SMDJ43A-T7

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TVS (Transient Voltage Suppressor) diodes are devices used to protect electronic components, circuits and systems from extreme voltage spikes resulting from electrostatic discharge (ESD) and other voltage over-voltage transients. The SMDJ43A-T7 is one type of TVS diode that is capable of providing protection to sensitive devices and systems against dangerously high surge voltage.

The SMDJ43A-T7 is a unidirectional diode that offers a maximum repetitive peak reverse voltage of 43 Volts (VRRM) and a maximum working peak pulse power of 600 Watts (Ppk). It is rated as a 6.5A device with a peak pulse current of 11A (ITM) and a repartitive peak clamping voltage (VPR) of 79 Volts. The SMDJ43A-T7 has a capacitance of 190pF at 1MHz and a reverse recovery time of 1.28uS. With fast response time and low leakage current, the SMDJ43A-T7 proves to be an ideal device for both commercial and industrial applications.

The SMDJ43A-T7 is primarily used in applications that require high-level surge protection and low clamping characteristics. This includes printed circuit boards, laptop computers, and other portable electronics. These devices are also used in automotive systems such as electronic control units (ECUs), powertrain control modules (PCMs), engine control modules (ECMs), and ABS systems.

The working principle of the SMDJ43A-T7 is based on a vacuum process. When an over-voltage transient pulse is applied, this device triggers a dead short across the circuit to ensure its protection from over-voltage transients. The structure of the SMDJ43A-T7 consists of a junction between the anode and cathode, which can withstand a certain level of surge voltage from the over-voltage transient pulse. When the surge voltage comes into contact with the junction, the current will be diverted or clamped to ground. Thus, the device is able to reduce the over-voltage surge and protect the system from any further damage.

The SMDJ43A-T7 is also temperature-resistant and can withstand extreme temperatures of up to +175 degrees Celsius (+347 degrees Fahrenheit). In addition, it features a low reverse leakage and fast response time that make it ideal for faster systems that require more precise timing.

In conclusion, the SMDJ43A-T7 is a unidirectional diode specifically designed to provide over-voltage protection in various applications. It has a peak pulse current rating of 11A, peak repetitive reverse voltage of up to 43V, and a peak power of 600 Watts. The SMDJ43A-T7 is capable of withstanding temperatures of up to +175 degrees Celsius and is equipped with low leakage current and fast response time. Hence, this device is well-suited for protection of sensitive devices and systems against hazardous levels of surge voltage.

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