4 March 2010

Thermoelectric Units Eliminate Need for Water Cooling

Suitable for laser diode modules used in medical applications, the SD-330 and SD-250 solid-state thermoelectric cooling units from AMS eliminate the need for water cooling.

Buyer’s Guide 2010 Update: Electrical/Electronic Components

The powerful SD-330 and SD-250 thermoelectric cooling units from AMS Technologies AG are suitable for cooling laser diode modules in medical and industrial applications. These reliable solid-state units eliminate the need for water cooling. User benefits include safety, reduced fan noise, and cooling output as high as 330 W.

AMS developed the SD-330 and SD-250 for laser diode modules having footprints ranging from 50 x 100 mm up to 124 x 130 mm. With two 60-mm axial fans, a high-performance copper heat sink, six peltier modules, and a copper plate for heat spreading and mounting, they nevertheless are compact units. The thermoelectric coolers are 162 mm wide and 182 to 188 mm long, depending on the fan being used; their height is 92 mm. Thus, they take up little space underneath the laser diode module.

Using the more powerful fans, these devices achieve a cooling output of 330 W when the ambient temperature equals that of the laser mounting plate. With their high cooling capacity comes low energy consumption. Maximum power consumption is 15 A at 24 V DC.

The objective behind this development was to construct a particularly reliable means of cooling laser diode modules that would offer a sufficient safety margin in the event of a rise in ambient temperature or if efficiency dropped at some point within the laser system as a whole.

For further information:

AMS Technologies AG
Martinsried/Munich, Germany
www.ams.de