AMS Technologies AG’s SD-330 and SD-250 compact thermoelectric cooling units are suitable for laser diode modules in medical and industrial applications with footprints between 50 x 100 and 124 x 130 mm. When the ambient temperature equals that at the laser mounting plate and more powerful fans are used, the solid-state devices offer a cooling capacity of up to 330 W without the use of water. The units, which include two 60-mm axial fans, a copper heat sink, six Peltier modules and a copper spreader and mounting plate, consume a maximum of 15 A at 24 VDC. Their parameters may be customized for various models and brands of laser diodes. Suitable temperature controllers are available from the company.