ICODE SLIX2 vs. NTAG424
These two chips, the ICODE SLIX2 and the NTAG424 are from different NFC chip families. The ICODE SLIX2, manufactured by NXP belonging to the ICODE family, and the NTAG424, 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 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.
Both these chips have a strong ScanStrength and will work very well with mobile phones.
Key Features
Key Specifications
| Brand | NXP |
| Chip Series | ICODE |
| NFC Forum | Type 5 |
| Availability | Medium |
| ScanStrength | High |
| Brand | NXP |
| Chip Series | NTAG |
| NFC Forum | Type 4 |
| Availability | Low |
| ScanStrength | High |
Phone compatibility
Typical Use Cases
- Libraries
- Item tagging
- Counterfeit protection
- Asset marking
- Anti-counterfeit
- Authentication
- Phygital
User Features
| ICODE SLIX2 | NTAG424 | |
|---|---|---|
| Total memory (bytes) | 316 | 416 |
| User memory (bytes) | 320 | 256 |
| Max URL (chars) | 250 | 249 |
| UID (bytes) | 8 | 7 |
| ECC signature | ||
| 32-bit password | - | |
| UID ASCII mirror | - | |
| Scan Counter | ||
| Counter ASCII mirror | - | |
| Lockable |
Technical Specifications
| ICODE SLIX2 | NTAG424 | |
|---|---|---|
| Chip thickness | 120 μm | 75 µm / 120 µm |
| NFC Forum | Type 5 | Type 4 |
| Operating Freq. | 13.56Mhz | 13.56Mhz |
| Data Trans. Rate | 53 kbit/s | Up to 848 kbit/s |
| Input Capacitance | 23.5 pf | 50 pF |
| Fast read | - | |
| Data retention (years) | 50 | 50 |
| Write endurance (cycles) | 100000 | 200000 |
| Anticollision | - | |
| Standard | ISO/IEC 15693 | ISO/IEC 14443 A |
| Release date | 2016 | 2019 |
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