Low-leakage double diode Epitaxial, medium-speed switching, double diode in a small SOT23 Surface-Mounted Device (SMD) plastic package. The diodes are connected in series.
High-speed diodes The 1N4148 and 1N4448 are high-speed switching diodes fabricated in planar technology, and encapsulated in hermetically sealed leaded glass SOD27 (DO-35) packages.