NFC Coin Tag 10mm – NTAG213 Circular Mini NFC Sticker

A 10 mm NFC coin tag for very small objects

The ID-NFC-213-10 is a round NFC sticker only 10 mm across, built on NXP’s NTAG213 chip. It is made for one job: putting a tap-to-open NFC link on things where a standard 25 mm NFC sticker will not fit, such as a necklace clasp, a pen cap, an inhaler cap, a toy figure or a cosmetic tube. Any NFC-enabled Android phone or iPhone can read it.

What the tag can hold

NTAG213 gives 144 bytes of NDEF memory: enough for a web link, a short text or a simple contact record. Keep links short, using a short domain or link shortener, so they fit comfortably. After writing, a 32-bit password can protect the data from being overwritten, or the tag can be locked permanently so nobody can change your brand link.

Getting a reliable tap

A tiny antenna means a short read distance: 0–2 cm with a phone. Users need to touch the tag to the phone over its NFC antenna area, so a small printed tap icon near the tag helps. Avoid sticking it directly on metal, which detunes small HF antennas; use a spacer or an on-metal NFC tag there.

Sizing up the alternatives

If a narrow strip suits your product better than a circle, look at the 12 × 8.5 mm NTAG213 mini label, or browse all NFC tags. To write a tag yourself with a phone, see the NTAG213 programming guide.