Protective cover for the SHT3x humidity sensors
Sensirion, the world’s leading manufacturer of humidity, temperature and flow sensor solutions, now offers a protective cover for selected humidity sensors of the SHT3x series. The SHT3x protective cover is an optional polyimide foil directly attached to the top surface of the sensor. It covers the SHT3x’s complete sensing area and thus acts as a reliable shield against pollution during SMT assembly of the sensor and subsequent processes, such as conformal coating or potting. The protective cover is designed to withstand multiple reflow soldering cycles. To enable correct sensor operation, it must be removed after assembly.
A flap on the cover extends over the outer dimensions of the sensor package on one side and is designed to allow the cover to be peeled off easily with tweezers. After peeling off, the sensor will operate as specified in the datasheet. All typical conformal coating procedures, such as brushing, spraying or potting, can be used as long as the protective cover is attached. The cover will effectively protect the sensor opening from direct exposure to these coatings and other possible pollutants during the production process. More details on contamination and a list of suitable conformal coatings can be found in the document “Handling Instructions for Humidity Sensors”, downloadable from our website: www.sensirion.com/humidity-download.
For more information on our SHT3x humidity sensors, please visit: www.sensirion.com/sht3x
Sensirion AG, headquartered in Staefa, Switzerland, is the world's leading manufacturer of digital microsensors and systems. The product range includes sensors for humidity and temperature, gas- and liquid flow, differential pressure as well as mass flow controllers. A world-wide network of subsidiaries with offices in the USA, UK, Germany, China, Taiwan, Japan and Korea supports OEM customers with tailor-made sensor system solutions for a vast range of applications. Main target markets include analytical instruments, consumer goods and automotive, as well as the medical and HVAC industries. Basis to all Sensirion products is the patented CMOSens® technology, allowing for intelligent system integration, with on-chip calibration data and a multitude of interface options incorporated. Sensirion is a certified supplier according to ISO/TS 16949.