1N4148 datasheet, datasheets, pdf, circuit, alldatasheet, datasheet, Datasheet search site for Electronic Components and Semiconductors, integrated circuits, diodes ... 1N4148 from Semitronics Corp.. Find the PDF Datasheet, Specifications and Distributor Information. The 1N4148 and 1N4448 are high-speed switching diodes fabricated in planar technology, and encapsulated in hermetically sealed leaded glass SOD27 (DO-35) packages. 1N4148 1N4148PH or 4148PH 1N4448 1N4448 Fig.1 Simplified outline (SOD27; DO-35) and symbol. The diodes are type branded. Request NXP Semiconductors 1N4148: DIODE, DO-35,100V,200MA online from Elcodis, view and download 1N4148 pdf datasheet, Diodes - Small Signal specifications. Page 4.