Wurth Elektronik SMD Aluminium Polymer Capacitor - WCAP-PSLP series. Aluminium Polymer capacitors contain solid conductive polymer instead of wet electrolytic,thus the benefits are: High permissible ripple current due to lower ESR at high frequency range Higher long term stability and expected life No dry out phenomenon due to solid conductive polymer. WCAP-PSLP are low profile SMD polymer electrolytic capacitors Series Load life of 2000h @ +105°C Operating temperature: -55°C to +105°C Reflow soldering is recommended