MMSZ5246BS-7 Discrete Semiconductor Products

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Diodes - Zener - Single

The MMSZ5246BS-7 is a single-ended Zener diode which belongs to the diodes category of semiconductor components. It is available in the 2-pin SOD-123 package and is designed to work at 5.1V. This part has a low maximum reverse leakage current and is suitable for use at higher temperatures. It is intended for applications such as ESD protection, voltage clamping, mixer bias, and reverse bias protection.

Principle of Operation

The MMSZ5246BS-7 operates in the same fashion as other Zener diodes. It consists of a heavily doped PN junction which is designed to break down and allow current to pass in the reverse direction. The breakdown behaviour of the diode is reverse-biased, meaning that for an applied reverse voltage below the Zener voltage, the junction does not allow any current flow. Conversely, when the applied reverse voltage exceeds the Zener voltage, the diode breaks down and permits current flow.

Characteristics

The MMSZ5246BS-7’s features include a Zener voltage range between 4.7V and 5.6V, with a nominal Zener voltage of 5.1V. It’s maximum power rating is 350mW along with a positive temperature coefficient of 45mV/°C. The diode has a breakdown voltage of 5.1V, a test current of 1mA and a reverse leakage current of 2µA. Its maximum allowable reverse power is 190mW and its maximum reverse current is 10mA. It has a Cathode capacitance of 5.5pF, a Junction capacitance of 11pF and a Forward voltage of 0.35V.

Applications

The MMSZ5246BS-7 can be used in the protection of circuits from overvoltage and ESD (Electro-static Discharge) events. The diode is suitable for use as a clamp diode, where it is desirable to rapidly clamp transient over-voltages to a minimum value for protecting the components in the circuit. The Zener voltage can be used as a reference voltage in many circuits. It is also used in voltage regulators and as a mixer bias voltage. Additionally, it is suitable for ESD protection in automotive and consumer applications.

Conclusion

The MMSZ5246BS-7 is an economical, single-ended Zener diode with a wide range of applications. Its robust design and low leakage current make it ideal for use in voltage protection and voltage regulation circuits. The diode’s ESD protection and voltage clamping capabilities make it well suited for use in automotive and consumer electronics. The low power dissipation and maximum power ratings of the diode make it suitable for use in limited power supplies.

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