SMM4F12A-TR Circuit Protection

Current - Peak Pulse (10/1000µs):	91A (8/20µs)
Base Part Number:	SMM4F
Supplier Device Package:	DO222-AA
Package / Case:	DO-222AA
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 175°C (TJ)
Capacitance @ Frequency:	--
Applications:	General Purpose
Power Line Protection:	No
Power - Peak Pulse:	400W
Series:	SMM4F, TRANSIL™
Voltage - Clamping (Max) @ Ipp:	25.3V
Voltage - Breakdown (Min):	13.3V
Voltage - Reverse Standoff (Typ):	12V
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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TVS - Diodes are an important component in many electrical and electronics applications. They are used in the protection of electrical and electronic circuits against electrical surges and over-voltages. In electronics, TVS-Diodes, sometimes referred to as transient voltage suppressors (TVS), are very useful in a variety of applications from protecting against power surges on power lines to protecting digital circuitry and data buses from being damaged due to transients. The SMM4F12A-TR is a typical representative of TVS - Diodes. It is an ultra low capacitance, four line ESD protection diode array packaged in a tiny 0402 package. This diode features an ESD protection of up to +/- 15kV (contact ESD) which meets the requirements of IEC61000-4-2 Level 4. It also features the ability to withstand high voltage transients of up to 30V transient pulse, and has a low clamping voltage of 15.5V. The SMM4F12A-TR is typically used for ESD protection of high speed data lines such as USB 3.0, HDMI, SATA, SAS, LVDS and Video interfaces. It can also be used to protect other lines such as audio and power lines, and provide data signal integrity. This diode can also be used to protect lithium batteries from overcharge and overdischarge. Additionally, this device has an effective reduction in EMI/RFI noise generation due to its low ESR and low capacitance.The working principle of the SMM4F12A-TR diode is quite simple. When the voltage reaches the clamp voltage of 15.5V or higher, the diode will enter the active region, conducting current from the anode to the cathode. The excess energy from the higher voltage is then dissipated in the form of heat, protecting the device from damage due to over-voltage.The SMM4F12A-TR diode is an important tool in protecting electronic devices and circuits from overloads and transients. It is also useful for preventing data or signal integrity issues due to EMI or RFI interference. Its small size, high performance, and low capacitance and ESR make it a great choice for a variety of electronic applications.

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