ESD9X12ST5G

Series:	--
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Type:	Zener
Unidirectional Channels:	1
Voltage - Reverse Standoff (Typ):	12V (Max)
Voltage - Breakdown (Min):	13.5V
Voltage - Clamping (Max) @ Ipp:	23.7V
Current - Peak Pulse (10/1000µs):	5.9A (8/20µs)
Power - Peak Pulse:	140W
Power Line Protection:	No
Applications:	General Purpose
Capacitance @ Frequency:	30pF @ 1MHz
Operating Temperature:	-55°C ~ 150°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	SOD-923
Supplier Device Package:	SOD-923
Base Part Number:	ESD9

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TVS - Diodes

The ESD9X12ST5G is a type of Transient Voltage Suppressor (TVS) diode designed to protect electrical components from high voltage pulses commonly caused by electrostatic discharges (ESD). ESD pulses possess extremely fast rise times and can cause severe damage to sensitive circuits. To mitigate this damage, the ESD9X12ST5G acts as a voltage clamp which absorbs the excessive energy contained in ESD pulses and diverts it to ground, preventing it from damaging the sensitive components in a circuit.

Applications

The ESD9X12ST5G is most commonly used in circuits which contain sensitive components such as microprocessors, logic ICs, FPGAs, and other integrated circuits. It can also be used in communication systems, consumer electronics, automotive systems, and other electronic applications which are exposed to ESD.

Working Principle

The ESD9X12ST5G is designed with two series-connected components; an avalanche diode and a Zener diode. Under normal conditions, the avalanche diode is reverse-biased, so it does not conduct any current. When a high voltage ESD pulse is applied to the device, it is temporarily forward-biased, allowing current to pass through the diode. This current is limited by the Zener diode which causes the voltage to drop to a safe level. The energy from the ESD pulse is then dissipated as heat. The device is designed to handle pulse voltages of up to 12 Volts, and can operate over a wide temperature range from -55°C to 150°C. It also incorporates a variety of features to maximize protection and enable it to meet the requirements of various application standards including AEC-Q101, EN 61000-4-2, MIL-STD-750, and IEC 61000-4-2.

Conclusion

The ESD9X12ST5G is a TVS diode optimized for ESD protection. It is widely used in sensitive electronics applications, and its design enables it to meet the requirements of various international standards. Its avalanche and Zener diode components work together to absorb and divert the energy of ESD pulses, preventing them from damaging sensitive electronic components.

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