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Class Information
Number: 257/E29.215
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Semiconductors devices adapted for rectifying, amplifying, oscillating, or switching, capacitors, or resistors with at least one potential-jump barrier or surface barrier (epo) > Types of semiconductor device (epo) > Controllable by only signal applied to control electrode (e.g., base of bipolar transistor, gate of field-effect transistor) (epo) > Bipolar device (epo) > Thyristor-type device (e.g., having four-zone regenerative action) (epo) > Bidirectional device (e.g., triac) (epo)
Description: This subclass is indented under subclass E29.211. This subclass is substantially the same in scope as ECLA classification H01L29/747.

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8664690 Bi-directional triode thyristor for high voltage electrostatic discharge protection Mar. 4, 2014
8586423 Silicon controlled rectifier with stress-enhanced adjustable trigger voltage Nov. 19, 2013
8552467 Four-quadrant triac Oct. 8, 2013
8552530 Vertical transient voltage suppressors Oct. 8, 2013
8530284 Method of forming a bi-directional transistor with by-pass path Sep. 10, 2013
8497526 Low triggering voltage DIAC structure Jul. 30, 2013
8338855 Voltage-controlled bidirectional switch Dec. 25, 2012
8242534 Semiconductor device and manufacturing method thereof Aug. 14, 2012
7989923 Bi-directional transient voltage suppression device and forming method thereof Aug. 2, 2011
7910410 Integrated low leakage Schottky diode Mar. 22, 2011
7859010 Bi-directional semiconductor ESD protection device Dec. 28, 2010
7745845 Integrated low leakage schottky diode Jun. 29, 2010
7615801 High voltage silicon carbide devices having bi-directional blocking capabilities Nov. 10, 2009
7537970 Bi-directional transistor with by-pass path and method therefor May. 26, 2009
7423298 Bidirectional photothyristor chip, optical lighting coupler, and solid state relay Sep. 9, 2008
7402845 Cascoded rectifier package Jul. 22, 2008
7274047 Silicon controlled rectifier electrostatic discharge protection device for power supply lines with powerdown mode of operation Sep. 25, 2007
7193251 ESD protection cluster and method of providing multi-port ESD protection Mar. 20, 2007
7190006 Symmetrical planar diac Mar. 13, 2007
6967356 Vertical component with high-voltage strength Nov. 22, 2005
6963087 Pulsed bistable bidirectional electronic switch Nov. 8, 2005
6956248 Semiconductor device for low voltage protection with low capacitance Oct. 18, 2005
6927427 Bidirectional static switch responsive in quadrants Q4 and Q1 Aug. 9, 2005
6921930 Pulse-controlled bistable bidirectional electronic switch Jul. 26, 2005
6914271 High-voltage bidirectional switch Jul. 5, 2005
6862162 Thyristor circuit providing overcurrent protection to a low impedance load Mar. 1, 2005
6818927 Sensitive high bidirectional static switch Nov. 16, 2004
6781156 Recombination center diffusion controlled by carbon concentration Aug. 24, 2004
6696709 Low voltage protection module Feb. 24, 2004
6593600 Responsive bidirectional static switch Jul. 15, 2003
6580100 Voltage-controlled vertical bidirectional monolithic switch Jun. 17, 2003
6552370 Network of triacs with gates referenced with respect to a common opposite face electrode Apr. 22, 2003
6541801 Triac with a holding voltage that is greater than the dc bias voltages that are on the to-be-protected nodes Apr. 1, 2003
6507050 Thyristors having a novel arrangement of concentric perimeter zones Jan. 14, 2003
6479841 Power component state detector Nov. 12, 2002
6480056 Network of triacs with gates referenced with respect to a common opposite face electrode Nov. 12, 2002
6407901 Semiconductor device providing overvoltage and overcurrent protection for a line Jun. 18, 2002
6380565 Bidirectional switch with increased switching breakdown voltage Apr. 30, 2002
6323718 Normally-on bidirectional switch Nov. 27, 2001
6252256 Overvoltage protection circuit Jun. 26, 2001
6078065 Bilaterally controllable thyristor Jun. 20, 2000
6034381 Network of triacs with gates referenced with respect to a common opposite face electrode Mar. 7, 2000
6023078 Bidirectional silicon carbide power devices having voltage supporting regions therein for providing improved blocking voltage capability Feb. 8, 2000
5923055 Controllable semiconductor component Jul. 13, 1999
5900651 High-withstand-voltage semiconductor device May. 4, 1999
5861639 Breakover-triggered dipole component having a controlled sensitivity Jan. 19, 1999
5818074 Smooth switching thyristor Oct. 6, 1998
5815359 Semiconductor device providing overvoltage protection against electrical surges of positive and negative polarities, such as caused by lightning Sep. 29, 1998
5757033 Bidirectional thyristor with MOS turn-off capability with a single gate May. 26, 1998
5696391 Overload protection circuit Dec. 9, 1997

1 2 3

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