SMBJ4729AE3/TR13

The SMBJ4729AE3/TR13 is a single Zener diode intended for use in a variety of electronic applications. It is a silicon Zener diode operated in a controlled avalanche breakdown mode with the rating and characteristic curves of the specified design fabrication process. The main features include a low forward voltage drop, high temperature and junction stability, a wide range of voltage ratings and an operating temperature range up to 150 °C.

Zener diodes are used in electrical circuits to provide a stable voltage reference or to protect the circuit from an overvoltage condition. In the normal forward-biased diode, when the forward voltage is higher than the threshold junction voltage, electrons enter the depletion layer which becomes inverted and starts conducting. This is known as forward bias mode. When the Zener diode is reversed-biased, it acts as an open circuit, so the current through it is zero. When the reverse bias voltage reaches a certain level, called the Zener breakdown voltage, the electric field across the barrier is strong enough to break the covalent bonds of the semiconductor material, and current begins flowing through the junction. This is the so-called Zener effect, which is essential for a Zener diode to function.

In the case of the SMBJ4729AE3/TR13, the main application fields are voltage reference and reversebias protection circuits. It can be used in applications such as microcontroller power supplies, power consumption measurement systems, or other circuit protection or voltage reference applications.

The SMBJ4729AE3/TR13 has a reverse breakdown voltage of 4.7V. The maximum power dissipation is 350 mW and the total capacitance is 4 pF. It has a peak reverse standing voltage (VRRM) of 6V and a maximum forward voltage drop of 1.2V. It also has an IFSM rating of 400A. The diode can be used up to a maximum operating temperature of 150°C.

In summary, the SMBJ4729AE3/TR13 is a single Zener diode with a voltage rating of 4.7V and a maximum power dissipation of 350 mW. It has a wide range of applications such as voltage reference, microcontroller power supplies, power consumption measurement systems and circuit protection. Its operating temperature range is up to 150°C and its maximum forward voltage drop is 1.2V.