Specification :

SLE5542 card is one of the mostly used contact memory card in security area, use as hotel key card, pre-payment etc. SLE4442 is original from Infneon.
About the IC module:

-Intelligent 256-Byte EEPROM
-Write Protection function on unique manufacturer code to identifcation of application.
-Programmable Security Code
-EEPROM Endurance minimum 100, 000 erase / write cycles
-Minimum of 10 years data storage time
-Contact confguration and serial interface in accordance to ISO standard 7816
Key Feature of SLE4442 Card:

Dimensions: CR80 85.60 x 53.98mm
Thickness: 0.84mm
Material: PVC, PET
Card Surface: Matte/ gloss finish
Housing: Lamination
Operating Temperature: -20 to + 60° C
Stockage Temperature: -20 to + 65° C
Printing Option:

Full color offset printing
Silk-screen printing
Silver/ Gold silk-screen printing background
Options on standard card:

Magnetic Stripe Option: 300oe, 2750oe, 4000oe
Numbering
Barcode printing
Signature panel
Embossing
Encoding: