1N4148WT-HF SMD Switching Diode Comchip Technology 1N4148WT-HF SMD Switching Diode features low reverse leakage, high stability, and fast switching, with a <,4nS (typical) reverse recovery time (Trr). This device has a 75V reverse voltage (VR), a 100V peak reverse coverage, and a 150mW power dissipation (PD). The Comchip Technology 1N4148WT-HF is offered in a compact, surface-mounted SOD-523 package, ideal for automatic insertion.