SMBG5948A/TR13

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A SMBG5948A/TR13 is an ideal diode product designed by STMicroelectronics. It is a single, dual-in-line (DIP) zener diode that functions as a low power regulator. It helps in providing a stable voltage in various circuit designs and power management. The SMBG5948A/TR13 offers a high temperature operating range up to 150°C, an impressive reverse leakage current of 2.5V, and a total capacitance of 1 µF.

SMBG5948A/TR13 Application Fields

The SMBG5948A/TR13 is mainly used to draw off the harmful current in power supplies, providing the desired output voltage in computer systems and other devices. It can also be used in voltage-limiting protection circuits, such as in line protection schemes. Its design also allows use in high temperature applications, making it an excellent choice for occasions where reliable voltage regulation is required in tough environmental conditions.

SMBG5948A/TR13 Working Principle

A simplified diagram of a single zener diode power regulator is presented in Figure 1. When the input voltage is below the zener breakdown voltage, the zener diode remains reverse biased and off, allowing any remaining current to pass through the load in normal operation.

When the input voltage reaches or exceeds the zener breakdown voltage, the zener diode is forward biased and conducts, limiting the output voltage to the zener breakdown voltage. The current passing through the zener diode is determined by the ratio of the zener breakdown voltage to the resistance of the load.

The SMBG5948A/TR13 functions in the same way, however, it has been specifically designed to withstand high temperatures and still provide the desired output voltage.

Conclusion

In conclusion, the SMBG5948A/TR13 single zener diode is an excellent choice for applications requiring reliable voltage regulation under demanding operating conditions. Its high temperature range and low reverse leakage current make it ideal for protecting circuits from excessive current flow, as well as providing stable output voltages.

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