UKA1H331MPD

The UKA1H331MPD is a radial lead aluminum electrolytic capacitor from Nichicon’s UKA series, designed for high-grade audio equipment. It delivers 330 µF capacitance at a 50 V rating in a compact φ10 × 16 mm can with 5 mm lead spacing.

Engineered for demanding audio applications, this polarized capacitor combines a wide operating temperature range (−55°C to 105°C), defined endurance (2000 hours at 105°C), and measurable ripple-current and leakage specifications to support reliable power filtering, coupling, and decoupling in audio circuits.

Key Features

• Capacitance & Tolerance — 330 µF nominal with a tolerance of −20% to +20% at 120 Hz, 20°C, providing predictable energy storage for audio rails and smoothing.
• Voltage Rating — Rated at 50 V, suitable for mid-voltage audio power supplies and signal-chain applications requiring polarized bulk capacitance.
• Low Loss (tan δ) — tanδ of 0.14 measured at 20°C and 120 Hz, helping minimize dissipative losses in audio circuits.
• Ripple Current Capability — Low-frequency ripple: 410 mA at 120 Hz; high-frequency ripple: 615 mA at 10 kHz, supporting dynamic load conditions in amplifiers and power supplies.
• Leakage Current — Specified leakage current of 495 µA, enabling predictable bias behavior after voltage application.
• Wide Temperature & Endurance — Operating from −55°C to 105°C with an endurance rating of 2000 hours at 105°C for long-term stability under elevated temperatures.
• Package & Mounting — Radial lead can, size φ10 × 16 mm, lead spacing 5 mm (±0.5 mm), available in bulk (no terminal forming) or bag packing; suitable for through-hole assembly.
• Quality Qualification — AEC-Q200 listed in product specifications for applications requiring enhanced component stress qualification.

Typical Applications

• High‑Grade Audio Equipment — Bulk storage and smoothing in audio amplifiers, preamplifiers, and high-fidelity components where stable capacitance and low loss are important.
• Power Supply Filtering — DC rail smoothing and ripple reduction in power supplies serving audio and signal-processing stages.
• Coupling and Decoupling — Signal chain coupling and local decoupling in analog audio circuits to maintain signal integrity and reduce noise.

Unique Advantages

• Defined Performance at Audio Frequencies — tanδ measured at 120 Hz and ripple current specified at 120 Hz and 10 kHz provide concrete metrics for audio-design verification.
• Compact Through‑Hole Form Factor — φ10 × 16 mm radial can with 5 mm lead spacing offers significant capacitance in a small footprint for space-constrained audio PCBs.
• Robust Thermal Endurance — 2000 hours at 105°C endurance supports sustained performance in elevated-temperature environments commonly found near power stages.
• High Ripple Handling — Rated ripple currents (410 mA @ 120 Hz, 615 mA @ 10 kHz) help manage dynamic current loads in amplifier power rails.
• Predictable Leakage Behavior — Specified leakage current enables designers to budget bias currents and leakage in low-level signal paths.
• AEC‑Q200 Qualification — Stress qualification listed in specifications for customers requiring enhanced reliability validation.

Why Choose UKA1H331MPD?

The UKA1H331MPD is positioned for engineers designing high-grade audio electronics who need a compact, through-hole aluminum electrolytic capacitor with quantifiable loss, ripple, and leakage characteristics. Its combination of a 50 V rating, 330 µF capacitance, wide temperature range, and 2000-hour endurance at 105°C delivers predictable performance for power filtering, decoupling, and coupling tasks in audio systems.

Manufactured by Nichicon and offered in bulk or bag packing for production use, this part provides a balance of size, electrical performance, and qualification attributes to support robust, long-term designs.

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