DFLZ12-7

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The DFLZ12-7 is a single Zener diode that is used for providing a stabilized voltage source output or for the regulation and clamping of voltage signals. The diode has a maximum power rating of 325 mW and is designed to operate within tight specified temperature ranges.

When used in an application as a lower than normal voltage clamp, the DFLZ12-7\'s zener region can be made to work as a voltage regulator, and the lower breakdown region can be used as a clamp during overvoltage events. When used in this fashion it is capable of protecting IC\'s, FET\'s and transistors from the potentially damaging effects of voltage surges. Inversely, when the diode is used in an application as an over-voltage regulator, the clamp portion of the diode will regulate voltage to safe levels under low breakdown conditions.

The DFLZ12-7, like other stress mode diodes, includes a local avalanche field that is generated upon forward bias avalanche breakdown in the opposite direction. This avalanche field dissipates any excess energy from the initial energy spike in the over-voltage condition, allowing the diode to safely handle wide ratio peak-to-peak pulses with a relatively lower power rating. This makes the DFLZ12-7 especially suitable for use in high frequency applications.

In circuits where one DC supply would provide multiple DC voltage levels, the DFLZ12-7 can be used to ensure that the correct output voltage is maintained even if the power supply voltage fades. This is achieved by using the diode in a series with the output voltage, so that the Zener breakdown voltage is achieved when the positive terminal of the diode is at a higher voltage than the negative. This ensures that the output voltage is maintained within a certain tolerance range.

The DFLZ12-7 can also be used to ensure that AC signals have a constant peak-to-peak voltage swing. The AC signal is first filtered through the DFLZ12-7, so that it may be clamped at a level higher than the maximum peak-to-peak voltage swing of the signal. With the proper application of voltage, the diode will be able to handle wide ratio peak-to-peak pulses, thus clamping the signal to the required peak-to-peak voltage level.

When handling high frequency or reverse bias conditions, the DFLZ12-7\'s thermal management should be taken into account. The diode\'s maximum reverse voltage rating should not be exceeded under these conditions. Furthermore, the diode can dissipate heat at a medium rate but should be provided some design considerations when exposed to temperature extremes. Under normal operation, cooling should not be necessary as the thermal resistance and power rating of the diode will be able to handle lower and more dissipation levels.

The DFLZ12-7 is a versatile and reliable single Zener diode that can be applied to a variety of applications, such as providing a stabilized voltage source output, protecting circuits from over-voltage conditions, ensuring correct output voltage levels and ensuring that AC signals have a constant peak-to-peak voltage swing. It is capable of operating within tight temperature ranges, and should be provided some design considerations when exposed to extreme temperatures. It is able to handle wide ratio peak-to-peak pulses, and its thermal resistance and power rating make it suitable for medium dissipation levels.

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