LQR2V123MSEHBB

The LQR2V123MSEHBB is an aluminum electrolytic capacitor in a screw‑terminal can designed for high‑speed charge–discharge and power‑electronics use. This 12,000 µF, 350 V polarized capacitor is optimized for applications that require large bulk capacitance, robust ripple handling and durable operation at elevated temperatures.

Designed for regenerative and inverter environments, the LQR2 series targets AC servomotor regenerative voltage handling, general inverters, voltage‑fluctuating equipment and rectifier circuits such as voltage doublers. The device is RoHS compliant and intended for general purpose power systems.

Key Features

• Capacitance & Voltage — 12,000 µF nominal capacitance at a rated voltage of 350 V, with capacitance tolerance ±20% (120 Hz, 20°C).
• Screw Terminal Construction — Radial can with screw terminals for secure bolted connections and robust current transfer in power assemblies.
• Operating Temperature & Lifetime — Rated for −25°C to +85°C with endurance specified as 5,000 hours at 85°C under DC bias plus rated ripple current.
• High Ripple Current Capability — Supports 35.7 A ripple at 120 Hz and 49.98 A at 10 kHz, enabling effective smoothing in high‑current, high‑frequency circuits.
• Endurance & Charge–Discharge Reliability — Meets endurance after 20 million charge–discharge cycles (ΔV = rated voltage × 0.3, 3 Hz) with limits on capacitance change, tan δ and leakage current.
• Leakage Current Spec — Leakage current after 5 minutes is specified as not more than 3√(V) µA or 5 mA, whichever is smaller (at 20°C), providing a measurable retention characteristic for design verification.
• Physical Package & Mounting — Radial can with screw terminals; nominal dimensions include length 19 cm and diameter 7.62 cm for planning mechanical integration.
• Regulatory Compliance — Compliant with the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• AC Servomotor Regeneration — Bulk energy storage for high‑frequency regenerative voltage in servo drives, smoothing regenerating pulses and supporting power feedback.
• General Inverters — DC bus and smoothing capacitor for inverter systems where sustained ripple currents and voltage fluctuation tolerance are required.
• Voltage‑Fluctuating Equipment — Systems operating in environments with variable supply conditions, using the capacitor’s large capacitance and endurance to stabilize DC rails.
• Rectifier / Voltage Doubler Circuits — Bulk smoothing and energy reservoir in rectifier circuits including voltage doublers to maintain DC stability.

Unique Advantages

• Large Bulk Capacitance: 12,000 µF at 350 V provides substantial energy storage for DC bus smoothing and transient buffering in power electronics.
• Robust Ripple Handling: Specified ripple currents of 35.7 A (120 Hz) and 49.98 A (10 kHz) support high‑current filtering and high‑frequency switching environments.
• Durability at Elevated Temperature: Endurance rating of 5,000 hours at 85°C under DC bias and ripple current demonstrates suitability for prolonged thermal stress.
• Charge–Discharge Reliability: Validated for 20 million charge–discharge cycles (ΔV = 0.3 × Vr, 3 Hz) with controlled changes in capacitance, tan δ and leakage current.
• Secure, Serviceable Connections: Screw‑terminal can design enables solid mechanical fastening and straightforward service or replacement in the field.
• RoHS Compliant: Conforms to the RoHS directive, supporting regulatory requirements for equipment across relevant markets.

Why Choose LQR2V123MSEHBB?

The LQR2V123MSEHBB combines high nominal capacitance and a 350 V rating with a screw‑terminal package engineered for power‑electronics assemblies. Its specified high ripple current capability and validated endurance under charge–discharge cycling make it a practical choice for inverter, servo and rectifier designs that demand stable DC‑bus performance over time.

This capacitor is suited to engineers and purchasing teams designing or maintaining regenerative drives, inverters and voltage‑fluctuation‑tolerant systems who require measurable lifetime and electrical characteristics backed by Nichicon’s LQR series specifications.

Request a quote or submit a sales inquiry to discuss pricing, lead times and how LQR2V123MSEHBB can fit your power‑electronics design requirements.