Electrospec parts by Burndy, Motorola, Philips, National Semiconductor, Hitachi: SRAM4KX4 DIL20/P 35NS 20, DIL20-POL.PRZ, SUPPORT DIL20.3 LYRES, DIL20POL.PRAZ, DIL20POLPR#... to DILB14P14T

Manufacturers: Burndy, Motorola, Philips, National Semiconductor, Hitachi, SGS-Thompson ST Microelectronics, Harris, Micron, Toshiba, Intersil, Microchip, Advanced Micro Devices, RCA, Precision Monolithics Inc (PMI), Intel, TI Texas Instruments, Analog Devices, Atmel, Maxim, Fairchild, Sharp, Altera (EPROM), Mitsubishi, CORN, LEDTR, PMC Sierra, Matra (MHS), Goldstar, Linear Technology Corporation, Lattice, Acrian RF Transistor, Optek Technology (TRW), GE, Samsung, Fairchild Semiconductor, Temic, Mitel