SMBJ6V5CA

Current - Peak Pulse (10/1000µs):	53.6A
Base Part Number:	SMBJ6V5
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
Series:	SMBJ
Voltage - Clamping (Max) @ Ipp:	11.2V
Voltage - Breakdown (Min):	7.22V
Voltage - Reverse Standoff (Typ):	6.5V
Bidirectional 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: SMBJ6V5CA Application Field and Working Principle

Transient Voltage Suppressor Diodes, more commonly known as TVS Diodes, are an important line of protection against voltage and current spikes and surges. Their rapid response times and large standoff voltages make these devices ideal for protecting delicate, high-voltage circuits. Among the most common TVS Diode devices is the SMBJ6V5CA, an unidirectional, surface-mount device designed to protect circuits from voltage transients associated with inductive loading and other spikes up to 6.5 volts. 

Application Field

The SMBJ6V5CA is ideal for use in a variety of different applications, including protection of sensitive system components, such as printed circuit boards, disc drives, displays, and other electronic circuits, from overvoltage transients caused by poor latching of switching transients, inductive loads, or other sources. It can also be used in medical, automotive, and home appliance applications. 

Working Principle

The SMBJ6V5CA functions by quickly diverting or suppressing the transient current and voltage away from sensitive components or systems. It is a re-flow solderable, epoxy-free device. Its working principle can be explained as follows.When the peak voltage of the transient exceeds the maximum working voltage of the device (6.5 volts) or exceeds some other threshold voltage, the SMBJ6V5CA will start conducting. This will create a low-impedance path for the excess voltage, allowing it to be diverted away from the protected components. As the transient current travels through the diode, the internal p-n junction quickly warms up, and releases excess charge carriers into the surrounding area. This helps to dissipate the energy of the transient voltage, thus preventing the protected components from experiencing any undue stress. The SMBJ6V5CA also features a temperature coefficient of reverse leakage current of no less than -22 ± 2mV/°C over its operating temperature range. This added protection helps to ensure that the device remains operational even in extreme temperatures.

Conclusion

In summary, the SMBJ6V5CA is a versatile, reliable, and efficient device for use in suppressing transient voltages and currents. It has numerous applications and is easy to install due to its simple surface-mount design. Its high standoff voltage and quick response time make this device a top choice for protecting sensitive components and systems from harmful transient voltages.

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