ICODE SLIX vs Tag-it HF-I Plus

ICODE SLIX offers 112 bytes user memory with password protection and EAS. Tag-it HF-I Plus doubles capacity to 256 bytes with block locking. Both 13.56 MHz ISO 15693.

Side-by-side specs

Frequency
ICODE SLIX
13.56 MHz
Protocol
ICODE SLIX
ISO/IEC 15693-3, ISO/IEC 15693-2, ISO/IEC 18000-3
Tag-it HF-I Plus
ISO/IEC 15693, ISO/IEC 18000-3
Memory
ICODE SLIX
1024 bits organized in 32 blocks of 4 bytes each (896 bits user memory, 128 bits configuration area)
Tag-it HF-I Plus
2048 bits (256 bytes) user memory organized in 64 blocks of 32 bits each, EEPROM
Interface
ICODE SLIX
RF (contactless)
Tag-it HF-I Plus
RF (contactless)
Temp Range
ICODE SLIX
-40°C to +85°C (junction temperature)
Tag-it HF-I Plus
-40°C to +85°C
Form Factor
ICODE SLIX
Wafer (SL2S2002FUD, SL2S2102FUD: 120 μm, bumped), XSON3 SOT1122 (1 x 1.45 x 0.5 mm), MOA8 SOT500-4 (35 mm tape)
Tag-it HF-I Plus
Wafer (200mm / 8 inch), die size 1296 × 1116 μm (excluding scribe), available with grinding to 265 μm or 150 μm, NI/AU or AU bumps, sawn on foil frame
Security
ICODE SLIX
Unique 64-bit UID (non-alterable), 32-bit EAS/AFI password protection, lock mechanism for user memory blocks, DSFID, AFI, and EAS
Tag-it HF-I Plus
Individual block locking (user and factory lock bits), unique 64-bit UID factory-programmed and locked

Verdict

Choose ICODE SLIX if you need privacy-focused features with adequate storage for typical item-level tagging applications. This chip provides 896 bits (112 bytes) of user memory organized in 32 blocks of 4 bytes each, operating on 13.56 MHz with full ISO/IEC 15693 and ISO/IEC 18000-3 compliance. The ICODE SLIX distinguishes itself with 32-bit password protection for EAS (Electronic Article Surveillance) and AFI (Application Family Identifier) functions, making it suitable for retail anti-theft systems and library applications where privacy mode activation is required. The per-block lock mechanism allows selective write protection, and the dedicated 128-bit configuration area supports DSFID and AFI fields for application-specific filtering. The unique non-alterable 64-bit UID ensures each tag can be uniquely identified throughout its lifecycle. Choose Tag-it HF-I Plus if your application demands larger data storage capacity and you require granular memory protection without password-based security. This chip offers 2048 bits (256 bytes) of EEPROM user memory organized in 64 blocks of 32 bits (4 bytes) each, providing more than double the storage of ICODE SLIX while maintaining the same 13.56 MHz frequency and ISO/IEC 15693 and ISO/IEC 18000-3 protocol compatibility. The Tag-it HF-I Plus uses individual block locking with both user-programmable and factory lock bits, allowing permanent write protection at the block level but without password-based access control or EAS functionality. The factory-programmed and locked 64-bit UID ensures tag authenticity. This chip suits supply chain tracking, asset management, and industrial applications where extended data storage is critical for holding product information, maintenance records, or serialized manufacturing data across the item's journey.

FAQ

What is the memory difference between ICODE SLIX and Tag-it HF-I Plus?

ICODE SLIX provides 896 bits (112 bytes) of user memory in 32 blocks, while Tag-it HF-I Plus offers 2048 bits (256 bytes) in 64 blocks. Tag-it HF-I Plus has more than double the user memory capacity for applications requiring larger data storage.

Do both chips support the same RFID protocols?

Both chips support ISO/IEC 15693 and ISO/IEC 18000-3 protocols at 13.56 MHz. ICODE SLIX additionally specifies compliance with ISO/IEC 15693-2 and ISO/IEC 15693-3 specifically, ensuring full interoperability with standard ISO 15693 readers.

Which chip has better security features for anti-theft applications?

ICODE SLIX offers superior anti-theft security with 32-bit password protection for EAS and AFI functions, plus dedicated EAS mode for retail surveillance systems. Tag-it HF-I Plus provides only block-level locking without password protection or EAS capabilities.

Sourcing ICODE SLIX or Tag-it HF-I Plus in volume?

Roxtron builds custom RFID and NFC products around both ICODE SLIX and Tag-it HF-I Plus. Tell us your project — quantities, form factor, timeline — and we'll come back within 24 hours with pricing and lead times.