LQS2G271MELB30

The LQS2G271MELB30 is a snap‑in terminal aluminum electrolytic capacitor engineered for high‑speed charge–discharge applications. It provides 270 µF capacitance at a 400 V rating and is polarized for DC use.

Designed for power electronics that experience high‑frequency regenerative voltage and fluctuating supply conditions, this capacitor targets general inverters, AC servomotor regenerative circuits and rectifier/voltage‑doubler circuits where high temperature endurance and reliable ripple handling matter.

Key Features

• Electrical: 270 µF, 400 V — Rated capacitance of 270 µF at 400 V for DC power applications.
• High temperature operation — Specified operating range from −25°C to +105°C, enabling use in elevated ambient conditions.
• High‑speed charge–discharge capability — Engineered for rapid charge/discharge behavior suitable for high‑frequency regenerative voltages and inverter environments.
• Polarized design with ±20% tolerance — Polar capacitor with capacitance tolerance of −20% to +20% at 120 Hz, 20°C.
• Snap‑in mounting, radial can — Snap‑in terminal package for secure board retention in power assemblies.
• Ripple current performance — Rated ripple current of 1.22 A at 120 Hz and 1.745 A at 50 kHz to support ripple and high‑frequency loading.
• Durability and endurance — Rated for 3000 hours at 105°C under DC bias plus rated ripple current; charge–discharge endurance tested for 50 million cycles with defined limits on capacitance change, tan δ and leakage.
• Leakage and dissipation control — Leakage current specified by I ≤ 3√(C·V) after conditioning; tan δ max. 0.15 at the 400 V rating (measured at 120 Hz, 20°C).
• RoHS compliant — Conforms to RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• AC servomotor regenerative circuits — Handles high‑frequency regenerative voltage pulses and rapid charge/discharge cycles in motor drive systems.
• General inverters and power converters — Provides bulk energy storage and ripple smoothing in inverter DC link and power conversion stages.
• Rectifier / voltage doubler circuits — Suited for rectifier topologies that experience voltage fluctuation and require stable DC filtering.
• Equipment in fluctuating voltage environments — Designed for systems exposed to supply instability where high temperature and ripple durability are required.

Unique Advantages

• High voltage capability: 400 V rating supports common DC link voltages in inverter and motor drive systems.
• High‑temperature endurance: Rated to 105°C with a 3000‑hour endurance specification for reliable operation in elevated ambient temperatures.
• Proven charge–discharge resilience: Endurance testing for 50 million charge/discharge cycles ensures capacitance stability and controlled tan δ/leakage under repeated stress.
• Designed for high‑frequency ripple: Specified ripple current values at 120 Hz and 50 kHz provide measurable limits for thermal and ripple management in design.
• Secure snap‑in mounting: Snap‑in radial can eases mechanical retention in power electronics assemblies and helps maintain electrical reliability under vibration.
• Standards‑aligned leakage and dissipation specs: Leakage current and tan δ limits are specified to support predictable performance and margining in power designs.

Why Choose LQS2G271MELB30?

The LQS2G271MELB30 combines a high voltage rating (400 V), substantial capacitance (270 µF) and a 105°C operating temperature to address demanding power‑electronics roles where fast charge/discharge cycles and supply fluctuations occur. Its snap‑in form factor and quantified ripple and endurance specifications make it suitable for engineers building inverter, motor drive and rectifier systems that require predictable thermal and electrical behavior.

With defined leakage, tan δ and lifecycle endurances, this capacitor is positioned for designs that demand measurable, verifiable performance over long operational periods while remaining compliant with RoHS requirements.

If you would like a quote or need more information for procurement or design integration, please submit a request to our sales team specifying the LQS2G271MELB30 part number and your project requirements.