Filter Membrane Cover Option Enhances Popular Humidity Sensors

Sensirion now offers an on-package filter membrane option for selected humidity sensors in the SHT3x series.

The membrane is a PTFE film that protects the sensor opening from water and dust according to IP67. It allows sensor use under harsh environmental conditions, where spray water and high exposure to dust is challenging for accurate sensor performance. The membrane cover is attached to the sensor package by a double-faced adhesive tape, which is designed to stay on the package over the lifetime of the sensor. The whole package withstands multiple reflow cycles. All humidity sensors in the SHT3x series feature increased intelligence and reliability, two distinctive and user-selectable I2C addresses, and communication speeds of up to 1 MHz.