How to Read Transistor Data. The 2N3904 has an Hfe minimum of 100. As an example of its usage, consider the collector current formula Icollector = Hfe_ Ibase. If the base current Ibase is 2 mA, then the formula states that there is a minimum of 100_ 2 mA = 200 mA ( milliamps) at the collector. Hfe may be also referred to as Beta ( dc).
bu5027 transistor datasheet 2n3904
2N3904 Specifications: Transistor Polarity: NPN ; Collector Emitter Voltage V( br) ceo: 40V ; Transition Frequency Typ ft: 300MHz ; DC Collector Current: 200mA ; Power Dissipation Pd: 625mW ; DC Current Gain hFE: NPN silicon planar switching transistors. 2N3904- AP Bipolar ( BJT) Transistor NPN 40V 200mA 250MHz 600mW Through Hole TO- 92.