XP0121700L Discrete Semiconductor Products

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The XP0121700L is a specialized bipolar transistor array. It contains four common emitter NPN transistors fabricated in a single package. This device is designed to complement the XP0121700R series to form an available source/sink common emitter pattern for heavier loads.

The XP0121700L is a pre-biased version of the XP0121700R so its operating voltage is slightly reduced. This is ideal for applications where the output can be prone to static discharge. In combination with the XP0121700R, it serves as an efficient means to convert high power requirements or to provide a leaner output form of a conventional NPN transistor.

The emitter-base junction of each transistor in the array is prepolarized with a 2V zener diode and 0.1μF ceramic capacitor. This increases the baseisolation between the transistors, providing higher current carrying capability between the components. Additionally, it ensures that the array operates with a low-side configuration, which guarantees greater linearity, power efficiency, and noise immunity.

In its most basic application, the XP0121700L can be used to drive heavy loads, such as relays, lamps and solenoids. The pre-biased array ensures that the device can safely handle larger voltages and currents than a conventional NPN transistor array. Its flexibility also makes it useful for more advanced applications, such as AC output stages, converter driver circuits and battery charging circuits.

The XP0121700L also has a built-in protection circuit designed to reduce the risk of an unexpected power surge. When a voltage above a threshold level enters the array, the protection circuit will activate, keeping the device from being damaged. This is particularly helpful in applications that can experience voltage spikes or surges that could cause significant damage if left unchecked.

The XP0121700L is a versatile and reliable component that can be used in a variety of applications. Its pre-biased array ensures greater linearity, power efficiency, and noise immunity when driving heavier loads, and its protection circuit further increases reliability and safety.

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