SZ1SMA40CAT3G

Voltage - Clamping (Max) @ Ipp:	64.5V
Supplier Device Package:	SMA
Package / Case:	DO-214AC, SMA
Mounting Type:	Surface Mount
Operating Temperature:	-65°C ~ 150°C (TJ)
Capacitance @ Frequency:	160pF @ 1MHz
Applications:	Automotive
Power Line Protection:	No
Power - Peak Pulse:	400W
Current - Peak Pulse (10/1000µs):	6.2A
Series:	Automotive, AEC-Q101
Voltage - Breakdown (Min):	44.4V
Voltage - Reverse Standoff (Typ):	40V
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

Transient Voltage Suppressor (TVS) diodes are a critical component for any circuit device that has an electronic interface. They help protect the device from high voltage spikes or overvoltage transient voltage events. The TVS diode, also referred to as a Transient Voltage Suppression Diode (TVSD) or Silicon Avalanche Diode (SAD), is a specialized form of diode that is specifically designed to protect the device or system from transient voltage events or other electrical overvoltage anomalies. This type of diode acts as a "catch all" for high electric current and voltage spikes, which can cause serious damage to a delicate and complex electronic system.

The SZ1SMA40CAT3G is a TVS diode that is specifically designed to protect sensitive electronic circuits from overvoltage events. It has very low flat capacitances, low dynamic capacitances, and fast response times. Its operating voltage range is between 10 Volts and 15 Volts, and its peak pulse current is 40 amperes. It also features an impressive minimum breakdown voltage of 14.6 volts and a maximum clamp voltage of 18.8 volts. It has a low power bidirectional clamping circuit, and it is also RoHS compliant, so it is safe for use in environments where hazardous materials and contaminants may be present.

The main purpose of the SZ1SMA40CAT3G is to protect sensitive electronic components from overvoltages or high voltage transients. Specifically, it is designed to protect against electrostatic discharge (ESD), electrical fast transients (EFTs) and lightning strike induced currents. It is able to maintain a high level of protection on high-speed data and signal lines, while simultaneously providing surge protection so that delicate circuits from voltage and current transients generated by lightning, switching power supplies, and other electrostatic transient events. It features a low capacitance and very low parasitics for high speed data and signal line protection.

The specific operating principle of the SZ1SMA40CAT3G involves using a reverse biased standoff voltage. When no overvoltage transients occur, this diode remains non-conductive and acts as a high-impedance circuit, thus limiting the current flow in the circuit. In case of an overvoltage event or voltage spike, the diode\'s forward voltage drop decreases and the current through the diode increases rapidly. The diode then functions as a voltage limiter, thereby limiting the overvoltage and maintaining the correct operating voltage level in the circuit. Thus, this diode provides an effective overvoltage protection against ESDs, EFTs, and lightning-induced currents.

The SZ1SMA40CAT3G is a great choice for many applications, including high speed data and signal line protection, mobile device protection, IEC 61000-4-2 pulse protection, and automotive electronic systems. It is especially well-suited for protecting devices and systems from the damaging effects of electrostatic discharge, electrical fast transients, and lightning. Further, the SZ1SMA40CAT3G is compliant with RoHS standards, so it is suitable for use in hazardous environments. This makes it an excellent choice for robust device or system protection.

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