LAS2G151MELA30 Equivalent & Substitute Parts

Part Overview

The LAS2G151MELA30 is a 150 µF, 400 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by Nichicon. This component is rated for 2000 hours at 105°C and is designed for general-purpose applications requiring through-hole mounting. The part is currently active in production with 668 units in stock.

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

Key Parameters

Parameter	Value
Capacitance	150 µF
Voltage Rating	400 V
Tolerance	±20%
Lifetime @ 105°C	2000 Hrs
Operating Temperature Range	-25°C ~ 105°C
Polarization	Polar
Lead Spacing	0.394" (10.00 mm)
Package / Case	Radial, Can - Snap-In
Mounting Type	Through Hole
Size / Dimension	0.984" Dia (25.00 mm)
Height - Seated (Max)	1.260" (32.00 mm)

Substitute Part Grouping Explanation

Substitution of the LAS2G151MELA30 is determined by the following criteria:

Direct Equivalents maintain identical electrical specifications: 150 µF capacitance, 400 V voltage rating, ±20% tolerance, and compatible mechanical dimensions (lead spacing 10.00 mm, radial snap-in package, through-hole mounting).

Upgraded Substitutes increase one or more of the following parameters while maintaining mechanical compatibility:

Voltage rating (400 V → 450 V)
Lifetime at 105°C (2000 Hrs → 3000 Hrs or 5000 Hrs)

All substitute parts share the same capacitance value (150 µF), tolerance (±20%), operating temperature range (-25°C ~ 105°C), polarization (polar), lead spacing (10.00 mm), and mounting type (through-hole, radial snap-in package).

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lifetime @ 105°C	Height (Max)	Diameter	Lead Spacing
LAS2G151MELA30	Nichicon	150 µF	400 V	±20%	2000 Hrs	1.260" (32.00 mm)	0.984" (25.00 mm)	0.394" (10.00 mm)
LGU2G151MELA	Nichicon	150 µF	400 V	±20%	3000 Hrs	1.181" (30.00 mm)	0.984" (25.00 mm)	0.394" (10.00 mm)
LGX2W151MELA30	Nichicon	150 µF	450 V	±20%	5000 Hrs	1.260" (32.00 mm)	0.984" (25.00 mm)	0.394" (10.00 mm)
EKMQ401VSN151MQ25S	Chemi-Con	150 µF	400 V	±20%	2000 Hrs	1.063" (27.00 mm)	1.000" (25.40 mm)	0.394" (10.00 mm)
381LQ151M450J022	Cornell Dubilier Electronics (CDE)	150 µF	450 V	±20%	2000 Hrs	1.260" (32.00 mm)	0.984" (25.00 mm)	0.394" (10.00 mm)
450MXH150MEFCSN25X30	Rubycon	150 µF	450 V	±20%	2000 Hrs	1.260" (32.00 mm)	0.984" (25.00 mm)	0.394" (10.00 mm)
450VXG150MEFCSN25X30	Rubycon	150 µF	450 V	±20%	5000 Hrs	1.260" (32.00 mm)	0.984" (25.00 mm)	0.394" (10.00 mm)
450VXH150MEFCSN25X30	Rubycon	150 µF	450 V	±20%	5000 Hrs	1.260" (32.00 mm)	0.984" (25.00 mm)	0.394" (10.00 mm)
B43508B5157M000	EPCOS - TDK Electronics	150 µF	450 V	±20%	3000 Hrs	1.260" (32.00 mm)	0.984" (25.00 mm)	0.394" (10.00 mm)
B43640B5157M000	EPCOS - TDK Electronics	150 µF	450 V	±20%	2000 Hrs	1.260" (32.00 mm)	0.984" (25.00 mm)	0.394" (10.00 mm)

Engineering Selection Recommendations

Direct Equivalent (Same Specifications): EKMQ401VSN151MQ25S from Chemi-Con maintains the 150 µF, 400 V, 2000 Hrs @ 105°C specification. This part is ROHS3 compliant and suitable for direct replacement when manufacturer substitution is required. Note that the diameter is 25.40 mm versus 25.00 mm for the original part; verify PCB layout clearance before selection.

