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ICODE SLIX2 vs. NTAG203

These two chips, the ICODE SLIX2 and the NTAG203 are from different NFC chip families. The ICODE SLIX2, manufactured by NXP belonging to the ICODE family, and the NTAG203, also manufactured by NXP.

The ICODE SLIX is part of NXP's ICODE family of chips. The ICODE series is older than NXP's NTAG series and has a number of significant differences - particularly a longer 8 byte UID and a longer memory retention specification of 50 years. However, this ICODE SLIX2 variant is newer and contains a large numebr of feature enhancements.

Generally, these chips are not commonly used in mobile phone NFC applications. While they are similar in cost to the NTAG series, Seritag generally recommend NTAG unless the additional specified memory retention lifespan is specifically required. The ICODE chips are not available in as many formats as the NTAG chips and are typically made to order.

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
320 Bytes
Max URL
250 Chars*
User Memory
144 Bytes
Max URL
136 Chars*
*Characters

Key Specifications

BrandNXP
Chip SeriesICODE
NFC ForumType 5
AvailabilityMedium
ScanStrengthHigh
BrandNXP
Chip SeriesNTAG
NFC ForumType 2
Availability
ScanStrengthHigh

Phone compatibility

Apple
Android
Apple
Android

Typical Use Cases

  • Libraries
  • Item tagging
  • Counterfeit protection
  • Asset marking
  • Marketing & Advertising
  • Vouchers
  • Bluetooth Pairing
  • GS1 EPC/RFID
  • Object Identification
  • Product Information
  • PLCR

User Features

 ICODE SLIX2NTAG203
Total memory (bytes)316168
User memory (bytes)320144
Max URL (chars)250136
UID (bytes)87
ECC signature -
32-bit password -
UID ASCII mirror--
Scan Counter -
Counter ASCII mirror--
Lockable

Technical Specifications

 ICODE SLIX2NTAG203
Chip thickness120 μm120 µm
NFC ForumType 5Type 2
Operating Freq.13.56Mhz13.56Mhz
Data Trans. Rate53 kbit/s106 kbit/s
Input Capacitance23.5 pf50pf
Fast read -
Data retention (years)505
Write endurance (cycles)100000 10000
Anticollision--
StandardISO/IEC 15693ISO/IEC 14443 A
Release date20162011

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