Confirm that your moisture barrier bags and desiccants have done their job by adding a humidity indicator card (HIC) to each package. Moisture sensitive spots on the HIC respond to various levels of humidity with a visible color change from blue to pink. Examining the card when you open the bag will indicate the humidity level components are experiencing, and determine whether the components are dry enough for solder reflow. Two HICs to choose from. Designed specifically for use in dry packaging SMDs, the 4-spot card 4HIC100 monitors the most critical range of humidity at an economical price. It has a color reference bar that assists in accurate readings of the humidity level and complies with EIA 583. Six-spot card 6HIC200 is used in a variety of dry packaging applications. This card monitors humidity levels across the widest range and complies with EIA 583 and MIL-I-8835.

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