SMAJ250A-H Circuit Protection

The SMAJ250A-H is a Transient Voltage Suppressor Diode (TVS Diode) that combines a silicon avalanche diode (known as a Zener diode) with a thyristor. This diode is used to protect circuits by clamping and shunting transient voltages. It is designed to safely provide protection from electrostatic discharges (ESD) of up to 15kV, lightning induced surges, and other voltage transients.

The SMAJ250A-H has two electrodes, an anode and a cathode. The anode is the positive voltage electrode, and the cathode is the negative voltage electrode. When the anode is exposed to a voltage greater than the breakdown voltage, the device triggers an avalanche breakdown, in which the current increases rapidly and in turn triggers the thyristor switch. The thyristor then shorts the anode and cathode and clamps the voltage at the device\'s peak pulse power rating. It also discharges any residual energy in the system.

The SMAJ250A-H has a peak pulse power rating of 250 watts. It can also withstand a repetitive peak reverse voltage up to 6.8 volts. Its maximum operating temperature is 175 degrees Celsius and maximum clamping voltage is 16.4 volts. The device features a low capacitance of 37.5 pF, making it suitable for high-speed applications, such as data communications.

SMAJ250A-H diodes are used most commonly in electronic applications where protection from ESD or lightning strikes is needed. They can be used in line-card protection, CCTV and automotive applications, as well as communications and networking equipment. The device can also be used in consumer electronics designs, such as cell phones, laptop computers, and more. Additionally, the SMAJ250A-H can be used to provide protection for sensitive components, such as micorprocessors, digital signal processors, and amplifiers.

In conclusion, the SMAJ250A-H TVS Diode offers protection from a wide variety of transient voltage sources and is suitable for use in many applications. It can be used to help protect components from ESD, lightning strikes, and other voltage spikes. The device has a very low capacitance, which makes it ideal for high-speed applications. The SMAJ250A-H is an excellent choice for anyone looking for protection from voltage transients and surges.