SMBJ180

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The SMBJ180 is a Transient Voltage Suppression diode (TVS). It is a unidirectional device designed to protect sensitive electronic equipment from large voltage spikes or transients. It is typically used in automotive, telecommunications and computer markets, although they may also be used in other applications.

The SMBJ180 is composed of two elements – a Zener diode and a PN junction diode. When transient occurs, the Zener diode begins to conduct, clamping high voltage and limiting the rise time of transient. As the transient voltage rises further, the PN junction diode enters avalanche breakdown and prevents any further rise in voltage. The device is reverse-biased until a high enough voltage is applied to cause the Zener to enter into conduction. As soon as the voltage drops below the Zener voltage, the PN junction ceases to conduct, allowing the voltage to return to its pre-transient value.

The SMBJ180 is designed to absorb excessive transient voltages and suppress it up to 180V. It is rated for a peak pulse power of 1500 watts and has a time-to-fail rating of 1µs. It is available in a variety of packages, including DO-214AB, SMA, and SMAJ – all of which are through-hole type. This makes them easier to assemble on circuit boards.

The SMBJ180 has a small temperature coefficient and high commuting frequency. In terms of power dissipation, the maximum peak power is 1500W, making it suitable for suppressing transients in powered circuits. In terms of thermal performance, the thermal resistance of the SMBJ180 is very low, allowing it to be used in high-power, high-temperature applications.

The SMBJ180 has a response time of 10-30ns, making it suitable for applications requiring fast responses to transients. Moreover, thanks to its excellent dynamic characteristics, the SMBJ180 is able to conduct up to 180V with a low leakage current. This ensures that the Transient Voltage Suppression devices are able to protect delicate electronics without creating too much load.

Because it is a unidirectional device, the SMBJ180 offers additional features such as improved surge protection, overvoltage protection and transient voltage suppression. This makes it an ideal device for applications such as power supply protection, voltage protection, signal line protection, and load protection. Thanks to its stability, the SMBJ180 is also an attractive device for applications such as data lines and other communication applications.

Overall, the SMBJ180 is an excellent Transient Voltage Suppression diode that offers excellent features in terms of power dissipation and stability. It is suitable for a wide variety of applications where fast response and reliable protection is required. It is a cost-effective solution that can be used to protect sensitive electronic equipment from transient voltages and other related issues.

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