SMAJ90

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The SMAJ90 device is an ultra-fast, ultra-low capacitance TVS-Diode used in electronic systems for surge and ESD protection. This device can provide up to 90 volts of protection from voltage transients and ESD events. It is typically used in RS-232, RS-422, and USB applications where fast reaction time, low capacitance, and high clamping voltage is required. This device is a great option for systems that need to be protected in harsh surge environments.

The SMAJ90 is a bidirectional, two-lead surface mount device used for ESD and transient voltage suppressor. It has a very fast response time of less than 1 nanosecond and a capacitance of only 0.7 picofarads. It is packaged in a leadless SOD-123 package that is designed for surface-mount assembly. The SMAJ90 can be connected in reverse polarity, and its low leakage current supports higher power levels.

The device has two distinct modes of action that make it suitable as a surge protector. The first is a TVS-diode that will clamp any voltage transient above its threshold voltage. The second mode is an avalanche diode which allows the device to take a large surge current without damaging itself. The combination of these two technologies makes the SMAJ90 suitable for many applications.

The SMAJ90 is suitable for use in a wide range of applications. It is often used in automotive and industrial applications as well as telecommunications and consumer electronics. Additionally, it has applications in medical systems, aerospace, and defense systems. It can also be used to provide secondary protection in connected systems.

The working principle of the SMAJ90 is simple. In normal operating conditions, the TVS-diode is reverse biased, which maintains the device in its nonconductive, or open, state. When a surge is detected, the voltage across the device increases to the breakdown voltage of the TVS-diode. The device then begins to conduct until the surge energy is dissipated. Once the surge has dissipated, the device returns to its nonconductive state.

The SMAJ90 is an extremely reliable device that is suitable for many applications in which protection from surges and transients is a must. Its fast response time and high clamping voltage make it an ideal choice for applications that must be protected from electrical spikes. Additionally, its small size makes it easy to use in small form factor devices. With its low capacitance and reverse polarity feature, the SMAJ90 is an excellent option for protecting against destructive voltage transients.

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