UKL1H3R3MDD

The UKL1H3R3MDD is a low‑leakage aluminum electrolytic capacitor from Nichicon’s UKL series, configured as a radial‑lead can. It delivers 3.3 µF of capacitance at a 50 V rating with a compact φ5 × 11 mm package and 2 mm lead spacing.

Designed for applications that require low DC leakage, controlled loss (tan δ), and defined ripple handling, this part offers a 2000‑hour endurance at 85°C and an operating temperature range of −40°C to 85°C. Status: End Of Life — products in this series are scheduled for discontinuation and are not recommended for new designs.

Key Features

• Low Leakage Current — Rated leakage current of 0.33 µA, suitable for DC bias‑sensitive circuits and long‑term hold applications.
• Capacitance & Voltage — 3.3 µF nominal capacitance with tolerance −20% to +20% at a 50 V rated voltage.
• Low Loss (tan δ) — tanδ of 0.08 measured at 20°C, 120 Hz, providing predictable dissipation characteristics.
• Ripple Current Performance — Low‑frequency ripple current of 40 mA at 120 Hz and high‑frequency ripple current of 80 mA at 10 kHz for moderate ripple handling.
• Compact Radial Package — φ5 × 11 mm can with 2 mm lead spacing (±0.5 mm) in a radial lead format for through‑hole assemblies; available in bulk or bag packing.
• Reliability & Temperature Range — 2000 hours endurance at 85°C and an operating range of −40°C to 85°C, with RoHS compliance.
• Polarized — Designed as a polarized electrolytic capacitor for correct orientation in DC circuits.

Typical Applications

• Audio — Suited for audio circuitry where low leakage and compact radial packaging are required for coupling, decoupling, and bias stabilization.

Unique Advantages

• Reduced DC Drift: Low leakage current (0.33 µA) minimizes DC bias loss and helps maintain circuit operating points over time.
• Compact Footprint: φ5 × 11 mm radial can with 2 mm lead spacing enables space‑efficient through‑hole designs and easy assembly.
• Predictable Loss Characteristics: Measured tanδ of 0.08 at 20°C/120 Hz gives designers a clear basis for dissipation and damping calculations.
• Defined Ripple Capability: Specified ripple currents (40 mA @120 Hz, 80 mA @10 kHz) support moderate filtering and decoupling duties across frequency bands.
• Proven Endurance: 2000 hours at 85°C provides a quantified reliability metric for thermal stress planning.
• Regulatory Compliance: RoHS compliant to support regulatory needs in a range of industrial and consumer applications.

Why Choose UKL1H3R3MDD?

The UKL1H3R3MDD combines low leakage, defined loss characteristics, and a compact radial package to serve designs that require stable DC performance and modest ripple handling in through‑hole form factors. With a clear endurance specification (2000 h at 85°C) and RoHS compliance, it provides verifiable reliability metrics for maintenance and replacement planning.

This part is suitable for engineers maintaining or repairing existing audio and DC‑biased circuits that need a small, low‑leakage aluminum electrolytic capacitor. Note that this product is End Of Life; availability should be confirmed before specifying it into production designs.

Request a quote or submit an inquiry to check current availability, lead times, and pricing for UKL1H3R3MDD.