Jun 18, 2012 #1 R radagast Junior Member level 1 Joined Jan 13, 2010 Messages 18 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,413 Hi I'm looking for a transistor with the following properties: vbe,on=0.7v, vce,sat=0.2, beta=100. Needn't be accurate, I just don't know how to find a transistor by these properties. I need a model name I can buy at the store... Thanks.
Hi I'm looking for a transistor with the following properties: vbe,on=0.7v, vce,sat=0.2, beta=100. Needn't be accurate, I just don't know how to find a transistor by these properties. I need a model name I can buy at the store... Thanks.
Jun 18, 2012 #2 erikl Super Moderator Staff member Joined Sep 9, 2008 Messages 8,108 Helped 2,695 Reputation 5,370 Reaction score 2,305 Trophy points 1,393 Location Germany Activity points 44,123 Practically any silicon BJT !
Jun 18, 2012 #3 R radagast Junior Member level 1 Joined Jan 13, 2010 Messages 18 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,413 I see... thanks.
Jun 18, 2012 #4 G godfreyl Advanced Member level 5 Joined Apr 18, 2012 Messages 1,974 Helped 632 Reputation 1,266 Reaction score 621 Trophy points 1,393 Activity points 12,772 BC547 and BC557 are popular small-signal transistors. BC547 is NPN, BC557 is PNP. They are graded according to beta: A: hFE = 110 to 220 @ 2mA B: hFE = 200 to 450 @ 2mA C: hFE = 420 to 800 @ 2mA e.g. BC547B is an NPN transistor with beta higher than 200.
BC547 and BC557 are popular small-signal transistors. BC547 is NPN, BC557 is PNP. They are graded according to beta: A: hFE = 110 to 220 @ 2mA B: hFE = 200 to 450 @ 2mA C: hFE = 420 to 800 @ 2mA e.g. BC547B is an NPN transistor with beta higher than 200.