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NTAG424 vs. NTAG203

These two chips, the NTAG424 and the NTAG203 are from the same NTAG family of chips. They are both manufactured by NXP.

The authentication NTAG424 DNA chip was launched in 2019 as a replacement for the first authentication NTAG chip, the NTAG413. Hosting a wealth of security features this second generation frictionless authentication chip is now the standard for anti-counterfeit, phygital (physical to digital) and web3 based projects.

The NTAG203 was the first of the NTAG series of chips from NXP released in 2011. The previous generation to the current NTAG series of chips.

The NTAG203 is no longer in production and we very, very strongly recommend that you do not purchase any tags using this chip. They are either very old or non-genuine NXP chips.

Both these chips have a strong ScanStrength and will work very well with mobile phones.

Key Features

User Memory
256 Bytes
Max URL
249 Chars*
User Memory
144 Bytes
Max URL
136 Chars*
*Characters

Key Specifications

BrandNXP
Chip SeriesNTAG
NFC ForumType 4
AvailabilityLow
ScanStrengthHigh
BrandNXP
Chip SeriesNTAG
NFC ForumType 2
Availability
ScanStrengthHigh

Phone compatibility

Apple
Android
Apple
Android

Typical Use Cases

  • Anti-counterfeit
  • Authentication
  • Phygital
  • Marketing & Advertising
  • Vouchers
  • Bluetooth Pairing
  • GS1 EPC/RFID
  • Object Identification
  • Product Information
  • PLCR

User Features

 NTAG424NTAG203
Total memory (bytes)416168
User memory (bytes)256144
Max URL (chars)249136
UID (bytes)77
ECC signature -
32-bit password--
UID ASCII mirror -
Scan Counter -
Counter ASCII mirror -
Lockable

Technical Specifications

 NTAG424NTAG203
Chip thickness75 µm / 120 µm120 µm
NFC ForumType 4Type 2
Operating Freq.13.56Mhz13.56Mhz
Data Trans. RateUp to 848 kbit/s106 kbit/s
Input Capacitance50 pF50pf
Fast read--
Data retention (years)505
Write endurance (cycles)200000 10000
Anticollision -
StandardISO/IEC 14443 AISO/IEC 14443 A
Release date20192011

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