LGR2W151MELB40

The LGR2W151MELB40 is a Nichicon LGR series aluminum electrolytic capacitor in a snap‑in terminal (radial can) package. It provides 150 µF capacitance at a 450 V rated voltage and is designed for general‑purpose applications that require high voltage handling and long operational life.

Key value drivers include a 105°C long‑life assurance with 10,000 hours endurance under rated ripple conditions, RoHS compliance, and snap‑in mounting for secure board installation.

Key Features

• Capacitance & Voltage — 150 µF nominal capacitance with a 450 V rated voltage and ±20% tolerance.
• Long‑Life Endurance — Qualified for 10,000 hours at 105°C with DC bias plus rated ripple current; after test the capacitance change is within ±25% and leakage current remains ≤ initial specified value.
• High Temperature Range — Operating temperature range of −25°C to +105°C for the 400–450 V class.
• Ripple Current Performance — Rated ripple current of 790 mA at 120 Hz and 1.13 A at 50 kHz; frequency coefficient data is provided for scaling ripple with frequency (e.g., coefficient = 1.00 at 120 Hz and ≈1.43 at 50 kHz+ for 400–450 V).
• Low‑Temperature Stability — Impedance ratio Z(−25°C)/Z(+20°C) for 400–450 V is specified (max. 8), enabling predictable behavior across temperature extremes.
• Leakage & Dissipation — Leakage current specification I ≤ 3√CV (µA) after 5 minutes at 20°C; tan δ max. 0.20 at the 450 V rating (measured at 120 Hz, 20°C).
• Package & Mounting — Snap‑in terminal type in a radial, can‑snap‑in package for robust board retention; physical size approximately L: 4 × D: 3 cm and a maximum seated height of 1.575 inch.
• Compliance — RoHS compliant (meets directive requirements indicated in series documentation).

Typical Applications

• General‑Purpose High‑Voltage Power Electronics — Use where a 150 µF, 450 V electrolytic capacitor with long life at elevated temperature is required for energy storage or smoothing functions.
• Power Filtering and Ripple Management — Suitable when predictable ripple current handling is needed (790 mA at 120 Hz; 1.13 A at 50 kHz) with frequency‑dependent coefficients provided for design scaling.
• Thermally Demanding Environments — Appropriate for applications requiring sustained operation at up to 105°C with long‑term endurance data (10,000 hours) and defined post‑endurance performance limits.

Unique Advantages

• Proven Long Life: Endurance tested for 10,000 hours at 105°C with specified limits on capacitance change, tan δ, and leakage current, supporting long service intervals.
• High Voltage Capability: 450 V rating enables use in higher DC bus and energy storage applications where lower‑voltage capacitors are not suitable.
• Measured Ripple Performance: Published ripple current ratings at 120 Hz and 50 kHz plus frequency coefficients allow designers to size capacitors confidently across frequencies.
• Controlled Dielectric Loss: tan δ maximum of 0.20 at 450 V (120 Hz, 20°C) provides an explicit dissipation metric for thermal and loss budgeting.
• Defined Leakage Behavior: Leakage current bound by I ≤ 3√CV (µA) after voltage application provides a verifiable parameter for standby and hold‑up designs.
• RoHS Compliant: Conforms to RoHS directive requirements as noted for the LGR series.

Why Choose LGR2W151MELB40?

The LGR2W151MELB40 combines a high 450 V rating with a 150 µF capacitance and a snap‑in radial can package to meet general‑purpose, high‑voltage requirements where long operational life at elevated temperature is important. Its published endurance, leakage, dissipation, and ripple specifications give design and procurement teams explicit, test‑based parameters to use during selection and qualification.

Manufactured by Nichicon as part of the LGR long‑life series, this capacitor is well suited for engineers specifying components with defined thermal endurance, frequency‑dependent ripple handling, and RoHS compliance.

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