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Class Information
Number: 257/578
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Bipolar transistor structure > With enlarged emitter area (e.g., power device)
Description: Subject matter wherein the device has relatively enlarged emitter cross-sectional areas (e.g., power devices).










Sub-classes under this class:

Class Number Class Name Patents
257/582 With current ballasting means (e.g., emitter ballasting resistors or base current ballasting resistors) 71
257/584 With housing or contact (i.e., electrode) means 138
257/583 With means to reduce transistor action in selected portions of transistor (e.g., heavy base region doping under central web of emitter to prevent secondary breakdown) 72
257/579 With separate emitter areas connected in parallel 134


Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8680668 Device including a semiconductor chip and metal foils Mar. 25, 2014
8587101 Multi-chip module (MCM) power quad flat no-lead (PQFN) semiconductor package utilizing a leadframe for electrical interconnections Nov. 19, 2013
8575746 Chip on flexible printed circuit type semiconductor package Nov. 5, 2013
8569865 Integrated circuit and production method Oct. 29, 2013
8541833 Power transistor device vertical integration Sep. 24, 2013
8536680 ESD protection circuit and semiconductor device Sep. 17, 2013
8530904 Semiconductor device including a normally-on transistor and a normally-off transistor Sep. 10, 2013
8399907 VTS insulated gate bipolar transistor Mar. 19, 2013
8384194 Power semiconductor device comprising a plurality of trench IGBTs Feb. 26, 2013
8358014 Structure and method for power field effect transistor Jan. 22, 2013
8350371 Semiconductor device and method of manufacturing semiconductor device Jan. 8, 2013
8330252 Integrated circuit device and method for the production thereof Dec. 11, 2012
8309395 Method of fabricating a high-temperature compatible power semiconductor module Nov. 13, 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
8269304 MOS gate power semiconductor device with anode of protection diode connected to collector electrode Sep. 18, 2012
8269308 Semiconductor device with cross-talk isolation using M-cap and method thereof Sep. 18, 2012
8212292 High gain tunable bipolar transistor Jul. 3, 2012
8193618 Semiconductor die package with clip interconnection Jun. 5, 2012
8164162 Power semiconductor devices integrated with clamp diodes sharing same gate metal pad Apr. 24, 2012
8124449 Device including a semiconductor chip and metal foils Feb. 28, 2012
8115280 Four-terminal gate-controlled LVBJTs Feb. 14, 2012
8076755 Semiconductor device and method of manufacturing the same Dec. 13, 2011
8008746 Semiconductor device Aug. 30, 2011
8004008 Semiconductor device Aug. 23, 2011
7952165 Heterojunction bipolar transistor (HBT) with self-aligned sub-lithographic metal-semiconductor alloy base contacts May. 31, 2011
7936047 Method for realizing a contact of an integrated well in a semiconductor substrate, in particular for a base terminal of a bipolar transistor, with enhancement of the transistor performances May. 3, 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
7880288 Semiconductor module with semiconductor chips and method for producing it Feb. 1, 2011
7772060 Integrated SiGe NMOS and PMOS transistors Aug. 10, 2010
7723824 Methodology for recovery of hot carrier induced degradation in bipolar devices May. 25, 2010
7701038 High-gain vertex lateral bipolar junction transistor Apr. 20, 2010
7675113 Insulated gate transistor Mar. 9, 2010
7655977 Trench IGBT for highly capacitive loads Feb. 2, 2010
7615846 Semiconductor device Nov. 10, 2009
7605446 Bipolar high voltage/power semiconductor device having first and second insulated gated and method of operation Oct. 20, 2009
7569875 Semiconductor device and a method for producing the same Aug. 4, 2009
7571415 Layout of power device Aug. 4, 2009
7528461 Bipolar power transistor and related integrated device with clamp means of the collector voltage May. 5, 2009
7524730 Method of fabricating bipolar junction transistor Apr. 28, 2009
7504729 Semiconductor device with extraction electrode Mar. 17, 2009
7489018 Transistor Feb. 10, 2009
7470968 T-coil apparatus and method for compensating capacitance Dec. 30, 2008
7446012 Lateral PNP transistor and the method of manufacturing the same Nov. 4, 2008
7414298 Super self-aligned collector device for mono-and hetero bipolar junction transistors, and method of making same Aug. 19, 2008
7394113 Self-alignment scheme for a heterojunction bipolar transistor Jul. 1, 2008
7385273 Power semiconductor device Jun. 10, 2008
7368361 Bipolar junction transistors and method of manufacturing the same May. 6, 2008
7358545 Bipolar junction transistor Apr. 15, 2008
7345351 Coating composition for insulating film production, preparation method of insulation film by using the same, insulation film for semi-conductor device prepared therefrom, and semi-conductor de Mar. 18, 2008

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