I/O Linc Hardware differences between revisions.

[Brian H]

I had a chance to look at a few different hardware revisions of the 2450 I/O Linc Modules.

They use the same LNK354GN Switching Power Supply IC as the 2413 PLM and V2 Access Points.

C7 was the part I found changed. Between hardware revisions.

Hardware V1.0 0851:
C3  6.8uf/250V
C11 100uf/25V
C8  10uf/16V
C7  10uf/25V  25V rating was close to the 21VDC I measured on it.

Hardware V1.8 1202:
C3  6.8uf/250V
C11 100uf/25V
C8  10uf/16V
C7  10uf/50V Mounted horizontally over PCB. As it was large to fit the boards hole spacing.

Hardware V2.3 1430:
C3  6.8uf/250V
C11 100uf/25V
C8  10uf/16V
C7  220uf/50V Mounted horizontally over PCB. As it was large to fit the boards hole spacing.

My thoughts are.
In V1.8 C7 was changed to 10uf/50V for a better safety margin.
In V2.3 C7 was changed to 220uf/50V to beef up the power supply.
 

Updated incorrect revision from V1.6 to the correct V1.8

 

Change incorrect C ID for the 6.8uF/250V capacitor.