LGUW6151MELY Equivalent & Substitute Parts

Part Overview

The LGUW6151MELY is a 150 µF, 420 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 identified to support procurement flexibility, inventory management, and design continuity when the primary part becomes unavailable.

Key Parameters

Parameter	Value
Capacitance	150 µF
Voltage - Rated	420 V
Tolerance	±20%
Lifetime @ Temperature	3000 Hrs @ 105°C
Operating Temperature Range	-25°C ~ 105°C
Polarization	Polar
Package / Case	Radial, Can - Snap-In
Mounting Type	Through Hole
Lead Spacing	0.394" (10.00 mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment with the following electrical and mechanical parameters:

Capacitance: 150 µF (exact match required)
Voltage Rating: 420 V (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)
Package Type: Radial, Can - Snap-In (exact match required)
Mounting Type: Through Hole (exact match required)
Lead Spacing: 0.394" (10.00 mm) (exact match required)
Operating Temperature Range: -25°C ~ 105°C (exact match required)
RoHS Status: ROHS3 Compliant (exact match required)

All substitute parts listed meet these criteria. Variations in physical dimensions (diameter and height), ripple current ratings, and lifetime specifications are permitted within the scope of functional equivalence, provided the core electrical and mechanical parameters remain unchanged.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	Lifetime @ 105°C	Size Dia (mm)	Height (mm)	Lead Spacing (mm)	Ripple Current @ 120 Hz	Ripple Current @ 50 kHz	Inventory
LGUW6151MELY	Nichicon	LGU	150 µF	420 V	±20%	3000 Hrs	20.00	50.00	10.00	880 mA	1.2584 A	1055 Pcs
LGNW6151MELY40	Nichicon	LGN	150 µF	420 V	±20%	3000 Hrs	20.00	42.00	10.00	840 mA	1.2012 A	898 Pcs
LGGW6151MELA25	Nichicon	LGG	150 µF	420 V	±20%	2000 Hrs	25.00	27.00	10.00	820 mA	1.1726 A	1630 Pcs
LGUW6151MELB	Nichicon	LGU	150 µF	420 V	±20%	3000 Hrs	30.00	25.00	10.00	880 mA	1.2584 A	1275 Pcs
LGUW6151MELZ	Nichicon	LGU	150 µF	420 V	±20%	3000 Hrs	22.00	40.00	10.00	880 mA	1.2584 A	1095 Pcs

Engineering Selection Recommendations

All listed substitute parts are Active status and ROHS3 compliant, meeting regulatory requirements equivalent to the primary part LGUW6151MELY. Selection among substitutes should be based on:

Physical space constraints: LGNW6151MELY40 offers the most compact height (42.00 mm). LGGW6151MELA25 provides the shortest overall height (27.00 mm) but with increased diameter (25.00 mm) and reduced lifetime rating (2000 Hrs vs. 3000 Hrs).
Ripple current performance: LGUW6151MELY, LGUW6151MELB, and LGUW6151MELZ deliver identical ripple current specifications (880 mA @ 120 Hz, 1.2584 A @ 50 kHz). LGNW6151MELY40 and LGGW6151MELA25 have slightly lower ripple current ratings.
Lifetime requirements: LGUW6151MELY, LGNW6151MELY40, LGUW6151MELB, and LGUW6151MELZ all provide 3000-hour lifetime at 105°C. LGGW6151MELA25 is rated for 2000 hours at 105°C.
Inventory availability: LGGW6151MELA25 has the highest stock level (1630 Pcs).

Frequently Asked Questions (FAQ)

Q: Can LGGW6151MELA25 be used as a direct replacement for LGUW6151MELY?

A: LGGW6151MELA25 meets all core electrical and mechanical substitution criteria (150 µF, 420 V, ±20% tolerance, radial snap-in package, 10.00 mm lead spacing, through-hole mounting). However, it has a reduced lifetime rating of 2000 hours at 105°C compared to 3000 hours for LGUW6151MELY. Physical dimensions also differ (25.00 mm diameter vs. 20.00 mm, and 27.00 mm height vs. 50.00 mm). Suitability depends on application lifetime requirements and available PCB space.

Q: What is the primary difference between LGUW6151MELY and LGNW6151MELY40?

A: Both parts share identical electrical specifications (150 µF, 420 V, ±20%, 3000 Hrs @ 105°C). The primary difference is physical height: LGNW6151MELY40 is 42.00 mm tall versus 50.00 mm for LGUW6151MELY. LGNW6151MELY40 also has slightly lower ripple current ratings (840 mA @ 120 Hz vs. 880 mA). Selection depends on space constraints and ripple current requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (LGNW6151MELY40, LGGW6151MELA25, LGUW6151MELB, LGUW6151MELZ) are ROHS3 compliant and REACH unaffected, matching the compliance status of LGUW6151MELY.

Q: Which substitute offers the best form factor for compact designs?

A: LGGW6151MELA25 provides the most compact height at 27.00 mm. However, its diameter increases to 25.00 mm, and lifetime is reduced to 2000 hours at 105°C. For height reduction with maintained 3000-hour lifetime, LGNW6151MELY40 (42.00 mm height) is the optimal choice.

Q: Do all substitutes maintain the same lead spacing?

A: Yes. All substitute parts maintain 0.394" (10.00 mm) lead spacing, ensuring PCB footprint compatibility with the original LGUW6151MELY design.

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