BT Series High Temperature (PET Sleeve). Nichicon BT Series Aluminium Electrolytic Capacitors are high reliability, low impedance and a miniature size that offer a 10000-hour load life. The BT series features a high temperature range, a wide rated voltage range, and high ripple current. Suitable for automobile electronics where heavy-duty services are indispensable. Features ; Benefits:. High reliability High ripple current Long life up to 10,000 hours