LQSW6121MELA25

The LQSW6121MELA25 is a polarized aluminum electrolytic capacitor in a snap‑in radial can designed for high‑temperature, high‑frequency power applications. It delivers 120 µF capacitance at a 420 V rating, optimized for robust charge‑discharge behavior and sustained operation up to 105°C.

Typical use cases include inverter and regenerative‑power circuits, rectifier/voltage‑doubler stages and other general purpose power electronic designs that require high voltage handling, predictable endurance and secure snap‑in mounting for mass production assembly.

Key Features

• Capacitance & Voltage: 120 µF nominal capacitance with a 420 V rated voltage for high‑voltage DC applications.
• High‑temperature operation: Rated for −25°C to +105°C continuous operation with a specified lifetime of 3000 hours at 105°C.
• Charge/discharge endurance: Designed for high‑speed charge‑discharge; series endurance testing specifies performance after 50 million cycles (6 Hz) with capacitance change within ±20%.
• Ripple current capability: Rated ripple current of 810 mA at 120 Hz and 1.158 A at 50 kHz for handling AC ripple in power conversion circuits.
• Loss and leakage characteristics: Tangent of loss angle (tan δ) ≤ 0.15 at 420 V (120 Hz, 20°C). Leakage current meets I ≤ 3√(C·V) (µA) after 5 minutes at 20°C.
• Package & mounting: Radial, snap‑in can (φ25 × 25 mm) for secure board mounting and tray packing suitable for mass production.
• Environmental compliance: RoHS compliant.

Typical Applications

• Inverters and motor drives: Supports high‑frequency regenerative voltages in AC servomotor and general inverter circuits.
• Power rectification: Used in rectifier circuits and voltage‑doubler topologies where high DC voltage and robust ripple handling are required.
• Voltage stabilization: Bulk energy storage and smoothing in power supplies exposed to fluctuating voltages.

Unique Advantages

• High voltage capability: 420 V rating enables use in elevated DC bus and high‑voltage power stages without the need for series stacking.
• Thermal robustness: 105°C rated temperature and a 3000‑hour endurance at that temperature provide predictable lifetime under elevated thermal stress.
• High‑frequency readiness: Engineered for high‑speed charge/discharge and specified ripple performance at both low and high frequencies.
• Production‑friendly packaging: Snap‑in radial can with tray packing simplifies assembly and handling for volume manufacturing.
• Measurable reliability metrics: Endurance and charge‑discharge test limits (capacitance, tan δ, leakage) are defined for engineering validation and design margining.

Why Choose LQSW6121MELA25?

The LQSW6121MELA25 positions itself as a practical high‑voltage electrolytic solution for power electronics requiring a balance of capacitance, ripple handling and thermal endurance. Its 420 V rating, 120 µF capacitance and snap‑in package make it suitable for designers targeting inverter stages, regenerative systems and high‑voltage rectifiers that need repeatable performance over long duty cycles.

With defined endurance and leakage specifications, plus RoHS compliance and tray packing for mass production, this part is intended for engineering teams and procurement seeking a reliable, manufacturable capacitor option backed by clear datasheet limits.

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