P6SMBJ39C

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TVS diodes, or Transient Voltage Suppressor Diodes, are semiconductor devices specifically designed to protect electronic circuits from voltage overload and/or transients, of either polarity, such as those caused by static electricity, lightning, switching circuits, etc. These devices, such as the popular P6SMBJ39C are of the same general construction as GPPs, but incorporate a high level of ESD suppression. They are usually rated to a rated Standoff Voltage, meaning the maximum continuous voltage (RMS or peak) at which the device can operate, and another rating called Peak Pulse Power, which is the power dissipation (in Watts) for an 8/20μs pulse.The P6SMBJ39C is a 3-pin surface-mount (SMD) diode with a rated Standoff Voltage of 39V. It has a maximum Reverse Standoff Voltage of 39V, and a Peak Pulse Power of 600W. The device also has a low reverse leakage current of only 5μA at the rated Standoff Voltage (V R ). The device is rated for an operating temperature range of -55°C to 150°C.The P6SMBJ39C TVS diode is commonly used in applications such as automotive electronics, industrial electronics, security systems, consumer electronics, telecom systems, and data communication equipment. The low leakage current and the high Standoff Voltage of the diode effectively protect delicate and sensitive circuits from transient events. The P6SMBJ39C not only offers superior protection against ESD strikes, but can also withstand relatively high voltage transients (up to 600W) and unexpectedly high voltages due to induced signals and noise.The device operates by clamping the voltage level to the Standoff Voltage. When the supply voltage drops below the specified level, the reverse breakdown voltage of the diode will be triggered, allowing the diode to pass current in the reverse direction. This safely reduces the amount of voltage seen by the sensitive components of the circuit. For further protection, multiple diodes can be placed in series and/or in parallel, creating additional filtering action.The temperature coefficient of the P6SMBJ39C is relatively low, keeping the diode\'s breakdown voltage within a 2% tolerance throughout its rated operating temperature range. This helps minimize temperature related instability of the device and keeps the overall circuit protected from any unexpected voltage spikes.In summary, the P6SMBJ39C is an ideal device for protecting sensitive electronic circuits from ESD strikes, transients, and other voltage-related hazards. It offers a low reverse leakage current, a temperature coefficient of less than 2%, and a peak pulse power rating of 600W. It is mainly used in automotive, industrial, security, consumer electronics, and telecommunications applications, where robust voltage protection is required.

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