SMBJ58A-Q

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TVS diodes provide protection to electronic components against undesired high voltage transients. The SMBJ58A-Q is a uni-directional TVS diode, designed to protect circuits from high-energy electrical transients. It is most useful in automotive, industrial and communications applications.

The SMBJ58A-Q diode is designed to offer clamping protection at voltages up to 58 V. It has a maximum reverse peak pulse power of 300 W and a maximum clamp voltage of 61.5 volts. The unit is designed to hold Its clamping voltage until the end of the pulse waveform and requires no external components. The SMBJ58A-Q comes with a wide operating temperature range, making it suitable for industrial and automotive applications.

The SMBJ58A-Q works by diverting high voltage transient currents away from electronic components, thus preventing them from being damaged. It consists of two diodes connected in parallel, with one facing in the opposite direction of the other. When the transients increase in voltage, the current starts to flow through the other diode. This creates a voltage clamp, which limits the amount of current that can pass through the diode. As the voltage reaches its steady-state level, the clamping voltage drops back and the diode returns to its original blocked state.

The SMBJ58A-Q can be used to protect a variety of automotive and industrial applications, including supply voltages of 48V, alternators, starter motors, alternator sensors, gearbox control units, ECUs, and other car-related electronics. It can also be used in industrial switch-mode power supplies, power supply subsystems, gas discharge lamps, fuses, and communication circuits. Due to its thermally-enhanced construction, the diode is suitable for high temperature environments, such as in automotive, motorcycles, and HVAC applications.

The SMBJ58A-Q provides an effective protection solution that can protect electronics from a range of transient voltage levels. It offers an operating temperature range of -55 to 150°C, and features a low thermal resistance package, making it suitable for extreme temperature environments. This uni-directional TVS diode is a cost-effective solution for providing reliable protection.

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