LGN2W151MELY45 Equivalent & Substitute Parts

Part Overview

The LGN2W151MELY45 is a 150 µF, 450 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by Nichicon. This component is rated for 3000 hours at 105°C and is designed for general-purpose applications requiring high-voltage energy storage and filtering. The part is Active status and ROHS3 compliant.

Equivalent and substitute parts are necessary when the primary part number becomes unavailable, when design revisions require different physical dimensions or thermal characteristics, or when application requirements demand extended operational lifetime or enhanced ripple current handling.

Key Parameters

Parameter	Value
Capacitance	150 µF
Voltage Rating	450 V
Tolerance	±20%
Lifetime @ 105°C	3000 Hrs
Operating Temperature Range	-25°C to 105°C
Polarization	Polar
Package Type	Radial, Can - Snap-In
Mounting Type	Through Hole
Lead Spacing	10.00 mm (0.394")
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence in the following parameters:

Capacitance: 150 µF (exact match required)
Voltage Rating: 450 V (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)
Package Type: Radial, Can - Snap-In (exact match required)
Lead Spacing: 10.00 mm (exact match required)
Mounting Type: Through Hole (exact match required)
Operating Temperature Range: -25°C to 105°C (exact match required)
RoHS Status: ROHS3 Compliant (exact match required)

Substitute parts may vary in the following parameters without affecting functional compatibility:

Physical dimensions (diameter and height)
Lifetime rating at 105°C
Ripple current specifications
Series designation (LGN, LAR, LGG, LGU, LGW)

All substitute parts listed meet the core electrical and mechanical requirements for direct replacement in applications designed for the LGN2W151MELY45.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	Lifetime @ 105°C	Diameter (mm)	Height (mm)	Lead Spacing (mm)	Ripple Current @ 120 Hz	Ripple Current @ 50 kHz	Status
LGN2W151MELY45	Nichicon	LGN	150 µF	450 V	±20%	3000 Hrs	20.00	47.00	10.00	790 mA	1.1297 A	Active
LAR2W151MELA30	Nichicon	LAR	150 µF	450 V	±20%	2000 Hrs	25.00	30.00	10.00	790 mA	908.5 mA	Active
LAR2W151MELZ40	Nichicon	LAR	150 µF	450 V	±20%	2000 Hrs	22.00	40.00	10.00	790 mA	908.5 mA	Active
LGG2W151MELZ35	Nichicon	LGG	150 µF	450 V	±20%	2000 Hrs	22.00	37.00	10.00	720 mA	1.0296 A	Active
LGN2W151MELB25	Nichicon	LGN	150 µF	450 V	±20%	3000 Hrs	30.00	27.00	10.00	790 mA	1.1297 A	Active
LGN2W151MELZ40	Nichicon	LGN	150 µF	450 V	±20%	3000 Hrs	22.00	42.00	10.00	790 mA	1.1297 A	Active
LGR2W151MELC30	Nichicon	LGR	150 µF	450 V	±20%	10000 Hrs	35.00	30.00	10.00	790 mA	1.1297 A	Active
LGU2W151MELA	Nichicon	LGU	150 µF	450 V	±20%	3000 Hrs	25.00	35.00	10.00	880 mA	1.2584 A	Active
LGU2W151MELB	Nichicon	LGU	150 µF	450 V	±20%	3000 Hrs	30.00	30.00	10.00	880 mA	1.2584 A	Active
LGW2W151MELA35	Nichicon	LGW	150 µF	450 V	±20%	3000 Hrs	25.00	35.00	10.00	1.31 A	1.8733 A	Active
LGW2W151MELB25	Nichicon	LGW	150 µF	450 V	±20%	3000 Hrs	30.00	25.00	10.00	1.31 A	1.8733 A	Active

Engineering Selection Recommendations

All listed substitute parts are Active status and ROHS3 compliant, meeting regulatory requirements equivalent to the primary part. Selection among substitutes should be based on:

Physical Space Constraints: Verify available PCB footprint and component height clearance. The LGN2W151MELY45 measures 20.00 mm diameter × 47.00 mm height. Compact alternatives include LGN2W151MELB25 (30.00 mm diameter × 27.00 mm height) and LGW2W151MELB25 (30.00 mm diameter × 25.00 mm height).

Thermal Lifetime Requirements: The primary part and LGN series variants (LGN2W151MELB25, LGN2W151MELZ40) provide 3000 hours at 105°C. The LGR2W151MELC30 offers extended lifetime of 10000 hours at 105°C for applications requiring higher reliability. LAR and LGG series provide 2000 hours at 105°C.

Ripple Current Capacity: The LGW series (LGW2W151MELA35, LGW2W151MELB25) deliver the highest ripple current specifications at 1.31 A @ 120 Hz and 1.8733 A @ 50 kHz, suitable for high-current filtering applications. The LGU series provides intermediate ripple current at 880 mA @ 120 Hz and 1.2584 A @ 50 kHz.

Inventory Availability: All parts are listed as in stock. LGN2W151MELZ40 has the highest inventory (9569 pcs), followed by LGN2W151MELB25 (5747 pcs).

Frequently Asked Questions (FAQ)

Q: Can I substitute the LGN2W151MELY45 with any of the listed parts?

A: Yes, all listed parts are electrically and mechanically equivalent. They share identical capacitance (150 µF), voltage rating (450 V), tolerance (±20%), lead spacing (10.00 mm), and package type (radial, can snap-in). Physical dimensions and thermal lifetime vary, so verify PCB space availability and application lifetime requirements before selection.

Q: What is the difference between the LGN, LAR, LGG, LGU, and LGW series?

A: These represent different Nichicon product lines with varying thermal lifetime ratings and ripple current specifications. LGN and LGU series provide 3000 hours at 105°C. LAR and LGG series provide 2000 hours at 105°C. LGR series provides 10000 hours at 105°C. LGW series offers the highest ripple current capacity. All maintain identical electrical ratings for the 150 µF, 450 V specification.

Q: Does the physical size difference affect electrical performance?

A: No. Physical dimensions (diameter and height) do not affect capacitance, voltage rating, or tolerance. Size variations accommodate different PCB layouts and thermal management strategies. Verify mechanical fit within your design before substitution.

Q: Which substitute offers the longest operational lifetime?

A: The LGR2W151MELC30 provides 10000 hours at 105°C, compared to 3000 hours for the primary part and most LGN/LGU/LGW variants. This extended lifetime is suitable for applications requiring higher reliability over extended service periods.

Q: Are all substitutes RoHS3 compliant?

A: Yes, all listed substitute parts are ROHS3 compliant, matching the compliance status of the primary part LGN2W151MELY45.

Q: What ripple current should I select for my application?

A: Choose based on your circuit's AC current requirements at the specified frequencies. The LGW series (1.31 A @ 120 Hz, 1.8733 A @ 50 kHz) handles the highest ripple current. The primary LGN2W151MELY45 and LGN variants provide 790 mA @ 120 Hz and 1.1297 A @ 50 kHz. LAR and LGG series provide lower ripple current capacity at 790 mA @ 120 Hz and 908.5–1.0296 A @ 50 kHz respectively.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message