MMBD4448V-7

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Diode Configuration:	2 Independent
Diode Type:	Standard
Voltage - DC Reverse (Vr) (Max):	80V
Current - Average Rectified (Io) (per Diode):	250mA
Voltage - Forward (Vf) (Max) @ If:	1.25V @ 150mA
Speed:	Fast Recovery = 200mA (Io)
Reverse Recovery Time (trr):	4ns
Current - Reverse Leakage @ Vr:	100nA @ 70V
Operating Temperature - Junction:	-65°C ~ 150°C
Mounting Type:	Surface Mount
Package / Case:	SOT-563, SOT-666
Supplier Device Package:	SOT-563
Base Part Number:	MMBD4448V

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MMBD4448V-7 is a component belonging to the diodes-rectifiers-arrays family. It is an ultra-small surface mount Schottky barrier rectifier array, normally used for surface mounting onto a printed circuit board.In terms of physical structure, the MMBD4448V-7 has two rows of four rectifiers, each row has two pins, A1 and A2, and each string has a cathode and an anode. Each row has a common cathode and a common anode with a common barrier.The MMBD4448V-7 has several advantages that make it a popular choice for many applications. It is well suited for applications where small size and low price are important. It has low forward voltage drop to reduce conduction losses. It also has low leakage current. It also has a low capacitance, high speed switching, and low storage time. It is well suited for medium speed switching and high frequency applications due to its low capacitance and fast recovery time.In terms of application field, the MMBD4448V-7 is commonly used as an inverter bridge rectifier in automotive electronics, as well as in high speed communication systems. It is also used in switching power supplies for electronic equipment, especially when circuit size and cost are important factors.In terms of working principle, the MMBD4448V-7 consists of a Schottky barrier rectifier array, which consists of two pn junction diodes and two Schottky diodes. The Schottky diodes are essentially pn junction diodes with a very thin metal barrier, which is composed of molybdenum or chromium instead of an oxidation layer. The low forward voltage and fast recovery time of the Schottky diodes reduce power losses and increase the efficiency of the rectifier array. The Schottky barrier rectifier array allows current to flow only in one direction, thus forming a full-wave rectifier. When a voltage is applied to the rectifier, current flows only through the pn junction diodes, then to the Schottky diodes, then through the load. The Schottky barrier also reduces the reverse leakage current, due to which the device operates hotter and more efficiently, making it ideal for applications such as high frequency communication systems.In summary, the MMBD4448V-7 is a popular component belonging to the diodes-rectifiers-arrays family, mainly used for surface mounting onto a printed circuit board. It has several advantages, including low forward voltage drop to reduce conduction losses, low capacitance, high speed switching, and low storage time, making it ideal for automotive electronics, high speed communication systems, and switching power supplies. Its working principle is based on a Schottky barrier rectifier array, which allows current to flow only in one direction, and reduces the reverse leakage current.

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