I was creating schematic from a pcb but could not understand what the component in the image is for.enter image description hereenter image description here

The name written on the component is L386. At first i thought that it is a voltage regulator like 1117 but when i checked it the left pin and the middle pin are shorted with resistor placed above it. Then i checked , maybe it was lm317 in sot223 package but such high value of resistor is present so it was ruled out. The resistor that is present on the other side and is of 640K

  • 2
    \$\begingroup\$ 640 kohms is an unusual value. \$\endgroup\$ – Andy aka Jun 20 at 13:30
  • \$\begingroup\$ Could it say 1386 instead of L386? Would it make sense to be a PNP transistor (2SB1386)? Since it is marked S1, which usually means switch, maybe they are using a PNP to do some switching? \$\endgroup\$ – evildemonic Jun 20 at 14:56
  • \$\begingroup\$ @Andy aka 4 its quite an unusual value. I could also not determine why it is being used here. \$\endgroup\$ – Prakhar Singh Jun 20 at 18:09
  • \$\begingroup\$ @evildemonic It is written L there. I also gave a thought about it that it might be a switch but a 640K resistor between its 2 pins is quite unusual. \$\endgroup\$ – Prakhar Singh Jun 20 at 18:11

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.