SMA6F18A-M3/6A

Current - Peak Pulse (10/1000µs):	102A (8/20µs)
Base Part Number:	SMA6F
Supplier Device Package:	DO-221AC (SlimSMA)
Package / Case:	DO-221AC, SMA Flat Leads
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 175°C (TJ)
Capacitance @ Frequency:	--
Applications:	General Purpose
Power Line Protection:	No
Power - Peak Pulse:	4000W (4kW)
Series:	TransZorb®
Voltage - Clamping (Max) @ Ipp:	33.2V
Voltage - Breakdown (Min):	20V
Voltage - Reverse Standoff (Typ):	18V
Unidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Introduction

SMA6F18A-M3/6A is a TVS diode, which can be used in transient voltage surge protection. It is an ideal solution for overvoltage protection in different circuit designs. Features such as low insertion loss, low capacitance, high speed, and quick turn-on response make SMA6F18A-M3/6A a suitable choice for many applications.

Application Field

SMA6F18A-M3/6A is used for protecting sensitive components from transient voltage surges that arise from nearby lighting strikes, electrostatic discharge (ESD), and electric arcs. It can be used in a wide range of different circuit designs, including automotive electronics, consumer electronics, communication equipment, household appliances, and more. It is suitable for input/output and power line protection in high-current applications, as well as for overvoltage protection in data and communication lines. In cases such as automotive electronics, the best solution for protecting both the wiring harness and the attached components is to install the SMA6F18A-M3/6A diode directly on the circuit board. This diode is designed to work with low voltage, so it can efficiently protect the circuitry from voltage transients caused by ESD, inductive loading, and chopped loads.

Working Principle

All transistors, including TVS (transient voltage suppressors), operate on the same principle. Transistors are controllable current switches controlled by an input voltage. A transistor acts as a current switch, allowing current to flow between two terminals when a control voltage is applied. The SMA6F18A-M3/6A is no different.The SMA6F18A-M3/6A works on the principle of a voltage-clamped diode. When a sufficiently large pulse is applied to the diode, the voltage will not exceed the voltage rating of the diode. The SMA6F18A-M3/6A is designed to protect the circuit from overvoltage transients up to a certain threshold. When an overvoltage transient reaches this threshold voltage, the SMA6F18A-M3/6A will start to clamp the voltage and divert its energy to ground. This prevents the voltage from rising too high and damaging sensitive components.

Conclusion

The SMA6F18A-M3/6A is a type of TVS diode that is designed to protect circuitry from transient voltage surges. It can be used in a wide range of applications, including automotive electronics, consumer electronics, communication equipment, and more. Its voltage-clamping mechanism ensures that sensitive components are protected from overvoltage transients.

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