J2R110, J3R110, J2R150, J3R150, J3R180, J3R200 are JCOP4 series JAVA card is another pinnacle after J2A, J3A, J3D, سلسلة J3H, on the basis of ensuring high security and high performance, يتم زيادة سعة تخزين البيانات, and the Flash chip is used to make the computing speed of the chip faster and more stable. قبل JAVA سلسلة J3H (شامل), all of them used EEPROM chips, وبعد سلسلة J3R (شامل), they all used Flash chips.

J2R110, J3R110, J2R150, J3R150, J3R180, J3R200 chips are available in EMV and SecID versions. يستخدم النسخة EMV أساسا في المجال المالي; The SecID version is mainly used in the field of electronic identity, and the ECC algorithm and Gen Key encryption algorithm are used in the field of electronic ID card. في الوقت الحاضر, the J3R SecID series has obtained the CC EAL 6+ شهادة.
The RAM (i.e., trasient الذاكرة) of the J3R series JAVA cards is 4K, which is 0.8K more than that of the J3H series, and the APDU Buffer Size can be expanded even more.