Application of TO packaged helium leak detector

The full English name of TO is: Transistor Outline, which is a kind of transistor packaging designed to enable the leads to be formed and used for surface mounting.

As a packaged device, the entry of dust or water vapor under non-sealed conditions will damage the performance of the product, directly change the optical path of the product, and ultimately lead to functional failure. Therefore, it is very necessary to conduct helium mass spectrometer leak detection during production.

It is necessary to conduct a leak test on its own sealing performance. Since the packaged laser chip device is small in size and cannot be evacuated or filled with helium gas directly, the helium mass spectrometer leak detection of TO is basically carried out by the back pressure method, which is simple and reliable. That is, place the TO-packaged optical device in a container with a certain pressure, introduce helium gas for helium pressurization, remove the device after maintaining the pressure for a certain period of time, and transfer it to a vacuum container (leak detection tank) connected to a helium leak detector for leak detection. Determine whether the optical device meets the requirements of the packaging airtightness index through automatic detection.

The helium mass spectrometer leak detectors produced by Anhui Nuoyi Technology have been focusing on the leak detection industry for many years. The picture above shows Nuoyi's helium leak detector detecting the packaging airtightness of TO devices. Nuoyi's helium mass spectrometer leak detectors have been widely recognized by engineering personnel in the industry due to their convenient operation, excellent performance, high sensitivity, and ultra-stability, and the products are trustworthy.

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