Low temperature LCC chip carrier

In summary, the conversation revolved around the need for a LCC (low temperature measurement device) that can operate at 10K or 77K. It was mentioned that most commercially available LCCs can only operate at -70C and there is a lack of options in the market. The speakers suggested trying regular LCCs for 77K and testing them in LN2 to see if they work. They also mentioned that there may be specialized LCCs available at a higher cost.
  • #1
graysonchen
2
0
I need a LCC for low temperature measurement down to 10K or at least 77K. but I couldn't find any LCC capable of operating at that low temp. most commercially available LLC can only operate -70C. how you guys find a LCC operating below 77K? is it custom made?
 
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  • #2
We just used regular ones for 77K, they aren't rated for that but that's mostly because there isn't much of a market.

Buy a couple of different brands from the normal supplier catalogs, dump them into LN2 a few dozen times and see if any of them break. We found they all worked fine.

Of course if you have space mission budget there is probably somebody that will sell you exactly the same part with certification that it works at 77K - after they have done the same dunk test!
 
  • #3
OK. thanks a lot.
 

What is a low temperature LCC chip carrier?

A low temperature LCC (leadless chip carrier) is a type of package used to protect and connect integrated circuits (chips) to a circuit board. It is designed to operate at low temperatures, making it suitable for use in cryogenic applications.

What are the benefits of using a low temperature LCC chip carrier?

The main benefit of using a low temperature LCC chip carrier is its ability to withstand and function at extremely low temperatures. This makes it a valuable component in industries such as aerospace, medical, and scientific research where cryogenic temperatures are required. Additionally, the absence of lead in the package makes it more environmentally friendly.

How is a low temperature LCC chip carrier made?

A low temperature LCC chip carrier is typically made using a multi-layer ceramic or organic substrate. The substrate is then coated with a thin layer of metal, such as copper, to provide electrical connections. The chips are then attached to the substrate using wire bonding or flip chip bonding techniques.

What are the design considerations for a low temperature LCC chip carrier?

When designing a low temperature LCC chip carrier, factors such as thermal expansion, thermal conductivity, and material compatibility must be taken into account. The package must also be able to withstand the extreme temperature changes and thermal cycling that may occur in cryogenic applications.

What are some common applications of a low temperature LCC chip carrier?

Low temperature LCC chip carriers are commonly used in aerospace and satellite systems, cryogenic research and experiments, medical devices, and supercomputers. They are also used in quantum computing and other emerging technologies that require operation at ultra-low temperatures.

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