299 PHL-4TSI Aluminum Electrolytic Capacitors Vishay / BC Components 299 PHL-4TSI Aluminum Electrolytic Capacitors (AECs) provide a long useful life of 5000 hours in a category temperature range of -40°C to +105°C. These polarized AECs feature a non-solid electrolyte and a cylindrical aluminum case that is insulated with a blue sleeve and has pressure relief on the side of the case. The 299 PHL-4TSI series is available in sizes ranging from 35mm x 50mm up to 45mm x 100mm (D x L). Additional features include stable mounting and keyed polarity, high ripple current capability, 270μF to 3300μF rated capacitance range, and ±20% tolerance. Vishay / BC Components 299 PHL-4TSI Aluminum Electrolytic Capacitors are ideal for switched-mode power supplies, renewable energy power converters, and energy storage in pulse systems.