LGU2F221MELZ Equivalent & Substitute Parts

Part Overview

The LGU2F221MELZ is a 220 µF, 315 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 is designed for general-purpose applications requiring through-hole mounting. The part is active and in stock with 850 units available.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when design requirements demand higher voltage ratings or improved thermal performance, or when alternative manufacturers' components meet the same electrical and mechanical specifications.

Key Parameters

Parameter	Value
Capacitance	220 µF
Voltage - Rated	315 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	0.866" Dia (22.00 mm)
Height - Seated (Max)	1.654" (42.00 mm)
Mounting Type	Through Hole
Package / Case	Radial, Can - Snap-In
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the LGU2F221MELZ is determined by the following criteria:

Electrical Parameters (Must Match or Exceed):

Capacitance: 220 µF (exact match required)
Tolerance: ±20% (exact match required)
Voltage Rating: Minimum 315 V (equal or higher acceptable)
Lifetime: Minimum 3000 Hrs @ 105°C (equal or higher acceptable)
Operating Temperature Range: Must encompass -25°C ~ 105°C

Mechanical Parameters (Must Match):

Lead Spacing: 0.394" (10.00 mm) (exact match required)
Mounting Type: Through Hole (exact match required)
Package / Case: Radial, Can - Snap-In (exact match required)
Polarization: Polar (exact match required)

Compliance Parameters:

RoHS Status: ROHS3 Compliant (minimum requirement)

Substitute parts are categorized as follows:

Upgrade Substitutes: Parts with higher voltage ratings (350 V or 400 V) that maintain identical capacitance, tolerance, and mechanical dimensions. These provide enhanced voltage margin and are direct functional upgrades.

Similar Substitutes: Parts from the same manufacturer (Nichicon LGU series) with identical electrical specifications but different physical dimensions (diameter and/or height). These maintain full electrical compatibility but require PCB layout verification due to dimensional changes.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage - Rated	Tolerance	Lifetime @ Temp.	Operating Temp.	Lead Spacing	Diameter	Height (Max)	RoHS Status
LGU2F221MELZ	Nichicon	220 µF	315 V	±20%	3000 Hrs @ 105°C	-25°C ~ 105°C	0.394" (10.00 mm)	0.866" (22.00 mm)	1.654" (42.00 mm)	ROHS3 Compliant
LGN2V221MELZ35	Nichicon	220 µF	350 V	±20%	3000 Hrs @ 105°C	-25°C ~ 105°C	0.394" (10.00 mm)	0.866" (22.00 mm)	1.457" (37.00 mm)	ROHS3 Compliant
LGU2F221MELB	Nichicon	220 µF	315 V	±20%	3000 Hrs @ 105°C	-25°C ~ 105°C	0.394" (10.00 mm)	1.181" (30.00 mm)	1.063" (27.00 mm)	ROHS3 Compliant
LGU2F221MELY	Nichicon	220 µF	315 V	±20%	3000 Hrs @ 105°C	-25°C ~ 105°C	0.394" (10.00 mm)	0.787" (20.00 mm)	2.047" (52.00 mm)	ROHS3 Compliant
B43508A9227M000	EPCOS - TDK Electronics	220 µF	400 V	±20%	3000 Hrs @ 105°C	-40°C ~ 105°C	0.394" (10.00 mm)	0.866" (22.00 mm)	1.654" (42.00 mm)	ROHS3 Compliant

Engineering Selection Recommendations

LGN2V221MELZ35 (Upgrade - Nichicon): This part provides a 35 V voltage margin increase (350 V vs. 315 V) while maintaining identical lead spacing and diameter. Height is reduced by 0.197" (5.00 mm), which may improve PCB layout efficiency. All parts are ROHS3 compliant and active in production. Inventory availability is 1171 units.

LGU2F221MELB (Similar - Nichicon): This part maintains identical electrical specifications and lead spacing but increases diameter to 1.181" (30.00 mm) and reduces height to 1.063" (27.00 mm). PCB layout verification is required due to dimensional changes. Inventory availability is 920 units.

LGU2F221MELY (Similar - Nichicon): This part maintains identical electrical specifications and lead spacing but reduces diameter to 0.787" (20.00 mm) and increases height to 2.047" (52.00 mm). PCB layout verification is required due to dimensional changes. Inventory availability is 830 units.

B43508A9227M000 (Upgrade - EPCOS/TDK Electronics): This part provides a 85 V voltage margin increase (400 V vs. 315 V) and extends the operating temperature range to -40°C ~ 105°C. Physical dimensions (diameter and height) are identical to the main part. ESR is specified at 560 mOhm @ 100 Hz. All parts are ROHS3 compliant and active in production. Inventory availability is 1776 units.

Frequently Asked Questions (FAQ)

Q: Can LGN2V221MELZ35 be used as a direct replacement for LGU2F221MELZ?

A: Yes. Both parts share identical capacitance (220 µF), tolerance (±20%), lead spacing (10.00 mm), and diameter (22.00 mm). The LGN2V221MELZ35 provides higher voltage rating (350 V vs. 315 V) and is electrically compatible. Height differs by 5.00 mm; verify PCB clearance.

Q: What is the difference between the Nichicon LGU2F221MELZ and the EPCOS B43508A9227M000?

A: Both parts have identical capacitance, tolerance, lead spacing, and physical dimensions. The B43508A9227M000 provides higher voltage rating (400 V vs. 315 V), extended temperature range (-40°C vs. -25°C minimum), and specified ESR (560 mOhm @ 100 Hz). Manufacturer differs; both are ROHS3 compliant.

Q: Can LGU2F221MELB or LGU2F221MELY be used without PCB redesign?

A: These parts maintain identical electrical specifications and lead spacing but have different physical dimensions. LGU2F221MELB increases diameter and reduces height; LGU2F221MELY reduces diameter and increases height. PCB layout verification is required to confirm mechanical fit and clearance compatibility.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (LGN2V221MELZ35, LGU2F221MELB, LGU2F221MELY, and B43508A9227M000) are ROHS3 compliant and meet REACH requirements.

Q: What is the advantage of selecting a higher voltage-rated substitute?

A: Higher voltage-rated parts (LGN2V221MELZ35 at 350 V or B43508A9227M000 at 400 V) provide increased voltage margin above the 315 V design requirement, enhancing circuit reliability and extending component life under transient overvoltage conditions. Electrical performance at rated 315 V remains identical.

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