SMLJ20A-QH

Current - Peak Pulse (10/1000µs):	92.6A
Supplier Device Package:	SMC (DO-214AB)
Package / Case:	DO-214AB, SMC
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 150°C (TJ)
Capacitance @ Frequency:	--
Applications:	Automotive
Power Line Protection:	No
Power - Peak Pulse:	3000W (3kW)
Series:	Automotive, AEC-Q101, SMLJ
Voltage - Clamping (Max) @ Ipp:	32.4V
Voltage - Breakdown (Min):	22.2V
Voltage - Reverse Standoff (Typ):	20V
Unidirectional Channels:	1
Moisture Sensitivity Level (MSL):	--
Type:	Zener
Lead Free Status / RoHS Status:	--
Part Status:	Active

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TVS diodes, also known as transient voltage suppressors, are devices commonly used for protecting against transient voltages and overvoltage spikes. The SMLJ20A-QH device is a Transient Voltage Suppressor (TVS) diode specifically designed for protection from high-voltage pulses, electrostatic discharges (ESD), and overvoltage faults, especially in telecommunications and power electronics applications.The SMLJ20A-QH, being a unidirectional TVS, is designed to limit only positive voltage spikes and is typically used at the input-side of the circuit, where the user needs to guard against any high voltage pulses or transients. This TVS diode is a RoHS compliant device and exhibits a low clamping voltage with minimal residual voltage following surge current pulse. It is housed in a low-profile, surface-mount SOD-123 package and is suitable for soldering to a printed circuit board (PCB) using standard SMT soldering methods or using manual soldering techniques.The SMLJ20A-QH device can be used in a wide range of applications such as telecommunications, High Definition Multimedia Interface (HDMI) Protective, automotive, avionics, power line communications, and many industrial applications as an electrical overvoltage protector. The SMLJ20A-QH device works based on the principle of avalanche breakdown, which is triggered when the voltage applied across the device exceeds the breakdown voltage and the breakdown voltage increases with the increase in the reverse voltage or the electric field. In other words, this device operates at the breakdown voltage (VBR) which is the specified clamping voltage of the device at which it will start conducting. Once the breakdown voltage is reached, the TVS Diode conducts a large currents that is limited only by the external components. This oscillation of current through the TVS diode is known as an avalanche pulse and it limits the voltage spike quickly and clamps it to a safe level. The device will remain in a conducting state until the spike passes and the voltage returns to a normal level, at which point the device will return to an nonconducting state.The TVS diode also has various other characteristics which make it the ideal overvoltage protector in many applications. These characteristics include a low dynamic resistance, fast response time, noise immunity and low leakage current. The device also offers excellent ESD protection and reliable operation for both low and high-speed data interfaces. The SMLJ20A-QH TVS diode offers excellent performance and reliability in transient voltage suppression applications, making it an ideal choice for protecting sensitive electronics in a wide range of applications. It provides excellent protection from high-voltage pulses and other transient conditions, ensuring that the system operates reliably and providing long-term reliability.

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