SMAJ12CHE3/61

The SMAJ12CHE3/61 is a surface-mount TVS diode which functions as a Transient Voltage Suppression (TVS) device. This package contains one diode, with an ultra-small form factor having a low profile of 0.4mm. This diode is commonly used in PCBs as it fits in small spaces without causing strain or overcrowding.

The SMAJ12CHE3/61 diode is specially designed to protect sensitive electronic components and circuit boards from damaging transient voltages. The device acts as a high-speed clamp when a current transient occurs, splitting the transient’s path to ground and preventing it from damaging the board. It’s able to absorb up to 12A of continuous current and provide shields up to 600W.

The SMAJ12CHE3/61 is often seen in telecommunications technology, as well as automobiles and industrial facilities. They have a reverse standby current of 4μA and a fast response time of 10ns. The device is also able to operate in temperatures ranging from –65°C to +175°C.

The SMAJ12CHE3/61 diode uses an avalanche breakdown principle which allows it to absorb high voltage transients. Its protection follows a two-stage protection mechanism: the first step is a low level of clamping that limits the transit voltage amplitude. The second step allows for high current clamps to limit the surge energy. The device saturates safely and quickly to absorb the energy from high voltage transients, preventing them from damaging the PCB.

The SMAJ12CHE3/61 is made with a low-power, low-impedance design and features a semiconductor substrate between the cathode and anode. This design helps to reduce thermal derating, contributing to a long life for the diode. The device also has IEC 61000-4-2 compliance, meaning it is resistant to ESD and transient electromagnetic fields.

In conclusion, the SMAJ12CHE3/61 is an ultra-small, low profile TVS diode which is used to protect sensitive electronic components from transient voltages. It has a low power, low impedance design and a two stage protection mechanism, allowing it to be used in many applications including telecommunications, automotive, and industrial sites. As it is resistant to ESD and electromagnetic fields, this device provides reliable protection against transients.