1SMA4748TR

Diodes - Zener - Single

1SMA4748TR is the most common type of 1SMA5000TR series of Zener diodes. This popular device is typically used in DC-DC converters, such as switching power converters, voltage regulators, and over-voltage and over-current protection circuits. It has a high maximum Zener voltage of 500 volts and a high peak repetitive reverse current of 200 amperes, making it ideal for applications requiring high voltage and high current switching.

The working principle of 1SMA4748TR is relatively simple, yet highly effective and reliable. When no applied Voltage is across a Zener diode, it exhibits a blocking action and does not allow any current to flow. However, when a forward Voltage is applied, which is greater than the breakdown or Zener Voltage, the device starts conducting current, operating in the Zener region of the diode. This action provides a stable reference voltage.

Application Field of 1SMA4748TR

The 1SMA4748TR has many practical applications in the field such as power conversion and protection, voltage regulation, and over-voltage protection. It is typically used in DC-DC converters as a switching power converter, as a voltage regulator and as a over-voltage protection device. This device is suitable for many industrial applications such as telecommunication, automotive electronic circuit and power systems.

• Power supply and voltage regulator: The 1SMA4748TR can be used as a voltage regulator in power supply systems. The device can provide a constant reference voltage, ensuring a reliable and consistent output.
• DC-DC converters: The 1SMA4748TR can be used as a switching power converter. The reverse current and breakdown voltage of the device make it an ideal device for switching power converters.
• Telecommunication: The 1SMA4748TR can be used in various telecom application such as telecommunication gateways, interface systems, and radio communication systems. The device can provide reliable protection against over-voltage and over-current.
• Automotive electronic circuit: The 1SMA4748TR can be used in automotive electronic circuits. The high current and voltage protection capability of the device make it ideal for use in automotive electronic circuit applications.
• Power systems: The device can be used in power systems for over-voltage and over-current protection. The device can provide reliable protection against any spurious surge or over-current.

Conclusion

The 1SMA4748TR is a popular Zener diode. It has a high maximum Zener voltage of 500 volts and a high peak repetitive reverse current of 200 amperes. It is used in many practical applications such as DC-DC converters, voltage regulators, and over-voltage and over-current protection circuits. It is suitable for applications requiring high voltage and high current switching. It is an ideal device for power supply and voltage regulator, telecom, automotive electronic circuit, and power system applications.