UTHW6820MND

The UTHW6820MND is a miniature, high-voltage aluminum electrolytic capacitor from Nichicon’s UTH series designed for general-purpose electronic applications. It is a polarized, radial-leaded can-type capacitor specified for 420 V and 82 µF, offering long-life performance for demanding operating environments.

Key value comes from its combination of high working voltage, compact radial package, and extended endurance at elevated temperature, making it suitable where sustained high-voltage capacitance and reliability are required.

Key Features

• Electrical rating — 82 µF capacitance at a rated voltage of 420 V with ±20% tolerance, specified for polarized operation.
• High-voltage, compact package — Radial, can package with lead spacing of 7.5 mm and physical dimensions L: 2.6 × D: 1.6 cm for compact high-voltage designs.
• Operating temperature and endurance — Rated for −40 °C to +105 °C with an endurance specification of 5000 hours at 105 °C under D.C. bias plus rated ripple current.
• Ripple current capability — Rated ripple current of 620 mA at 120 Hz (low frequency) and 992 mA at 10 kHz (high frequency), with frequency coefficients available (120 Hz = 1.00, 10 kHz ≈ 1.60) for scaling ripple expectations.
• Leakage current specification — Leakage current limits defined by the manufacturer: after 1 minute ≤ 0.04CV + 100 µA and after 5 minutes ≤ 0.02CV + 25 µA (at 20 °C, rated voltage).
• Dielectric loss and low-temperature stability — Tangent of loss angle (tan δ) max 0.20 at 420 V (measurement at 120 Hz, 20 °C) and impedance stability at low temperature with Z(−25 °C)/Z(+20 °C) ≤ 8 (120 Hz).
• Shelf life — Designed to meet endurance characteristics after 1000 hours storage at 105 °C followed by specified voltage treatment, supporting reliable long-term storage and recovery.

Typical Applications

• High-voltage power supplies — Compact, high-voltage capacitance suited to smoothing and energy storage in circuits requiring a 420 V rating.
• Industrial electronics — Use in equipment where long life at elevated temperature (5000 h at 105 °C) and robust ripple handling are required.
• General-purpose high-voltage circuits — Radial lead form factor and compact can package for board-level integration in general-purpose designs.

Unique Advantages

• High-voltage capability: 420 V rating provides margin for high-voltage applications while maintaining a compact footprint.
• Long operational life: 5000 hours at 105 °C endurance supports durability in thermally demanding environments.
• Measured ripple performance: Published ripple current values at both 120 Hz and 10 kHz, plus frequency coefficients, allow predictable thermal and ripple sizing.
• Controlled leakage behavior: Manufacturer-specified leakage current limits and formulas enable accurate power-loss and standby calculations.
• Low-temperature stability: Defined impedance ratio at −25 °C (≤ 8 at 120 Hz) aids designs requiring performance across temperature extremes.
• Compact radial package: 2.6 × 1.6 cm can with 7.5 mm lead spacing simplifies board placement in space-constrained assemblies.

Why Choose UTHW6820MND?

UTHW6820MND targets designs that need a compact, high-voltage electrolytic capacitor with documented endurance and ripple performance. Its combination of 420 V rating, 82 µF capacitance, defined leakage limits, and 5000-hour life at 105 °C makes it suitable for engineers specifying reliable, long-lived components for general-purpose high-voltage circuitry.

This part benefits procurement and design teams looking for predictable electrical behavior and mechanical compatibility with radial-leaded, can-style mounting. The clear datasheet specifications for ripple, tan δ, low-temperature impedance, and shelf-life handling support accurate system-level design and long-term robustness.

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