1PMT5950C/TR7

The 1PMT5950C/TR7 is a high-precision 5 milliwatt zener diode designed for use in a wide range of applications and operating conditions. The device is designed to maintain a constant, stable output voltage even under extreme temperature and supply voltage variations, allowing it to be used in a variety of situations that require such a capability. Additionally, it is able to withstand a maximum power dissipation of 5 milliwatts.

Applications

The 1PMT5950C/TR7 is well-suited for use in a number of applications where a stable, accurate reference voltage and good temperature stability are desired. It can be used, for example, as the main voltage reference device in linear voltage regulators and as a reference for voltage comparators. It can also be employed as a reference for HVAC applications and for power supply design. Additionally, it can be utilized to generate stable bias voltages for analog ICs, which can be used to guarantee continuous signal traceability.

Working Principle

The 1PMT5950C/TR7 consists of two main components: the diode and the transistor. The diode is responsible for establishing the voltage reference, while the transistor acts as a current limiter, preventing the diode from being damaged by current overloads.

The main mechanism behind the device\'s operation is the Zener voltage, a negative voltage, which is caused by the transient breakdown of the device\'s reverse-biased junction. When a current is applied to the diode, it begins to conduct, allowing electrons to break down the junction barrier and pass from anode to cathode. The Zener voltage is caused by the fact that the electrons entering the reverse-biased junction have a greater impact on the junction than those leaving it, leading to a sudden current overload and the production of a voltage spike.

Once this spike has dissipated, the diode remains in a conductive state, allowing a constant steady current to flow until the reference voltage is disrupted. This is done by either removing the current or limiting it with the help of the transistor. This configuration allows the device to produce a constant reference voltage over a wide range of input voltage and temperature variations.

Conclusion

The 1PMT5950C/TR7 is a high-precision 5 milliwatt zener diode designed for use in a wide range of applications and operating conditions. The device is well-suited for use in a number of situations where a stable, accurate reference voltage and good temperature stability are desired. It operates by utilizing a Zener voltage and the help of a transistor to limit current, allowing it to maintain a constant output voltage even under extreme temperature and supply voltage variations.