Nano SIM card is also known as 4FF or 4th form factor. The Nano SIM card connector measures only 8.8mm x 12.3mm (.346" x .484") and has a 0.67mm (.026") thickness. The contact arrangement is identical to Mini and Micro SIM cards.
CH03-KB includes card stop functionality which prevents the Nano SIM card being inserted in an incorrect orientation,either upside down or the wrong way around. CH03-KB has a full metal shield and locating post for accurate PCB placement.