UHW1C121MDD

The UHW1C121MDD is a miniature, radial lead aluminum electrolytic capacitor offering 120 µF capacitance at a 16 V rating. Designed as part of Nichicon's UHW series, it provides low impedance at high frequency and is intended for general-purpose electronic applications that require compact size and robust ripple handling.

With a polarized radial-can package (φ5 × 11 mm) and an operating temperature range of −40 °C to 105 °C, this capacitor targets compact power filtering and decoupling roles where high ripple current capability and long endurance are needed.

Key Features

• Capacitance & Tolerance — 120 µF nominal capacitance with ±20% tolerance (measured at 120 Hz, 20 °C) for predictable bulk energy storage and decoupling.
• Rated Voltage — 16 V DC rating suitable for low-voltage power rails and compact power supplies.
• High Ripple Current Performance — Low-frequency ripple current of 180 mA (120 Hz) and high-frequency ripple current of 450 mA (10 kHz) to handle dynamic load currents; tangent of loss angle (tan δ) specified at 0.15 (20 °C, 120 Hz).
• Low Leakage — Leakage current specified at 19.2 µA, supporting stable performance when biased at rated voltage.
• Compact Radial Package — φ5 × 11 mm can with 2 mm lead spacing (±0.5 mm) in a radial-lead format for through-hole assembly and flexible placement in dense layouts.
• Temperature & Endurance — Rated for −40 °C to 105 °C with an endurance rating of 7000 hours at 105 °C for extended life in elevated temperature environments.
• RoHS Compliant — Meets RoHS requirements for environmental compatibility.

Typical Applications

• General-purpose power filtering — Bulk smoothing and decoupling on low-voltage rails where a compact, high-ripple radial electrolytic is required.
• Board-level decoupling — Local energy reservoir for microcontroller and peripheral circuits in compact electronic assemblies.
• Compact power supplies — Output filtering and ripple reduction in small DC–DC converters and regulator modules.

Unique Advantages

• Compact footprint: φ5 × 11 mm can and radial leads allow placement in space-constrained designs without sacrificing capacitance.
• High ripple capability: Specified ripple current values at both low and high frequencies enable stable operation across common switching and line-frequency environments.
• Wide temperature range: Performance from −40 °C to 105 °C supports use across a broad range of ambient conditions.
• Long endurance at elevated temperature: 7000 hours at 105 °C provides predictable life for sustained thermal stress applications.
• Low leakage and controlled dissipation: Low leakage current and a specified tan δ help maintain efficiency and thermal control in biased circuits.
• Through-hole robustness: Radial lead mounting simplifies prototyping, repair, and mechanical stability on PCBs.

Why Choose UHW1C121MDD?

The UHW1C121MDD combines a compact radial-can form factor with high ripple handling and long endurance, making it well suited for designers who need reliable bulk capacitance in tight spaces. Its specified electrical characteristics—120 µF at 16 V, low leakage, controlled tan δ, and ripple current ratings—make it a practical choice for general-purpose power filtering and decoupling tasks.

This part is appropriate for engineers and procurement teams specifying radial electrolytic capacitors for compact power supply circuits and board-level decoupling where predictable thermal and electrical performance over time is required.

If you would like pricing, lead-time details, or a formal quote for the UHW1C121MDD, please contact our sales team to request a quote or submit an inquiry.