Why do electronic components have such odd values? (2021)

Re:Why do electronic components have such odd values? (2021) by xw390112 on Tuesday June 04, 2024 @04:01PM (#40578367)

These things all made sense before laser trim resistors. At even a modest volume you can get any value you want at better than 1% for basically no money.

Usually the minimum order is something like 10K parts (a.k.a. one reel) and you might pay something like $75 for it. $0.0075 per resistor.

https://www.ppisystems.com/ppi-systems-designs-and-manufactu...

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Re:Why do electronic components have such odd values? (2021) by neuralRiot on Tuesday June 04, 2024 @04:19PM (#40578530)

And before digital circuits. All I see now is 10k, 1k and 100 Ohm resistors.

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Re:Why do electronic components have such odd values? (2021) by xxs on Tuesday June 04, 2024 @04:35PM (#40578670)

Most resistor in power supplies would be different values. For digital stuff and low current applications (along with designated FET drivers) you dont need too much.

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Re:Why do electronic components have such odd values? (2021) by mb_72 on Tuesday June 04, 2024 @05:35PM (#40579180)

'Laser-trimmed resistors' will be the next selling point on a boutique guitar FX company's 57th clone of a Tubescreamer.

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Re:Why do electronic components have such odd values? (2021) by analog31 on Tuesday June 04, 2024 @06:13PM (#40579495)

Factored into the tolerance is the temperature coefficient, because the tolerance is specified over the operating range. There are also 3 basic temperature ranges: Industrial, automotive, and military. I've used this to my advantage by spec'ing automotive capacitors when I needed tighter tolerances for my normally room temperature applications.

They also laser-trim IC's.

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