Smallest Round HF Inlay with Best-in-Class Performance

Circus NFC

Smartrac CIRCUS™ inlays & tags are designed to suit applications where small size and best performance are a must. NFC products are proper use for small stickers, key fobs and item-level tagging.


CIRCUS NFC inlays & tags are available with NXP’s NTAG210 Micro, NTAG213 and NTAG216 chips. CIRCUS with the NTAG210 Micro chip is a cost-efficient alternative where small size with 48 bytes of user memory is required, meeting the applications such as media advertising or collectable playing cards. It comes without additional features like UID mirror, password protection or fast read command, but provides programmable originality signature.


If a small form factor with large user memory is needed, then CIRCUS with NXP’s NTAG213 chip is a proven product of choice. It offers 144 bytes of user memory, and comes with unique ID (UID) mirror functionality, which enables the chip serial number to be mirrored as part of its encoded URL address. This feature allows every tag to be seen and read as unique from the application perspective, without requiring users to encode inlays with different numbers.


CIRCUS NFC products are based on the ISO 14443 A standard, and are compatible with NFC Forum standards. Smartrac’s inlays and tags are compliant with ISO 9001:2015 Quality Management and ISO 14001:2015 Environmental Management. This ensures a reliable and state-of-the-art product that meets a variety of application needs.


Operating Frequency

13.56 MHz

Integrated Circuit (IC)

NXP NTAG210 Micro



Antenna Size

Ø 20 mm (0.79 in)


Die-cut Size

Ø 22 mm (0.87 in)

Quality Assurance

100% performance tested

Fields of Applications

  • Retail Environment
  • Social Media
  • Games & Toys
  • Location
  • Loyalty Apps
  • Electronics Pairing

International Standards

  • ISO 14443 A
  • NFC Forum


  • Top performance for demanding NFC applications and item level tagging in retail applications.
  • Tiny-sized and cost effective NFC inlay with best-in-class performance.
  • Unique 7 byte serial number.
  • ISO 14443A and NFC Forum Type 2 Tag applications compliance.