SMLJ70A

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TVS diodes, or transient voltage suppressors, are specialized components designed to absorb the voltage spikes that can otherwise damage or destroy microcontroller- or logic-based electronic systems. The SMLJ70A is a surface-mount transient voltage suppressor diode designed for use in automotive and other high-voltage applications.

The SMLJ70A is a breakdown voltage diode used to protect electronic systems from transients and overvoltage conditions. It works on the principle of a voltage-dependent resistor (VDR), which responds to an increase in voltage by quickly reducing the current flow. This allows the device to absorb energy and prevent damage to the protected system.

The SMLJ70A is designed to operate at voltages up to 70 volts. It has a low on-state resistance, so it provides high protection even in high-voltage applications. It also has excellent pulse protection and can absorb over 1 joule of energy. The device is constructed using a silicon-based substrate, so it is able to operate in temperatures up to 125ºC without degradation.

The SMLJ70A is used in various high-voltage applications, such as automotive power systems, power supplies, and LED lighting. It is also used in other applications such as industrial control circuits, motor controls, telecom, medical equipment, and consumer electronics. In these applications, the device can protect sensitive electronics from observed transients or overvoltage conditions.

The SMLJ70A utilizes a triggered bidirectional diode structure to absorb energy. When a high voltage is applied across the diode, it will start to conduct, increasing the current until the breakover voltage is reached. At this breakover voltage the diode will start to avalanche, generating a trigger voltage to ensure that the current flow does not increase beyond this level. This triggers the avalanche effect, clamping the voltage to a safe level and ensuring the device does not damage the sensitive circuitry.

The SMLJ70A is a reliable and cost-effective transient voltage suppressor diode that can protect your electronics from high voltage transients and overvoltage conditions. It is a reliable device with excellent pulse protection and a wide range of operational temperatures. It is designed for use in a wide variety of applications, such as automotive, industrial, telecom, medical, and consumer electronics, requiring a breakdown voltage of up to 70 volts.

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