UBY2A821MHL

The UBY2A821MHL is a radial-lead, high-reliability aluminum electrolytic capacitor from Nichicon's UBY series. It provides 820 µF capacitance at a 100 V rating in a compact φ18 × 35.5 mm can, designed for demanding temperature and ripple conditions.

Targeted for automotive and industrial power electronics, this part delivers high ripple-current capability, low ESR at high frequency, and AEC‑Q200 qualification for robust performance in harsh environments.

Key Features

• Capacitance & Voltage 820 µF rated capacitance at 100 V for energy storage and bulk decoupling in high-voltage designs.
• High Temperature Operation Rated for operation from −40 °C to +135 °C with endurance specified for high-temperature stress (2000 hours at 135 °C for 63–100 V units).
• Low ESR Equivalent series resistance of 23 mΩ measured at 20 °C / 100 kHz, supporting low-loss performance in high-frequency circuits.
• High Ripple Current Low-frequency ripple current 2.214 A (120 Hz) and high-frequency ripple current 3.690 A (100 kHz) for effective smoothing under heavy ripple loads.
• Loss Angle (tan δ) tan δ of 0.08 measured at 20 °C, 120 Hz, supporting predictable dissipation characteristics.
• Leakage Current Specified leakage current 2460 µA, suitable for applications where defined self-discharge behavior is required.
• Package & Mounting Radial lead can (φ18 × 35.5 mm) with 7.5 mm lead spacing (±0.5 mm); available in bulk (no terminal forming) or bag packing.
• Quality & Compliance AEC‑Q200 qualified and RoHS compliant, built for reliability in regulated environments.

Typical Applications

• Electric power steering (EPS) Bulk energy storage and ripple filtering for EPS control modules operating at elevated temperatures.
• Direct injection engine drive High-voltage smoothing and transient buffering in fuel injection and engine control systems.
• Automotive power electronics Decoupling and input/output filtering for in-vehicle power converters and motor drivers that require high ripple tolerance and temperature resilience.

Unique Advantages

• High ripple-handling capability: Specified low- and high-frequency ripple currents (2.214 A at 120 Hz and 3.690 A at 100 kHz) enable effective smoothing under heavy ripple loads.
• Low high-frequency losses: 23 mΩ ESR at 100 kHz reduces I²R losses and heating in high-frequency switching environments.
• Wide operating temperature: −40 °C to +135 °C rating with defined endurance at elevated temperature ensures predictable long-term behavior in hot environments.
• Automotive-level qualification: AEC‑Q200 rating supports use in designs requiring automotive-grade component qualification.
• Compact radial can: φ18 × 35.5 mm footprint with radial leads and 7.5 mm spacing simplifies PCB layout for through-hole designs requiring high capacitance.
• Regulatory compliance: RoHS compliant for use in regulated manufacturing environments.

Why Choose UBY2A821MHL?

UBY2A821MHL combines high capacitance (820 µF) and a 100 V rating with low ESR and strong ripple-current capability, making it suitable for power smoothing and transient buffering in high-voltage, high-temperature systems. Its AEC‑Q200 qualification and specified 2000-hour endurance at 135 °C for the 63–100 V range provide traceable reliability for demanding automotive and industrial applications.

This capacitor is a fit for engineers designing robust power subsystems—especially where elevated ambient temperatures, significant ripple stress, and proven component qualification are required. The compact radial can and standard lead spacing ease integration into through-hole assemblies while providing measurable, application-relevant electrical performance.

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