
It was originally designed as a standard for memory-expansion cards for computer storage, the existence of a usable general standard for notebook peripherals led to many kinds of devices being made available based on the form factor, including network cards, modems, and hard disks.
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Drawing download

T-Flash Card Connector/Micro SD Card Socket Connector
Electrical performances
Contact Current Rating:0.5A
Dielectric withstanding voltage: 500 VAC for one minute
Contact resistance: 40mΩ max
Insulation resistance: 1000mΩ min
Material
Insulator: high temperature thermoplastic
Flammability Raring: UL94V-0
Contact: Copper Alloy
Cover: stainless
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SIM Card 2.54mm 6P Connector
Material
Housing : HITemp plastic UL 94V-0 Rated
Contact area: Copper Alloy
Solder area: Copper Alloy
Electrical performances
Contact resistance: 100m Ω max.
Withstanding Voltage : AC500V r. m. s
Current rating: 0.5A
dielectric strength: 500V min
Insulation resistance: 1000m Ω min
Climatic characteristics:
Operation temperature: -40 to +60
Mechanical specifications:
Mechanical lifetime: 5000 mating cycles min