SIM card 6 pin in a 8 pin socket?

[hmmpic]

Hi
Yes this is off topic!
I have a normally 6 pin SIM card, will this fit in a 8 pin socket?
Digikey and Mouser have lot of 8 pin socket push-push, but not so many 6 pin socket.

[Ttelmah]

No, you can't use the larger for the smaller, it'll short the intermediate pins.
The reason it is rarer, is that basically only Motorola use the 6pin standard, when the 8pin one is used by just about everyone else.

[FvM]

There's only one standard for telecom SIM cards. It defines 6 electrical contacts and 2 unused
optional contact positions. The optional contacts are e.g. used for interchip USB with special cards.

For regular applications, both 6 and 8 pin sockets can be used.

[Ttelmah]

Motorola have their own SIM design in some kit. I have it here. It has just six contacts sitting where the eight contacts sit on a standard SIM. It is rare, but is used on some of their specialist kit. I assumed this is what the poster had. You can 'force fit' the SIM into a standard socket, and it then shorts the pin pairs. I've seen it done. It was also used on their own early phones, before they standardised.
The standard SIM's are ISO7816. If this is what he has, then a 6pin device will fit an eight pin socket fine.

Best Wishes

[FvM]

[Ttelmah]

Quite probably. I just went looking for Motorola 6pin SIM sockets.
If I was wanting the socket to match the 'oddities', I'd sit down and use a caliper to get the sizes, pin spacings etc., and then go searching.

I've actually got a total of five different SIM designs here. The key is if you say 'telecom SIM', or 'ISO SIM', then it avoids these.
A couple are used for software on marine kit, where I suspect they wanted to 'avoid' being standard. A couple are early designs, that pre-dated the standard appearing. The other one is very definately done on the basis it increases security.

I must admit, I was 'possibly 'misled', since if you just read the paperwork for the 'standard' SIM design, it is very plainly stated that there are six main pins, and two normally NC, which makes the question 'self answering' if these are what is involved.

Best Wishes

[hmmpic]

Hi
Thanks for all the reply.
What I still dont understand is: All my card for is 6 pin card. The card in my Galaxy 3s is a 6 pin card too.
If most of the card is 6 pin, why is there 4 times 8 pin slot for sale at Mouser and Digikey?