5.0SMDJ17A Circuit Protection

TVS - Diodes

TVS (transient voltage suppressor) diodes are semiconductor devices used to protect sensitive electronic circuits from high voltage transients such as ESD (electro static discharge), EFT (electromagnetic field transients) and electrical lightning. They are specifically designed to clamp the voltage of an incoming surge or transient below a specified voltage by diverting it to the ground. The main television application of the TVS diodes is to protect from these transients and conduct them safely to the ground.

5.0SMDJ17A Application Field and Working Principle

The 5.0SMDJ17A is a unidirectional TVS diode, designed to protect from ESD and electrical transients. It has an operating range of 5.0V - 17.0V with a peak pulse power rating of 17A. It has a typical capacitance of 4300 pF, a typical ‘on’ resistance of 0.0180 Ohms, and an operating temperature range of -65°C to +150°C.

The 5.0SMDJ17A is typically used in applications that require protection against voltage transients from ESD and electrostatic discharge. It can be used in a variety of devices such as computers, mobile phones, cameras, and other larger electronic devices. It is also used in automotive and industrial applications, as it can handle the high voltage and high power loads.

The device operates using a voltage clamp principle; when there is an incoming transient voltage, the circuit is “clamped” or “bounded”, meaning the voltage is not allowed to exceed the specified voltage level. The device is designed to be able to absorb the energy of the transient and conduct it to the ground, thus protecting the circuit from damage.

In addition to the voltage clamping principle, the 5.0SMDJ17A also uses a diode clamp, a device which absorbes the incoming surge and redirects it to the ground to safely dissipate the energy. The diode clamp also acts as a current limiting device, reducing the amount of current that can pass through the device, thus protecting the circuit from damage.

In summary, the 5.0SMDJ17A TVS diode is used mainly in applications that need protection from voltage transients from ESD and electrical surges. It operates using Voltge Clamping and Diode Clamp principles, to protect the circuit from damage. Its high voltage and power rating makes it suitable for a wide range of applications, from cellular phones to large industrial systems.