SA5.0AHB0G Circuit Protection

Voltage - Clamping (Max) @ Ipp:	9.2V
Supplier Device Package:	DO-204AC (DO-15)
Package / Case:	DO-204AC, DO-15, Axial
Mounting Type:	Through Hole
Operating Temperature:	-55°C ~ 175°C (TJ)
Capacitance @ Frequency:	--
Applications:	Automotive
Power Line Protection:	No
Power - Peak Pulse:	500W
Current - Peak Pulse (10/1000µs):	57A
Series:	Automotive, AEC-Q101, SA
Voltage - Breakdown (Min):	6.4V
Voltage - Reverse Standoff (Typ):	5V
Unidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction to SA5.0AHB0G TVS - Diodes

The SA5.0AHB0G is one of the latest additions to the market of transient voltage suppress (TVS) diodes. It is a dual transistor bipolar (BJT) device with an integrated field effect transistor (FET). This device is designed to provide protection from electrical overloads and overvoltage. Its working principle involves the rapid switching of a FET when an overvoltage or surge is detected.

Application Field

The SA5.0AHB0G is best used in applications where high-speed electrical transients are expected. It is suitable for use in digital and analog circuits, such as PCBs and other signal-bearing components that are exposed to high-voltage transients. Its wide operating temperature range (-40° to +125°C) makes it ideal for use in harsh environments.The performance characteristics of the SA5.0AHB0G make it well suited for several applications, including: protecting communication circuits from overvoltage, signal-isolating power lines from ground, providing surge protection for automotive circuits, filtering high-frequency noise in audio amplifier circuits, and protecting voltage sensor circuits.

Working Principle

The SA5.0AHB0G utilizes a bipolar-FET structure. This means that it has two separate transistors: one FET and one BJT. The FET is then connected to an integrated resistor, which is resistor connected when no overvoltage or surge is detected, but then rapidly switches on when an overload or surge is detected.When a surge is detected, the voltage level across the FET increases. This increases the current flow into the resistor until it reaches its maximum level. At this point, the energy from the surge is dissipated and the voltage level across the FET falls. This process is known as clamping. The time it takes for the FET to reach its maximum voltage is known as the response time.

Conclusion

The SA5.0AHB0G is a highly reliable, robust TVS diode. Its wide operating temperature range makes it ideal for use in harsh environments. Its fast response time and bi-directional protection make it ideal for use in applications where high-speed transient voltage surges are expected. With its integrated dual FET structure and integrated resistor, it provides excellent surge and overvoltage protection for electrical circuits.

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