UCY2G121MHD6

The UCY2G121MHD6 is a high-reliability aluminum electrolytic capacitor from Nichicon's UCY series. It is a radial-lead, polarized capacitor rated at 120 µF and 400 V, designed for applications demanding sustained ripple handling and long operational life at elevated temperatures.

Typical use cases include power supplies, ballast and lighting circuits, and automotive power electronics where high voltage, long endurance and stable performance across frequency and temperature are required. The part combines high ripple-current capability with a 12000-hour endurance at 105°C and AEC-Q200 qualification.

Key Features

• Capacitance & Voltage — 120 µF nominal capacitance with a 400 V rated voltage and polarization for high-voltage DC applications.
• High Ripple Current — Rated for 950 mA at 120 Hz (low frequency) and 1.9 A at 100 kHz (high frequency), providing robust performance under switching and ripple-loaded conditions.
• Long Endurance — Load-life endurance of 12000 hours at 105°C, with specified limits on capacitance change, dissipation factor and leakage after endurance testing.
• Temperature Range — Operates from −40°C to 105°C to cover a wide set of thermal environments.
• Loss Tangent (tan δ) — tan δ specified at 0.24 (measurement at 20°C, 120 Hz for 400 V rating) to help assess dissipation characteristics.
• Leakage Current & Tolerance — Leakage current specified (2020 µA listed for this part) and capacitance tolerance of −20% to +20% for predictable circuit behavior.
• Packaging & Mounting — Radial lead can (φ16 × 40L) with 7.5 mm lead spacing (±0.5 mm); available bulk (no terminal forming) or bag packing for through-hole assembly.
• Qualification & Compliance — AEC-Q200 rating and RoHS compliance for regulated environments and demanding reliability requirements.

Typical Applications

• Automotive Power Electronics — Suitable for DC-link, filtering and energy storage in automotive power systems where AEC-Q200 qualification is required.
• Switch-Mode Power Supplies — Provides ripple filtering and bulk capacitance for high-voltage SMPS designs, leveraging its high ripple-current ratings.
• Ballasts and Lighting — Designed for ballast and lighting power stages that require sustained ripple handling and long life at elevated temperatures.
• Industrial Power Control — Fits industrial converters and motor-drive support circuits that need durable, high-voltage electrolytic capacitance.

Unique Advantages

• High-frequency and low-frequency ripple handling: Explicit ripple ratings of 950 mA at 120 Hz and 1.9 A at 100 kHz allow designers to specify a single capacitor for a range of switching frequencies.
• Extended operational life at elevated temperature: 12000-hour endurance at 105°C provides predictable long-term performance and reduced maintenance cycles.
• Automotive-grade reliability: AEC-Q200 qualification supports use in demanding and safety-conscious automotive applications.
• Clear electrical characteristics: Specified tan δ (0.24 at 20°C, 120 Hz), leakage current, and ±20% capacitance tolerance enable accurate electrical modeling during design.
• Through-hole radial package: φ16 × 40L can with 7.5 mm lead spacing simplifies mounting and replacement in PCB designs and prototyping.
• Regulatory compliance: RoHS compliant for use in regulated markets and supply chains.

Why Choose UCY2G121MHD6?

The UCY2G121MHD6 delivers a balanced combination of high-voltage capability (400 V), substantial capacitance (120 µF), and engineered endurance (12000 hours at 105°C) in a radial-lead package. Its defined ripple-current ratings across low and high frequencies, along with measured dissipation and leakage specifications, make it straightforward to integrate into power electronics, ballast, and automotive systems where durability and predictable performance are required.

Manufactured by Nichicon and offered in production quantities, this part is suited to engineers and procurement teams specifying robust electrolytic bulk or filter capacitance for high-voltage, high-reliability designs.

Request a quote or contact sales to discuss pricing, availability and volume lead times for the UCY2G121MHD6.