I'm trying to identify and find analog for the smd component on a PCB. The PCB is a an engine control unit from Mersedes W168. The unknown component is a 2-pin polar component in the red circle. The approximate size is 4.3*3.1 mm2. The label on the cover is "LP 27 L#" (where # is a symbol I cant recognize ). I am not 100% sure if the first letter is actually "L" since the cover is damaged. I did the search of the label but didnt find the exact match. So far I suspect that this is some diode for 27 V. Does anyone have any better ideas?
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\$\begingroup\$ May be useful context: the neighboring/connected part is a mm.digikey.com/Volume0/opasdata/d220001/medias/docus/1079/… \$\endgroup\$– Tim WilliamsCommented Jun 28 at 10:57
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\$\begingroup\$ hm thanks for the tip! I will check this line \$\endgroup\$– iu-mCommented Jun 28 at 11:03
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\$\begingroup\$ @TimWilliams got an idea basing on your comment - the base of VND10BSP is actually Vcc for 26 V. The SMD may be a voltage stabilizer for 27 V for instance. I just need to check if the other side of the smd is actually the GND. Does it make sence? \$\endgroup\$– iu-mCommented Jun 28 at 11:10
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\$\begingroup\$ The device limit is 40V, so it seems likely the diode is a TVS limiting supply to somewhat less than that. 27V would be fine for the device, though I don't know if that makes sense with the rest of the circuit. I don't recognize the diode offhand I'm afraid, but the purpose, and voltage rating, seem plausible. Also, those poor tantalums, placed on a low impedance supply :( \$\endgroup\$– Tim WilliamsCommented Jun 28 at 11:30
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\$\begingroup\$ @TimWilliams Thank you for the help! I agree that some TVS seem to be the most likely candidate. I think I will go ahead with this. \$\endgroup\$– iu-mCommented Jun 28 at 11:55
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should be a P6SMB27A diode in SMB package from FAGOR
No picture found but the following diagram shows the typical marking:
The logo of FAGOR is visible when zooming in your picture (not a # but a F).
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\$\begingroup\$ Thank you a lot for the exact match! Indeed I didnt recognize the symbol at all and just put # \$\endgroup\$– iu-mCommented Jun 28 at 11:57
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1\$\begingroup\$ Hah nice coincidence, 27th week on a 27V diode. \$\endgroup\$ Commented Jun 28 at 13:40
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\$\begingroup\$ @TimWilliams Yep indeed a surprising coincidence. Just imagined the component could have been from December batch:) \$\endgroup\$– iu-mCommented Jun 28 at 13:58