SMAJ45A-M3/5A

Voltage - Clamping (Max) @ Ipp:	72.7V
Supplier Device Package:	DO-214AC (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
Current - Peak Pulse (10/1000µs):	5.5A
Series:	TransZorb®
Voltage - Breakdown (Min):	50V
Voltage - Reverse Standoff (Typ):	45V
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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TVS - Diodes Application Field & Working Principle - SMAJ45A-M3/5A

SMAJ45A-M3/5A is a type of TVS (Transient Voltage Suppressor) diode. It is designed to protect a circuit from over voltage transients induced by a variety of causes such as direct lightning strikes, nearby inductive transients, or load dump on vehicles.When exposed to a sustained surge, overvoltage, or electrostatic discharge (ESD) event, the TVS diode\'s junction will transition rapidly. This switch-like behavior will divert a surge current away from vulnerable circuit elements and into the diode while also limiting the dangerous voltage. By doing so, the TVS diode prevents damage and interference to the circuit from destructive surges while still allowing passage of the desired signal.Specifically, the SMAJ45A-M3/5A is a 600W uni-directional TVS diode designed to protect sensitive electronic components from voltage transients that occur due to both switching and ESD events. This diode provides enhanced 8/20μs waveform protection and low reverse leakage current and display fast response, low leakage and low clamping voltage. This diode\'s construction ensures high surge capability, low let-through voltage, and high reliability. This device also features an extended standoff voltage range for better protection.The SMAJ45A-M3/5A diode can be used in various applications such as in consumer electronics, data lines, computers, and telecom equipment for surge protection applications. It can also be used in automotive electronics, charging stations, and other industrial and automotive applications.When applying the SMAJ45A-M3/5A diode, it is important to consider the following parameters: fault current, surge current, peak pulse current, VBR breakdown voltage and maximum ambient working temperature. These should all be within the specified range of the part. It is also important to consider the surge waveforms being incurred, as well as the operating environment of the part.The overall working principle of this diode is relatively simple. When exposed to a surge or transient, the diode\'s junction will transition from a low resistance state to a high resistance state, basically switching off the unwanted surge current and diverting it to the diode, thus protecting the circuit.In summary, SMAJ45A-M3/5A is a type of TVS diode designed to protect against transients and surges both in consumer and automotive applications. Its junction will transition rapidly when exposed to an overvoltage, ESD event, or surge, diverting any surge current away from vulnerable components and into the diode while also limiting dangerous voltage. Various parameters of the device need to be considered in order for it to work optimally.

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