SMBG4737AE3/TR13

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Diodes are electrical devices that are used as a semiconductor to control the flow of current in an electrical circuit. Zener diodes are a type of diode that allow current to flow from their anode, or "forward-biased" lead to their cathode, or "reverse-biased" lead. The SMBG4737AE3/TR13 is a single Zener diode that is specifically designed for use in high temperature applications. In this article, we will discuss the application field and working principle of the SMBG4737AE3/TR13.

The SMBG4737AE3/TR13 is designed to withstand temperatures between -65°C and 150°C without malfunctioning. This makes it ideal for use in automotive, aerospace, and industrial applications where temperatures can vary from cold to hot. Additionally, the SMBG4737AE3/TR13 is hermetically sealed for protection against environmental and electrical stress as well as having a low-resistance design for improved conductivity, making it a highly reliable device for tough applications.

In terms of working principle, the SMBG4737AE3/TR13 is a unidirectional device, meaning that it only allows current to flow from its anode to its cathode. When the voltage across the diode exceeds its rated Zener voltage (VZ), then the Zener diode will effortlessly start to break down and the excess voltage is regulated by the Zener voltage, allowing current to flow between the circuit and the diode. The rated voltage of the SMBG4737AE3/TR13 is 16V, meaning it will start to break down and regulate any voltage above 16V. This process happens quickly, allowing it to safely and reliably clamp the power supply voltages to the designed levels.

The SMBG4737AE3/TR13 is also engineered with Avalanche breakdown protection. This happens when the voltage across the diode suddenly increases and causes a breakdown of the diode’s junction, creating a short circuit between the anode and cathode. The short circuit in turn causes a sharp drop in the voltage across the diode and a sudden surge in the current, which can result in the destruction of the diode. However, the SMBG4737AE3/TR13 has a very low avalanche voltage, meaning it will remain functional and the voltage across it will stay regulated even when it is subjected to higher than normal voltages.

Overall, the SMBG4737AE3/TR13 is an incredibly resilient and reliable single Zener diode that is designed specifically for use in harsh environment applications. With its wide temperature range, hermetic seal, low-resistance design, and avalanche breakdown protection, the SMBG4737AE3/TR13 is perfect for industrial, automotive, and aerospace applications.

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