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ST25TB Series NFC Tags


The ST25TB series of RFID tags are compatible with the ISO14443 standard, so support applications such as public transport and event ticketing. They provide state-of-the-art RF performance and include a counter able to count more than 4 billion events


  • ISO14443-2 Type B with Proprietary Protocol
  • 512-, 2K-, and 4K-bit EEPROM with write protect
  • Two 32-bit counters with anti-tearing feature
  • OTP bytes with conditional erased features 

ST25TB Series NFC Tags

Part Number Contactless RF Interface User Memory Capacity (b) Security Features (Reader and contactless memory) Password protection Operating Range Distance (m) typ Info
ST25TB02K ISO14443-B 2048 Counter 32-bit 0.1 Detail
ST25TB04K ISO14443-B 4096 Counter 32-bit 0.1 Detail
ST25TB512-AC ISO14443-B 512 Counter 32-bit 0.1 Detail
ST25TB512-AT ISO14443-B 512 Counter 32-bit 0.1 Detail



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Contact Us

RealSmart Technologies

R205, No.1768. Yishan Road, MinHang District, Shanghai 201103, P.R China

Tel: +86 21 6432 6941


Tel: +86 21 6432 6941