SA100HE3/54

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The SA100HE3/54 Transient Voltage Suppressor (TVS) Diode from Littelfuse is designed to protect voltage sensitive components from destructive voltage transience. It is a unidirectional diode that can immediately clamp and limit the voltage, thus protecting the sensitive components from high energy transient voltage spikes. The SA100HE3/54 diode is lead-free, RoHS and REACH compliant.

This type of diode provides protection from electrical voltage transients, also known as spikes. Spikes can be caused by various sources such as lightning, ESD, electromagnetic interference, power surges, noise pulses, and static electricity. By using TVS diodes, companies can ensure their sensitive components don’t experience destructive electrical transients, thus prolonging the service life of the device.

The SA100HE3/54 has a maximum operating voltage of 100 volts. It is usually packaged in SMA, SMB, SMC, and SMD packages and is also available in a surface mounting version. This type of diode has a peak power dissipation capability of 1.5 kilowatts (kW) and a peak pulse current of 4000 amperes. It is also designed to protect against voltage transients up to 17 volts.

The SA100HE3/54 acts as a one-way valve and rapidly clamps and limits the voltage that travels through it before it can damage any of the components. This is done by the diode’s internal “avalanche breakdown (Zener breakdown)” mechanism, which is a phenomenon in which the reverse bias voltage will exceed the breakdown voltage of the diode and allow large currents to flow. As the voltage is clamped, the diode’s cathode-anode voltage is kept at a safe level, thus protecting the components from any overvoltage.

The SA100HE3/54 is used in a variety of applications such as medical equipment, automotive equipment, telecommunications, and consumer electronics. Due to its fast response time, it is used in applications where there is a risk of high-energy transients, such as in lightning protection systems. It is also used in automobiles, specifically in the protection of ECUs (electronic control units) from high voltage transients caused by the spark plug.

The SA100HE3/54 is a key component in providing protection against power surges and overvoltage. It is reliable, fast-acting, and can easily be mounted on a printed circuit board using surface mount technology. It is also lead-free, RoHS and REACH compliant, making it an excellent choice for protecting sensitive components from transient voltage surges.

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