LQA40T200C

Series:	Qspeed™
Packaging:	Tube
Part Status:	Active
Diode Configuration:	1 Pair Common Cathode
Diode Type:	Standard
Voltage - DC Reverse (Vr) (Max):	200V
Current - Average Rectified (Io) (per Diode):	20A
Voltage - Forward (Vf) (Max) @ If:	1.2V @ 20A
Speed:	Fast Recovery = 200mA (Io)
Reverse Recovery Time (trr):	17ns
Current - Reverse Leakage @ Vr:	500µA @ 200V
Operating Temperature - Junction:	-55°C ~ 150°C
Mounting Type:	Through Hole
Package / Case:	TO-220-3
Supplier Device Package:	TO-220AB

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LQA40T200C Application Field and Working Principle

LQA40T200C is a diode array manufactured by ON Semiconductor. It is designed to enable faster switching times compared to discrete diodes while providing bidirectional protection. It is widely used in various applications as a result of its advantages in size, performance, and reliability.

Power Applications

LQA40T200C is often used in power applications to protect sensitive circuit components from damaging overvoltages. It features low capacitance, which helps to reduce power supply noise. This device can be found in many power adapter designs, where it helps to limit the output voltage to the rated value. Additionally, LQA40T200C is ideal for use in high-side power switches, where it helps to protect against negative spike events.

Wireless Applications

This device is also widely used in wireless applications, as it is able to provide fast switching protection against ESD, EFT, and ESD. This feature makes the LQA40T200C ideal for use in cellular phones, WLAN equipment, and other high-frequency applications. This device also offers protection against EMI, reducing the risk of data loss or functional errors due to interference.

Automotive Applications

LQA40T200C is often used in automotive applications, where it helps to protect control circuits from overvoltage events. This diode array can be used in voltage clamps, which helps to limit any spikes in the input voltage and maintain safety conditions in the circuit. Additionally, this diode array is commonly found in Advanced Driver Assistance Systems (ADAS) to provide fast switching protection against electrostatic discharge (ESD).

Working Principle

The LQA40T200C is a bidirectional device, meaning it can protect against both positive and negative overvoltage events. It features a series of four diodes which are connected in anti-parallel. This type of configuration allows the diode array to provide fast switching protection with minimal power loss. The threshold levels of the device are typically set between 12 V and 15 V, depending on the application.When the input voltage rises above the threshold level, the diode array will begin to conduct. This creates a current path between the two terminals, which helps to protect the circuit by directing the overvoltage away from the sensitive components. Once the voltage drops below the threshold level, the device will become reverse biased and the path is broken, thus removing the protective current path.

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