1SMB5940HR5G

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The 1SMB5940HR5G is a diode belonging to the single Zener category. It is designed to offer high-reliability voltage regulation through its reverse-breakdown of the Zener effect. This is achieved by allowing a specified current to flow against the direction of the reverse-bias voltage, which enables the creation of a stable voltage without the need for an external reference.

The 1SMB5940HR5G is mainly used for applications such as voltage regulation, voltage clamping, and overvoltage protection, amongst others. It is a low-power device, with a maximum power dissipation of 500mW, and a forward current of 9.09mA at up to 200V. Additionally, it is capable of handling an operating junction temperature range from -55°C to +150°C.

The 1SMB5940HR5G works by allowing the backwards flow of a limited amount of current. This voltage regulation is quite precise and is typically maintained within 1%. The device essentially works as a reference voltage source, allowing a regulated current to flow, and thus, a regulated voltage to be established at the load.

When the forward voltage bias is present, the device exhibits an ohmic behavior and behaves like a normal diode. But when the applied reverse voltage is higher than the Zener voltage Vz, the diode start passing a forward current due to the Zener breakdown effect.

The behavior of a 1SMB5940HR5G is a function of both the junction temperature and the magnitude of the reverse voltage. In order to maintain a voltage regulation within 1%, the device needs to operate with a high temperature coefficient.

In conclusion, the 1SMB5940HR5G is a single Zener diode that is mainly used for applications such as voltage regulation, voltage clamping, and overvoltage protection. It works by allowing a precise amount of current to flow against the direction of the reverse-bias voltage, which enables the creation of a stable voltage without the need for an external reference.

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