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YAZ1P5D15 is a high reliability planar silicon zener diode rated at 15V with continuous 1.5W power handling capability. It features low dynamic impedance to maintain accurate output voltage under rapid load transients, excellent thermal stability enabled by the SMA package for sustained dissipation in dense PCB layouts, and fast transient response to suppress repetitive overvoltage events. The device is widely used in SMPS feedback control networks, regulated DC rails, industrial control electronics, and voltage limiting circuits requiring long-term stability.