UHW1K821MHD

The UHW1K821MHD is a miniature, high-reliability aluminum electrolytic capacitor in a radial lead can, rated 820 µF at 80 V. It is engineered for applications that require compact size, extended endurance, and high ripple-current capability.

Key design attributes include low impedance at higher frequencies, a wide operating temperature range of −40°C to 105°C, and a rated lifetime of 12,000 hours at 105°C, making the part suitable for general-purpose power conditioning in demanding applications.

Key Features

• Capacitance and Voltage — 820 µF nominal capacitance with ±20% tolerance and an 80 V rated voltage for medium-voltage power rails.
• High ripple-current capability — Supports 1.584 A at 120 Hz (low frequency) and 2.64 A at 10 kHz (high frequency), enabling effective smoothing under AC ripple and switching conditions.
• Low impedance — Specified impedance of 95 mΩ for improved filtering performance at operating frequencies.
• Loss characteristics — Tangent of loss angle (tan δ) specified at 0.09 (measured at 20°C, 120 Hz for the 80 V rating), aiding thermal and ESR considerations in design.
• Leakage current — Leakage current listed as 656 µA, useful for calculating standby and bias currents in power designs.
• Reliability and endurance — Rated life of 12,000 hours at 105°C with defined limits for capacitance change, tan δ, and leakage current after endurance testing.
• Mechanical and packaging — Compact φ16 × 30.5 mm can with 7.5 mm lead spacing (±0.5 mm). Available in bulk (no terminal forming) or bag packing; radial lead mounting.
• Operating environment — Wide operating temperature range from −40°C to 105°C and RoHS-compliant construction.

Typical Applications

• Power supply smoothing — Bulk filtering and smoothing on intermediate or output rails where 80 V rating and high ripple-current handling are required.
• DC–DC converter output filtering — Decoupling and energy storage for converters that demand low impedance and stable performance across temperature.
• Industrial control power rails — Local energy storage and ripple suppression in control electronics operating in −40°C to 105°C environments.
• Power modules and power conditioning — Use where compact footprint, high ripple capability, and long endurance are needed for continuous duty applications.

Unique Advantages

• High ripple-current rating: Provides 1.584 A at 120 Hz and 2.64 A at 10 kHz, reducing heating and improving reliability under AC ripple and switching loads.
• Low impedance: 95 mΩ impedance helps improve transient response and decreases voltage ripple on power rails.
• Extended endurance: 12,000 hours at 105°C supports long-term operation in elevated-temperature environments.
• Compact radial can: φ16 × 30.5 mm size with 7.5 mm lead spacing delivers high capacitance in a small footprint for space-constrained designs.
• Predictable electrical behavior: Specified tan δ (0.09 at 20°C/120 Hz for 80 V) and defined leakage current (656 µA) make thermal and bias budgeting straightforward.
• Regulatory compliance: RoHS-compliant construction for environmental conformity in regulated markets.

Why Choose UHW1K821MHD?

The UHW1K821MHD combines high capacitance and an 80 V rating with low impedance and substantial ripple-current capability, packaged in a compact radial-can form. Its 12,000-hour endurance at 105°C and −40°C to 105°C operating range make it a practical choice for designers needing robust, long-lived energy storage and filtering in general-purpose power electronics.

This part suits engineers and procurement teams building power supplies, converter outputs, and power-conditioning modules where predictable electrical performance, compact size, and RoHS compliance are important. Mass-production availability and standard packaging options simplify integration into production BOMs.

Request a quote or contact sales with the part number UHW1K821MHD to get pricing, availability, and lead-time information.