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The BC548 is a part of a family of NPN and PNP epitaxial silicon transistors that originated with the metal-cased BC108 family of transistors.The BC548 is the modern plastic-packaged BC108; [6] the BC548 article at the Radiomuseum website [7] describes the BC548 as a successor to the BC238 and differing from the BC108 in only the shape of the package.
All types have a maximum collector current of 100 mA, except that the original Philips tentative data dated 4.4.1966 specified a maximum collector current of 100 mA peak (I CM) for the BC107/8/9, and Telefunken originally specified a maximum collector current of 50 mA for the BC109, but since at least 1973 all have revised collector currents of 100 mA average or 200 mA peak, except that the ...
BC Boeing NetJets: 737-7BC [note 10] BD AirTran Airways: 717-2BD [42] 737-7BD BF Funair Corp. 737-7BF [note 10] BG Flightlease AG → GATX Jet Partners: 737-8BG 767-3BG BH TBN Aircraft Corporation 737-7BH [note 10] BJ Atlas Air: 737-7BJ [note 10] BK CIT Leasing Corp. 737-7BK 737-8BK BL Midwest Airlines: 717-2BL BQ GECAS: 737-7BQ [note 10] 737 ...
The year 548 BC was a year of the pre-Julian Roman calendar. In the Roman Empire , it was known as year 206 Ab urbe condita . The denomination 548 BC for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
The mission of the 548 ISRG is to operate and maintain a $1B AN/GSQ-272 "Sentinel" weapon system (also known as Distributed Ground Station or DGS), and provide combatant commanders with processing, exploitation, and dissemination (PED) of actionable intelligence data collected by U-2, MQ-1, MQ-9 and RQ-4 aircraft and other platforms as required.
I have compared data sheets for both BC54x and 2N3904. They appear to be quite different devices. BC54x would apparently be a superior replacement for the 2N3904 where gain linearity will improve circuit performance. Obviously, BC548 would not substitute a 2N3904 if the circuit needs to switch more than 30v.
R-phrases (short for risk phrases) are defined in Annex III of European Union Directive 67/548/EEC: Nature of special risks attributed to dangerous substances and preparations. The list was consolidated and republished in Directive 2001/59/EC, [1] where translations into other EU languages may be found.
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