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Hi, here you can see 3-stage LNA circuit. I want to know information about two chips(6 pins) with R8 mark at the top. Also, 4 chips with D4 mark with 3 pins at right side. Is there anyone who has a good intuition of this?

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  • \$\begingroup\$ Can you tell us about the part that these components are in? Perhaps a manufacturer and model number for the overall board/assembly? \$\endgroup\$ – ζ-- Mar 11 at 2:13
  • \$\begingroup\$ It is made from MITEQ, and model name is IDM215A75-2020-140 \$\endgroup\$ – Tension Mar 11 at 3:07
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Maybe BCM857 dual BJT and HSMP3804 PIN diode. Maybe.

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  • \$\begingroup\$ Thank you so much! Your information helped me a lot. :) \$\endgroup\$ – Tension Mar 11 at 12:59

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