SMBJ40CA-M3/52

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TVS - Diodes are a kind of semiconductor devices used for a variety of purposes. The SMBJ40CA-M3/52, in particular, is a Transient Voltage Suppressor (TVS) Diode with a high surge capability, capable of dissipating overvoltages up to 1500 watts peak pulse power at 10/1000 (μs) and 4000 watts peak pulse power in 8/20 (μs). It is designed to protect downstream components and circuits from transients caused by electrostatic discharge, induced lightning, power cross, and other overvoltage events. The SMBJ40CA-M3/52 has an epoxy package, with a lead pitch of 2.5mm.

The function of the SMBJ40CA-M3/52 is to protect circuits from overvoltage and power surges. It has a high peak power capacity of up to 1500 watts at 10/1000 (μs) and 4000 watts at 8/20 (μs). The device is designed to limit the transient voltage by clamping the voltage, while allowing the normal operating voltage signal to pass without affecting the circuit operation. With an excellent thermal resistance, it is also able to absorb substantial energy without interruption and even in repetitive events.

The SMBJ40CA-M3/52 is usually used in a variety of portable consumer electronics, such as laptops, tablets, and cell phones, as well as in automotive applications, including air-bag systems, immobilizers, and alternator systems. It is used in the circuit protection of digital and analog components which are sensitive to power surges, fast transients, and electrostatic discharges. It can also be used in low-voltage power supply circuits, such as STS-MOSFET, photomicrosensors, and other switching circuits.

The SMBJ40CA-M3/52 has two major working principles. The first principle works on the basis of the avalanche breakdown process, which is the same process used by Zener diodes to generate an accurate, stable voltage reference. The device’s structure utilizes this breakdown process to bring about the clamping of any voltage surges, which is then conducted along the diode’s junction. The second principle in which the SMBJ40CA-M3/52 works is the switching principle, which is used for fast current pulses. This principle is performed by introducing an electric field that is capable of rapidly turning the diode’s current on and off.

Overall, the SMBJ40CA-M3/52 is a high surge capacity Transient Voltage Suppressor (TVS) Diode with an epoxy package, lead pitch of 2.5mm, designed to protect downstream components and circuits from transients caused by electrostatic discharge, induced lightning, power cross, and other overvoltage events. It has two major working principles, avalanche breakdown process and switching, which allows the device to limit the transient voltage while allowing the normal operating voltage signal to pass without affecting the circuit operation.

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