SMCG75-E3/57T

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TVS – Diodes are semiconductor devices used in transient voltage suppression (TVS) protection. They are designed to protect connected devices and systems from dangerous voltage spikes, transients, power surges, inductive spikes, electrostatic discharge (ESD) and electrical fast transients (EFT).

The SMCG75-E3/57T is a high-performance, low-capacitance TVS diode array that is designed to provide robust discrete protection solutions against ESD and EFT voltages typically associated with RS-232, RS-422 and RS-485 signals. The diode array consists of three bidirectional TVS arrays configured in the standard µSMC-2A and µSMC-2B. It is capable of handling surge pulse powers up to 17.5 kW (8/20 µs).

In terms of its application field, the SMCG75-E3/57T is suitable for digital lines (RS-232, RS-422 and RS-485) used in industrial automation systems, measurement systems, medical systems, machine interconnection, and other special applications.

Regarding the working principle, the device works by clamping and redirecting the energy of a voltage spike induced between its two electrodes. A surge or transient voltage is presented at the inputs of the diode as a result of which it turns off these inputs. The device is designed to redirect the surge current from one electrode to the other. When a voltage is applied to the electrodes, the diode shortens the circuit and current flows through it.

The SMCG75-E3/57T has a fast switch-on and switch-off time, meaning it can direct a high current and quickly react to voltage surges in order to protect connected systems from damage. The device is also designed with low capacitance to minimize signal distortive effects and to protect line signaling protocols from losing data. The device also features two protective channels that are triggered independently and can be driven as the two-line common-mode surge protector.

To sum up, the SMCG75-E3/57T is a high-performance, low-capacitance TVS diode array that is designed to provide robust discrete protection solutions against ESD and EFT voltages. It is applicable in digital lines (RS-232, RS-422 and RS-485) used in industrial automation systems, measurement systems, medical systems, machine interconnection, and other special applications. The device works by clamping and redirecting the energy of a voltage spike induced between its two electrodes, and features fast switch-on and switch-off time, low capacitance to minimize signal distortive effects, and two protective channels triggered independently.

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