P4SMA82CAHR3G Circuit Protection

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TVS – Diodes are wide range of protection components, used to protect the circuits from the irregularities caused due to extreme ESD (electro-static discharge), EFT (electro-magnetic interference) and transient voltage fluctuations. One such Diode, the P4SMA82CAHR3G, is used for protecting various devices, from small consumer electronic devices to high-end industrial applications, for its excellent electrical functioning.

P4SMA82CAHR3G, a non-closure, planar standoff, bi-directional device, is mainly used in protecting protection device interface against transmission and switching noise, in telecom, industrial, and automotive applications. The device is designed to offer extremely low clamping voltage and low leakage during both slow and pulsed power functioning conditions. The operating temperature range from -55°C to 125°C makes the device suitable for high temperature operation. With an excellent transient protection capability, the P4SMA82CAHR3G can protect the connected device against lightning strikes, electro-static discharge, and voltage irregularities mentioned previously.

The working principle of the P4SMA82CAHR3G is mainly based on the breakdown mechanism applied in Zener diodes. The device is installed to rectify the high-voltage irregularity, such that the surge current is dissipated. This breakdown voltage is usually around 5.2V for the P4SMA82CAHR3G, which is slightly higher than the Zener breakdown voltage. As the device works on the avalanche breakdown mechanism, it is capable of sustaining the pulsed currents and switching noise due to its lower typical junction capacitance compared to a Zener diode

The device is capable of handling extreme over-voltage transients and surges. The type of the device is unilateral, which dissipates the induced surge current instantly, thus eliminating the chance of damage to the connected equipment. Due to its ultra low leakage and excellent clamping voltage levels, the device can provide protection for the connected circuit, against the over-voltage transients and spikes in a variety of application conditions like automotive, industrial, telecommunication and consumer electronics.

The P4SMA82CAHR3G is available in various packages sizings like 5mm and 7mm to offer easy device incorporation in applications or systems where space is a concern. The device is usually employed at both application interface entry points and at specific points of vulnerable circuit paths. The combination of both these points can offer improved protection to the connected system. The device is also highly compatible with printed circuit boards as the device package allows easy surface-mounted configurations.

Apart from its wide application range, the P4SMA82CAHR3G has other distinct advantages as well. The device is highly efficient andlong-lasting, compared to other protection devices. Moreover, the compact packaging, low reverse leakage capability, and superior transient clamping make it an ideal voltage surge protection device for any system.

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