O- prefixes mean that the component was intended for internal use (not sold separately, except as a replacement part for an equipement).
Some are just standard parts selected for some parameter, others have a special, defined function and no equivalent.
IIRC, OF are diodes, OM or ON discrete transitors, OQ integrated circuits, etc
The only people that might have info available are staff of the repair centers, but since most of the divisions of Philips have disappeared, locating one is going to be difficult
Some are just standard parts selected for some parameter, others have a special, defined function and no equivalent.
IIRC, OF are diodes, OM or ON discrete transitors, OQ integrated circuits, etc
The only people that might have info available are staff of the repair centers, but since most of the divisions of Philips have disappeared, locating one is going to be difficult
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