UCS2C820MHD

The UCS2C820MHD is a miniature aluminum electrolytic capacitor from Nichicon’s UCS series, configured as a radial-lead can for through-hole mounting. It provides 82 µF capacitance at a 160 V rating and is designed for applications requiring high ripple handling and long operational life.

Targeted use cases include power supply filtering and ballast circuits where sustained ripple currents and elevated-temperature endurance are required. The part is RoHS compliant and rated for continuous operation across a wide temperature range.

Key Features

• Capacitance & Voltage – 82 µF nominal capacitance with a 160 V rated voltage and ±20% tolerance.
• High Ripple Current – Rated ripple current is 637.5 mA at 120 Hz and 1.275 A at 100 kHz, enabling robust AC filtering and smoothing.
• Long Life at Elevated Temperature – Designed to withstand 10000 hours at +105°C (series endurance up to 10000 hours; some sizes specified at 8000 hours).
• Operating Temperature Range – Specified for –40°C to +105°C operation.
• Package & Mounting – Radial lead, can-style package with 5 mm lead spacing and compact dimensions (L: 20 mm × D: 12.5 mm as listed for this size).
• Leakage Current Specification – Series leakage current after 1 minute at 20°C follows the published limit: not more than 0.04CV + 100 µA (where C is µF and V is rated voltage).
• Tangent of Loss Angle (tan δ) – For the 160 V rating, tan δ is specified at a maximum of 0.20 (measured at 120 Hz, 20°C).
• Frequency Ripple Coefficients – Frequency coefficients for rated ripple are published for design scaling (50 Hz: 0.40, 120 Hz: 0.50, 1 kHz: 0.80, 10 kHz: 0.90, 100 kHz+: 1.00).
• Regulatory Compliance – Compliant with the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Power Supplies – Bulk smoothing and ripple suppression in switch-mode and linear power supplies where sustained ripple capability and high-voltage rating are needed.
• Ballast Circuits – Energy storage and ripple handling in lighting ballast designs, leveraging the part’s high ripple current rating and long life at elevated temperature.
• Industrial Power Electronics – Decoupling and filtering in industrial control and power stages that operate across –40°C to +105°C.
• General-Purpose Electronics – Through-hole assemblies requiring polarized capacitance in a compact radial-lead can package.

Unique Advantages

• High ripple tolerance: Specified ripple currents of 637.5 mA (120 Hz) and 1.275 A (100 kHz) support demanding AC-loading conditions without derating performance.
• Extended elevated-temperature life: Endurance rating of up to 10000 hours at +105°C provides predictable long-term behavior in heated environments.
• Compact, through-hole form factor: Small radial can with 5 mm lead spacing and compact dimensions simplifies replacement and integration into legacy or serviceable PCBs.
• Design scaling across frequency: Published frequency coefficients let designers scale ripple ratings across common operating frequencies for accurate thermal and reliability planning.
• Clear electrical limits: Defined tan δ and leakage current formulas make it straightforward to specify electrical performance and margins during design verification.
• RoHS compliant: Meets RoHS directive requirements for restricted substances, supporting regulatory consistency in assemblies.

Why Choose UCS2C820MHD?

UCS2C820MHD combines a compact radial-lead can with an 82 µF, 160 V rating and quantified ripple and endurance specifications, making it a practical choice when designers require reliable bulk capacitance in through-hole power designs. The published electrical and thermal limits allow straightforward integration into power supplies, ballast circuits, and industrial electronics while supporting high-temperature service.

This part is suitable for engineers specifying long-life electrolytic solutions where ripple current capability, clear leakage and tan δ limits, and RoHS compliance are important selection criteria. Its combination of measurable performance data and compact packaging supports dependable BOM choices for production and maintenance scenarios.

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