SMAJ11A-13-F

Current - Peak Pulse (10/1000µs):	22A
Base Part Number:	SMAJ11
Supplier Device Package:	SMA
Package / Case:	DO-214AC, SMA
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 150°C (TJ)
Capacitance @ Frequency:	--
Applications:	General Purpose
Power Line Protection:	No
Power - Peak Pulse:	400W
Series:	--
Voltage - Clamping (Max) @ Ipp:	18.2V
Voltage - Breakdown (Min):	12.2V
Voltage - Reverse Standoff (Typ):	11V
Unidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Cut Tape (CT)

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TVS - Diodes: SMAJ11A-13-F Application Field and Working Principle

A TVS diode, also known as a transient voltage suppressor, is a specialized type of semiconductor device designed to protect sensitive electronic components from electrical transients and surges. The SMAJ11A-13-F is a particular type of TVS diode manufactured by STMicroelectronics. This diode is designed to protect sensitive circuits from transient overvoltage events and is widely used in applications fom consumer electronics to industrial automation and control systems. This article will look at the application field and working principle of the SMAJ11A-13-F.

Application Field

The SMAJ11A-13-F is a surface-mount bi-directional transient voltage suppressor that offers dual protection from overvoltage transients in the range of -13V to +13V. This diode provides the highest level of protection against strikes up to 5A with a peak voltage of 10,000V. This makes it an ideal choice for protecting electronic circuits in applications like lightning protection, power systems, automotive, telecommunication, and more.The SMAJ11A-13-F is slim in size, with a height of only 0.952mm. It is also RoHS compliant and UL listed, making it suitable for industrial and consumer applications. Additionally, the diode is rated for operating temperatures of -65 to + 150°C, making it suitable for use in extreme temperature environments.

Working Principle

The working principle of the SMAJ11A-13-F is relatively simple. Basically, the diode is made up of two components - an active junction and an integrated passive network. The active junction is a designed to pass current with minimal voltage drop, while the passive network protects against overvoltage. In normal operation, the diode behaves like an ordinary diode, allowing current to flow from anode to cathode.When the voltage exceeds the breakdown voltage, the active junction becomes saturated and the passive network begins to conduct. This shunts the excess voltage away to ground, protecting the circuit from damage. The diode then returns to normal form in the absence of an overvoltage event.

Conclusion

The SMAJ11A-13-F is a highly effective diode for protecting sensitive electronics from transient overvoltage events. It is versatile enough to be used in a wide range of applications, from consumer electronics to industrial control systems. The diode also has a slim profile and an operating temperature range of - 65 to + 150°C, making it suitable for use in harsh environments. In terms of working principle, the diode consists of two components - an active junction and an integrated passive network. The active junction allows current to flow with minimal voltage drop, while the passive network protects against overvoltage.

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