20TQ040 Discrete Semiconductor Products

Series:	--
Packaging:	Tube
Part Status:	Active
Diode Type:	Schottky
Voltage - DC Reverse (Vr) (Max):	40V
Current - Average Rectified (Io):	20A
Voltage - Forward (Vf) (Max) @ If:	570mV @ 20A
Speed:	Fast Recovery = 200mA (Io)
Current - Reverse Leakage @ Vr:	2.7mA @ 40V
Capacitance @ Vr, F:	1400pF @ 5V, 1MHz
Mounting Type:	Through Hole
Package / Case:	TO-220-2
Supplier Device Package:	TO-220AC
Operating Temperature - Junction:	-55°C ~ 150°C

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Introduction to 20TQ040

20TQ040 is a single high-voltage rectifier produced by Diodes. It is widely used in various switching power supplies, power rectification and voltage regulation in industrial and home appliance equipment.20TQ040 is a high-voltage Schottky diode with an average forward current (Io) of 40A. It has higher repetition rate, larger forward current and low output capacitance and reverse recovery time. This makes it ideal for power applications with higher power demands requiring fast turn on and off.

Application Field

20TQ040 can be used in many different applications. One of the most important applications is in power supplies such as AC adapters, power rectifiers, DC-DC converters and chargers. The diode can also be used in automotive applications such as lighting and start systems. The diode is also perfect for rectifying the AC mains power in low power AC–DC converters for small appliances and lighting circuits.20TQ040 is also highly recommended for power supplies that require high surge current capability. Its repetitive peak reverse voltage of 200 V makes it perfect for handling high transient surges. It can handle large peak output currents and recovers quickly after each surge. It is also perfect for applications that require low capacitance for higher switching frequencies.

Working Principle

At the heart of 20TQ040’s operation is a rectifier. The rectifier is a special type of semiconductor that allows electrical current to flow in one direction but blocks current in the reverse direction. In the case of 20TQ040, the diode is constructed with a metal-semiconductor junction which is Schottky type. This type of diode allows a very low reverse leakage current of only 0.5mA. When a DC current is applied to the 20TQ040 in the forward direction, the metal-semiconductor junction allows the current to flow freely. However, when the current is reversed, the junction will block the current as the metal-semiconductor junction will not allow current to flow in the reverse direction. This makes the diode perfect for power rectification and voltage regulation.

Conclusion

20TQ040 is a single high-voltage rectifier produced by Diodes for switching power supplies, power rectification and voltage regulation. It can handle high repetitive peak reverse voltage, large peak output currents, and recovers quickly after each surge. The diode also has a low forward voltage drop, very low reverse leakage current and low capacitance. This makes it the ideal choice for many different types of power applications.

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