(Topic ID: 237500)

Fish tales no 5 volts

By gameover1173

5 years ago


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Topic Stats

  • 25 posts
  • 8 Pinsiders participating
  • Latest reply 5 years ago by barakandl
  • Topic is favorited by 2 Pinsiders

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#8 5 years ago

How are you testing an LM323K out of circuit?

#10 5 years ago

But the LM323K is not a transistor - it's an integrated circuit.

#22 5 years ago
Quoted from Pin_Guy:

There are, and many are of them are of poor quality ... I actually have mixed feeling on this subject as while I would love to purchase parts manufactured to original specs from whomever holds the mfg. rights, the facts are that many of these parts are only available as counterfeits coming out of China. ..

LM323K's were originally crated by National Semiconductor. Several companies jumped on the bandwagon and created their own versions. But one by one, they were discontinued.
National Semi is now owned by Texas Instruments. And now the sole surviving company to make LM323K's is Texas Instruments.
From TI - the LM323K is still an active part, they are still made and can be readily purchased. Downside - they cost approx $50 each.
That is why parts such as the PSU5V (forgot actual part number) is popular. Same footprint, much lower heat and much lower cost.

When ST Microelectronics put out a last time buy - I bought several cases of LM323K's. Unfortunately, I should have bought far more. 20/20 hindsight is a wonderful thing... I also should have bought a metric shitload of 7404's when TI was dumping them at 5 cents each.

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