ROHM Semiconductor today announced mass production technology for the industry's smallest 1608 (1.6mm × > 0.8mm) shortwave infrared (SWIR) devices for portable/wearable/hearing devices requiring material detection.
SWIR is characterized by a longer length wavelengths than near-infrared (NIR), providing greater penetration through various materials while being less susceptible to sunlight, smoke, and other particles. This technology is expected to expand the range of sensitive substances such as water/gas and glucose. On the other hand, until now most SWIR devices have been through-hole housing types for relatively large applications such as communications equipment and industrial analyzers. Therefore, there are very few surface mount products available on the market suitable for compact applications.
Because SWIR is used to detect the presence of substances and their constituents by exploiting the characteristics of water, ice, gases, etc. that absorb specific wavelengths, target applications include light sources for measuring blood oxygen saturation and devices for measuring blood glucose levels. the field of medicine and measurement of water and sugar content in fruits and vegetables in the food industry. Sensor applications using OLED panels in portable and wearable devices are also expected to add health monitoring and other new features.
In response, ROHM has created mass production technology for compact 1608 size surface mount SWIR (light emitting/receiving) products using manufacturing technology developed through mass production of complex semiconductors such as visible and near infrared. LEDs. For the light-emitting side, a line of ten LEDs is planned in various package forms (molded/lenses) and wavelengths (from 1050 nm to 1550 nm). And on the light receiving side, four models of photodiodes will be offered in different packages (size 1608/20125 (2.0 mm × > 1.25 mm)) and sizes of the photodetector unit.
SWIR (light emitter/receiver) product samples based on this technology are now available. In the future, ROHM will explore new areas of sensing, supporting a wider range of material detection in compact applications.