I need help identifying these two IC's. They were in my father's electronics shop and I found them in a box. There are many of them. I searched the net and could not find any info at all so was hoping someone here would know.
Electronic – Identification help – hybrid chips
identification
Related Solutions
As suggested by Chris Stratton in a comment, the SMD code B3103 and the DFN package seen in the photo, matches a MOSFET:
Rectron RM35P30DN P-Channel Enhancement Mode Power MOSFET - datasheet link
From page 6 of the datasheet:
The missing component is a ferrite bead. Without a schematic, service manual or bill of materials, we can't possibly know the exact type of component is, and thus the current rating and impedance are unknown, and we can't suggest a replacement.
However, given that we know it only used to filter USB 5V power, feel free to put almost any ferrite bead there that is rated for 1A-2A and does not drop too much voltage. Or just put a 0R resistor, blob of solder, or a piece wire there to bypass it.
Just check first with a multimeter that there is no short circuit if the ferrite bead acted as a fuse and blew itself to pieces. However there is no sign of that, the damage looks purely mechanical, no blown component residue anywhere.
Best Answer
So looks like this is likely a hybrid with eight transistors. Function unknown. Possibly an 8-bit DAC or 8 way analog switch. The double H logo could mean Hitachi Hokkai Semicondictor.