UKL1A331KPD

The UKL1A331KPD is a miniature aluminum electrolytic capacitor in Nichicon's UKL low-leakage series. It is a radial-lead, polarized capacitor specified at 330 µF and 10 V, supplied in a compact φ10 × 12.5 mm can.

Engineered for audio and compact electronic applications, this standard-type capacitor delivers low leakage, defined ripple handling at both low and high frequency, and a 2000 hour endurance rating at 85 °C for reliable performance in constrained layouts.

Key Features

• Capacitance & Voltage — 330 µF nominal capacitance with a rated voltage of 10 V and ±10% tolerance for predictable decoupling and energy storage.
• Low Leakage Characteristic — Specified leakage current of 6.6 µA (measurement condition: 20 °C, 120 Hz) consistent with the UKL low-leakage series.
• Ripple Current Capability — Low-frequency ripple current of 400 mA (120 Hz) and high-frequency ripple current of 600 mA (10 kHz) to support AC loading in compact power circuits.
• Endurance & Temperature Range — Rated for 2000 hours at 85 °C with an operating temperature range of −40 °C to +85 °C.
• Package & Mounting — Radial-lead, polarized can with case size φ10 × 12.5 mm and 5 mm lead spacing (±0.5 mm tolerance) for through-hole PCB layouts.
• Loss Tangent (tan δ) — tan δ = 0.15 (measured at 20 °C, 120 Hz) for predictable ESR-related behavior in filtering applications.
• Environmental Compliance — RoHS compliant.
• Packaging Options — Available in bulk (no terminal forming) or bag packing to suit assembly handling preferences.

Typical Applications

• Audio — Suited for audio applications requiring a 330 µF, 10 V polarized capacitor in a compact radial-lead package.
• Audio — Appropriate where low leakage (6.6 µA) and a small φ10 × 12.5 mm footprint are required for space-constrained audio circuitry.
• Audio — Useful in audio designs that demand defined ripple handling (400 mA @120 Hz; 600 mA @10 kHz) and 2000 hour endurance at 85 °C.

Unique Advantages

• Compact radial can — φ10 × 12.5 mm package with 5 mm lead spacing enables dense PCB layouts without sacrificing capacitance.
• Low standby leakage — Measured leakage current of 6.6 µA helps minimize quiescent losses in sensitive circuits.
• Defined ripple performance — Specified ripple ratings at both low and high frequencies support mixed-frequency audio and power environments.
• Clear endurance rating — 2000 hours at 85 °C provides an explicit reliability target for thermal-stressed designs.
• Predictable dissipation — tan δ of 0.15 (20 °C, 120 Hz) gives designers a quantifiable parameter for ESR-related behavior.
• RoHS compliant — Meets RoHS requirements for environmentally regulated designs.

Why Choose UKL1A331KPD?

The UKL1A331KPD positions itself as a compact, low-leakage aluminum electrolytic solution for audio-focused and space-constrained electronic designs. With a 330 µF capacitance at 10 V, defined ripple current capacity across frequencies, and a 2000 hour endurance at 85 °C, it provides measurable specifications designers can use to balance size, performance, and thermal requirements.

This radial-lead, polarized can is well-suited to board-level implementations that require a small footprint, reliable low-frequency and high-frequency ripple handling, and RoHS compliance. It is a practical option for engineers specifying capacitors where clear electrical and environmental parameters are required.

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