MA21D3400L

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Diode Type:	Schottky
Voltage - DC Reverse (Vr) (Max):	30V
Current - Average Rectified (Io):	1A
Voltage - Forward (Vf) (Max) @ If:	380mV @ 1A
Speed:	Fast Recovery = 200mA (Io)
Reverse Recovery Time (trr):	14ns
Current - Reverse Leakage @ Vr:	1.2mA @ 30V
Capacitance @ Vr, F:	45pF @ 10V, 1MHz
Mounting Type:	Surface Mount
Package / Case:	2-SMD, Flat Lead
Supplier Device Package:	Smini2-F2
Operating Temperature - Junction:	150°C (Max)
Base Part Number:	MA21D34

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Diodes - Rectifiers - Single

The most popular type of diode used for various applications is the single diode, also referred to as a rectifier. Single rectifiers are semiconductor devices that allow current to pass in one direction only. They are typically used to convert alternating current (AC) to direct current (DC). They are also used for various other applications such as protection against reverse-polarity connection, voltage clamping, rectification, voltage doubling and voltage stabilization.The particular model of single diode that we will be focusing on in this article is the MA21D3400L. This diode is an ultra-high cutoff diode with a Peak Repetitive Reverse Voltage (VRRM) of 200 V and Maximum Average Salvage Voltage (VAV) of 300 V. It has a Maximum Reverse Current (Irr) of 15 mA and a Maximum Continuous Forward Current (IFM) of 1.5 A. It is primarily used as a rectifier in switching power supplies and is also used in telecom and industrial applications.

Application Field

The MA21D3400L diode is primarily used in switching power supplies, due to its ultra-high cutoff voltage and current ratings. It is also used in telecom and industrial applications, where current rectification and voltage stabilization are critical. In addition, this diode can be used for protection against reverse-polarity connection, voltage clamping, rectification, voltage doubling and voltage stabilization.

Working Principle

Single rectifiers are semiconductor devices that allow current to pass in one direction only. This is because of their ability to form a p-n junction, which consists of a positively doped p-type side and a negatively doped n-type side. The diode is designed such that the voltage-current (V-I) characteristic when current flows through it has the shape of a rectified sine wave. When the diode is under forward bias (operation with an applied voltage above its threshold value), the minority carriers present in the p-n junction are swept across it. This causes current to flow in the forward direction and the diode acts as a “short circuit”. When the voltage across the diode is reversed, the minority carriers are swept away in the opposite direction and no current flows, effectively acting as an “open circuit” condition.

Conclusion

The MA21D3400L is a single rectifier, meaning it allows current to pass in one direction only. It is primarily used for applications such as protection against reverse-polarity connection, voltage clamping, rectification, voltage doubling and voltage stabilization. Its working principle is based on its ability to form a p-n junction, which creates a rectified sine wave when current passes through.

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