The AOK20B120D1 from Alpha & Omega Semiconductor is a IGBT with Gate Emitter Voltage -30 to 30 V, Saturated Collector Emitter Voltage 1.54 to 1.97 V, DC Collector Current 20 to 40 A, Peak Collector Current 80 A, DC Forward Current 20 to 40 A. More details for AOK20B120D1 can be seen below.