The SLA3R8L4060820 from Shanghai Yongming Electronic is a Supercapacitor with Capacitance 40000 mF, Voltage Rating 3.8 V, Equivalent Series Resistance 200 mOhms, Temperature Operating Range -40 to 85 Degree C. Tags: Through Hole. More details for SLA3R8L4060820 can be seen below.