SMBG11CAHE3/52 Circuit Protection

Current - Peak Pulse (10/1000µs):	33A
Base Part Number:	SMBG
Supplier Device Package:	DO-215AA (SMBG)
Package / Case:	DO-215AA, SMB Gull Wing
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:	18.2V
Voltage - Breakdown (Min):	12.2V
Voltage - Reverse Standoff (Typ):	11V
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, SMBG11CAHE3/52 Application Field and Working Principle

A transient voltage suppressor (TVS) denotes a diode designed to inhibit surge voltages caused by destructive events such as electrostatic discharge (ESD) or induced electromagnetic transients. It is broadly classified into two categories. The first is a Zener diode and the other is a Tunnel diode, which are further classified into other types depending on their applications. SMBG11CAHE3/52 is a transient voltage suppressor diode that provides reliable protection against ESD.

Working Principle and Features of SMBG11CAHE3/52

The SMBG11CAHE3/52 is an ultra-low capacitance diode which operates on the avalanche breakdown principals. When the applied voltage is greater than the breakdown voltage, avalanche conduction occurs in the device. The device typically starts to conduct current at approximately 11-14V and the current gain or "avalanche breakdown" voltage is typically in the range of 16-24V. The avalanche breakdown voltage is then further increased by the temperature dependence of the device which ensures robust protection against ESD and other fast transients. Other key features of the SMBG11CAHE3/52 device include a low capacitance of 19pF at 4V, low clamping voltage of 18V, and an operating temperature range of -40°C to 150°C.

Application Areas for SMBG11CAHE3/52

The SMBG11CAHE3/52 is a popular choice for a range of applications in military, automotive, industrial, and consumer electronics due to its reliable ESD protection that can be easily integrated into a circuit.In particular, the SMBG11CAHE3/52 is used for ESD protection in high-speed serial data and signal lines such as Ethernet, HDMI, and USB. It can also be used as an EMI/RFI filter in RF circuits and for clamping the high dv/dt caused by high-di/dt switching transients in power circuits. These features make the SMBG11CAHE3/52 an essential component for a variety of designs.

Conclusion

The SMBG11CAHE3/52 device is a transient voltage suppressor diode that provides reliable operation under extreme temperature conditions and high voltage conditions. It is often used for ESD protection in high-speed serial data and signal lines, such as Ethernet, HDMI, and USB, as well as for EMI/RFI filtering and clamping high dv/dt caused by high-di/dt switching transients in power circuits. Its robust protection against destructive events brought about by transients makes it an essential component for a variety of designs.

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