MMBZ12VALFHT116 Circuit Protection

Voltage - Clamping (Max) @ Ipp:	17V
Supplier Device Package:	SSD3
Package / Case:	TO-236-3, SC-59, SOT-23-3
Mounting Type:	Surface Mount
Operating Temperature:	150°C (TJ)
Capacitance @ Frequency:	85pF @ 1MHz
Applications:	Automotive
Power Line Protection:	No
Power - Peak Pulse:	40W
Current - Peak Pulse (10/1000µs):	2.35A
Series:	Automotive, AEC-Q101
Voltage - Breakdown (Min):	11.4V
Voltage - Reverse Standoff (Typ):	8.5V (Max)
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 – MMBZ12VALFHT116 Application Field and Working Principle

The Transient Voltage Suppressor Diode, or TVS-Diode, is an efficient tool used to protect sensitive electronic equipment from voltage surges. Specifically, the MMBZ12VALFHT116 is designed to provide robust protection against ESD, static discharges, and lightning-induced transient voltages. It is an axial-leaded device suitable for surface mount applications and is offered in an industry-standard three-leaded package.

Application Field

The MMBZ12VALFHT116 diode is primarily used in applications where the circuit must be protected from ESD and transient voltages. It is designed to be connected directly on a PCB, and can be used in both AC and DC applications. Its axial-leaded design allows it to be compact and efficient, making it suitable for both through-hole and surface mount applications.The MMBZ12VALFHT116 is commonly used in computer applications and consumer electronics. It can also be used in automotive systems, industrial control systems, and telecommunications systems. It is designed to withstand high transient voltages up to 15kV, making it well-suited for lightning protection.

Working Principle

The MMBZ12VALFHT116 works on the principle of avalanche breakdown. When an electrical surge is applied to the diode, the potential barrier of the junction breaks down and a large current is drawn from the source. The current flow is then redirected to the supplied shunt resistor, reducing the voltage on the protected circuitry to safe levels.The MMBZ12VALFHT116 is designed to be thermally stable and reliable, with a temperature coefficient of less than 1V. It has a breakdown voltage of 1.2kV and a maximum clamping voltage of 15kV. It is also designed to operate within a wide temperature range from -55°C to 125°C.

Conclusion

The MMBZ12VALFHT116 diode is a robust solution for protecting electronic equipment from transient voltages and ESD. It offers a great combination of excellent surge protection ratings, small size, and wide temperature range. Its axial-leaded design allows for simple surface mounting, making it popular in a range of applications.

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