UKL2A4R7KDD

The UKL2A4R7KDD is a low-leakage aluminum electrolytic capacitor in a compact radial-can package (φ5 × 11 mm). It delivers 4.7 µF capacitance at a 100 V rated voltage, optimized for audio applications that require low leakage and reliable ripple handling in a small footprint.

Designed for through-hole radial mounting, this component combines a high-voltage rating, defined ripple current performance at low and high frequencies, and a 2000-hour endurance at 85°C for stable operation in constrained power and signal environments.

Key Features

• Capacitance & Tolerance — 4.7 µF nominal capacitance with ±10% tolerance, providing predictable charge storage for precision filtering and coupling in audio circuits.
• 100 V Rated Voltage — High working voltage for circuits requiring substantial DC blocking or elevated supply rails.
• Low Leakage Current — Specified leakage current of 0.94 µA, reducing bias loss and supporting long-term signal integrity.
• Ripple Current Performance — 50 mA at 120 Hz (low-frequency) and 100 mA at 10 kHz (high-frequency) for effective decoupling across audio-relevant frequency ranges.
• Endurance & Temperature Range — Rated lifetime of 2000 hours at 85°C with an operating temperature range of −40°C to 85°C for sustained performance under elevated ambient temperatures.
• Package & Mounting — Radial lead, polarized aluminum can construction, size φ5 × 11 mm with 2 mm lead spacing (±0.5 mm), suited to through-hole board layouts.
• Environmental Compliance — RoHS compliant to support regulated product designs.

Typical Applications

• Audio Amplifiers — Use for supply decoupling and coupling in amplifier stages where low leakage and a 100 V rating help preserve signal fidelity and DC biasing.
• Audio Power Supplies — Effective for smoothing and ripple suppression on audio supply rails, leveraging specified ripple current ratings at both low and high frequencies.
• Signal Path Elements — Compact radial package suitable for space-constrained boards that require stable capacitance and low leakage in audio signal chains.

Unique Advantages

• Low Standby Current: 0.94 µA leakage supports lower bias drift and improved idle-state performance in audio circuitry.
• Wide Voltage Margin: 100 V rating enables use in higher-voltage audio stages or systems with elevated supply rails.
• Frequency-Range Ripple Handling: Defined ripple current specs at 120 Hz and 10 kHz provide predictable performance for both power-supply smoothing and high-frequency decoupling.
• Compact Through-Hole Form Factor: φ5 × 11 mm radial can and 2 mm lead spacing reduce PCB area while retaining through-hole robustness.
• Thermal Endurance: 2000 hours at 85°C offers reliable service life in moderately elevated-temperature environments.
• Regulatory Compliance: RoHS conformity aligns with environmental requirements for many electronic products.

Why Choose UKL2A4R7KDD?

UKL2A4R7KDD is positioned for designers seeking a compact, high-voltage electrolytic solution with demonstrable low leakage and defined ripple performance—attributes that matter for audio-focused power and signal conditioning. Its radial-can form and modest footprint make it a practical choice for through-hole assemblies requiring reliable capacitance and DC retention.

This part is suited to engineers building audio amplifiers, power supply filters, and signal-path circuits that benefit from low leakage, a 100 V rating, and specified endurance. The combination of small size, clear electrical specs, and RoHS compliance supports predictable integration and lifecycle planning.

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