SMCJ9.0-E3/9AT

Current - Peak Pulse (10/1000µs):	88.8A
Base Part Number:	SMCJ
Supplier Device Package:	DO-214AB (SMCJ)
Package / Case:	DO-214AB, SMC
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 150°C (TJ)
Capacitance @ Frequency:	--
Applications:	General Purpose
Power Line Protection:	No
Power - Peak Pulse:	1500W (1.5kW)
Series:	TransZorb®
Voltage - Clamping (Max) @ Ipp:	16.9V
Voltage - Breakdown (Min):	10V
Voltage - Reverse Standoff (Typ):	9V
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Part Status:	Obsolete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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Introduction - SMCJ9.0-E3/9AT

SMCJ9.0-E3/9AT is a surface mount transient voltage suppressor (TVS) diode developed by ON Semiconductor. It is designed to protect sensitive components from severe voltage spikes and over-voltage events due to electrostatic discharge (ESD) and electrical overstress (EOS). The device is highly robust and can withstand extreme environmental conditions.

Application Field

SMCJ9.0-E3/9AT is a key component in a wide range of applications. It can be used for protection of high-speed data lines in Ethernet, Universal Serial Bus (USB) and other communication interfaces; for protection against power surges in various power supply architectures; and for protection of sensitive microcontrollers, processors, and other integrated circuits.The device is also used in mobile and battery-powered devices, where its low operating power and reverse leakage currents make it a superior device in comparison to other TVS diodes. In addition to this, the device provides protection of the printed circuit board (PCB) against electrostatic discharge (ESD) and electro-magnetic interference (EMI).

Working Principle

The working principle of SMCJ9.0-E3/9AT can be broken down into two main components:The first component is the TVS diode itself, which functions as a break-over or Bidirectional Break Over Zener Diode (BBOZD) device. It is designed to operate in an active state with a low forward-bias current to minimize power dissipation. The diode is designed to withstand high-voltage spikes and over-voltage events, such as ESD and EOS. The second component is the ESD protection circuit, which uses body-diodes, clamping diodes and zener diodes to protect the device against high voltage spikes. This protective circuit is designed to ensure that any excessive charge is safely discharged, and any over-voltage is safely clamped.

Conclusion

SMCJ9.0-E3/9AT is a surface mount transient voltage suppressor (TVS) diode developed by ON Semiconductor. It is designed to protect sensitive components from severe voltage spikes and over-voltage events due to electrostatic discharge (ESD) and electrical overstress (EOS). The device is highly robust, and can be used for protection of high-speed data lines in Ethernet, Universal Serial Bus (USB) and other communication interfaces; for protection against power surges in various power supply architectures; and for protection of sensitive microcontrollers, processors, and other integrated circuits. The device works by using a TVS diode in conjunction with an ESD protection circuit, which includes body-diodes, clamping diodes and zener diodes. This ensures that any excessive charge is safely discharged, and any over-voltage is safely clamped.

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