ULD1A101MDD

The ULD1A101MDD is a miniature, radial-lead aluminum electrolytic capacitor in a can-style package designed for long-life applications. It delivers 100 µF capacitance at a 10 V rating with polarized operation and compact dimensions for space-constrained power circuits.

Engineered for general-purpose power applications and specifically noted for use in LED lighting power supplies, this part offers a long operational life at elevated temperature and compliance with RoHS requirements.

Key Features

• Capacitance & Voltage: 100 µF nominal capacitance at a 10 V rated voltage for energy storage and decoupling in low-voltage power rails.
• Long Life: Endurance specified for 10000 hours at +105°C when subjected to DC bias plus rated ripple current; capacitors are restored to 20°C for post-test verification.
• Temperature Range: Operating temperature range of −40°C to +105°C suitable for a wide range of ambient conditions.
• Ripple Current Ratings: 91 mA at 120 Hz and 130 mA at 100 kHz to support AC ripple handling in power-supply applications.
• Polarized Radial Lead Package: Radial, can-style construction with 2 mm lead spacing and compact footprint (L: 1.1 × D: 0.5 cm) for through-hole PCB mounting.
• Electrical Loss and Low-Temperature Stability: tan δ ≤ 0.45 (measured at 120 Hz, 20°C for 10 V rating); impedance ratio Z(−25°C)/Z(+20°C) ≤ 8 for consistent performance at low temperatures.
• Leakage Current: For rated voltages 10–100 V, leakage current after 2 minutes at 20°C is ≤ 0.01 CV (µA), providing predictable standby behavior.
• Environmental Compliance: RoHS compliant (2011/65/EU, (EU)2015/863).

Typical Applications

• LED Lighting Power Supplies: Energy storage and smoothing in LED driver circuits where long life and high-temperature endurance are required.
• General Purpose Power Filtering: Decoupling and bulk capacitance for low-voltage DC rails in consumer and industrial electronics.
• Embedded and PCB Power Modules: Through-hole radial mounting for PCB power supplies and modules that benefit from a compact can-style capacitor.

Unique Advantages

• Long operational life: 10000-hour endurance at +105°C reduces maintenance and replacement frequency in continuously powered systems.
• Compact form factor: Small can-style radial package (L: 1.1 × D: 0.5 cm) saves PCB space in constrained designs.
• Predictable leakage behavior: Specified leakage current (≤ 0.01 CV after 2 minutes at 20°C for 10–100 V) aids margining in power-budget calculations.
• Wide operating temperature span: −40°C to +105°C supports deployment across varied environmental conditions.
• Clear ripple specifications: Provided ripple current values at 120 Hz and 100 kHz help designers size capacitors for ripple and thermal requirements.
• RoHS compliance: Meets RoHS directive requirements for restricted substances in electronic assemblies.

Why Choose ULD1A101MDD?

ULD1A101MDD combines a compact radial-can footprint with long-life endurance and defined electrical characteristics, making it a practical choice for designers of LED drivers, power supplies, and general-purpose low-voltage electronics. Its specified ripple current, leakage current behavior, and wide operating temperature range provide predictable performance across demanding operating conditions.

This part suits engineers seeking a space-efficient, RoHS-compliant aluminum electrolytic capacitor with verified endurance at elevated temperature and clear electrical specifications to support reliable, long-running power designs.

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