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Y1ZD27 is a high reliability planar silicon zener diode rated at 27V with continuous 500mW power handling capability. It features controlled dynamic impedance to maintain predictable voltage regulation under varying load currents, efficient thermal dissipation for dense PCB layouts, and rapid transient clamping response to suppress repetitive surge events. The device is widely used in compact SMPS feedback networks, industrial control boards, regulated DC rails, and voltage limiting circuits requiring high stability in limited space.
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