January 05, 2023
Standardization requirements for production of SIM decks and SD decks
1. SIM card holder and SD card holder are requirements for the connection and information exchange of a large number of used SIM cards, SD cards and systems. SJ/T11166 is used as the general specification to specify the structure, dimensions, performance requirements, test severity, the latest version of the reference standard, to develop detailed specifications that meet the requirements, and to implement the standardization of the production of SIM card holders and SD card holders. Claim.
The SIM card (Subscriber Ldentity Model) is also called a smart card and a user identification card. The GSM mobile phone must be equipped with this card to be used. It can reliably guarantee the normal communication of users and prevent the concealment of calls and calls. Both China Unicom and China Mobile have issued SIM cards for mobile phone users. SIM cards are also widely used in bank POS terminals. Therefore, the corresponding SIM card holder has been extensively developed.
The Secure Digital MEmory Card (SD card) is a storage device based on semiconductor flash memory. Because SD card is small in size, light in weight, large in storage capacity, fast in data transmission, flexible in movement, secure in data, and structurally integrated, there is no need to worry about mechanical movement damage, making it in mobile phones, MP3 players, walkmans, digital video cameras, digital Cameras, notebook computers and other devices are widely used. Therefore, the corresponding SD card holders also have a large number of development SIM card holders and SD card holders should meet the requirements of SIM card, SD card and system link and information exchange. The enterprise shall establish product standards as required, and make provisions for the SIM card holder and the SD card holder.
2. Applicable general specifications
The IC card applicable to the socket specified in SJ/T11166 "General Specifications for Integrated Circuits (IC Card) Sockets" shall comply with the definitions specified in GB/T16649 "Identification Cards with Contact Cards" (ISO7816). The SIM card is the card, so the SJ/T11166 is a general specification for the SIM card holder.
Although the SD card holder is not a socket for the identification card, it has a similar structure and function as the SIM card holder, but the interface size is different, and the technical requirements are somewhat different. The SJ/T11166 can be used as the applicable general specification.
3. Structural size
The size of the structure, including the interface size and the external dimensions, must be standardized for any socket. The contact position and size of the identification card conform to the requirements of GB/T16649.2, and the position and contact orientation of the corresponding socket contact contact are specified in SJ/T11166. The contact position and contact range of the contacts specified by the actual SIM card size meet the requirements.
4. Conclusion
According to user requirements and the characteristics of SIM card holder and SD card holder, SJ/T11166 is selected as the general specification, which stipulates the structural size, external dimensions, performance requirements and the severity of the test method. The reference standard uses the latest version and the equivalent of the trajectory standard. According to the latest standards, the specifications of the SIM card holder and the SD card holder are prepared according to the latest standards, and the detailed specification is implemented in the production, and the standardization of the SIM card holder and the SD card holder is achieved. Environmental requirements are not specified in the detailed specifications, but it has become a consensus that all materials used in products must meet environmental requirements.
