LAK2G271MELC35ZB

The LAK2G271MELC35ZB is a 270 µF, 400 V aluminum electrolytic capacitor from Nichicon’s LAK series featuring a snap‑in terminal can (φ35 × 35 mm). It is a polarized, radial snap‑in type designed for general‑purpose power applications where high voltage, thermal endurance and robust safety behavior are required.

Built for equipment operating in voltage‑fluctuating environments, this capacitor combines 2000 hours endurance at 105°C under rated ripple current with improved safety measures and RoHS compliance to deliver reliable DC bus smoothing and energy storage for industrial power electronics and related systems.

Key Features

• Snap‑in high‑voltage package — 400 V rated snap‑in terminal can, size φ35 × 35 mm, for secure PCB mounting and high‑voltage DC bus applications.
• Capacitance and tolerance — 270 µF with ±20% tolerance (at 120 Hz, 20°C), providing predictable bulk capacitance for power supply filtering and energy storage.
• High temperature endurance — Withstands 2000 hours of rated ripple current at 105°C; capacitance change remains within ±20% after endurance test per series specification.
• Ripple current capability — Rated ripple current of 960 mA at 120 Hz and 1.104 A at 10 kHz, suitable for AC ripple handling in power conversion circuits.
• Safety performance — Improved safety features for abnormally excessive voltage including a pressure relief vent that operates without flames or dangerous dispersion under test conditions defined for the LAK series.
• Electrical loss and leakage — tan δ 0.20 max (120 Hz, 20°C); leakage current specified by I ≤ 3√(C·V) μA after 5 minutes’ application of rated voltage at 20°C.
• Operating range and compliance — Rated for −25°C to +105°C operating temperature range and RoHS compliant (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial power supplies — Bulk smoothing and ripple suppression on high‑voltage DC rails in industrial and factory automation power supplies.
• Inverters and motor drives — DC bus energy storage and ripple handling in inverter and motor control systems exposed to fluctuating supply conditions.
• Uninterruptible power systems (UPS) — Energy buffering and stable DC link performance where long thermal endurance and safety behavior are important.
• Voltage‑fluctuating equipment — Designed for equipment used in environments with supply variation, leveraging the series’ extended voltage range and safety features.

Unique Advantages

• Proven thermal endurance: 2000 hours at 105°C under rated ripple current delivers predictable lifetime performance for high‑temperature applications.
• High‑voltage DC capability: 400 V rating paired with 270 µF capacitance provides substantial energy storage for DC bus and filtering functions.
• Secure snap‑in mounting: Radial, can‑style snap‑in terminals simplify assembly and provide stable mechanical retention on the PCB.
• Measured ripple handling: Specified ripple currents at 120 Hz and 10 kHz allow designers to match capacitor selection to expected ripple profiles.
• Safety‑oriented design: Pressure relief vent and series safety testing reduce the risk of hazardous failure modes under abnormal over‑voltage conditions.
• Regulatory compliance: RoHS compliant for designs requiring restricted‑substance conformance.

Why Choose LAK2G271MELC35ZB?

The LAK2G271MELC35ZB positions itself as a robust, general‑purpose high‑voltage electrolytic capacitor for power electronics designs that demand thermal endurance and explicit safety behavior. Its combination of a 400 V rating, substantial capacitance, specified ripple capability and 2000‑hour endurance at 105°C makes it a practical choice for industrial power supplies, inverters, UPS systems and equipment exposed to fluctuating voltages.

Engineers specifying this Nichicon LAK series part benefit from clear, measured electrical characteristics (leakage, tan δ, ripple current), safety test limits, and RoHS compliance—helping reduce design uncertainty and support long‑term reliability in demanding power applications.

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