Secure Digital Card

[Jim]

If you see a sd card from the back the ninth pin (from the right) is shorter
than the others. On the card I've got, this pin (contact) is too short and
there was (a tiny) available gap for this contact to be extended (from the
manufacturer).
Is there any material that I could use to extend this pin just enough to
make contact with my device (e.g. liquid metal, metal glue ??? I used my
imagination here !! )
Thanks Jim.

 

[Don Bruder]

If you see a sd card from the back the ninth pin (from the right) is shorter
than the others. On the card I've got, this pin (contact) is too short and
there was (a tiny) available gap for this contact to be extended (from the
manufacturer).
Is there any material that I could use to extend this pin just enough to
make contact with my device (e.g. liquid metal, metal glue ??? I used my
imagination here !! )
Thanks Jim.

That pin is probably deliberately short. Without going into the exact
specs and related material, I'd bet it's the power pin, and it's
intended to be the last to make contact when inserted, and the first to
lose contact when removed.

You see a similar arrangement on USB plugs/sockets - two of the
connectors are significantly shorter than the others. Those two are the
power lines. The idea is to connect the data lines first, THEN power.

It would be my opinion that messing with extending the contact on your
card would be a bad idea for the health of either the card, or the
device it goes into.

 

[Jim]

Hi Don.
I see the line traces on my sd card contacts (that the pins of my device is
making onto the sd card), and it would not be a problem as the ninth pin
(even if I extend it) it would be far from reaching the same level of the
other contacts.
The problem is that I may destroy the door that holds the card (and the
batteries) because I have to add an addition back of the card (a kind of
sponge) to push the card down to make proper contact.
Thanks for your response, Jim.

That pin is probably deliberately short. Without going into the exact
specs and related material, I'd bet it's the power pin, and it's
intended to be the last to make contact when inserted, and the first to
lose contact when removed.

You see a similar arrangement on USB plugs/sockets - two of the
connectors are significantly shorter than the others. Those two are the
power lines. The idea is to connect the data lines first, THEN power.

It would be my opinion that messing with extending the contact on your
card would be a bad idea for the health of either the card, or the
device it goes into.

--
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[Ian Stirling]

If you see a sd card from the back the ninth pin (from the right) is shorter
than the others. On the card I've got, this pin (contact) is too short and
there was (a tiny) available gap for this contact to be extended (from the
manufacturer).

Why do you want to do this?