Description:

Lot of 5 vintage Motorola LM723CN adjustable voltage regulator ICs in DIP-14 package. Classic precision regulator controller used to build adjustable linear bench supplies and higher-current regulators with an external pass transistor. Marking shows “KKGX9124” (date/lot code). NOS surplus; stored loose as shown. Untested.

Modern uses:

- Adjustable linear bench PSU builds (2V–37V output range)

- Retrofit/repair of older lab gear, test equipment, industrial controls

- Custom analog power projects: current limiting, foldback protection, references

Compatibility note:

LM723CN is a standard LM723-family device; typically drop-in with other LM723/LM723C in DIP-14 when pinout matches. Verify required input range, external transistor wiring, compensation/stability parts, and temperature grade (“C” parts are usually 0°C to +70°C). Check the exact datasheet for your design before substitution.