MMBZ5238BLT1G

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	8.7V
Tolerance:	±5%
Power - Max:	225mW
Impedance (Max) (Zzt):	8 Ohms
Current - Reverse Leakage @ Vr:	3µA @ 6.5V
Voltage - Forward (Vf) (Max) @ If:	900mV @ 10mA
Operating Temperature:	-65°C ~ 150°C
Mounting Type:	Surface Mount
Package / Case:	TO-236-3, SC-59, SOT-23-3
Supplier Device Package:	SOT-23-3 (TO-236)
Base Part Number:	MMBZ5238B

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MMBZ5238BLT1G Application Field and Working Principle

Overview of MMBZ5238BLT1G

MMBZ5238BLT1G is a low voltage Zener diode produced by ON Semiconductor. The diode has a hermetically sealed, glass-fitted package, and features a wide range of features to ensure reliable operation, such as a Power Dissipation of 350 mW, and a Test Current of 500 mA. The device has a reverse break down voltage of 5.1V and a maximum reverse stand off voltage of 5.8V. The diode also provides excellent transient response and low noise performance, making it suitable for most applications.

Application Fields of MMBZ5238BLT1G

Due to its low voltage, the MMBZ5238BLT1G is mostly used in applications that require low-voltage protection. It is mostly used in automotive and control applications, as it can provide reliable and economical protection from voltage transients and surges. The diode is also used in a variety of different applications, such as:

• Lighting Controls - The MMBZ5238BLT1G is used in the protection element of the electric switching system that controls the intensity and color of the lights in commercial and industrial settings.
• Medical and Industrial Devices – The MMBZ5238BLT1G is also used in medical and industrial devices, as it offers reliable protection from voltage surges. It is also used in these applications due to its low forward voltage drop and high stability.
• Power Supplies – The diode is also used in a number of power supply applications, such as DC-DC converters, AC adapters and switchmode power supplies, because it offers low noise performance, low power dissipation, excellent stability and wide range of reverse voltage.
• High Reliability Applications – The MMBZ5238BLT1G is used in high-reliability applications, as it offers superior reliability and superior protection from transient surges.

Working Principle of the MMBZ5238BLT1G

The MMBZ5238BLT1G works on the principle of zener breakdown. When the voltage across the diode reaches the value of its designated zener voltage, the electric field inside the diode increases to a point where it overcomes the internal resistance of the junction, causing a large amount of current to flow through the diode. This current flows in the reverse direction, which helps to protect the circuit from voltage spikes and transients.The diode has two different operating modes – break over and zener breakdown. In break over mode, the diode breaks over at its maximum power dissipation when a voltage reaches its breakdown voltage. In zener breakdown mode, the diode will not break down until the forward voltage reaches the zener voltage. The MMBZ5238BLT1G also has excellent temperature stability and low noise performance, making it suitable for many different high-reliability applications. It has a low reverse stand off voltage, which helps to protect the circuit from voltage spikes and transients. The diode also features a small size and low power consumption, which makes it suitable for large-scale applications.

Conclusion

The MMBZ5238BLT1G is a low voltage hermetically sealed glass-filled Zener diode produced by ON Semiconductor. It is mainly used in automotive and control applications, as it can provide reliable and economical voltage protection from transients an surges. It also has excellent temperature stability and low noise performance, making it suitable for many different high-reliability applications.

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