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QRV08 - IC4/5 and IC 8/9 LM431 must be populated?

Started by mabu0815, October 15, 2015, 02:06:45 PM

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mabu0815

Hi PA,

I have a question regarding QRV08:

- IC4/5 and IC8/9 the LM431 is not seen on the picture of the populated board and in the BOM there is no order No. given/marked as "not used".
In the circuit diagram they are shown as both installed.
Can they be omitted?

Thanks

Sven

peranders

The IC5 and IC9 are TO92 type, hole mounted. You only need one of the parts, SMD or TO92.
/Per-Anders Sjöström, owner of this forum

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mabu0815

Hi,

Ok, I see. Thank you.
As far as I can see, Elfa now has the SMD part offered: 73-285-40

Sven