Overview of BT series Aluminum Electrolytic Capacitors
The ALUMINUM ELECTROLYTIC CAPACITORS BT series datasheet presents robust capacitors designed for high-temperature applications, especially targeting automotive electronics requiring heavy-duty service. These capacitors boast a high reliability, enduring a load life of 5,000 hours at +125°C, ensuring dependable performance in demanding conditions.
Key Specifications
The datasheet details several key specifications, including capacitors’ operational parameters:
– Temperature Range: +125°C
– Voltage Range: 10V to 450V
– Capacitance Range: 1μF to 4700μF
– Capacitance Tolerance: ±20% at 120Hz; 20°C
Performance Characteristics
Leakage current: Defined by formulas for different capacitance values, with special adjustments for capacities over 1000μF. Depending on the rated voltage, different maximum dissipation factors (tan) at various measurement frequencies and temperatures are provided.
Stability at Low Temperature: Impedance ratio (Z-25°C/Z+20°C and Z-40°C/Z+20°C) ensures stable low-temperature performance for different rated voltages.
Endurance: Capacitors can withstand various tests such as bias voltage applications along with rated ripple current for durations up to 10,000 hours, with limited changes in capacitance and permissible dissipation factor increases. Post endurance testing at no load for 1000 hours at 25°C, capacitors retain their characteristic requirements.
Shelf Life: Even after extended periods without load, capacitors maintain their performance characteristics.
Physical Features
The capacitors come with pressure relief end seals and are encapsulated in a blue sleeve with white lettering for identification. The series includes radial lead types and a detailed type numbering system for product identification. The case diameters range from 6.3mm to 18mm with height options depending on the capacitance and voltage ratings.
Rated ripple current, impedance, frequency coefficient of ripple current, and other performance values are detailed for a comprehensive set of case sizes, allowing users to select capacitors based on precise requirements. For detailed specifications on formed or taped product configurations, the datasheet redirects to pages 18 through 20, conveying its commitment to providing tailored solutions for a range of applications.
Conclusion
The BT series Aluminum Electrolytic Capacitors datasheet is a testament to Nichicon’s dedication to high-reliability electronic components designed to meet stringent automotive and high-temperature application requirements.
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