{"title":"Micro NFC/RFID Transponder - NTAG203 13.56MHz","handle":"micro-nfc-rfid-transponder-ntag203-13-56mhz","url":"/products/micro-nfc-rfid-transponder-ntag203-13-56mhz","description":"A micro-sized NFC/RFID transponder built around the NXP NTAG203 chip operating at 13.56 MHz. Its tiny, flexible form factor makes it ideal for embedding into rings, wearables, keychains, and other compact devices where full-sized NFC tags won't fit.\n\nThe tag provides 144 bytes of read-write memory and is compatible with PN532-based readers as well as NFC-enabled smartphones and tablets. Due to the small antenna, the tag must be placed very close to the reader for reliable communication.\n\nKey Features\n\n\nNTAG203 Chip – 13.56 MHz NFC/RFID transponder\n\n144 Bytes Memory – Read-write accessible storage\n\nMicro Form Factor – Extremely small and flexible\n\nPassive – No battery required; powered by the reader's field\n\nWide Compatibility – Works with PN532 readers, NFC-enabled phones, and tablets\n\n\nSpecifications\n\n\nChip: NXP NTAG203\n\nFrequency: 13.56 MHz\n\nMemory: 144 bytes (read-write)\n\nProtocol: ISO 14443A\n\n\nIdeal For\n\nDIY NFC rings and wearables\nEmbedding in small objects and enclosures\nSmartphone automation triggers (URLs, commands, device unlock)\nAccess control and identification projects\n\n\n\nNote: The small antenna requires very close proximity to the reader for reliable reads.\n\n\nPackage Contents\n\n1× Micro NFC/RFID Transponder (NTAG203)\n","vendor":"Adafruit","product_type":"physical","in_stock":false,"options":[],"variants":[{"id":10900,"title":"Default Title","sku":"AF-2800","price":5.75,"on_sale":false,"in_stock":false,"available_quantity":0,"option1":"Default Title"}]}