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The SMF22A is a unidirectional transient voltage suppression diode engineered to protect 22V DC power systems from lightning-induced surges and switching transients. Rated at 200W peak pulse power with a 10/1000µs waveform, it offers fast response time, low clamping voltage, and stable electrical performance. The compact SOD-123FL package is ideal for industrial control, automation equipment, and DC power interface protection.