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7 votes

Identify an IC labeled LB21

It is a LM317LIPK from Texas Instruments (marking "LB", "21" is a datecode). Picture from lcsc:
vivier's user avatar
  • 931
2 votes

Matching SMD footprints to transmission line track width

Given the frequency range of interest and that the track is thicker at my capacitor, should I expect to see reflections or impedance mismatch? At 1-2 GHz, this effect is typically considered ...
The Photon's user avatar
  • 131k
1 vote

Is there flux that doesn't brown under heat?

It's usually called "crystal" flux, though that might just be me remembering a brand name. Usually no-clean, for obvious reasons.
vir's user avatar
  • 19.7k
1 vote

How do I identify SMD components? (or how do I identify any component)

Micron provide a Micron FBGA and component marking decoder which looks up their FBGA marking code. E.g. just searched for the RW167 FBGA code for what thought ...
Chester Gillon's user avatar

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