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Class Information
Number: 257/579
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Bipolar transistor structure > With enlarged emitter area (e.g., power device) > With separate emitter areas connected in parallel
Description: Subject matter wherein there are a plurality of separate emitter areas which are electrically connected in parallel.

Sub-classes under this class:

Class Number Class Name Patents
257/580 With current ballasting means (e.g., emitter ballasting resistors or base current ballasting means) 67

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8691684 Layout and pad floor plan of power transistor for good performance of SPU and STOG Apr. 8, 2014
8653628 Power semiconductor device and method of manufacturing the same Feb. 18, 2014
8513774 Low-voltage structure for high-voltage electrostatic discharge protection Aug. 20, 2013
8502347 Bipolar junction transistor with epitaxial contacts Aug. 6, 2013
8384193 Bipolar transistor with two different emitter portions having same type dopant of different concentrations for improved gain Feb. 26, 2013
8354733 IGBT power semiconductor package having a conductive clip Jan. 15, 2013
8334179 Semiconductor device and method for its production Dec. 18, 2012
8299579 Method for generating a signal representative of the current delivered to a load by a power device and relative power device Oct. 30, 2012
8294244 Semiconductor device having an enlarged emitter electrode Oct. 23, 2012
8212292 High gain tunable bipolar transistor Jul. 3, 2012
8178947 Semiconductor device May. 15, 2012
8013423 Method for fabricating a metal interconnection using a dual damascene process and resulting semiconductor device Sep. 6, 2011
8008746 Semiconductor device Aug. 30, 2011
8008723 Semiconductor device including a plurality of diffusion layers and diffusion resistance layer Aug. 30, 2011
7989921 Soi vertical bipolar power component Aug. 2, 2011
7943959 Low capacitance semiconductor device May. 17, 2011
7932582 Compact dual direction BJT clamps Apr. 26, 2011
7911032 Method for generating a signal representative of the current delivered to a load by a power device and relative power device Mar. 22, 2011
7666787 Grain growth promotion layer for semiconductor interconnect structures Feb. 23, 2010
7652350 Semiconductor device Jan. 26, 2010
7638816 Epitaxial surge protection device Dec. 29, 2009
7626267 Semiconductor integrated circuit device including wiring lines and interconnections Dec. 1, 2009
7622796 Semiconductor package having a bridged plate interconnection Nov. 24, 2009
7615846 Semiconductor device Nov. 10, 2009
7560771 Insulated gate transistor Jul. 14, 2009
7411304 Semiconductor interconnect having conductive spring contacts Aug. 12, 2008
7319264 Semiconductor device Jan. 15, 2008
7239007 Bipolar transistor with divided base and emitter regions Jul. 3, 2007
7235860 Bipolar transistor including divided emitter structure Jun. 26, 2007
7135756 Array of cells including a selection bipolar transistor and fabrication method thereof Nov. 14, 2006
7112537 Method of fabricating interconnection structure of semiconductor device Sep. 26, 2006
7071514 Electrostatic discharge protection device Jul. 4, 2006
6930373 Circuit arrangement Aug. 16, 2005
6853053 BJT based ESD protection structure with improved current stability Feb. 8, 2005
6798019 IGBT with channel resistors Sep. 28, 2004
6784499 Semiconductor device serving as a protecting element Aug. 31, 2004
6762479 Microwave array transistor for low-noise and high-power applications Jul. 13, 2004
6740914 FET circuit block with reduced self-heating May. 25, 2004
6724067 Low stress thermal and electrical interconnects for heterojunction bipolar transistors Apr. 20, 2004
6700226 Multi-emitter bipolar transistor for bandgap reference circuits Mar. 2, 2004
6677625 Bipolar transistor Jan. 13, 2004
6674147 Semiconductor device having a bipolar transistor structure Jan. 6, 2004
6600179 Power amplifier with base and collector straps Jul. 29, 2003
6577200 High-frequency semiconductor device Jun. 10, 2003
6483188 Rf integrated circuit layout Nov. 19, 2002
6476495 Transistor which can minimize the DC resistance of the wiring and lead formed on a semiconductor chip Nov. 5, 2002
6445068 Semiconductor module Sep. 3, 2002
6316827 Semiconductor device having improved temperature distribution Nov. 13, 2001
6303973 Power transistor having large electric current capacity and semiconductor integrated circuit device using the same Oct. 16, 2001
6236072 Method and system for emitter partitioning for SiGe RF power transistors May. 22, 2001

1 2 3

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