SMBJ4764A/TR13

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The SMBJ4764A/TR13 is a single zener diode rated at 4.7 volts and 63 milliamps, offering excellent stability over both operating temperature range and long term operation. It is electrically equivalent to the STMicroelectronics SMBJ4761A/TR13 and Vishay VS-MBE4764 series. It is designed to protect sensitive electronics from high voltage transients and offer superior performance in voltage regulation applications.

The SMBJ4764A/TR13 features low capacitance and low leakage current. This ensures stable voltage regulation and low power loss in DC power converters and other voltage regulation applications. It also has very low reverse recovery time, resulting in less switching losses for power supplies running in the kHz range. The diode\'s maximum power dissipation of 500mW is sufficient for most applications.

In voltage regulation applications, the SMBJ4764A/TR13 functions as a voltage clamp, protecting sensitive electronic components from transient overvoltage spikes. When the input voltage reaches the device\'s peak inverse voltage, the diode begins to conduct, limiting the voltage at the output and absorbing the energy of the transient spike. In this way, the device helps protect sensitive components on the output side of the circuit.

The diode can also be used in DC-DC converters to regulate the output voltage. In this application, the device operates in a more continuous manner, maintaining the output voltage at a fixed level. It basically acts as a voltage reference, maintaining the output voltage regardless of changes in the input voltage. By ensuring a stable output voltage, the diode allows the DC-DC converter to maintain power conversion efficiency and prolong the life of the output components.

The SMBJ4764A/TR13 also features fast rising and falling switching time, making it a suitable choice for power electronic applications that require high frequency operation. Its low capacitance and low leakage current make it suitable for use in low-noise, high-efficiency circuits. The device also features low thermal resistance, allowing it to operate in a wide temperature range (–55°C to 150°C).

All in all, the SMBJ4764A/TR13 is an excellent choice for voltage regulation and transient protection applications. Its fast switching times, low capacitance and low leakage current make it suitable for high-frequency, low-noise, and high-efficiency applications. The device’s wide temperature range, low thermal resistance and excellent stability make it a dependable choice for protecting sensitive electronics from transient overvoltage spikes.

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