LGU2W680MELY Equivalent & Substitute Parts

Part Overview

The LGU2W680MELY is a 68 µF, 450 V aluminum electrolytic capacitor manufactured by Nichicon in a radial, can snap-in package. This component is designed for general-purpose applications requiring stable capacitance performance over extended operational life. The part is Active status and ROHS3 compliant, making it suitable for modern electronic equipment. Equivalent and substitute parts are identified when direct sourcing becomes constrained due to inventory limitations or supply chain considerations, provided all critical electrical and mechanical parameters remain within acceptable tolerances.

Key Parameters

Parameter	Value
Capacitance	68 µF
Voltage - Rated	450 V
Tolerance	±20%
Lifetime @ Temperature	3000 Hrs @ 105°C
Operating Temperature Range	-25°C ~ 105°C
Polarization	Polar
Lead Spacing	0.394" (10.00 mm)
Size / Dimension	0.787" Dia (20.00 mm)
Mounting Type	Through Hole
Package / Case	Radial, Can - Snap-In
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the LGU2W680MELY is determined by strict equivalence across the following critical parameters: capacitance value (68 µF), rated voltage (450 V), tolerance (±20%), thermal lifetime (3000 Hrs @ 105°C), operating temperature range (-25°C ~ 105°C), polarization (Polar), lead spacing (0.394" / 10.00 mm), and package type (Radial, Can - Snap-In). All identified substitute parts meet these core requirements. Mechanical dimensions, ripple current ratings, and ESR values may vary within acceptable engineering tolerances for the application category. All substitute parts maintain ROHS3 compliance and are Active status products.

Parameter Comparison

Parameter	LGU2W680MELY (Nichicon)	LGN2W680MELY25 (Nichicon)	450MXG68MEFCSN20X25 (Rubycon)	SLP680M450A3P3 (CDE)
Capacitance	68 µF	68 µF	68 µF	68 µF
Voltage - Rated	450 V	450 V	450 V	450 V
Tolerance	±20%	±20%	±20%	±20%
Lifetime @ Temp.	3000 Hrs @ 105°C	3000 Hrs @ 105°C	3000 Hrs @ 105°C	3000 Hrs @ 105°C
Operating Temperature	-25°C ~ 105°C	-25°C ~ 105°C	-25°C ~ 105°C	-25°C ~ 105°C
Polarization	Polar	Polar	Polar	Polar
Lead Spacing	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)
Size / Dimension	0.787" Dia (20.00 mm)	0.787" Dia (20.00 mm)	0.787" Dia (20.00 mm)	0.866" Dia (22.00 mm)
Height - Seated (Max)	1.378" (35.00 mm)	1.063" (27.00 mm)	1.063" (27.00 mm)	1.181" (30.00 mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

All four parts—LGU2W680MELY, LGN2W680MELY25, 450MXG68MEFCSN20X25, and SLP680M450A3P3—are Active status products with ROHS3 compliance and REACH Unaffected designation. Selection among these parts is based on mechanical fit constraints and inventory availability. The LGU2W680MELY features a maximum seated height of 1.378" (35.00 mm) with a 20.00 mm diameter. The LGN2W680MELY25 and 450MXG68MEFCSN20X25 both offer reduced height profiles at 1.063" (27.00 mm), suitable for space-constrained applications. The SLP680M450A3P3 presents a slightly larger diameter of 0.866" (22.00 mm) with intermediate height of 1.181" (30.00 mm). All parts maintain identical electrical specifications for capacitance, voltage rating, tolerance, and thermal lifetime, ensuring functional equivalence within the application.

Frequently Asked Questions (FAQ)

Q: Can LGN2W680MELY25 be used as a direct replacement for LGU2W680MELY?

A: Yes. Both parts are manufactured by Nichicon with identical capacitance (68 µF), voltage rating (450 V), tolerance (±20%), thermal lifetime (3000 Hrs @ 105°C), and lead spacing (10.00 mm). The primary difference is the reduced seated height of LGN2W680MELY25 (27.00 mm vs. 35.00 mm), which may be advantageous in space-constrained designs.

Q: What are the mechanical constraints when substituting with 450MXG68MEFCSN20X25?

A: The 450MXG68MEFCSN20X25 maintains the same lead spacing (10.00 mm) and diameter (20.00 mm) as the LGU2W680MELY, with a comparable seated height of 27.00 mm. PCB layout compatibility is maintained. The part is manufactured by Rubycon and carries ROHS3 compliance.

Q: Is the SLP680M450A3P3 suitable for all applications requiring the LGU2W680MELY?

A: The SLP680M450A3P3 meets all electrical requirements and maintains lead spacing compatibility. However, its diameter is 22.00 mm compared to the 20.00 mm of the LGU2W680MELY. PCB footprint verification is necessary to confirm mechanical fit in the target application.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All four parts—LGU2W680MELY, LGN2W680MELY25, 450MXG68MEFCSN20X25, and SLP680M450A3P3—are ROHS3 compliant and REACH Unaffected.

Q: What is the significance of the different ripple current ratings?

A: Ripple current ratings vary among the parts due to internal design differences. The provided ripple current values at 120 Hz and 50 kHz or 10 kHz reflect each manufacturer's specifications. Application-specific ripple current requirements must be verified against the selected part's datasheet to ensure adequate thermal performance.

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