L401E373

Series:	--
Packaging:	Bulk
Part Status:	Obsolete
Triac Type:	Logic - Sensitive Gate
Voltage - Off State:	400V
Current - On State (It (RMS)) (Max):	1A
Voltage - Gate Trigger (Vgt) (Max):	1.3V
Current - Non Rep. Surge 50, 60Hz (Itsm):	16.7A, 20A
Current - Gate Trigger (Igt) (Max):	3mA
Current - Hold (Ih) (Max):	5mA
Configuration:	Single
Operating Temperature:	-65°C ~ 125°C (TJ)
Mounting Type:	Through Hole
Package / Case:	TO-226-3, TO-92-3 (TO-226AA)
Supplier Device Package:	TO-92

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<p>The L401E373 is a triac or Triode Alternating Current Switch, made and sold by a corporation called Vishay. Triacs are a type of voltage-regulated thyristor, made from three p-n junction semiconductor layers. They operate as switches in alternating current circuits, offering very high current capacity and are capable of switching between forward and reverse conduction.The L401E373 is designed for use in polarized applications, being designed and manufactured to control the flow of current through heaters, resistors, fans, and other AC equipment, as well as in AC motor switching. It is also suitable for low-voltage applications with line voltages up to 380 volts.The L401E373 has an operating temperature range of -40° to 125°C and is stocked in a variety of packages. The most common packages are the TO-220 and TO-3P, but there are other packages available. It has a surge current rating of 600A and a hold current rating of 300A.The L401E373 is a 200V triac with a maximum load current of 6 Amps, featuring a gate trigger current of 1.5mA. Its on-state current at 400V is 1.7A, and its peak off-state voltage is between 600V and 800V. It has a typical fall time of 2.2uS and a typical rise time of 0.7uS.The L401E373 utilizes a unique semiconductor principle called bidirectional conduction to control current flow in an alternating current circuit. The principal involves the use of a three-layer semiconductor structure, consisting of p-type and n-type junctions. This structure has a negative resistance, meaning that when the gate current is increased, the main current increases as well. When current flowing in one direction is switched off, current flowing in the opposite direction is also switched off. The main difference between the L401E373 and other thyristors is its self-control feature – without additional external components, the L401E373 requires only one gate pulse to switch between the forward and reverse conduction states. This makes it uniquely suited for applications requiring precise, controllable current flow in both directions, such as AC motor speed regulation, AC temperature control systems, and other AC device control tasks.The L401E373 is an excellent choice for applications requiring a reliable and precise solution for controlling AC power. It has demonstrated itself to be one of the most versatile and reliable options for numerous applications ranging from motor controls, Switch-Mode Power Supplies (SMPS), and power switching, just to name a few.</p><p>The L401E373triac is a very popular choice in the market thanks to its reliability and wide range of applications. It is an easy solution for those needing an affordable and efficient way to control AC power. Additionally, its high current capacity, fast switching times, and reliable operation make it a great option for a variety of applications.</p>

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