Global Semiconductor Shortage

It’s affecting every industry out there in terms of production and consumer electronic device shortages. Many companies in the automotive sector have stopped their production lines and laid off people just because they can’t find a $5 chip to add to the product. When one part in a production line is missing, the entire line just stops. The major reason for the shortage is actually hoarding and overbooking of chips. When there was a demand surge late last year, most big companies out there started stockpiling (US-China tech war didn’t help either) which in turn increased the demand in the fabrication sector more. It’s a vicious cycle.

It’s like the time when COVID hit and people cleaned out entire aisles in the supermarket for sanitisers and TP, fearing it will run out. In all this, the biggest hit players will be the small companies, that don’t have larger order quantities. Personally, I have been hit severely along with the clients I work with. There are certain stable designs whose chips have current lead times of 1.5yrs or so. All of those would need a redesign and still, you can’t guarantee the newer designed parts will be in stock for long. Analysts expect this to go on for at least a year. But I do think it will take more than a couple of years to stabilise as chips which are getting hit are not the leading edge node ones but the ones with older nodes.
How are you planning on riding this out? Any tips?

Here is an interview I did with Electrical Department at IITB discussing this issue. Link 1, Link 2

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9V Battery Teardown

I was looking for a thin cylindrical battery for a project and thought of tearing down a 9V battery to repurpose its internal battery. To my surprise, I found a different stack inside it. I always thought (had opened one before) that these were made from six 1.5V cylindrical cells. This one seems to be a stack of six plastic pouches in series. A bit of googling helped me find that these are zinc-carbon battery pouches with a Zinc plate being the negative electrode, and the black brick (mixture of carbon + manganese oxide) being the positive electrode. Seems that manufacturers like Duracell go with the cylindrical cells and most others go with the pouch design. Learned something new today.

For those of you who do not know, most higher voltages in batteries are made by connecting smaller cells in series. Except for Lithium electrode batteries (which give cell voltages from 3V to 3.7V) most other known cell voltages range from 1.2V to 2V with usually 1.5V being the common one. This fundamental idea of increasing the overall battery voltage (by connecting in series) and increasing the battery capacity (by connecting in parallel) is the fundamental principle by which all batteries are made, ranging from the one powering your TV remote to the one in electric cars.

9V Battery Teardown
9V Battery Teardown
9V Battery Teardown
9V Battery Teardown

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