SMBJ58AHE3/5B

Current - Peak Pulse (10/1000µs):	6.4A
Base Part Number:	SMBJ
Supplier Device Package:	DO-214AA (SMBJ)
Package / Case:	DO-214AA, SMB
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 150°C (TJ)
Capacitance @ Frequency:	--
Applications:	Automotive
Power Line Protection:	No
Power - Peak Pulse:	600W
Series:	Automotive, AEC-Q101, TransZorb®
Voltage - Clamping (Max) @ Ipp:	93.6V
Voltage - Breakdown (Min):	64.4V
Voltage - Reverse Standoff (Typ):	58V
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

TVS (Transient Voltage Suppressors) diodes are widely used in various applications, such as providing immunity from high voltages in consumer electronic devices, protecting communication lines from high energy transients, and electrical overstress. SMBJ58AHE3/5B is a particularly powerful TVS diode, designed for bi-directional surge protection on data and signal lines.

Application Field

SMBJ58AHE3/5B’s applications are mainly focused on providing protection to data and signal lines, such as address, data, control, and status lines. It is intended for a wide variety of applications, such as telecommunications, networking, home appliances, industrial electronics, and computers. It boasts a highly robust structure and is capable of providing a high peak pulse current of 5A. The device offers various levels of robust protection and its reverse stand-off voltage is varied, depending on the model. This makes it suitable for use in different application fields, needing different levels of protection. The model SMBJ58AHE3/5B has a stand-off voltage of 5.0V, making it an ideal choice for systems that are constantly exposed to high transient stress.

Working Principle

SMBJ58AHE3/5B provides protection to the system by limiting the voltage across the devices in two ways: clamping and absorption. Clamping involves clamping the voltage, allowing only a predetermined voltage to pass through the device. Absorption, on the other hand, involves absorbing the energy of the transient and dissipating it as heat. The device limits the voltage using the reverse breakdown characteristics of the diode. When the voltage exceeds the stand-off voltage, a reverse-biased junction becomes forward-biased and starts conducting current. This allows the device to absorb a large amount of energy and protect the system. The reverse stand-off voltage of the device is designed to be high enough that it does not trigger under normal operating conditions. This ensures that the device does not interfere with normal operations. At the same time, the device is designed to trigger quickly enough that it can effectively protect the system from transient surges.

Conclusion

In conclusion, the SMBJ58AHE3/5B is an effective TVS diode designed for bi-directional surge protection on data and signal lines. Its reverse stand-off voltage is 5.0V, making it suitable for systems that are constantly exposed to high transient stress. It provides protection to the system by limiting the voltage across the devices in two ways: clamping and absorption. Thus, SMBJ58AHE3/5B is an ideal choice for protecting various electronic systems from transient surges.

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