ZM4745A-GS18

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The ZM4745A-GS18 is a single Zener diode, manufactured by IXYS M/A-COM Technology Solutions, Inc (MACOM). This diode provides a wide range of applications and is designed for use in a variety of applications from industrial to consumer electronics equipment. The diode is a single junction, silicon planar type diode and is housed in an 8-pin surface-mount package.

The device operating temperature range is from -55°C to 150°C and it has a VZ (Zener voltage) range of 13.1VDC to 30VDC. Its breakdown voltage is 20V, with a maximum zener current of 600mA. The Zener voltage can be adjusted with a suitable external voltage source. It is also available in a variety of packages, including Dieley package.

The ZM4745A-GS18 is mainly used in high-temperature applications such as automotive, AV electronics, HVAC, LED lighting, and other industrial applications. The device helps to minimize power dissipation and increase system reliability. The diode has a low leakage current and low thermal resistance, making it an ideal choice for temperature-sensitive applications. Furthermore, the diode also provides a low conduction resistance which helps to improve system performance.

The working principle of the ZM4745A-GS18 is simple. The diode consists of a p-n junction formed between two regions of semiconductor material, one with an excess of electrons, and the other with an excess of holes. When a reverse voltage is applied across the junction, it produces a potential barrier known as the Zener voltage. As the voltage is increased, the barrier height decreases and current starts to flow through the diode.

This current causes the Joule heating effect, and the heat generated by this effect is dissipated by the diode’s internal structure. This generates a constant voltage drop across the diode which is dependent on the Zener voltage, as well as its power ratings. The Zener current can also be adjusted externally.

In summary, the ZM4745A-GS18 is a single Zener diode designed for use in high-temperature applications. The diode offers low leakage current and low thermal resistance, making it well-suited for applications requiring temperature-sensitive components. The diode’s working principle is based on the reverse-bias breakdown of the p-n junction, which generates a constant voltage drop across the diode.

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