Everybody can help me identify this device in red circle.
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4 Answers
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Switching Diode CD4148WP，75V 150mA
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\$\begingroup\$ botong - Hi, Thanks for posting an answer. Where did the images come from? To comply with the site rule on referencing, details of the original source of copied / adapted material must be provided by you, next to each copied / adapted item. If the original source is online, please edit the answer & add the webpage/PDF/video name & its link (URL) (e.g. website name + webpage title + URL). If the source is offline (e.g. printed book / private intranet) then edit the answer & add full source details e.g. title, author, page, edition etc. More rules in tour & help center. TY \$\endgroup\$– SamGibson ♦Commented Dec 4 at 15:56
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\$\begingroup\$ (To be clear: I think you combined two images into one image in the answer here. If so, both of the original images must be correctly referenced, with the name of the original website (and ideally the webpage title) and the link to the original webpage/PDF/etc for each original image. If you want help to do it properly, then let me know. TY) \$\endgroup\$– SamGibson ♦Commented Dec 4 at 15:59
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Judging from the symbol underneath the device it's a diode.
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\$\begingroup\$ And R7 might not be the original component. \$\endgroup\$ Commented Dec 4 at 21:33
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Could be a TVS diode, hard to say without any more information. If right leg is going to GND, I'd say 85 % that is TVS or Zener diode.
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The mark only tells that it's a unidirectional component at first. Most of the time that means a diode of any type - not telling about the type of diode.
Could be small signal switching diode or a Zener or a TVS. You could desolder and measure a bit, or follow the traces to understand the schematic better.
