C&D Technologies PWR1240 Integrated Circuit

The C&D Technologies PWR1240 integrated circuit is a 3 W, unregulated, isolated DC-DC converter module from the PWR12xx family, designed to deliver a compact, galvanically isolated 9 V rail on a circuit board. In the PWR1240C variant, a nominal 5 V DC input yields a fixed 9 V output at up to 333 mA, with roughly 45 mV peak-to-peak ripple and 500 V DC input-to-output isolation; the same 9 V/333 mA output is listed for accompanying PWR1241C variants with higher input voltages. The module is lightweight and compact, weighing approximately 0.10 lb, and is intended for board-level power isolation where space is at a premium and a self-contained 9 V supply is advantageous. As part of C&D’s 3 W DC-DC converter lineup, the PWR1240 series provides fixed-output, galvanically isolated power suitable for logic and sensor circuits in compact equipment designs.