SM8S11HE3/2D

Current - Peak Pulse (10/1000µs):	328A
Base Part Number:	SM8S
Supplier Device Package:	DO-218AB
Package / Case:	DO-218AB
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 175°C (TJ)
Capacitance @ Frequency:	--
Applications:	Automotive
Power Line Protection:	No
Power - Peak Pulse:	6600W (6.6kW)
Series:	Automotive, AEC-Q101, PAR®
Voltage - Clamping (Max) @ Ipp:	20.1V
Voltage - Breakdown (Min):	12.2V
Voltage - Reverse Standoff (Typ):	11V
Unidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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SM8S11HE3/2D Application Field and Working Principle

The SM8S11HE3/2D is one of the most popular TVS devices on the market. Designed to protect against transient voltage spikes and surges, it is widely used across a wide range of electronic applications. In this article, we will take a look at the application field and working principles of the device.

Application Field

The SM8S11HE3/2D is primarily used in automotive and industrial applications. It can be used to protect sensitive components such as microcontrollers, sensors, and actuators from damage caused by transient voltage spikes and surges. It is also often used to protect communication lines from electrical noise such as ESD and EMI. Additionally, the SM8S11HE3/2D can be used for automotive HVAC system, power steering system, and automotive audio systems.

Working Principle

The SM8S11HE3/2D is a multi-layer, axial-leaded device made of silicon and has anode and cathode terminals. When a voltage spike or surge occurs, the device acts as a reverse biased diode and clamps down the voltage to a predefined safe level. When the voltage exceeds the breakdown voltage of the device, current flows through its anode and cathode terminals. This current is then dissipated as heat, which prevents damage to sensitive components.

Conclusion

The SM8S11HE3/2D is a popular TVS device that is widely used in automotive and industrial applications for protection against transient voltage spikes and surges. Its working principle is based on the reverse biased diode principle, which allows the device to clamp the voltage to a predefined safe level and dissipate the current as heat, thus preventing damage to sensitive components.

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