LGU2D271MELY Equivalent & Substitute Parts

Part Overview

The LGU2D271MELY is a 270 µF, 200 V aluminum electrolytic capacitor manufactured by Nichicon in the LGU series. This radial, can-style snap-in capacitor is rated for 3000 hours at 105°C and operates across the temperature range of -40°C to 105°C. The part is Active in product status and RoHS3 compliant. Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility permits cross-manufacturer sourcing while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Capacitance	270 µF
Voltage Rating	200 V
Tolerance	±20%
Lifetime @ Temperature	3000 Hrs @ 105°C
Operating Temperature Range	-40°C ~ 105°C
Polarization	Polar
Lead Spacing	0.394" (10.00 mm)
Mounting Type	Through Hole
Package / Case	Radial, Can - Snap-In
RoHS Status	RoHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the LGU2D271MELY are qualified based on the following electrical and mechanical parameters:

Electrical Match: Capacitance (270 µF), voltage rating (200 V), and tolerance (±20%) must be identical
Thermal Match: Lifetime rating of 3000 hours at 105°C and operating temperature range of -40°C to 105°C must be maintained
Mechanical Match: Lead spacing of 0.394" (10.00 mm), through-hole mounting, and radial can snap-in package configuration must be preserved
Compliance Match: RoHS3 compliance and REACH unaffected status must be maintained

The identified substitutes meet all these criteria. Physical dimensions (diameter and height) may vary within the snap-in package envelope, provided the lead spacing and mounting footprint remain constant.

Parameter Comparison

Parameter	LGU2D271MELY (Nichicon)	LGU2D271MELZ (Nichicon)	381LX271M200J012 (CDE)
Manufacturer	Nichicon	Nichicon	Cornell Dubilier Electronics
Capacitance	270 µF	270 µF	270 µF
Voltage Rating	200 V	200 V	200 V
Tolerance	±20%	±20%	±20%
Lifetime @ 105°C	3000 Hrs	3000 Hrs	3000 Hrs
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C
Polarization	Polar	Polar	Polar
Ripple Current @ 120 Hz	1.1 A	1.1 A	1.1 A
Lead Spacing	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In
RoHS Status	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
Product Status	Active	Active	Active

Engineering Selection Recommendations

All three parts—LGU2D271MELY, LGU2D271MELZ, and 381LX271M200J012—are Active products with RoHS3 compliance and REACH unaffected status. Selection between these parts is based on availability and supply chain considerations rather than electrical or mechanical performance differences.

LGU2D271MELZ is a direct Nichicon series equivalent with identical electrical specifications and lead spacing. The primary difference is physical dimensions (0.866" diameter, 0.984" height versus 0.787" diameter, 1.181" height for the main part), which may be relevant for space-constrained applications but does not affect electrical compatibility.

381LX271M200J012 from Cornell Dubilier Electronics is a cross-manufacturer substitute that meets all electrical and mechanical requirements. The ripple current specification at high frequency differs (1.5 A @ 20 kHz versus 1.65 A @ 50 kHz), but both parts satisfy the general-purpose application profile. This part carries MSL 1 (Unlimited) moisture sensitivity rating.

Frequently Asked Questions (FAQ)

Q: Can LGU2D271MELZ be used as a direct replacement for LGU2D271MELY?

A: Yes. Both parts are from the Nichicon LGU series with identical electrical specifications (270 µF, 200 V, ±20% tolerance, 3000 Hrs @ 105°C) and lead spacing (0.394" / 10.00 mm). Physical dimensions differ, so verify that the larger can diameter (0.866" versus 0.787") and shorter height (0.984" versus 1.181") fit the PCB layout.

Q: Is 381LX271M200J012 electrically compatible with LGU2D271MELY?

A: Yes. The Cornell Dubilier part matches all critical electrical parameters: 270 µF capacitance, 200 V voltage rating, ±20% tolerance, 3000-hour lifetime at 105°C, and -40°C to 105°C operating range. Lead spacing is identical at 0.394" (10.00 mm). Physical dimensions differ (0.984" diameter, 1.063" height), so verify PCB fit.

Q: What is the difference in ripple current specifications?

A: LGU2D271MELY and LGU2D271MELZ specify 1.65 A @ 50 kHz. The 381LX271M200J012 specifies 1.5 A @ 20 kHz. Both parts meet the 1.1 A @ 120 Hz low-frequency ripple current requirement. The frequency difference reflects different measurement standards between manufacturers but does not affect general-purpose application suitability.

Q: Are all three parts RoHS3 compliant?

A: Yes. LGU2D271MELY, LGU2D271MELZ, and 381LX271M200J012 are all RoHS3 compliant and REACH unaffected.

Q: Does moisture sensitivity affect part selection?

A: LGU2D271MELY and LGU2D271MELZ have moisture sensitivity level listed as Not Applicable. The 381LX271M200J012 carries MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. This does not affect electrical compatibility but may influence storage and handling procedures based on your manufacturing process requirements.

Q: Can these parts be used interchangeably in the same circuit?

A: Yes, provided the physical dimensions fit the PCB layout and snap-in mounting configuration. All three parts have identical lead spacing (0.394" / 10.00 mm), through-hole mounting, and radial can snap-in package type. Verify that the can diameter and height of the selected substitute do not interfere with adjacent components or the PCB enclosure.

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