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HP-71B 4Kb (CMT32k FrontPort) Memory Module "Battery" - FRAM
02-02-2021, 02:59 PM (This post was last modified: 02-02-2021 03:18 PM by KimH.)
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KimH Offline
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RE: HP-71B 4Kb (CMT32k FrontPort) Memory Module "Battery" - FRAM
I had to try...

Took one of my precious 32k CMT Front-Port modules and cracked it open.

CMT actually built in 2 soldering pads, which fits with a SMD CAP - this time a 22uF 25v X5R

The profile of the 1206 I had in this value is a bit too tall, so a smaller would be better to get the lid back on. Only a datasheet can help here. The 1206 is referencing "footprint" only

Again, 20 minutes without being plugged in was no problem at all.

[Image: CMT32R-Small.jpg?raw=1]
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RE: HP-71B 4Kb (CMT32k FrontPort) Memory Module "Battery" - FRAM - KimH - 02-02-2021 02:59 PM



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