SMBJ40A-13-F Circuit Protection

Current - Peak Pulse (10/1000µs):	9.3A
Base Part Number:	SMBJ40
Supplier Device Package:	SMB
Package / Case:	DO-214AA, SMB
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 150°C (TJ)
Capacitance @ Frequency:	--
Applications:	General Purpose
Power Line Protection:	No
Power - Peak Pulse:	600W
Series:	SMBJ
Voltage - Clamping (Max) @ Ipp:	64.5V
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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Introduction to SMBJ40A-13-F TVS Diodes

Transient Voltage Suppressor (TVS) Diodes are widely used in order to protect sensitive electronic components from overvoltage. These components are often seen in applications that require overvoltage protection such as the automotive industry, electronic equipment, etc. The SMBJ40A-13-F is one such type of TVS diode, and in this article, its application field and working principle will be discussed in detail.

Application Field of SMBJ40A-13-F TVS Diodes

The SMBJ40A-13-F is a unidirectional TVS diode, meaning that it only conducts when it is forward biased. This makes the device suitable for overvoltage protection of sensitive electronic components. The main application of this type of diode is in automotive electronics such as automotive fuel systems, ignition systems, airbags, and other automotive electronics. In addition, the diode is also used in audio and video equipment, LEDs, and video game consoles.

Working Principle of SMBJ40A-13-F TVS Diodes

The SMBJ40A-13-F is an SMD diode with a voltage rating of 13 Volts and a peak power rating of 3 Watts. It has a maximum peak pulse power dissipation of 4.5 Watt. The maximum operating temperature range of this diode is -55°C to 125°C.The SMBJ40A-13-F works by using a voltage-controlled zener breakdown. When an overvoltage occurs, the breakdown voltage is exceeded, causing the diode to begin conducting current. As a result, the excessive voltage is dissipated as heat within the diode. This prevents damage to the sensitive electronic components that the diode is protecting.

Conclusion

In conclusion, the SMBJ40A-13-F is a unidirectional TVS diode that provides overvoltage protection to sensitive electronics by utilizing a voltage-controlled zener breakdown to dissipate the excess voltage. This diode is commonly used in automotive electronics, audio and video equipment, LEDs, and game consoles.

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