8/29/2023 0 Comments A transistor definitionTherefore, the following shows how to measure VBE, from which we can determine the junction temperature Tj. Tj is the only value that cannot be directly derived. In this case, Pc, Ta, △Tx, and Px can be directly derived from measurement results. Package power permissible loss is when voltage is supplied to a transistor and the device begins to generate heat due to power loss due to current flow, particularly when the junction temperature Tj reaches the absolute maximum value (150✬).Ĭalculation Method (Where △Tx is the amount of temperature rise when power Px is supplied) V CE(sat) and V BE(ON) should not change much.Low voltage resistance (around 7-8V, about the same as VEBO) The voltage may even be lower (below 5V) in some standard transistors (Please consider that excessively low voltage resistance may result in breakdown and degradation of characteristics).10% of the value of the forward direction) In this case current will flow from E to C.ģ.The following are characteristics of transistors connected in reverse. Therefore, C and E can be used as a transistor, even when connected in reverse. Also, please consider problems that may arise from usage as transistors (such as smaller current gain).ġ.It has been determined that no problems, such as degradation or destruction, will arise from use.Ģ.In the case of an NPN transistor, B is symmetrical with C, and E with N. In an NPN transistor, the Base is at a positive bias, the Collector at a negative bias, and reverse current flows from the Emitter to the Collector.
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