LLS2V151MELY Equivalent & Substitute Parts

Part Overview

The LLS2V151MELY is a 150 µF, 350 V aluminum electrolytic capacitor manufactured by Nichicon in the LLS series. This radial, can-style snap-in capacitor is designed for general-purpose applications requiring stable capacitance and reliable performance across industrial temperature ranges. The part is currently active in production with ROHS3 compliance and is suitable for through-hole mounting in standard PCB layouts. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity when the primary part becomes unavailable.

Substiute Parts

LLS2V151MELY

NichiconIn Stock: 878LLS2V151MELY Datasheet

Current PartRFQ

LLS2V151MELZ

NichiconIn Stock: 1230LLS2V151MELZ Datasheet

SimilarRFQ

ESMQ351VSN151MP25S

Chemi-ConIn Stock: 970ESMQ351VSN151MP25S Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LLS2V151MELY is determined by strict equivalence across the following critical parameters:

• Capacitance value: 150 µF (exact match required)
• Rated voltage: 350 V (exact match required)
• Tolerance: ±20% (exact match required)
• Package type: Radial, Can - Snap-In (exact match required)
• Mounting type: Through Hole (exact match required)
• Polarization: Polar (exact match required)
• Operating temperature range: -25°C ~ 85°C (exact match required)

Substitute parts may vary in physical dimensions (diameter and height), lead spacing tolerance, ripple current ratings, and lifetime specifications, provided all critical parameters remain identical. These variations are acceptable because they do not affect electrical compatibility or functional performance in the application circuit.

Parameter Comparison

Engineering Selection Recommendations

All three parts meet the core electrical and mechanical substitution criteria. Selection should be based on the following factors:

LLS2V151MELY and LLS2V151MELZ are both Nichicon LLS series components with identical electrical specifications and 3000-hour lifetime ratings at 85°C. The primary difference is physical dimension: LLS2V151MELZ has a larger diameter (22.00 mm vs. 20.00 mm) but maintains the same height and lead spacing. Both carry ROHS3 compliance certification.

ESMQ351VSN151MP25S is a Chemi-Con SMQ series alternative with identical electrical parameters but a reduced lifetime specification of 2000 hours at 85°C and a shorter seated height (25.00 mm vs. 32.00 mm). This part carries RoHS compliance certification. The reduced height may provide space advantages in compact layouts, but the lower lifetime rating should be evaluated against application duty cycle requirements.

All parts are active products with current manufacturing status and full regulatory compliance documentation available.

Frequently Asked Questions (FAQ)

Q: Can LLS2V151MELZ be used as a direct replacement for LLS2V151MELY?

A: Yes. Both parts share identical electrical specifications: 150 µF capacitance, 350 V rated voltage, ±20% tolerance, and 3000-hour lifetime at 85°C. The physical diameter difference (22.00 mm vs. 20.00 mm) requires PCB layout verification to confirm clearance around the component footprint. Lead spacing and mounting type are identical.

Q: What is the key difference between the Nichicon LLS series and Chemi-Con SMQ series options?

A: The primary difference is lifetime specification. Nichicon LLS parts are rated for 3000 hours at 85°C, while the Chemi-Con ESMQ351VSN151MP25S is rated for 2000 hours at 85°C. Both maintain identical capacitance, voltage, and tolerance values. The Chemi-Con part also features a shorter seated height (25.00 mm), which may be advantageous in space-constrained designs.

Q: Are all three parts RoHS compliant?

A: Yes. LLS2V151MELY and LLS2V151MELZ carry ROHS3 compliance certification. ESMQ351VSN151MP25S carries RoHS compliance certification. All parts meet regulatory requirements for lead-free manufacturing and hazardous substance restrictions.

Q: Does the difference in ripple current ratings affect substitution compatibility?

A: No. Ripple current ratings indicate the maximum AC current the capacitor can safely handle. All three parts have ripple current ratings within a narrow range (1.1–1.2 A @ 120 Hz and 1.573–1.716 A @ 50 kHz). These variations do not affect electrical compatibility in the circuit. Selection should be based on the actual ripple current requirement of the application.

Q: Can ESMQ351VSN151MP25S be used in applications requiring extended operational life?

A: The 2000-hour lifetime rating of ESMQ351VSN151MP25S is lower than the 3000-hour rating of the Nichicon alternatives. Applications requiring continuous operation at elevated temperatures over extended periods should prioritize the Nichicon LLS series parts to ensure adequate component lifespan.

Q: Are there any mounting or PCB layout considerations when switching between these parts?

A: Lead spacing is identical across all three parts (0.394" / 10.00 mm), so PCB footprints remain compatible. However, physical diameter and height differences require layout verification. LLS2V151MELZ and ESMQ351VSN151MP25S both have larger diameters (22.00 mm) compared to LLS2V151MELY (20.00 mm). ESMQ351VSN151MP25S has a shorter height (25.00 mm vs. 32.00 mm), which may affect clearance in vertically constrained assemblies.