MMBD4448HTA-7-F

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The MMBD4448HTA-7-F is a diode array developed by ON Semiconductor that is designed to protect electronics by clamping voltage and providing transient protection in applications like USB power lines. It is commonly used in Industrial, Automotive, and Telecommunications applications, as well as in lighting, home appliances, and computing.

The device is composed of four independent silicon diodes in a single package. It is designed to provide an increased level of protection against transient overvoltages in USB applications and has electrostatic discharge protection up to 25kV. It is small in size and low profile, making it ideal for space-constrained applications. The device also integrates ESD protection diodes for all I/O pins.

The device includes two internal diodes, the first of which is connected between the cathode of the upper pair of diodes and the anode of the lower pair of diodes. This diode provides protection from powered high-side (source) transients, and also clamps voltage on the drained line in the case of excessive high side transients. The second internal diode is connected between the anode of the upper pair of diodes and the cathode of the lower pair of diodes and provides protection against low side (sink) transients.

The MMBD4448HTA-7-F has an operating voltage ranging from -50V to +50V and a peak pulse current of 400mA, making it ideal for applications that require a low reverse breakdown and a high pulsed current capability, such as high frequency switching power supplies. The device also features a fast response time and a low forward voltage (typically 0.6V).

The MMBD4448HTA-7-F is highly reliable and is rated for an operational temperature range of -40°C to +125°C. It is ideally suited for portable or mobile applications, as it has an excellent thermal shock, humidity, and vibration resistance. The device is RoHS compliant, and is packaged in a SOD-123FL package, making it compact and easy to integrate into many different applications.

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