1KSMB12CAHR5G Circuit Protection

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TVS (Transient Voltage Suppressor) diodes, which are also known as suppressors, are solid state electronics used in electrical circuits to protect them against over voltage transients, surges or electrostatic discharges (ESD). The 1KSMB12CAHR5G is a TVS diode specifically designed to provide improved ESD protection of connected equipment. It is suitable for use in ESD protected areas of consumer applications up to IEC 61000-4-2 +/- 15kV (Air) and +/- 8kV (Contact).

The 1KSMB12CAHR5G diode features a low clamping voltage and is designed to be used in conjunction with protective circuitry (ESD protection), making it ideal for electronic applications where a high level of ESD protection is required. It also offers excellent surge protection for data lines, power supplies, and other applications. The diode has a low capacitance and a very fast response time, making it suitable for protecting sensitive electronic components from ESD or from high frequency surges.

The 1KSMB12CAHR5G diode can be used in a variety of applications, including cell phone, digital camera, automotive, computer, audio, and medical equipment. It is specifically designed to provide improved protection from the destructive power of ESD strikes and transients, both in system and device level use cases. The diode is built to withstand a rated surge of 5A (8/20μs waveform) and this is when the series resistors are properly selected.

To understand the working principle of this type of TVS diode, it is important to understand the concept of avalanche breakdown. Avalanche breakdown is the process that occurs when two semiconductor junctions, such as p and n-type semiconductors, are connected together and a large enough electric field is applied between them. When an avalanche breakdown occurs, a large current spike is produced which can damage components that are connected to the diode. The 1KSMB12CAHR5G is designed to protect connected components from these current spikes, by clamping the voltage to a set level.

When the voltage on the diode reaches the specified clamping voltage, the avalanche breakdown occurs. The current generated by the avalanche breakdown is absorbed by the diode and then converted into heat, dissipating the energy and protecting the connected component.

This diode is designed to respond to transient events quickly and reliably. The fast response of this diode ensures that the connected components will be protected from destructive ESD and other transients. The diode can be used for a wide variety of applications where ESD protection is critical.

In summary, the 1KSMB12CAHR5G is a TVS diode specifically designed to provide improved ESD protection of connected equipment. It features a low clamping voltage and is suitable for use in consumer applications up to IEC 61000-4-2, as well as for surge protection applications. The diode is designed to respond quickly and reliably to transient events, ensuring that the connected components are protected.

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