ICODE SLIX-S vs Tag-it HF-I Standard

Comparing 128-byte ICODE SLIX-S with EAS and 32-bit password vs 256-byte Tag-it HF-I with dual lock. Both ISO 15693, 13.56 MHz chips for asset tracking.

Side-by-side specs

Frequency

ICODE SLIX-S: 13.56 MHz
Tag-it HF-I Standard: 13.56 MHz

Protocol

ICODE SLIX-S: ISO/IEC 15693-3, ISO/IEC 15693-2, ISO/IEC 18000-3
Tag-it HF-I Standard: ISO/IEC 15693, ISO/IEC 18000-3

Memory

ICODE SLIX-S: 1024 bits (128 bytes), organized in 32 blocks of 4 bytes each; 896 bits (112 bytes) user memory
Tag-it HF-I Standard: 2048 bits (256 bytes) user memory organized in 64 blocks of 32 bits (4 bytes) each, plus 64-bit UID, DSFID, AFI

Interface

ICODE SLIX-S: RF contactless (no battery required), data rate up to 53 kbit/s
Tag-it HF-I Standard: RF (contactless)

Temp Range

ICODE SLIX-S: -40°C to +85°C (junction)
Tag-it HF-I Standard: -40°C to +85°C operating, -40°C to +125°C storage

Form Factor

ICODE SLIX-S: Wafer (SL2S2002FUD, SL2S2102FUD, 120 μm, 200 mm diameter), XSON3 (SOT1122, 1 x 1.45 x 0.5 mm), MOA8 (SOT500-4, 35 mm wide tape)
Tag-it HF-I Standard: Wafer (200 mm / 8 inch diameter, 265 µm thick after grinding), die size 1296 µm × 1116 µm, bumped (Ni/Au chemical bumps, 25 µm height)

Security

ICODE SLIX-S: Unique 64-bit UID (read-only), 32-bit EAS/AFI password protection, block-level write protection, lock mechanism for DSFID/AFI/EAS
Tag-it HF-I Standard: Individual block locking (user lock and factory lock per block), irreversible write protection

Spec	ICODE SLIX-S	Tag-it HF-I Standard
Frequency	13.56 MHz	13.56 MHz
Protocol	ISO/IEC 15693-3, ISO/IEC 15693-2, ISO/IEC 18000-3	ISO/IEC 15693, ISO/IEC 18000-3
Memory	1024 bits (128 bytes), organized in 32 blocks of 4 bytes each; 896 bits (112 bytes) user memory	2048 bits (256 bytes) user memory organized in 64 blocks of 32 bits (4 bytes) each, plus 64-bit UID, DSFID, AFI
Interface	RF contactless (no battery required), data rate up to 53 kbit/s	RF (contactless)
Temp Range	-40°C to +85°C (junction)	-40°C to +85°C operating, -40°C to +125°C storage
Form Factor	Wafer (SL2S2002FUD, SL2S2102FUD, 120 μm, 200 mm diameter), XSON3 (SOT1122, 1 x 1.45 x 0.5 mm), MOA8 (SOT500-4, 35 mm wide tape)	Wafer (200 mm / 8 inch diameter, 265 µm thick after grinding), die size 1296 µm × 1116 µm, bumped (Ni/Au chemical bumps, 25 µm height)
Security	Unique 64-bit UID (read-only), 32-bit EAS/AFI password protection, block-level write protection, lock mechanism for DSFID/AFI/EAS	Individual block locking (user lock and factory lock per block), irreversible write protection

Verdict

Choose ICODE SLIX-S if you need Electronic Article Surveillance (EAS) functionality, password-protected memory access, or privacy mode for retail and library applications. This chip offers 896 bits (112 bytes) of user memory across 32 blocks and includes a 32-bit password for EAS/AFI functions, block-level write protection, and a 64-bit privacy mode that prevents unauthorized UID reading. The SLIX-S operates at data rates up to 53 kbit/s and supports ISO/IEC 15693-2, 15693-3, and ISO/IEC 18000-3 protocols. Its combination of password protection and EAS makes it particularly suitable for retail loss prevention systems where you need both inventory tracking and anti-theft capabilities, or library systems requiring patron privacy protection. Choose Tag-it HF-I Standard if you require larger memory capacity and need granular per-block locking without password authentication. This chip provides 2048 bits (256 bytes) of user memory organized in 64 blocks of 4 bytes each—exactly double the SLIX-S capacity. Each block features dual locking mechanisms: user lock (reversible during manufacturing) and factory lock (irreversible write protection). The Tag-it HF-I complies with ISO/IEC 15693 and ISO/IEC 18000-3 standards and includes a 64-bit UID, DSFID, and AFI fields. This chip suits applications requiring more data storage per tag, such as detailed asset records, supply chain tracking with extensive metadata, or document management systems where individual data blocks need permanent write protection but password-based security is not required.

FAQ

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

ICODE SLIX-S provides 896 bits (112 bytes) of user memory in 32 blocks, while Tag-it HF-I Standard offers 2048 bits (256 bytes) of user memory in 64 blocks. The Tag-it HF-I has more than double the user memory capacity.

Does Tag-it HF-I Standard support password protection like ICODE SLIX-S?

No, Tag-it HF-I Standard uses individual block locking (user lock and factory lock) but does not feature password protection. ICODE SLIX-S provides 32-bit password protection for EAS/AFI functions and 64-bit privacy mode, making it more suitable for applications requiring access control.

Are ICODE SLIX-S and Tag-it HF-I compatible with the same readers?

Yes, both chips operate at 13.56 MHz and support ISO/IEC 15693 and ISO/IEC 18000-3 protocols, making them compatible with standard ISO 15693 RFID readers. Both use contactless RF interfaces without requiring batteries.

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

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