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YBZ3D13J is a high power planar silicon zener diode rated at 13V with 3W continuous dissipation capability. It features low dynamic impedance to maintain accurate output voltage under rapid load transients, excellent thermal stability enabled by the SMB package for sustained high power operation, and fast transient response to suppress repetitive overvoltage stress. The device is widely used in SMPS feedback control networks, regulated DC rails, industrial control electronics, and voltage limiting circuits requiring long-term stability.