Technical characteristics of the different types of NFC Tags

You can find different types of NFC Chips on Shop NFC, that can be grouped in 3 categories: Mifare or Mifare-compatible, Ultralight, NTAG Series.

In general, NTAG Series are compatilbe with every NFC device.

The Operative Frequency of NFC Tags is 13.56 MHz.

NFC Tags does not work on metal surfaces. If you need to use the NFC Tags close to metal, you should choose the On-Metal NFC Tags which are specially made for this purpose.

To better understand the technical characteristics of the different types of NFC Tags, please refer to the following tables, which will help you to better understand what kind of Tags you need.

See Also:

Technical specifications of NTAG NFC Tags

Total capacity (1)168 bytes164 bytes180 bytes540 bytes924 bytes
Available memory (2)137 bytes128 bytes144 bytes504 bytes888 bytes
URL length (3)132 characters122 characters132 characters492 characters854 characters
Text length (4)130 characters120 characters130 characters490 characters852 characters
V-Card Fields (5)4-53-44-59-1010 +
Why choose this chipGreat for everything, from marketing to task launcher apps.Better performances, very high scan strength, faster reading speed, wider reading range. Perfect for every use. Great chip, very versatile.
It is expected that will replace the predecessor NTAG203.
Good memory, even if smaller than NTAG216.The latest chip, with higher capacity and high scan strength. Perfect for V-Card or other uses that require high storage.
NFC Forum Specifics (6)Type 2Type 2Type 2Type 2Type 2
Cryptography (7)NoNoNoNoNo
Serial Number (UID) (8)YesYesYesYesYes
Universal Compatibility (9)YesYesYesYesYes
Password Protection (10)NoYesYesYesYes
Scan CounterNoNoYesYesYes

Technical specification of ICODE SLIX (ISO 15693, ISO 18000)

Total capacity (1)32 bytes112 bytes160 bytes316 bytes
Data Retention50 years50 years50 years50 years
Write Endurance100.000 cycles100.000 cycles100.000 cycles100.000 cycles
Why choose this chipInventory, supply chain management, asset tracking, automation.Inventory, supply chain management, anti-counterfeting.Inventory, supply chain management, anti-counterfeting.Inventory, supply chain management, anti-counterfeting, asset tracking, ticketing.
NFC Forum Specifics (6)Type VType VType VType V
Password protectionNoNoYesYes
Serial Number (UID) (8)Yes (8 bytes)Yes (8 bytes)Yes (8 bytes)Yes (8 bytes)
Universal Compatibility (9)NoNoNoNo


Technical Specifications of other types of NFC Tags

 Mifare 1kMifare 4kUltralight
Total capacity (1)1 kb (1024 bytes)4 kb (4048 bytes)64 bytes
Available memory (2)716 bytes3440 bytes46 bytes
URL length (3)256 characters2000 characters41 characters
Text length (4)709 charactersabout 3000 characters39 characters
V-Card Fields (5)9-1010+1-2
Why choose this chipUses that require Mifare stantard, or cryptography, or higher storage.Uses that require Mifare stantard, or cryptography, or even higher storage.Cost effective, short URLs, smart poster and general NFC use.
NFC Forum T2 (6)NoNoYes
Cryptography (7)YesYesNo
Serial number (8)YesYesYes
Universal Compatibility (9)NoNoFormat could be needed



  1. Total capacity: is the total memory of the Tag. Part of it, however, is not writable, as required for some functions.
  2. Available memory: the actual memory you have to write data to the NFC Tag.
  3. URL length: The maximum number of characters that a link on this Tag can contain, net of the 'http://www.'
  4. Text length: The maximum number of characters that you can write on this NFC Tag.
  5. V-Card Fields: V-Card is the standard for import or export contacts of an address book. The values are approximate because the number depends of the length of each field.
  6. NFC Forum specifications: compatibility with the technical specifications drawn up by the NFC Forum. For more information, please visit
  7. Encryption: a safety feature on the chip, which can help prevent the cloning is an advanced feature that requires technical skills, but not necessary for standard use.
  8. Serial Number: the Tag contains a unique ID.
  9. Universal Compatibility: nTag chips are the only compatible with every smartphone and tablet. To check other compatibility, see the list of NFC enabled smartphones and tablet
  10. Password Protection: nTag ICs can be protected with a password. A pw-protected NFC Tag cannot be overwritten, but can be read by everyone. You can use a 32-bit password. To use this feature, we recommend the NXP app, NFC TagWriter.