ZMM5267B-7 Discrete Semiconductor Products

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Voltage - Zener (Nom) (Vz):	75V
Tolerance:	±5%
Power - Max:	500mW
Impedance (Max) (Zzt):	270 Ohms
Current - Reverse Leakage @ Vr:	100nA @ 56V
Voltage - Forward (Vf) (Max) @ If:	1.5V @ 200mA
Operating Temperature:	-65°C ~ 175°C
Mounting Type:	Surface Mount
Package / Case:	DO-213AC, MINI-MELF, SOD-80
Supplier Device Package:	Mini MELF

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Diodes - Zener - Single: ZMM5267B-7 Application Field and Working Principle

The ZMM5267B-7 is a Zener diode from ZMD that offers single-chip solutions for a variety of applications. This diode is a part of the ChipFETs family for low-voltage applications and is designed for voltage regulation and voltage safeguarding in many different applications. The key features of the ZMM5267B-7 include its low forward voltage drop and low capacitance, making it especially suitable for high-speed applications.The ZMM5267B-7 is a Zener diode used as a voltage regulator and as a protector against transient voltages. Zener diodes consist of a PN junction diode in which the breakdown voltage is precisely determined. In the case of the ZMM5267B-7, the breakdown voltage is 5.7 V and the maximum power dissipation is 300 mW. The ZMM5267B-7 is well-suited for a variety of applications. Primarily, it is used for protecting circuits from excessive voltage or current. It is especially useful in automotive applications, as it can regulate the output voltage of the ECU, protect against overvoltage or short circuits, and act as an active surge suppressor. It can also be used in power supplies, computer circuits, and audio amplifiers. In some cases, a single ZMM5267B-7 is sufficient for the job, while in others, a string of multiple diodes is necessary.In operation, the ZMM5267B-7 works in essentially the same way as other Zener diodes. It is made up of a PN junction, and when the ZMM5267B-7 is reverse biased, the electric field across the junction is increased. At a certain point, the electric field across the junction reaches a critical point and breakdown occurs, causing the diode to conduct current in the reverse direction. This reverse current flow limits the voltage across the diode to the Zener voltage of 5.7V.The ZMM5267B-7 provides two basic functions. First, it is used as a voltage regulator, ensuring that the voltage in a circuit does not exceed the Zener voltage even if the input voltage changes. Second, it acts as a surge protector, limiting the peak voltage to below the Zener voltage and thus preventing circuit damage.Overall, the ZMM5267B-7 is an excellent choice for a variety of applications due to its low forward voltage drop, low capacitance, and high surge current capability. It offers precise voltage regulation and protection, allowing safer operation and longer life in many electronic circuits.

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