What is the color of the HIC card if the humidity is acceptable levels?
1. The humidity indicator spots will change from blue (dry condition) to pink (humid condition) as the relative humidity changes in the volume of air surrounding the indicator. 2. Relative humidity is indicated at the lavender color.
What is HIC in PCB?
A hybrid integrated circuit (HIC), hybrid microcircuit, hybrid circuit or simply hybrid is a miniaturized electronic circuit constructed of individual devices, such as semiconductor devices (e.g. transistors, diodes or monolithic ICs) and passive components (e.g. resistors, inductors, transformers, and capacitors).
What is a humidity indicator called?
Hygrometer. Dry/Wet-bulb temperature.
Are humidity indicator cards reusable?
The humidity card itself is reusable. When the humidity level is low, the dots will change from pink to blue again. With long use, the color of the dots may faint. Then, you can replace the card.
What is the purpose of humidity indicator?
To ensure dehydration measures work, humidity indicator cards measure the relative humidity (RH) inside sealed packages to allow immediate visual inspection of whether it has sustained unsafe humidity levels.
How does a humidity indicator work?
The ratio of moisture in the air to the highest amount of moisture at a particular air temperature is called relative humidity. Humidity sensors work by detecting changes that alter electrical currents or temperature in the air.
What is the indicator of moisture?
CuCl2/Silica Gel Indicator: A PH-sensitive dye on silica gel that contains no Cobalt. The indicators are able to show moisture from gross leaks in systems that introduce large amounts of water. The color change is yellow to blue-green, and will begin to change color with exposure to 4-6% Relative Humidity.
How do humidity cards work?
HOW DO HUMIDITY INDICATOR CARDS WORK? Humidity indicator cards are impregnated with a solution of cobalt chloride that has been carefully mixed to change color from blue through various shades of magenta – red, to a pink. enjoy a much longer and more reliable life if they are maintained at a very low relative humidity.
Which size is an IC?
At present, IC critical dimensions (or smallest dimensions of IC elements) are in the order of 10 nanometers (nm: 10-9m), which is extremely small.
What is humidity and its types?
Humidity is the amount of moisture or water vapour or water molecules present in the atmospheric gas. Here, we will learn about the humidity and its types viz: specific, relative, and absolute humidity.
What is humidity sensor?
A humidity sensor is a device that detects and measures water vapor. Based on our robust capacitive technology, these humidity detectors provide accurate measurement of dew point and absolute humidity by combining relative humidity (RH) and temperature (T) measurements.
What should the humidity be on a HIC card?
This card is reading that the humidity is certainly above 10%, probably around 20% The HIC should comply with MIL-I-8835 and, at a minimum, have three color dots with sensitivity values of 30% RH, 40% RH, and 50% RH. Proper packaging of the lead-free compatible PCB is critical.
What kind of humidity card does desiccare use?
Desiccare, Inc. manufactures a full line of Humidity Indicator Cards (HIC) which allows a low cost method of indicating humidity conditions for various types of barrier packaging, including MIL Spec (MIL-I-8835) applications. The 30%, 40%, 50% HIC cards complies with MS 20003-2. The 60% card complies with JEDEC Standard 033D.
What does the HIC card look like inside a bag?
HIC card on the top is outside the bag and shows the humidity is more than 50%. The card sealed in the clear bag along with small packets shows the humidity inside the bag is lower than 10% (all spots are blue). This card is reading that the humidity is certainly above 10%, probably around 20%.
Where do you put a humidity indicator card?
One humidity indicator card should be placed in the bag with the PCB’s. The HIC should be placed adjacent to the desiccant, not on top of the packet (s). The amount of desiccant should provide protection for a minimum of one year.