SMF40AT1

Current - Peak Pulse (10/1000µs):	3.1A
Base Part Number:	SMF*A
Supplier Device Package:	SOD-123FL
Package / Case:	SOD-123F
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 150°C (TJ)
Capacitance @ Frequency:	--
Applications:	General Purpose
Power Line Protection:	No
Power - Peak Pulse:	200W
Series:	--
Voltage - Clamping (Max) @ Ipp:	64.5V
Voltage - Breakdown (Min):	44.4V
Voltage - Reverse Standoff (Typ):	40V
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Part Status:	Obsolete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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TVS – DiodesA TVS (Transient Voltage Suppressor) diode is a silicon-based, voltage-dependent electronic component. As its name implies, it is designed to protect protected circuits, such as sensitive computer and communications systems, from high-voltage incidents such as power surge or other forms of electrical overshoot that can fry sensitive components.SMF40AT1 application field and working principleThe SMF40AT1 from Toshiba is a 400V (breakdown voltage) SIL (surface mount) si TR (trench-structure) TVS diode. This model is intended as a surge protector in applications that require reliable protection from electrical overshoot.This part’s VBR (breakdown voltage) is 400V, and its breakdown current (ITSM) is 17A (26mV/multiplierring). It has a clamping voltage of 5.2V and an IEC (International Electrotechnical Commission) 61000-4-2 (ESD) rating of 15kV (Air) / 12kV (Contact). It has a capacitance of 3.1pF typical.When power to the protected circuit rises over the diode’s breakdown voltage, the diode will quickly clamp the voltage at a safe level. This limits current flowing through the diode, protecting the circuit from further damage. The device will then slowly discharge its stored energy over time, resetting it it back to its idle state when the power levels are below the breakdown voltage.In conclusion, the SMF40AT1 from Toshiba is a low-cost, reliable solution for providing surge protection for circuits and components in a wide range of applications. It offers excellent ESD protection, reliable performance, and low capacitance for low-noise operation.

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