The BT series of Aluminum Electrolytic Capacitors are designed to operate at high temperatures up to +125°C, making them well-suited for demanding applications such as automobile electronics. This series is noted for its highly dependable reliability, enduring a load life of 5,000 hours at +125°C.
Specifications and Performance
The capacitors in this series offer a wide range of specifications, with the following key features:
- Capacity Range: 1 to 4700 microfarads (uF)
- Rated Voltage Range: 10 to 450 volts (V)
- Category Temperature Range: Stably operable up to +125°C
- Capacitance Tolerance: ±20% at 120Hz and 20°C
Leakage Current and Dissipation Factors
Leakage current specifications vary depending on the capacitor’s rated voltage with details indicating maximum permissible values after a minute’s application of rated voltage. Similarly, dissipation factors are specified for different rated voltages and reflect the minimal effect of operating temperature across a range of frequencies from 20Hz to 120Hz.
Endurance and Stability at Low Temperature
The BT series capacitors showcase excellent endurance and stability under extensive tests:
- Endurance: Capacitors left under no load at 25°C for 1,000 hours still meet the predefined endurance characteristics.
- Stability: While bearing a D.C. bias voltage plus the rated ripple current, the capacitors’ capacitance change is well within acceptable limits after continuous operation – with specific durations varying based on rated voltage and case size.
Physical Aspects and Markings
Nichicon’s aluminum electrolytic capacitors feature a radial lead type construction. They are marked with a white color letter on a blue sleeve, which includes pertinent information such as the capacitance tolerance, rated capacitance, rated voltage, and series name. Lead and case sizes are clearly mentioned to enable proper selection based on application requirements.
Additional Information:
More detailed specifications regarding formed or taped products are addressed on other pages of the datasheet (see pages 18 to 20), while minimum order quantities and dimensional tables can be found starting on page 3.
High Reliability and Suitability
With a focus on reliable performance under high temperatures, Nichicon’s BT series capacitors are engineered to meet the rigorous demands of the automotive industry. The detailed specifications ensure that engineers and designers can select the appropriate components for their needs.
References:
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