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5pcs per pack of L78L33ACZ 3.3V linear voltage regulator in TO-92 package. It outputs stable fixed 3.3V voltage with excellent ripple suppression and built-in overcurrent, overheat protection function. Standard through-hole TO-92 form factor is easy for hand soldering and circuit prototyping. Ideal for providing stable power supply to single-chip microcontrollers, sensors, small electronic modules and various low-voltage DIY circuit projects.