156 PUM-SI Aluminium Electrolytic Capacitor Vishay / BC Components 156 PUM-SI Aluminium Electrolytic Capacitor is an ultra-miniature snap-in capacitor with 5000 hours long life at 85°C. This capacitor features ±20% tolerance on CR, high ripple current capability, low ESR, and 1000μF to 22,000μF rated capacitance range. The 156 PUM-SI capacitor operates within a -40°C to 85°C temperature range. This capacitor is used in audio/video systems, smoothing, filtering, switched mode power supplies, and energy storage in pulse systems.