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Problem identifying a component value Conext 60 150 MPPT charge controller.

Ron Bailey

Feb 17, 2021
2
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Feb 17, 2021
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I am trying to replace what I believe to be a Schottky Rectifier.
The black line circling the 4 schottkys is where I am working.
I cannot find any info online, or a schematic for this unit.
I would like to select a suitable replacement.
Thanks for any help
Update:
I removed the suspect component and it seems to work as it should.

My controller boots up and looks normal except it shows no amps or watts coming in from solar.
 

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73's de Edd

Aug 21, 2015
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https://datasheet.octopart.com/10BQ040PBF-Vishay-datasheet-9803539.pdf


Page 2 . . .at end of . . . . THERMAL - MECHANICAL SPECIFICATIONS . . .re the assignmeent of the Vf1 marking code.

Looks like you have 4 green pass transistors and their associative / isolative Surface Mount steering diodes .
If using a DVM's "diode test" mode, with its meager test current being utilized, looks like 400-500 mv might be in order, in considering the upward sliding spec of a more typical 1A and 25-125 deg temp shift in real time operating conditions.
PLUS . . . . . that photo is far too small and of too poor of definition to extract any meaning from it, as well as the omitted other board side.
 
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