SMBJ18CAHM4G

Voltage - Clamping (Max) @ Ipp:	29.2V
Supplier Device Package:	DO-214AA (SMB)
Package / Case:	DO-214AA, SMB
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 150°C (TJ)
Capacitance @ Frequency:	--
Applications:	Automotive
Power Line Protection:	No
Power - Peak Pulse:	600W
Current - Peak Pulse (10/1000µs):	21.5A
Series:	Automotive, AEC-Q101, SMBJ
Voltage - Breakdown (Min):	20V
Voltage - Reverse Standoff (Typ):	18V
Bidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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SMBJ18CAHM4G - TVS Diodes

TVS (Transient Voltage Suppressors) Diodes are electronic components designed to protect delicate electronic equipment from voltage spikes like lightning, and other forms of electrostatic discharge. The SMBJ18CAHM4G Diode is a small component in a two-lead package used to protect circuits from electrical transients such as lightning, or ESD (electrostatic discharge) caused by static electricity.

Application Field

The SMBJ18CAHM4G Diode is mainly used for protection of sensitive electronic components in automotive, industrial, and consumer applications. It is typically used for surge protection or switching power supply circuits. In the automotive domain, the SMBJ18CAHM4G diode can be found in the ignition and electronics systems on modern vehicles. On the consumer side, the diode can protect audio/video equipment, communication systems, and computing products from lightning and electrostatic discharge (ESD) hazards.

Working Principle

The SMBJ18CAHM4G Diode is an active device that monitors the signal levels on the input side and is capable of conducting a current across the terminals in order to protect other components in the system. It works by detecting a high voltage on the input side and then allowing current to flow through the diode, creating a voltage limiting circuit that reduces the peak voltage of the spike. The diode acts as a shield for devices connected downstream by diverting the overvoltage current to a safe ground. In terms of protection, the diode has a non-linear voltage-current response. It has breakdown and avalanche ratings that determine its ability to dissipate energy and protect the system from unwanted physical damage. The diode also has a saturation voltage, which is the boundary between the ava

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