Metal Can Technology & Applications

Metal can optoelectronics devices (LEDs and Photo detectors) offer characteristics that are unique to this technology and offer benefits not available in plastic molded LEDs and Photo detectors:

1. Hermetically sealed : these products are sealed to exclude moisture, and as a consequence operate reliability without degrading, as molded products will in moist environments.

2. Metal packaging: the metal bodies and glass lens are resistant to corrosion and will not release organic compounds in to the surrounding space. This is a key factor required for the reliable operation under such conditions, that molded devices cannot withstand. Particularly well suited for applications related to food and drugs industries.

3. immunity to radiation: the metal encapsulation makes the devices also practically immune to many types of radiation, particularly the UV radiation encountered in solar applications and other applications involving UV light(e.g. sterilizing and tanning appliances). UV light degrades plastic lenses.

4. Thermal resistance: the metal base contributes to a low thermal resistance that enables products to operate at high ambient temperatures (125°C) and higher currents, extending the operational life of the product. This effect is enhanced in some devices, by the use of a eutectic die attach process that reduces even more the thermal resistance.

5. Precise optics: the products are built from tight tolerance parts, in a highly accurate assembly process. These tight mechanical tolerances using high quality glass lenses result in products with exceptional optical characteristics with a higher repeatability, than is not apparent in molded lens devices. This is a major benefit for applications requiring high optical accuracy and repeatability allowing for worst case design to be achieved more easily than with broader distribution components.

6. The structure of these metal can products provide superior reliability and longer life expectancy due to the lower degradation, which is due to the hermetical seal and the better heat sink effect, which reduces the internal stress on the active chip and results in an exceptionally low rate of degradation with time, when compared to plastic components. This allows Engineers to design longer lasting applications with significantly less exposure to failure of the optoelectronics parts.

Photo interrupters Technology & Applications

1. Operating temperature range: -55°C to +100°C: this extended temperature range enables these products to be used in high temperature environments of industrial or automotive applications.

2. Capability to withstand reflow soldering conditions. Fully populated PCBs can be sent through the reflow process.

3. Multiple ICON bins for analogue output devices. This allows flexibility in the design of the application circuit, to optimize the power consumption, while meeting the output requirements in terms of signal level and switching speed.

4. Availability of logic output options: this option enables designers to simplify applications design and reduce component count.

5. Availability of darlington/high gain output : this option is particularly useful in low power consumption applications.

6 Availability of an integrated option(QVEO0112) which offers additional functionality benefits: integrated LED drive, logic output, fine resolution and wiring harness enabling the possibility of assembling the sensor remotely from the board it is electrically connected to.