Nichicon Direct Equivalent with Extended Lifetime: LGU2G151MELA from Nichicon provides the same 150 µF, 400 V rating with extended lifetime of 3000 Hrs @ 105°C. Height is reduced to 1.181" (30.00 mm), which may provide additional PCB clearance. This part is ROHS3 compliant.

Upgraded Substitutes (450 V Rating): The following parts provide 450 V voltage rating with extended operational lifetime, suitable for applications requiring higher voltage margin or longer service life:

LGX2W151MELA30 (Nichicon): 5000 Hrs @ 105°C, identical mechanical dimensions to original
450VXG150MEFCSN25X30 (Rubycon): 5000 Hrs @ 105°C, identical mechanical dimensions
450VXH150MEFCSN25X30 (Rubycon): 5000 Hrs @ 105°C, highest inventory availability (274,082 units)
B43508B5157M000 (EPCOS - TDK Electronics): 3000 Hrs @ 105°C, extended operating temperature range (-40°C ~ 105°C)
B43640B5157M000 (EPCOS - TDK Electronics): 2000 Hrs @ 105°C, extended operating temperature range (-40°C ~ 105°C)

All upgraded substitutes are ROHS3 compliant and maintain through-hole, radial snap-in package compatibility.

Frequently Asked Questions (FAQ)

Q: Can I use a 450 V rated capacitor in place of a 400 V rated capacitor? A: Yes. A higher voltage rating provides additional safety margin and is electrically compatible in circuits designed for 400 V operation. The capacitor will not be overstressed at the lower voltage.

Q: What is the significance of lifetime rating differences (2000 Hrs vs. 3000 Hrs vs. 5000 Hrs @ 105°C)? A: Lifetime rating indicates the expected operational duration at maximum rated temperature (105°C) before capacitance degradation reaches the tolerance limit. Extended lifetime ratings provide longer service life in high-temperature applications. For room-temperature operation, all parts will exceed their rated lifetime.

Q: Are there mechanical compatibility concerns between substitute parts? A: All listed substitutes maintain the same lead spacing (10.00 mm) and mounting type (through-hole, radial snap-in). However, verify the following dimensions against your PCB layout: diameter (25.00 mm vs. 25.40 mm for EKMQ401VSN151MQ25S) and height (1.181" to 1.260" range). The LGU2G151MELA has reduced height (1.181"), which may provide additional clearance.

Q: What is the difference between Nichicon LAS, LGU, and LGX series? A: These are different product lines from Nichicon with varying lifetime ratings. LAS provides 2000 Hrs @ 105°C, LGU provides 3000 Hrs @ 105°C, and LGX provides 5000 Hrs @ 105°C. All maintain the same capacitance and tolerance specifications.

Q: Can I substitute a Rubycon part for a Nichicon part? A: Yes, provided electrical specifications (capacitance, voltage, tolerance) and mechanical dimensions (lead spacing, package type, mounting) are identical. All listed Rubycon substitutes (450MXH150MEFCSN25X30, 450VXG150MEFCSN25X30, 450VXH150MEFCSN25X30) meet these criteria and are ROHS3 compliant.

Q: What does ROHS3 compliance mean? A: ROHS3 compliance indicates the part meets the Restriction of Hazardous Substances Directive, restricting the use of specific hazardous materials in electrical and electronic equipment. All listed substitute parts are ROHS3 compliant.

Q: Is the EKMQ401VSN151MQ25S a suitable direct replacement? A: The EKMQ401VSN151MQ25S is electrically equivalent (150 µF, 400 V, 2000 Hrs @ 105°C) and mechanically compatible for through-hole mounting. The diameter is 25.40 mm versus 25.00 mm for the original part; verify PCB layout clearance before selection.

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