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IC Manufacturer Web sites

• Analog Devices (op-amps, linear ICs)
• Fairchild Semiconductor
• Harris Semiconductor
• Linear Technology (Linear ICs)
• Freescale Semiconductor
• ON Semiconductor (formerly Motorola discretes)
• National Semiconductor
• National Semiconductor Power Supply Application Note (PDF)^#
• NXP Semiconductors
• Texas Instruments

Part Sources

• Alltronics
• Brigar Electronics
• DC Electronics (DC Kits)
• Digi-Key
• Electronic Goldmine
• Fair Radio Sales
• Analog Devices student sample site
• Future Electronics
• Gerber Electronics
• Herbach and Rademan
• Hosfelt Electronics
• Jameco Electronics
• MCM Electronics
• MECI Liquidation Outlet
• Mouser Electronics
• MPJA
• Newark
• NTE Electronics
• Ocean State Electronics
• Electronix Express Surplus
• American Science Surplus
• Small Parts
• Surplus Sales of Nebraska
• Antique Electronic Supply