UBT1H331MHD8

The UBT1H331MHD8 is a miniature, radial-lead aluminum electrolytic capacitor from Nichicon’s UBT high-reliability series. It provides 330 µF capacitance at a 50 V rating in a can-style radial package (φ12.5 × 20 mm) with 5 mm lead spacing.

Engineered for heavy-duty electronics, this part combines high ripple-current capability, low impedance, and long endurance at elevated temperature (–40 °C to +125 °C), making it suitable for demanding automotive and high-temperature applications where extended service life is required.

Key Features

• Capacitance & Tolerance: 330 µF nominal with a tolerance of −20% to +20% at 120 Hz, 20 °C, suitable for bulk energy storage and decoupling where defined capacitance range is required.
• Rated Voltage: 50 V DC rating for mid-voltage power applications.
• High-Temperature Operation: Specified operating range from −40 °C to +125 °C to support elevated-temperature environments.
• Long Endurance: Designed for up to 10,000 hours life at +125 °C (per UBT series endurance conditions for φ≥12.5 mm at ≤50 V), enabling extended field lifetimes.
• Ripple Current & Low Impedance: Low-frequency ripple current 891.1 mA at 120 Hz and high-frequency ripple current 1.33 A at 100 kHz, with impedance of 70 mΩ—useful where sustained ripple handling and low loss are important.
• Leakage & Loss Characteristics: Leakage current specified at 495 µA and tangent of loss angle (tan δ) of 0.1 at 20 °C, 120 Hz, for predictable dissipation behavior.
• Package & Mounting: Radial lead can package (φ12.5 × 20 mm) with 5 mm lead spacing and lead spacing tolerance ±0.5 mm; available in bulk/bag packing for production use.
• Reliability & Qualification: AEC-Q200 qualified and RoHS compliant; produced in mass-production status for consistent supply.

Typical Applications

• Automotive Electronics: Suited for automobile electronics where heavy-duty service is indispensable, offering high-temperature tolerance and AEC-Q200 qualification for vehicle systems.
• Power Supply Filtering and Energy Smoothing: Low impedance and specified ripple-current ratings support effective smoothing and filtering in DC power stages operating at elevated temperatures.
• Long-Life, High-Temperature Systems: 10,000-hour endurance at +125 °C (for the specified case size and voltage) makes this capacitor appropriate for assemblies requiring extended operational life in hot environments.

Unique Advantages

• High Operating Temperature: Rated to +125 °C, enabling placement closer to heat sources or in high-temperature enclosures.
• Extended Endurance: Endurance up to 10,000 hours at +125 °C for φ12.5 mm parts at ≤50 V, reducing maintenance and replacement frequency in long-life applications.
• AEC-Q200 Qualification: Explicit qualification for automotive-grade reliability, supporting use in vehicle electronics where that standard is required.
• Strong Ripple Performance with Low Impedance: 1.33 A at 100 kHz and 891.1 mA at 120 Hz combined with 70 mΩ impedance deliver stable performance under AC stress.
• Compact Radial Form Factor: φ12.5 × 20 mm can with 5 mm lead spacing provides a space-conscious radial-leaded solution for through-hole assemblies.
• Production-Ready and RoHS Compliant: Mass production availability and RoHS compliance simplify procurement and regulatory alignment.

Why Choose UBT1H331MHD8?

UBT1H331MHD8 positions itself as a high-reliability aluminum electrolytic option for designs that demand sustained performance at elevated temperatures. Its combination of 330 µF capacitance, 50 V rating, low impedance, and defined ripple-current capability makes it well suited to power conditioning roles in harsh environments.

This part is ideal for engineers and procurement teams specifying components for long-life, high-temperature electronics—particularly in automotive contexts where AEC-Q200 qualification and extended endurance are required. With RoHS compliance and mass-production availability, the UBT1H331MHD8 supports scalable manufacturing and reliable field operation.

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