SMBJ18A R5G

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:	General Purpose
Power Line Protection:	No
Power - Peak Pulse:	600W
Current - Peak Pulse (10/1000µs):	21.5A
Series:	SMBJ
Voltage - Breakdown (Min):	20V
Voltage - Reverse Standoff (Typ):	18V
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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Introduction to SMBJ18A R5G

The SMBJ18A R5G is a TVS (Transient Voltage Suppressors) diode designed to protect electronics and systems against voltage transients and surges. This device offers an excellent combination of unidirectional overvoltage protection, surge stability and very low leakage current for a wide range of temperatures and operating conditions.The SMBJ18A R5G is available in a wide range of voltage and current ratings up to 18V, 500W. Some of the features that make this diode an attractive choice include its wide operating temperature range, low temperature dependency, fast response, low profile, and high surge rating.

Applications of SMBJ18A R5G

The SMBJ18A R5G diode is used to protect electronics and systems from the excessive amount of voltage due to transient surges like lightning strikes, electrostatic discharges, and power glitches. It is also used in electronic circuits to protect them from overvoltage spikes due to external disturbances.The SMBJ18A R5G is widely used in automotive, medical, and consumer electronics applications such as car radios, digital audio systems, electronic control units, printers, LED lighting and more. Furthermore, this diode can be used in powered speakers, power supplies, voltage-sensing circuits, and electrostatic discharge circuits.

Working Principle of SMBJ18A R5G

The SMBJ18A R5G diode works on the principle of voltage clamping. This means that it acts as a voltage-limiting device, limiting the current through the diode and clamping the voltage at a certain level. The clamping voltage is determined by the breakdown voltage of the diode. When the voltage applied to the diode exceeds the diode’s breakdown voltage, the diode will start conducting and limit the current to a level that does not exceed the voltage rating of the diode.In other words, the SMBJ18A R5G acts as a customer-defined voltage limiter for circuits subjected to the damaging effects of transient voltage surges. By limiting the voltage to the diode’s breakdown voltage, the circuit is protected from a potentially destructive surge.

Conclusion

The SMBJ18A R5G diode is an excellent choice for protecting circuits and systems against transient overvoltage surges. It has been designed to provide protection from a wide range of conditions, including electrostatic discharges, lightning strikes, and power glitches. The diode has a fast response time and low temperature dependency, making it suitable for a wide range of applications. Furthermore, it has a wide operating temperature range, a low profile, and a high surge rating, making it suitable for a range of applications. The SMBJ18A R5G diode works on the principle of voltage clamping, limiting the current through the diode and clamping the voltage at a certain level.

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