Voltage V BE(sat) Base to Emitter Saturation Voltage θ jc Thermal Resistance Transition Frequency fT ton Turn on Time Storage Time ts Fall Time tf Copyright & Copy;2000 Shindengen Electric Mfg.Co.Ltd Conditions IC = 0.2A At rated Voltage At rated Voltage VCE = 5V, IC = 7.5A VCE = 5V, IC = 1mA IC = .