SMCJ36A-E3/57T Circuit Protection

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TVS diodes are one of the most common electronic components that are used in an ever increasing variety of applications, from basic power supply protection to protecting critical high-speed digital data lines. The SMCJ36A-E3/57T is one such diode, used for protecting systems and components from high-energy transients. This article will discuss the application field of this TVS device, as well as its exact working principle.

Application Field

The SMCJ36A-E3/57T TVS diode is specifically used for protecting port-to-port isolation in telecom systems. This particular diode can be used in Ethernet, EIA, RS232 and CANBus applications, offering a low capacitance level of 0.6 picofarads (pF) at 100 Volts (V). It has a very high surge capability of 36 Amps (A), making it capable of generating impressive surge and pulse clamps even in the harshest of conditions.

The SMCJ36A-E3/57T is also used in many automotive applications since it provides reliable noise protection. It has a wide working temperature range of -65ºC to 175ºC, making it suitable for use in a variety of automotive and industrial environments. Furthermore, it has a peak power rating of 15 W at 25 ºC, making it suitable for severe environment applications like primary and secondary lightning protection.

Working Principle

The TVS diode is designed to absorb and dissipate large amounts of energy that is generated due to short-term voltage transients or surges, such as lightning strikes and static discharge. The SMCJ36A-E3/57T device utilizes a semiconductor junction diode, also known as a “multi-layer” diode, to absorb and dissipate the high-energy surges. The semiconductor junction consists of layered semiconductor materials, which increases the diode’s ability to absorb electrical energy. When a transient voltage pulse appears on the diode’s terminal, the diode turns on, shunting the energy away from the protected circuit and dissipating it in the form of heat.

The SMCJ36A-E3/57T is designed for more severe applications than other TVS diodes, having a higher clamping voltage and larger sparks gap. As such, the SMCJ36A-E3/57T device can absorb and dissipate more energy than other diode models. This makes it suitable for primary and secondary lightning protection, as well as for protecting port-to-port isolation in telecom systems.

In summary, the SMCJ36A-E3/57T TVS diode is designed specifically for protecting port-to-port isolation in telecom systems. It also has a wide operating temperature range, making it suitable for use in many automotive and industrial applications. The diode utilizes a multi-layer semiconductor junction diode to absorb and dissipate high-energy transients, and has a very high surge capability of 36A.

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