SMDJ30A-HR

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TVS, also known as Transient Voltage Suppression, is one of the most reliable protection solutions available for sensitive electrical components from electro-static discharges (ESD) or transients. TVS diodes are designed specifically to detect and suppress transients, which can occur far faster than traditional fuses and other protective devices. By drawing power from the transient, the diode limits the voltage spike to prevent it from damaging the connected components.

The SMDJ30A-HR is a commonly used TVS diode designed to protect circuits from transients up to 30V. It features a fast response time of less than 1 nsec for common-mode transients, and less than 5.7 nsec for Normal-Mode Transients. It can also suppress a high peak pulse current up to 600Amps. The SMDJ30A-HR is an ideal choice for both high speed and low voltage devices such as automotive electronics, communications equipment, computers, household appliances and industrial equipment.

The SMDJ30A-HR utilizes what is known as a Zener Diode circuit. This is a device that allows current to flow in a forward direction without disruption, but when a current of a certain magnitude begins to flow in a reverse direction, the Zener Diode begins to operate, collapsing the voltage and limiting the current. In the SMDJ30A-HR, a Zener Diode is placed in series with a pair of TVS Diodes to form a bridge-type circuit. This allows the device to turn on and off quickly, keeping the supply voltage at a safe level and preventing the connected load from being damaged by transients.

The SMDJ30A-HR is a robust and reliable solution to protect components from transient surges. It has a wide operating temperature range of -55°C to +125°C and is housed in a SMB package that is compliant with the UL94V-0 requirements. It is the perfect choice for protecting sensitive components from transients and ESD with minimal circuit board space and cost.

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