Jun 11, 2017 #1 E eric_s88 Newbie level 4 Joined Nov 19, 2013 Messages 7 Helped 1 Reputation 2 Reaction score 1 Trophy points 3 Activity points 56 Hi everybody , happy to be here again after an almost long time :wink::wink: I need your help in recognizing a component in this picture the device with Q3 code, it seems it has 2 transistor in its package .. what is that ? could you mention a part number for that ?? by the way...this is a part of a gps board (mp8 ublox) and this circuit is its filter of Antenna ..
Hi everybody , happy to be here again after an almost long time :wink::wink: I need your help in recognizing a component in this picture the device with Q3 code, it seems it has 2 transistor in its package .. what is that ? could you mention a part number for that ?? by the way...this is a part of a gps board (mp8 ublox) and this circuit is its filter of Antenna ..
Jun 11, 2017 #2 barry Advanced Member level 7 Joined Mar 31, 2005 Messages 6,333 Helped 1,194 Reputation 2,400 Reaction score 1,389 Trophy points 1,393 Location California, USA Activity points 34,481 It's a dual transistor
Jun 19, 2017 #3 B biff44 Advanced Member level 6 Joined Dec 24, 2004 Messages 5,047 Helped 1,376 Reputation 2,748 Reaction score 1,056 Trophy points 1,393 Location New England, USA Activity points 37,907 they used to package two transistors in the same box, so that you would have very well matched elecrical characteristics, AND identical baseplate temperatures. You might need these in a widlar current mirror application, for instance.
they used to package two transistors in the same box, so that you would have very well matched elecrical characteristics, AND identical baseplate temperatures. You might need these in a widlar current mirror application, for instance.