CMUD4448 TR

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Diode Type:	Standard
Voltage - DC Reverse (Vr) (Max):	75V
Current - Average Rectified (Io):	250mA
Voltage - Forward (Vf) (Max) @ If:	1V @ 100mA
Speed:	Fast Recovery = 200mA (Io)
Reverse Recovery Time (trr):	4ns
Current - Reverse Leakage @ Vr:	25nA @ 20V
Capacitance @ Vr, F:	4pF @ 0V, 1MHz
Mounting Type:	Surface Mount
Package / Case:	SC-89, SOT-490
Supplier Device Package:	SOT-523
Operating Temperature - Junction:	-65°C ~ 150°C

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IntroductionCMUD4448 TR is a rectifying diode designed and manufactured by STMicroelectronics. It is a member of the power diode family with an ultra-high frequency, high power and low loss. This diode can be used in a variety of applications wherever, high-frequency power loss needs to be minimized.Application FieldCMUD4448 TR is commonly used in high-frequency rectifiers, such as HF radio receivers and transmitters, audio amplifiers, switching regulators, dc motors, and home appliances. It is also typically used when long-term power dissipation is important, such as in power supplies.CMUD4448 TR is also increasingly being used in automotive applications such as power cars, hybrid electric vehicles, and solar panels. Its high-frequency capabilities also make CMUD4448 TR a great choice for other electrical applications as well.Working PrincipleCMUD4448 TR works on the principle of rectification. It can rapidly switch between forward and reverse bias modes, allowing for a strong rectification effect at high frequencies. It functions by blocking current in the reverse direction, while allowing current to flow through it in the forward direction.When forward biased, the diode is in a "on" state and current is allowed to flow through its p-n junctions. When reverse biased, the diode is in an "off" state and no current flows. During this "off" state, the diode\'s junctions are protected from static charges and possible damage due to current surges.The CMUD4448 TR is designed to be efficient and reliable. It utilizes a low-resistance voltage-variable resistor (VVR) layer which reduces the current flow, resulting in a low dropout voltage. This allows for a low power dissipation and a higher efficiency across a wider range of forward and reverse biasing.ConclusionIn conclusion, the CMUD4448 TR is a power diode designed to reduce power dissipation while increasing efficiency. It is ideal for high-frequency applications such as radio receivers and transmitters, audio amplifiers, and switching regulators. It is also well-suited for use in automotive applications, as well as in power supplies. With its low-resistance VVR layer and its ability to quickly switch between forward and reverse biasing, the CMUD4448 T is both efficient and reliable.

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