UKL2A331KHD

The UKL2A331KHD is a radial-lead aluminum electrolytic capacitor from Nichicon's UKL series, designed for low leakage current performance. It delivers 330 µF capacitance at a 100 V rating in a compact φ16 × 30.5 mm can, suited to through-hole assemblies where high voltage handling and low leakage are required.

Key electrical characteristics include low leakage current (66 µA), rated ripple currents of 730 mA at 120 Hz and 1.095 A at 10 kHz, and a rated endurance of 2000 hours at 85°C. The part is RoHS compliant and offered in bulk/bag packing with radial leads and a 7.5 mm lead spacing.

Key Features

• Capacitance & Voltage: 330 µF nominal capacitance with ±10% tolerance and a 100 V rated voltage, providing substantial energy storage for high-voltage circuits.
• Low Leakage Current: Measured leakage current of 66 µA supports applications that require minimal standby loss and stable biasing over time.
• High Ripple Handling: Rated ripple currents of 730 mA at 120 Hz and 1.095 A at 10 kHz enable effective filtering and decoupling across low and high frequency ranges.
• Mechanical / Package: Radial lead, can-style package with dimensions φ16 × 30.5 mm and 7.5 mm lead spacing (±0.5 mm), suitable for standard through-hole PCB layouts.
• Temperature & Endurance: Operating range from −40°C to 85°C with a lifetime rating of 2000 hours at 85°C, supporting sustained operation in elevated-temperature environments.
• Regulatory Compliance & Packing: RoHS compliant and available in bulk (no terminal forming) or bag packing for flexible procurement and assembly handling.

Typical Applications

• Audio — Designed for audio applications where low leakage and reliable ripple handling are needed for power supply filtering and signal stability.

Unique Advantages

• Low leakage minimizes bias drift: The 66 µA leakage current reduces DC offset and preserves circuit performance in applications sensitive to leakage.
• High-voltage capability: 100 V rating allows use in higher-voltage power rails without resorting to stacked capacitors.
• Broad ripple-frequency performance: Rated ripple currents at both 120 Hz and 10 kHz support effective smoothing across low and high-frequency content.
• Robust thermal endurance: 2000 hours at 85°C provides predictable life characteristics for designs exposed to sustained elevated temperatures.
• Through-hole mechanical convenience: Radial lead and standard 7.5 mm spacing ease PCB layout and assembly for repairable or prototyped systems.
• RoHS compliance: Meets RoHS requirements for environmentally conscious designs.

Why Choose UKL2A331KHD?

UKL2A331KHD combines Nichicon's UKL series low-leakage design with a high-voltage 100 V rating and robust ripple capabilities, making it suitable for engineers specifying reliable energy storage and filtering in through-hole assemblies. Its combination of low leakage, defined ripple current ratings, and endurance at elevated temperature provides verifiable electrical behavior for system-level design decisions.

This part is appropriate for designs that demand stable capacitance and controlled leakage over time, particularly in audio-related power and signal circuits where those parameters directly affect performance and consistency.

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