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The SMF200A is a high-voltage unidirectional TVS diode designed to protect sensitive electronic circuits from lightning surges and transient overvoltage events. Rated at 200W peak pulse power (10/1000µs), it features fast response time, low leakage current and excellent clamping capability. The compact SOD-123FL package enables space-efficient PCB layouts, making it suitable for industrial power supplies, communication equipment and DC bus protection.