![]() These values are very important for a bipolar and are one of the first criteria for its selection. Group “C”, according to the hFE U classification, starts at 420 and ends at 800. ![]() The BC547 transistor has a fairly large current Gain (h FE). Generally, testing is performed at ambient temperatures of no more than 25 degrees Celsius. In these spec, a separate column (test condition) indicates the values at which the device was tested by the manufacturer. These are listed by the device manufacturer immediately after the description of the limit values. Now let’s take a look at the electrical parameters of the bc547. The following is a complete list of bc547 operating limits, taken from Fairchild Semiconductor’s datasheet. ![]() The addition “max”, in the designation of permissible parameters, indicates their maximum values, but sometimes it is omitted in the description. This value is quite consistent with and interrelated to I C(max) and is 500 mW or half a watt for the entire group.
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