Equivalent & Substitute Parts for UCS2V680MHD

Part Overview

The Nichicon UCS2V680MHD is a 68 µF, 350 V aluminum electrolytic capacitor in radial, can package configuration. This component is rated for 10000 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 become necessary when addressing design requirements for higher voltage ratings, extended operational lifetime, or specific manufacturer certifications such as automotive qualification. The substitute options maintain identical capacitance and tolerance specifications while offering enhanced electrical performance characteristics.

Key Parameters

Parameter	Value
Capacitance	68 µF
Tolerance	±20%
Voltage Rating	350 V
Lifetime @ Temperature	10000 Hrs @ 105°C
Operating Temperature Range	-40°C ~ 105°C
Polarization	Polar
Lead Spacing	0.295" (7.50mm)
Package Type	Radial, Can
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the UCS2V680MHD is determined by the following criteria:

Mandatory Matching Parameters:

Capacitance: 68 µF
Tolerance: ±20%
Polarization: Polar
Lead Spacing: 0.295" (7.50mm)
Package Type: Radial, Can
Mounting Type: Through Hole

Allowable Variation Parameters:

Voltage Rating: Equal to or greater than 350 V
Lifetime @ Temperature: Equal to or greater than 10000 Hrs @ 105°C
Physical dimensions: Within ±0.020" tolerance for height
Ripple current ratings: May vary based on voltage rating and series design

All three substitute parts meet these criteria with voltage ratings upgraded to 400 V and extended lifetimes to 12000 hours at 105°C.

Parameter Comparison

Parameter	UCS2V680MHD (Main)	UCY2G680MHD9	400BXW68MEFR16X25	EKXJ401ELL680ML25S
Manufacturer	Nichicon	Nichicon	Rubycon	Chemi-Con
Capacitance	68 µF	68 µF	68 µF	68 µF
Tolerance	±20%	±20%	±20%	±20%
Voltage Rating	350 V	400 V	400 V	400 V
Lifetime @ 105°C	10000 Hrs	12000 Hrs	12000 Hrs	12000 Hrs
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C
Lead Spacing	0.295" (7.50mm)	0.295" (7.50mm)	0.295" (7.50mm)	0.295" (7.50mm)
Size / Dimension	0.630" Dia (16.00mm)	0.630" Dia (16.00mm)	0.630" Dia (16.00mm)	0.630" Dia (16.00mm)
Height - Seated (Max)	1.043" (26.50mm)	1.043" (26.50mm)	1.063" (27.00mm)	1.043" (26.50mm)
Ripple Current @ 120 Hz	700 mA	640 mA	570 mA	570 mA
Ripple Current @ 100 kHz	1.4 A	1.28 A	1.425 A	1.425 A
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

UCY2G680MHD9 (Nichicon): This substitute maintains manufacturer continuity while providing a 50 V voltage rating increase and 2000-hour lifetime extension. ROHS3 compliance is maintained. This option is suitable for applications requiring same-manufacturer sourcing with enhanced voltage margin.

400BXW68MEFR16X25 (Rubycon): This substitute offers equivalent voltage and lifetime improvements with a maximum seated height of 1.063" (27.00mm), representing a 0.020" increase from the original specification. ROHS3 compliance is maintained. This option is suitable for applications with adequate PCB clearance for the minor height variation.

EKXJ401ELL680ML25S (Chemi-Con): This substitute provides the same voltage and lifetime improvements as other options while carrying AEC-Q200 automotive qualification. This part is designated for automotive applications and maintains ROHS3 compliance. This option is required for automotive-grade circuit implementations.

Frequently Asked Questions (FAQ)

Q: Can I use a 400 V rated capacitor in place of a 350 V rated capacitor?

A: Yes. A higher voltage rating provides additional safety margin and does not degrade performance in circuits designed for lower voltages. The capacitor will operate within specification in any application rated for 350 V or lower.

Q: Are there physical compatibility concerns with the substitute parts?

A: The Rubycon 400BXW68MEFR16X25 has a maximum seated height of 1.063" (27.00mm) compared to 1.043" (26.50mm) for the original and other substitutes. Verify PCB layout clearance before selection if height is constrained.

Q: What is the difference between general-purpose and automotive-rated capacitors?

A: The Chemi-Con EKXJ401ELL680ML25S carries AEC-Q200 automotive qualification, indicating compliance with automotive reliability and testing standards. This part is required for automotive applications; general-purpose parts are not qualified for automotive use.

Q: Do all substitute parts maintain the same lead spacing?

A: Yes. All substitute parts maintain 0.295" (7.50mm) lead spacing, ensuring direct PCB footprint compatibility with the original UCS2V680MHD.

Q: How does the lifetime rating affect component selection?

A: The original part is rated for 10000 hours at 105°C. All substitute parts extend this to 12000 hours at 105°C, providing 20% additional operational life under identical thermal conditions. This is a non-degrading improvement suitable for all applications.

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