AMS Technologies’ SD-330 and SD-250 compact thermoelectric cooling units are suitable for laser diode modules with footprints from 50 x 100 up to a maximum of 124 x 130 mm in medical and industrial applications. The solid-state devices omit the need for water cooling, reducing fan noise. Cooling capacity is up to 330 W when ambient temperature equals the temperature at the laser mounting plate. Using two 60-mm axial fans, a copper heat sink, six Peltier modules and a copper spreader and mounting plate, the units’ maximum power consumption is 15 A at 24 VDC. They may be customized for various models and brands of laser diode modules, fans and power supply parameters. Suitable temperature controllers are available from the company.