LGUW6151MELZ Equivalent & Substitute Parts

Part Overview

The LGUW6151MELZ 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 through-hole mounting. The part is active in production status and fully compliant with RoHS3 and REACH regulations.

Equivalent and substitute parts are identified to address inventory availability, extended operational lifetime requirements, or specific mechanical constraints in board layout and mounting configurations.

Substiute Parts

LGUW6151MELZ

NichiconIn Stock: 1118LGUW6151MELZ Datasheet

Current PartRFQ

LGW2W151MELZ40

NichiconIn Stock: 1420LGW2W151MELZ40 Datasheet

UpgradeRFQ

LGGW6151MELA25

NichiconIn Stock: 1651LGGW6151MELA25 Datasheet

SimilarRFQ

LGNW6151MELY40

NichiconIn Stock: 1001LGNW6151MELY40 Datasheet

SimilarRFQ

LGUW6151MELB

NichiconIn Stock: 1352LGUW6151MELB Datasheet

SimilarRFQ

ELXS421VSN151MP35S

Chemi-ConIn Stock: 1145ELXS421VSN151MP35S Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution relationships for the LGUW6151MELZ are determined by the following criteria:

Primary Substitution Criteria:

• Capacitance value: 150 µF (exact match required)
• Voltage rating: 420 V minimum (higher ratings acceptable for direct substitution)
• Tolerance: ±20% (standard for this category)
• Lead spacing: 0.394" (10.00 mm) (fixed for PCB compatibility)
• Package type: Radial, Can - Snap-In (mechanical form factor)
• Mounting type: Through Hole (assembly process compatibility)
• Polarization: Polar (electrical requirement)

Substitution Categories:

Upgrade Substitutes – Higher voltage rating with identical mechanical and electrical characteristics:

• LGW2W151MELZ40: 450 V rating (50 V higher), same 3000 Hrs @ 105°C lifetime, identical physical dimensions and lead spacing

Similar Substitutes – Same voltage and capacitance with variations in physical dimensions or lifetime:

• LGGW6151MELA25: 420 V, 2000 Hrs @ 105°C lifetime, different can diameter (0.984" vs 0.866")
• LGNW6151MELY40: 420 V, 3000 Hrs @ 105°C lifetime, different can diameter (0.787" vs 0.866")
• LGUW6151MELB: 420 V, 3000 Hrs @ 105°C lifetime, different can diameter (1.181" vs 0.866")

Direct Substitutes – Different manufacturer with identical electrical specifications:

• ELXS421VSN151MP35S: Chemi-Con manufacturer, 420 V, 5000 Hrs @ 105°C lifetime (extended), identical lead spacing and can diameter

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (No Layout Changes): LGW2W151MELZ40 is the primary upgrade substitute. It maintains identical physical dimensions and lead spacing while providing 450 V rating. This part is active in production, RoHS3 compliant, and REACH unaffected. The higher voltage rating provides additional design margin without requiring PCB modifications.

ELXS421VSN151MP35S (Chemi-Con) offers the same can diameter and lead spacing as the original part with extended 5000-hour lifetime at 105°C. This part is active in production and meets all compliance requirements. Selection is appropriate when extended operational life is required.

For Layout-Constrained Applications: LGNW6151MELY40 provides a smaller can diameter (0.787" vs 0.866") with identical electrical specifications and 3000-hour lifetime. This part is suitable for space-constrained layouts while maintaining full electrical compatibility.

LGUW6151MELB offers a larger can diameter (1.181") with reduced height (0.984" vs 1.575"), providing alternative mechanical packaging for specific board geometries.

When Lifetime Reduction is Acceptable: LGGW6151MELA25 reduces operational lifetime to 2000 hours at 105°C but provides a compact form factor with reduced height (1.063" vs 1.575"). This part is suitable only when application duty cycle does not require the full 3000-hour specification.

All substitute parts maintain the required 420 V or higher voltage rating, ±20% tolerance, and through-hole snap-in package configuration.

Frequently Asked Questions (FAQ)

Q: Can LGW2W151MELZ40 be used as a direct replacement for LGUW6151MELZ? A: Yes. LGW2W151MELZ40 is a direct substitute with identical physical dimensions, lead spacing, and mechanical package. The 450 V rating is higher than the 420 V requirement and provides additional design margin. No PCB modifications are required.

Q: What is the difference between the Nichicon and Chemi-Con substitutes? A: ELXS421VSN151MP35S is manufactured by Chemi-Con rather than Nichicon. It maintains identical electrical specifications (150 µF, 420 V, ±20%) and physical dimensions but offers extended 5000-hour lifetime at 105°C compared to 3000 hours for the original part. Both manufacturers' parts are RoHS3 compliant and REACH unaffected.

Q: Can I use LGGW6151MELA25 if my application requires 3000-hour lifetime? A: No. LGGW6151MELA25 is rated for only 2000 hours at 105°C, which does not meet the 3000-hour specification. Use this part only when application requirements allow reduced operational lifetime.

Q: What are the mechanical constraints when selecting a substitute? A: All substitutes maintain the 0.394" (10.00 mm) lead spacing required for PCB hole pattern compatibility. However, can diameter and height vary. Verify that the selected substitute's physical dimensions fit within the available board space. LGNW6151MELY40 has the smallest diameter (0.787"), while LGUW6151MELB has the largest (1.181").

Q: Are all substitute parts currently in production? A: Yes. All listed substitute parts have active product status and are available in inventory. Compliance certifications (RoHS3, REACH) are identical across all parts.

Q: Does higher voltage rating affect circuit performance? A: No. A higher voltage rating (450 V vs 420 V) does not alter electrical performance in the circuit. The capacitance value, tolerance, and operating temperature range remain identical. Higher voltage rating provides additional safety margin and is electrically compatible.