SMA5J8.5-E3/61

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TVS - Diodes, like SMA5J8.5-E3/61, have numerous applications and are used for a variety of purposes. One of the main functions of TVS diodes is to provide protection from surge currents. They are capable of withstanding high peak power levels without creating a dangerous level of heat. They are also used to provide protection from electrostatic discharge (ESD). This is an important device that helps to protect electronic circuits from damage caused by static discharge.

What makes SMA5J8.5-E3/61 particularly useful is its ability to be used in a wide variety of applications. This device can be used in automotive, industrial, medical, and consumer applications. It is also able to provide a high degree of protection from over-voltage. In addition, it is extremely reliable and can withstand temperatures ranging from -40 to 105°C.

The working principle of TVS - Diodes, such as SMA5J8.5-E3/61, is surprisingly simple. This type of diode is made up of two components; a Zener diode and a breakdown voltage suppression diode. When the voltage reaches beyond the Zener voltage, the diode is switched from a forward biased to a reverse biased state. This switch action then diverts the current away from the protected device and into the diode itself, reducing the peak current levels.

The Zener voltage is set at 5.8V for the SMA5J8.5-E3/61. This means that any voltage above 5.8V will be diverted away from the protected circuit. The junction temperature of the diode must remain below a maximum of 145°C, which is why it is so important to use an appropriate heat sink. Failure to do so could result in the junction temperature exceeding the specified maximum and causing permanent damage to the diode.

The breakdown voltage for SMA5J8.5-E3/61 is 8.5V. This is also the clamping voltage, which means that any voltage above 8.5V will be clamped and the current will be diverted away from the protected circuit. In addition, when the over-voltage condition is removed, the diode will automatically reset and the circuit will be back to its normal operating state.

The maximum power dissipation for SMA5J8.5-E3/61 is 1.3W. This means that it can handle a maximum power of 1.3W before it needs to be cooled with a heat sink. It is also important to note that the device can only handle the maximum over-voltage for a period of 10us to 500ms. Any longer and the device will be damaged.

In summary, TVS - Diodes, such as SMA5J8.5-E3/61, are an important component in protecting sensitive electronic circuits from damage caused by over-voltage and surge currents. The simple yet effective protection of this device makes it an ideal candidate for use in a variety of different applications. Its ability to provide a high degree of insulation and its reliability make it one of the most popular protection devices available.

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