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Can someone help me identify a couple ofSMD components?

Both are from analog circuits.

The first package marking is 50W. I'm assuming that it is a JFET, but I'm not sure.

enter image description here

The second one is marked A6. I'm assuming that this is BAS16 diode, but the package looks not so usual to me.

enter image description here

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  • \$\begingroup\$ What is the surrounding context? i.e., what device are these a part of, are they part of power supply/digital signal chain/analog signal chain/RF path/etc? \$\endgroup\$
    – nanofarad
    Apr 27, 2022 at 19:34
  • \$\begingroup\$ Fully analog signal chain. \$\endgroup\$
    – Kirill
    Apr 27, 2022 at 19:40
  • \$\begingroup\$ The first one is from a function generator. And second from the audio equalizer, filter. \$\endgroup\$
    – Kirill
    Apr 27, 2022 at 19:40
  • \$\begingroup\$ Thanks for updating, also interested in knowing the answer \$\endgroup\$
    – nanofarad
    Apr 27, 2022 at 19:43
  • \$\begingroup\$ Consider the possibility that A6 is a capacitor, non-polarized, perhaps 1uf ? \$\endgroup\$
    – glen_geek
    Apr 27, 2022 at 23:34

2 Answers 2

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According to the same website (https://embedeo.org/smd_codes/), the diode can be either UMA6N, FMA6A, BAS216, BAS316 or MMBD4148 ... but when looking at packages it looks like BAS216 from NXperia is our best match :)

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The SOT23 package looks a lot like https://www.nxp.com/docs/en/data-sheet/PMBFJ308_309_310.pdf (see section "Marking Code)

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  • \$\begingroup\$ Thank you, looks correct. May I ask, where are you found the information, or do you already know this component? \$\endgroup\$
    – Kirill
    Apr 27, 2022 at 19:55
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    \$\begingroup\$ I used embedeo.org/smd_codes, and then when looking at picture : ebay.com/itm/152974650375, but the number on the vertical is not the same ... but I guess this is just some version number as I saw different pictures with different numbers \$\endgroup\$ Apr 27, 2022 at 19:57
  • \$\begingroup\$ Got it, thanks for the additional information. Yes, I believe that vertical marking usually indicates the manufacturing date or something like that. And according to datasheet letter W- is for manufacturing country (China in this specific case) \$\endgroup\$
    – Kirill
    Apr 27, 2022 at 20:01
  • \$\begingroup\$ yes it is made in China \$\endgroup\$ Apr 27, 2022 at 20:02

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