UKL1H221KHD

The UKL1H221KHD is a radial-lead aluminum electrolytic capacitor from Nichicon's UKL series, featuring a 220 µF capacitance and a 50 V rated voltage. It is part of a low-leakage-current family designed for audio applications and general-purpose power filtering.

Compact and polarized, this unit delivers a 2000-hour endurance at 85 °C and RoHS compliance, making it suitable for designs that require stable capacitance, controlled leakage, and reliable ripple performance in audio circuitry.

Key Features

• Capacitance & Voltage — 220 µF rated capacitance at 50 V for energy storage and smoothing in DC circuits.
• Tolerance — ±10% tolerance (K) at 120 Hz, 20 °C for predictable performance in precision audio power stages.
• Low Leakage Current — UKL series low-leakage construction; leakage current specified as not more than 0.002CV (µA) after the applicable application time of rated voltage at 20 °C.
• Endurance — 2000 h life at 85 °C with recovery to specified characteristics after test, supporting stable long-term operation.
• Ripple Current Capability — Rated ripple currents of 490 mA at 120 Hz and 735 mA at 10 kHz, enabling effective AC ripple handling across common audio frequencies.
• Mechanical & Mounting — Radial lead, can package with φ12.5 × 20 mm dimensions and 5 mm lead spacing for through-hole board layouts.
• Operating Range — Specified for operation from −40 °C to +85 °C.
• Compliance — RoHS compliant.

Typical Applications

• Audio Electronics — Energy storage, smoothing and decoupling in audio power supplies and amplifier stages where low leakage and stable ripple performance matter.
• Power Filtering — Bulk filtering and decoupling in DC power rails for consumer and professional audio equipment operating within −40 °C to +85 °C.
• General-Purpose Electronics — Through-hole boards requiring a compact, polarized electrolytic capacitor with defined endurance and ripple specifications.

Unique Advantages

• Low-leakage construction: Leakage current limited by the UKL series specification (≤ 0.002CV µA after rated-voltage application), important for maintaining bias and reducing idle losses in audio circuits.
• Clear performance at operating temperature: Endurance rated at 2000 hours at 85 °C ensures the capacitor meets its specified characteristics after extended thermal stress.
• Defined ripple capability: Specified ripple currents at both 120 Hz and 10 kHz provide design certainty for filtering performance across low and higher frequency components.
• Compact radial can package: φ12.5 × 20 mm dimensions with 5 mm lead spacing support standard through-hole layouts and straightforward replacement or prototyping.
• RoHS compliant: Meets environmental regulations for restricted substances as indicated in the product data.

Why Choose UKL1H221KHD?

UKL1H221KHD combines the established low-leakage characteristics of Nichicon’s UKL series with a 220 µF / 50 V specification and defined ripple and endurance ratings. It is well suited to designers of audio equipment and general-purpose electronic assemblies who need a compact, polarized electrolytic capacitor with verifiable leakage, ripple, and life specifications.

This part is targeted at projects that require predictable electrical behavior over time and temperature, and where through-hole radial mounting is preferred for board-level robustness and serviceability.

If you would like pricing, lead-time, or a formal quote for UKL1H221KHD, please submit a request and our team will respond with availability and ordering options.