SMBJ40A

Voltage - Clamping (Max) @ Ipp:	64.5V
Supplier Device Package:	DO-214AA (SMBJ)
Package / Case:	DO-214AA, SMB
Mounting Type:	Surface Mount
Operating Temperature:	-65°C ~ 150°C (TJ)
Capacitance @ Frequency:	--
Applications:	General Purpose
Power Line Protection:	No
Power - Peak Pulse:	600W
Current - Peak Pulse (10/1000µs):	9.3A
Series:	SMBJ
Voltage - Breakdown (Min):	44.4V
Voltage - Reverse Standoff (Typ):	40V
Unidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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The SMBJ40A is a popular transient voltage suppression device in the TVS diode market. It is designed to protect sensitive electronic equipment by diverting potentially damaging voltage spikes and surges such as those caused by lightning and power disturbances. The SMBJ40A is suitable for a variety of applications including automotive, communications, networking, consumer electronics, and industrial electronics.The SMBJ40A is an unidirectional low power TVS diode with a peak pulse current rating of 40 Amps. The device is constructed with two short, thick state-of-the-art avalanche breakdown junctions, which allow it to absorb unusually high surge currents compared to other similar devices. The SMBJ40A is available in a DO-214AA package, which is an axial-lead configuration measuring 2.5mm x 4.3mm x 5.1mm.The SMBJ40A is designed to protect sensitive equipment from excessive transient voltage levels. In order to do this, it continuously monitors the incoming voltage and diverts any voltage that exceeds its rated breakdown voltage of 40 volts. This is accomplished by triggering an avalanche breakdown event. The device works by activating its internal sensor when the voltage reaches its breakdown voltage level. Once activated, the sensor triggers an avalanche breakdown mechanism that causes the voltage to drop sharply. This sudden drop in voltage provides protection to the electronic device by preventing the voltage from exceeding its rated breakdown voltage level.The device also includes several other features that make it a well-suited choice for various applications. It features a low capacitance of 11pF, making it ideal for high speed applications. It also has an operating temperature range of -55°C to 150°C, allowing it to be used in a wide range of environments and applications.In addition, the SMBJ40A is designed to have low clamping voltage over its entire operating temperature range. This is achieved through its unique construction and the careful selection of the construction materials. The device is designed with two short, thick state-of-the-art avalanche breakdown junctions which allow it to provide superior performance over other comparable models. The design also means that the device has minimal capacitance and can handle high current pulses with no thermal effects.The SMBJ40A is a popular and reliable choice for transient voltage protection in a wide range of applications. Its superior features make it ideal for protecting sensitive electronics from excessive voltage spikes and surges. Its low clamping voltage, low capacitance, and wide operating temperature range make it suitable for high speed and high temperature applications. Its rugged construction ensures that it will provide consistent protection in any environment.

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