A picture shows you how to choose an electronic moisture cabinet
The most commonly used material storage equipment in the electronics manufacturing industry is the electronic moisture-proof cabinet, especially the high-density and high-integration development of large-scale integrated circuits. A large number of new micro-smart chips of different specifications and models are integrated into smaller platforms. Even the veteran craftsmen of some established manufacturers have no way to fully understand how all the chip materials should be selected for proper electronic moisture-proof cabinets for storage. Here, as a senior electronic moisture-proof cabinet manufacturer of temperature and humidity equipment, Just use a few pictures to tell everyone how to choose an electronic moisture cabinet.
1. First of all, we must understand these chips, why materials should be stored in electronic moisture-proof cabinets, and what is the specific use of electronic moisture-proof cabinets. As the name implies, the electronic moisture-proof cabinet is dehumidified and dried by electronic dehumidification technology. Of course, it can be baked by the oven to achieve the purpose of dehumidification and drying. However, the microchip itself is a complex polymer of various material processes, high temperature. The influence of the environment on them is always existed and irreversible, and the electronic moisture-proof cabinet captures gaseous water molecules through electronic dehumidification technology, which belongs to physical dehumidification, is carried out under a normal temperature environment, and integrates with chip materials and the entire chip. Circuit polymer has no effect, here, chip, integrated chip using electronic moisture-proof cabinet to dry storage, an important reason is that they are all temperature and humidity sensitive components, easy to absorb moisture, for their storage is around "J -STD-033" comes from this specification, and in this specification, these chips are clearly graded according to humidity sensitivity. Let's look at this table:
That's right, you can use this table to determine which electronic moisture cabinet to use. For example, in your integrated circuit, the chip level is 2a, then you need to select the corresponding table according to the thickness of your chip and the number of pins. Then, find the corresponding humidity level above the infinity corresponding to level2a, such as pin <84pinS, select the humidity control range is <50% RH level electronic moisture cabinet is the best choice, if you have a bunch of chips, level2a, also level3 There are also level4, then you need to select all, then choose the lowest humidity requirement to meet, for example, the highest requirement is 10% RH, then you need to use 10% RH humidity level electronic moisture-proof cabinet, is it very Simple, but the question is coming, how do you know your own?
What is the chip material that belongs to the level? Then look at the picture below,
That's right, this is the content on the top of the bag when the material comes in. Look at the top right corner, the big LEVEL, the box below will tell you that your chip material is level. Well, you can choose the electronic moisture-proof cabinet according to these. However, I need the humidity to be 40% RH. There are 1-60% RH and 20-60% RH on the market. How should I choose, is it right? Choose the best 1-60% RH, whether it is 1-60% RH or 20-60% RH humidity level electronic moisture cabinet, can only store chip materials with the same humidity requirements, for example, you need 40% RH electronic moisture-proof Cabinet, then you can buy 20-60% RH, some people think that 1-60% RH is not better, so you can put higher requirements, in fact, this principle can be understood as all purchase 5% RH's electronic moisture-proof cabinet is good, the province's choice, the problem is that the lower the humidity level, the more expensive the price, not cost-effective, and the higher the storage requirements of the chip material, the more expensive the price, the general high humidity level, for example 1-10 %RH's electronic moisture-proof cabinets are fully automatic. By default, the humidity will be dehumidified to a minimum. If 1-60% RH is selected, if the humidity is adjusted to 20% RH by mistake, then all the chips required for 10% RH storage are required. If you hang this loss, it will be big. Therefore, the manufacturer of electronic moisture-proof cabinets will have a humidity level of 1-10% RH, 10-20% RH, 20-6. 0% RH is divided, and it also forces customers to use the counters exclusively, without mixing and mixing. Personally think that it is reasonable to purchase according to this level, and will not cause the problems mentioned above.
The above is to tell everyone how to choose the electronic moisture-proof cabinet tips, friends who are interested in the specific chip storage specifications can download the latest J-STD-033C storage specifications for temperature and humidity sensitive components on our official website for free.
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