DFLT170A-7 Circuit Protection

Current - Peak Pulse (10/1000µs):	810mA
Base Part Number:	DFLT170
Supplier Device Package:	PowerDI™ 123
Package / Case:	POWERDI®123
Mounting Type:	Surface Mount
Operating Temperature:	-65°C ~ 150°C (TJ)
Capacitance @ Frequency:	--
Applications:	Automotive
Power Line Protection:	No
Power - Peak Pulse:	225W
Series:	Automotive, AEC-Q101
Voltage - Clamping (Max) @ Ipp:	281V
Voltage - Breakdown (Min):	189V
Voltage - Reverse Standoff (Typ):	170V
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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DFLT170A-7 Application Field and Working PrincipleTVS - diodes are used to protect sensitive electronic components from electrical transients such as lightning, power surges and electrostatic discharge. The DFLT170A-7 is a special type of transient voltage suppressor specially designed for applications involving media-rich digital systems, especially those found in automotive, military, industrial and consumer electronics.The DFLT170A-7 features low capacitive coupling of compound materials for reverse stand-off voltage breakdown protection, and features a working voltage rating of up to 20V. The diodes are also capable of handling up to 17A peak impulse current. This enables them to protect the circuitry of various systems from electrical transients.The working principle of a TVS diode is based on the principle of Zener breakdown. When the voltage across the device rises above its rated breakdown voltage, a small current starts to flow through the diode. This small current creates a forward biasing of the diode and the voltage across the diode drops to a magnitude that is lower than its breakdown voltages. Thus, any transient or surge that would normally damage sensitive components is restricted to the breakdown voltage of the diode, and the circuitry remains undamaged.The DFLT170A-7 is a particularly robust TVS device, as it offers high voltage and current capacities while still maintaining a low capacitive coupling, thus ensuring excellent performance and reliability in harsh electrical environments. The diodes are also shock and vibration resistant, having been tested to meet military standards. Additionally, the diodes have a low junction capacitance which reduces the chances of false triggering in most applications.As such, these unique characteristics make the DFLT170A-7 a great choice for a wide range of applications, including automotive, military, industrial and consumer electronics. In automotive systems, they are used to protect GPS navigation and data communication systems from overvoltage or transients. In military systems, they are used to protect engines and avionics from voltage fluctuations. In industrial and consumer applications, they are used to protect microcontrollers and other sensitive components from voltage transients.To sum up, the DFLT170A-7 is an excellent choice of TVS diode for protecting sensitive electronic components from electrical transients. The device features a low coupling capacity, high voltage and current ratings, and shock and vibration resistant construction, all of which make it an excellent choice for a wide range of applications. It is also very reliable, ensuring that the protected electronics remain undamaged from voltage transients.

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