LQS2G101MELZ25

The LQS2G101MELZ25 is a Nichicon LQS series snap‑in aluminum electrolytic capacitor engineered for high‑speed charge‑discharge and high‑frequency power environments. It is a polarized, radial can (snap‑in) capacitor rated 100 µF at 400 V and designed for power electronics such as inverters and AC servomotor drive systems.

Key value propositions include a 105°C operating limit, defined endurance for charge‑discharge cycling, and performance data for both low‑ and high‑frequency ripple conditions—making it suitable where regenerative voltages, fluctuating line conditions, or voltage‑doubler rectifier circuits are present. The device is RoHS compliant.

Key Features

• Capacitance & Voltage: 100 µF nominal capacitance at a rated voltage of 400 V.
• High‑temperature operation: Rated for use from –25°C to +105°C with endurance specified for 3000 hours at 105°C under DC bias plus rated ripple current.
• High‑speed charge‑discharge endurance: Specified endurance for charge‑discharge behavior after 50 million cycles (cycle: 6 Hz, charge‑discharge voltage difference = rated voltage + 0.35 V) with capacitance change within ±20% of initial value.
• Ripple current performance: Rated ripple current of 680 mA at 120 Hz and 972.4 mA at 50 kHz, supporting both low‑ and high‑frequency ripple conditions.
• Impedance and dissipation: For the 400 V rating the tangent of loss angle (tan δ) is specified with a maximum of 0.15; low‑temperature impedance ratio Z(–25°C)/Z(+20°C) is specified up to 8 for the 350–450 V range.
• Leakage current: Leakage current limit defined by I ≤ 3√(C·V) µA after 5 minutes application of rated voltage at 20°C.
• Robust mounting: Snap‑in terminal, radial can package for secure board mounting in power assemblies; physical size approximately Ø22 mm × 25 mm (L: 2.5 cm × D: 2.2 cm).
• Regulatory compliance: Compliant to the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• AC servomotor drives: Used for handling high‑frequency regenerative voltages and smoothing energy during braking and regeneration events.
• General inverters and motor controllers: Provides high‑temperature, high‑ripple capability for inverter DC bus filtering and energy buffering.
• Voltage‑doubler rectifier circuits: Suitable for rectifier stages that require capacitors rated for fluctuating voltages and charge‑discharge cycling.
• Equipment operating in unstable voltage areas: Designed for systems exposed to line fluctuations where robust ripple and endurance characteristics are required.

Unique Advantages

• Temperature‑rated reliability: 105°C operating capability and 3000 h endurance at 105°C under DC bias plus rated ripple current provide predictable lifetime data for thermal‑stress environments.
• High cycle endurance: Qualified for 50 million charge‑discharge cycles at specified test conditions, with defined limits for capacitance, tan δ and leakage current after the test.
• Dual‑frequency ripple characterization: Specified ripple current at both 120 Hz and 50 kHz enables designers to size the capacitor for low‑frequency mains ripple and high‑frequency inverter switching ripple.
• Defined electrical limits: Clear leakage current formula (I ≤ 3√CV µA) and tan δ maximums (0.15 at 400 V) simplify electrical verification and margining in designs.
• Secure snap‑in mounting: Radial, snap‑in can package supports robust PCB retention for power modules and assemblies subject to vibration or handling.
• RoHS compliance: Meets applicable RoHS directives for restricted substances.

Why Choose LQS2G101MELZ25?

The LQS2G101MELZ25 delivers a specification set tailored to power electronics designers needing a compact, snap‑in aluminum electrolytic capacitor that balances high voltage rating (400 V), defined high‑temperature endurance (105°C, 3000 h), and documented charge‑discharge cycle capability. Its ripple current ratings at both mains and switching frequencies, together with explicit leakage and loss‑angle limits, make it straightforward to evaluate in inverter, servo, and rectifier applications.

This part is appropriate for engineers specifying capacitors for systems exposed to fluctuating voltages and regenerative energy flows, and for procurement teams seeking a RoHS‑compliant component from the Nichicon LQS series with published endurance and electrical data.

Request a quote or submit an inquiry to receive pricing, availability, and technical details for LQS2G101MELZ25.