BXW82MEFR18X25) provide higher voltage ratings (400 V or 420 V) while maintaining the same 82 µF capacitance. These are suitable for circuits where the original 350 V rating is insufficient or where design margin is required. All maintain identical lead spacing and through-hole mounting.

Q: Are there physical dimension differences between substitute parts? A: The Rubycon BXW series parts (400BXW82MEFR18X25, 420BXW82MEFR18X25) have a maximum seated height of 1.063" (27.00 mm) compared to 1.043" (26.50 mm) for the original and most other substitutes. This 0.020" difference must be verified against PCB layout constraints before selection.

Q: Which substitute part is suitable for automotive applications? A: The EKXJ401ELL820MM25S from Chemi-Con carries AEC-Q200 automotive qualification and is specified for automotive applications. This part provides 400 V rating, 12,000-hour lifetime, and maintains all mechanical compatibility requirements.

Q: Do all substitute parts maintain the same lead spacing? A: Yes. All substitute parts maintain 0.295" (7.50 mm) lead spacing, ensuring PCB footprint compatibility with the original UCS2V820MHD.

Q: What is the significance of the extended 12,000-hour lifetime in substitute parts? A: The 12,000-hour lifetime at 105°C, offered by UCY2V820MHD3, 400BXW82MEFR18X25, 420BXW82MEFR18X25, and EKXJ401ELL820MM25S, provides 20% longer operational life compared to the original 10,000-hour rating. This extended lifetime improves system reliability in applications with continuous thermal stress.

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