Equivalent & Substitute Parts for LGU2F151MELZ

Part Overview

The LGU2F151MELZ is a 150 µF, 315 V aluminum electrolytic capacitor manufactured by Nichicon in the LGU series. This radial, can-style snap-in capacitor is designed for general-purpose applications with a rated lifetime of 3000 hours at 105°C and an operating temperature range of -25°C to 105°C. The part is currently active and ROHS3 compliant. Equivalent and substitute parts are identified based on matching or exceeding electrical and mechanical specifications within the same package category.

Key Parameters

Parameter	Value
Capacitance	150 µF
Voltage Rating	315 V
Tolerance	±20%
Package Type	Radial, Can - Snap-In
Lead Spacing	0.394" (10.00 mm)
Diameter	0.866" (22.00 mm)
Height	1.260" (32.00 mm)
Mounting Type	Through Hole
Lifetime @ 105°C	3000 Hrs
Operating Temperature	-25°C ~ 105°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the LGU2F151MELZ is determined by the following criteria:

Primary Matching Parameters:

Capacitance: 150 µF (exact match required)
Tolerance: ±20% (exact match required)
Package Type: Radial, Can - Snap-In (exact match required)
Lead Spacing: 0.394" (10.00 mm) (exact match required)
Diameter: 0.866" (22.00 mm) (exact match required)
Height: 1.260" (32.00 mm) (exact match required)
Mounting Type: Through Hole (exact match required)

Allowable Variation Parameters:

Voltage Rating: Equal to or greater than 315 V
Lifetime @ 105°C: Equal to or greater than 3000 Hrs
Operating Temperature Range: Must include -25°C to 105°C or wider
Manufacturer: Different manufacturers acceptable if all other parameters match

Substitute parts are grouped into two categories: upgrade substitutes (higher voltage rating or extended lifetime) and equivalent substitutes (identical electrical specifications with dimensional variations).

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Diameter	Height	Lifetime @ 105°C	Operating Temp	RoHS Status
LGU2F151MELZ	Nichicon	150 µF	315 V	±20%	0.866" (22.00 mm)	1.260" (32.00 mm)	3000 Hrs	-25°C ~ 105°C	ROHS3
LGN2V151MELZ30	Nichicon	150 µF	350 V	±20%	0.866" (22.00 mm)	1.260" (32.00 mm)	3000 Hrs	-25°C ~ 105°C	ROHS3
LGU2F151MELY	Nichicon	150 µF	315 V	±20%	0.787" (20.00 mm)	1.457" (37.00 mm)	3000 Hrs	-25°C ~ 105°C	ROHS3
400VXH150MEFCSN22X30	Rubycon	150 µF	400 V	±20%	0.866" (22.00 mm)	1.260" (32.00 mm)	5000 Hrs	-25°C ~ 105°C	ROHS3
B43508A9157M000	EPCOS - TDK Electronics	150 µF	400 V	±20%	0.866" (22.00 mm)	1.260" (32.00 mm)	3000 Hrs	-40°C ~ 105°C	ROHS3

Engineering Selection Recommendations

Direct Equivalent (Same Footprint & Voltage): LGU2F151MELZ and LGU2F151MELY are both Nichicon LGU series parts with identical electrical specifications. LGU2F151MELY has different physical dimensions (0.787" diameter, 1.457" height) and is not a direct footprint replacement.

Upgrade Substitutes (Higher Voltage Rating):

LGN2V151MELZ30 (Nichicon, 350 V): Maintains identical footprint and lifetime. Voltage upgrade of 35 V above the main part.
400VXH150MEFCSN22X30 (Rubycon, 400 V): Maintains identical footprint. Voltage upgrade of 85 V and extended lifetime to 5000 hours at 105°C.
B43508A9157M000 (EPCOS - TDK Electronics, 400 V): Maintains identical footprint. Voltage upgrade of 85 V and extended operating temperature range to -40°C.

All substitute parts are ROHS3 compliant and suitable for direct replacement in applications where the original part is specified, provided that physical space constraints and lead spacing requirements are met.

Frequently Asked Questions (FAQ)

Q: Can LGU2F151MELY be used as a direct replacement for LGU2F151MELZ? A: LGU2F151MELY has different physical dimensions (0.787" diameter vs. 0.866", and 1.457" height vs. 1.260"). It is not a direct footprint replacement and requires PCB layout verification before use.

Q: What is the advantage of using 400VXH150MEFCSN22X30 over the original LGU2F151MELZ? A: The 400VXH150MEFCSN22X30 provides a 85 V voltage margin increase and extends the rated lifetime to 5000 hours at 105°C, compared to 3000 hours for the original part. It maintains identical physical dimensions and lead spacing.

Q: Are all substitute parts ROHS3 compliant? A: Yes, all listed substitute parts are ROHS3 compliant and meet the same environmental compliance standards as the original LGU2F151MELZ.

Q: Can B43508A9157M000 be used in applications requiring the -25°C lower temperature limit? A: B43508A9157M000 has an extended operating temperature range of -40°C to 105°C, which exceeds the -25°C to 105°C requirement of the original part. It is suitable for applications requiring the original temperature range.

Q: What is the key difference between LGN2V151MELZ30 and the original LGU2F151MELZ? A: LGN2V151MELZ30 is rated for 350 V compared to 315 V for the original part. All other electrical and physical specifications remain identical, including footprint, lead spacing, and lifetime rating.

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