MMBD4448HTW-7

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MMBD4448HTW-7 is a kind of diode array chip with multiple full bridge rectifier diodes, specially designed for high frequency rectifier applications and working with high temperatures. It is most commonly used in various modern appliances, because of its low forward voltage, fast switching capability and other advantages. The working principle of MMBD4448HTW-7 is to utilize the rectifier diodes inside to convert alternating current (AC) input into direct current (DC) output. The bridge rectifier is essentially composed of four diodes arranged in a clamped topology, two are positively connected and the other two are negatively connected.

In the direct current rectifier circuit, MMBD4448HTW-7 diode can greatly reduce the rectified current ripple caused by low frequency and short doubled wave type. It can also reduce the distortion coefficient of voltage, current or power caused by the positive half cycle and negative half cycle of the alternating current wave to make the rectified voltage waveform is more closer to DC output. During the conversion process, it can prevent the current reverse flowing in opposite direction.

MMBD4448HTW-7 can be divided into two types, the normal bridge rectifier and the combined bridge rectifier. In the normal bridge rectifier, two of the diodes are forwardly connected and the other two are reversely connected, acting as four arms of the rectifier circuit. It can convert a single-phase AC input into a full wave DC output. And in the combined bridge rectifier, it is composed of a reverse inhibitor diode (RID), a reverse current limiting diode (RCLD) and two antiparallel normal diodes (D) acting as four braced arms. It can convert a two-phase AC input into a full wave DC output.

MMBD4448HTW-7 is applied in the fields can be divided mainly into the following parts:

• Computer and Communication Applications: It can be used in various computer and communication applications, such as for rectifying supply for logic power, for controlling of dataline signal, for isolate and display of data, also for signal rise speed up.
• Harmonization of Circuit: The bridge rectifier can be applied to harmonization of circuit, such as for improving the signal to noise ratio and for for purifying of sinusoidal signal waveform to obtain a steady state waveform.
• Digital Electronic Circuit: MMBD4448HTW-7 bridge rectifier is also widely used in digital electronic circuit due to its higher isolation degree, fast response and voltage limiting capability.
• Automobile Supplies: Apart from being used in computer and communication, MMBD4448HTW can also be used in automobile supplies as power converter and general power rectifier.

The application of MMBD4448HTW-7 bridge rectifier has become increasingly common nowadays. It can improve the reliability and capacitance of power supply circuit in the case of tough working environment. Feature of outstanding temperature performance and low conductance have made MMBD4448HTW-7 bridge rectifier plays an important role in the development of industrial and commercial electronics.

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