UCD1H331MNL6GS

The UCD1H331MNL6GS is a chip-type, low-impedance aluminum electrolytic capacitor engineered for surface-mount use on high-density PC boards. It delivers 330 µF at a 50 V rating in a compact radial can SMD package, optimized for automated placement with carrier-tape compatibility.

Targeted for automotive electronics, this AEC-Q200-qualified, RoHS-compliant device provides bulk energy storage and ripple handling across a wide operating range from -55 °C to +105 °C, with endurance specified to 5000 h at 105 °C.

Key Features

• Capacitance & Voltage — 330 µF nominal capacitance with a 50 V rated voltage and ±20% tolerance, suitable for moderate-voltage power rails.
• Low Impedance — Specified impedance of 140 mΩ, providing reduced voltage ripple and improved dynamic response on supply rails.
• High Temperature Operation & Endurance — Designed for operation from -55 °C to +105 °C with a lifetime rating of 5000 hours at 105 °C.
• Ripple Current Capability — Rated ripple current of 400 mA at 120 Hz and 800 mA at 10 kHz to support AC and switching workloads.
• Surface-Mount, Automated Assembly — Chip-type radial can SMD package sized L: 1.35 × D: 1.00 cm and a recommended land size of 1.03 × 1.03 cm; compatible with carrier-tape feed for automatic mounting.
• Automotive Qualification & Compliance — AEC-Q200 qualified and RoHS compliant (2011/65/EU, (EU)2015/863), meeting industry environmental and reliability standards for automotive electronics.
• Leakage Current Spec — After 2 minutes' application of rated voltage at 20 °C, leakage current is ≤ 0.01 CV or 3 µA, whichever is greater.
• Polarized Design — Polar aluminum electrolytic construction for use where polarized bulk capacitance is required.

Typical Applications

• Automotive power electronics — Bulk and decoupling capacitance for 50 V rails in in-vehicle power modules and power distribution systems operating up to 105 °C.
• Engine control units (ECUs) and powertrain modules — Energy buffering and ripple suppression where AEC-Q200 qualification and high-temperature endurance are required.
• Infotainment and body electronics — Stabilizing supply rails for audio amplifiers, displays, and control modules exposed to wide temperature ranges.
• Sensors and actuator drivers — Local energy storage and noise suppression for sensor interfaces and actuator drive circuits in automotive environments.

Unique Advantages

• Automotive-ready qualification: AEC-Q200 qualification provides documented suitability for automotive electronic designs.
• High-temperature endurance: Rated for 5000 hours at 105 °C, enabling reliable operation in thermally demanding environments.
• Low impedance with strong ripple capability: 140 mΩ impedance combined with 400 mA (120 Hz) and 800 mA (10 kHz) ripple ratings improves power-rail stability under switching loads.
• Compact SMD form factor for dense boards: Chip-type radial can SMD with carrier-tape compatibility supports automated assembly on high-density PCBs.
• Regulatory and environmental compliance: RoHS compliant to current directives, simplifying environmental compliance for assemblies.
• Controlled leakage performance: Leakage current limited to 0.01 CV or 3 µA after 2 minutes at 20 °C, helping maintain predictable standby behavior.

Why Choose UCD1H331MNL6GS?

The UCD1H331MNL6GS combines a high-capacitance 330 µF cell with a 50 V rating, low impedance, and automotive-grade qualification to deliver dependable bulk energy storage and ripple suppression in compact SMD form. Its endurance at elevated temperature, defined leakage limits, and ripple current ratings make it suitable for automotive power electronics and other applications that demand robust performance across wide temperature ranges.

This part is well suited to engineers specifying capacitors for designs that require a balance of capacitance density, thermal endurance, and assembly-friendly packaging, offering long-term reliability and compliance with automotive and environmental standards.

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