The JonDeTech (www.jondetech.se) thermopile gives a direct, proportional voltage response when subjected to infrared light (thermal radiation) or heat. The sensor registers wavelengths from visual light up to the mid infrared region (at least 20 ?m).

The unique geometrical configuration where the thermocouple leads/legs are "vertically" arranged makes it possible to also use it as a heat flux or ΔT sensor, i.e. the heat gradient over the thickness (less than 0.2 mm) of the thermopile chip is actually measured.

The JonDeTech thermopile SMDs are robust and they can be used "bare", i.e. without protective housing such as a metal container.

Key Features of the Thermopile:
- The thermopile sensor is thin (0.17 mm) and bendable

- The sensors can be surface mounted to most PCBs

- The sensor measures the thermal gradient over its own thickness (perpendicular to the plane)

- The sensor can therefore be used to measure both thermal radiation and heat flux

- Standard module dimensions are 3x3 mm (JIRS3) and 5x5 mm (JIRS5)

- Specific detectivity in the range of D*=1e7 to 2e7 cm√Hz/W

- Voltage response to irradiance for 5x5 mm sensor area: Iv=>12 Vmm2/W

- Arrays of sensors can be mounted side-by-side on a PCB to create the required detector area

Details are available at http://www.jondetech.se/documents/products.html