NXP Semiconductors SL2S2602FUDZ

Overview

SL2S2602FUDZ from NXP Semiconductors is an ISO/IEC 15693-compliant contactless RFID IC in the ICODE SLIX2 family, designed for high-reliability item-level tagging and anti-counterfeiting applications. It delivers 2.5 kbit user EEPROM memory, 13.56 MHz RF interface with up to 1.5 m read range, 53 kbit/s data transfer, and hardware-enforced security including 32-byte ECC originality signature and four independent 32-bit password-protected functions (Read/Write, Privacy, Destroy, EAS/AFI).

For engineers reviewing the SL2S2602FUDZ datasheet, SL2S2602FUDZ pinout, SL2S2602FUDZ application, or SL2S2602FUDZ equivalent, this page provides verified technical context, exact pin definitions for XSON3 packaging, real-world application cards for pharmaceutical tracking and library systems, and two validated alternative parts with documented functional differences.

Technical Context

The SL2S2602FUDZ implements a fully integrated analog RF front-end with resonant demodulation and load modulation, supporting 100% ASK modulation per ISO/IEC 15693-2. Its digital controller executes true anti-collision per ISO/IEC 15693-3 and manages secure state transitions including Persistent Quiet mode and Privacy Mode activation via GET RANDOM NUMBER–derived challenge-response.

Memory architecture separates 2528-bit user-accessible blocks (79 × 4-byte) from a protected configuration area and a dedicated 16-bit counter block (Block 79). All password operations-including WRITE PASSWORD, LOCK PASSWORD, and 64-bit dual-password protection-require prior SET PASSWORD execution with XOR-encoded credentials derived from a fresh random number.

Key Specifications

Pinout & Package

SL2S2602FUDZ is packaged in XSON3 (SOT1122), a 3-terminal plastic extremely thin small outline package measuring 1.0 × 1.45 × 0.5 mm. The die uses LA/LB differential RF inputs with no internal ground connection; external antenna matching network design must account for 23.5 pF typical inter-pad capacitance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar contactless RFID IC applications.

Compared with SL2S2602FUDZ, SL2S2602FA8 trades package-level testability for SMT manufacturability, while SL2S2602FUD/BG provides full wafer-level access at the cost of assembly complexity-selection depends on whether production prioritizes placement speed (FA8), compact footprint (FUDZ), or integration flexibility (FUD/BG).

Availability

SL2S2602FUDZ is available at Aetrix Electronics and suitable for pharmaceutical supply chain serialization, library self-service systems, consumer anti-counterfeiting deployments, and industrial asset tagging requiring stable component supply across multi-year production cycles.

Supply support for SL2S2602FUDZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with core expertise in RFID, NFC, and trusted execution environments.

The ICODE SLIX2 product line-of which SL2S2602FUDZ is a member-is engineered for high-assurance item-level identification in regulated industries, emphasizing cryptographic authenticity, extended read range, and field-deployable security policy enforcement.

FAQ

What is the primary function of the SL2S2602FUDZ in an RFID system?

The SL2S2602FUDZ serves as a contactless, battery-free RFID tag IC operating at 13.56 MHz per ISO/IEC 15693. It stores and securely transmits data-including a unique 64-bit UID, 2.5 kbit user memory, and cryptographic originality signature-to compatible readers. Its role is to enable reliable identification, authentication, and data exchange in applications such as pharmaceutical tracking and library automation, without requiring onboard power.

Does the SL2S2602FUDZ support password-protected memory access, and how many distinct passwords does it implement?

Yes, the SL2S2602FUDZ implements five independent 32-bit password protections: Read, Write, Privacy, Destroy, and EAS/AFI. Each password controls access to specific functions-for example, the Privacy password activates Privacy Mode (where the tag responds only to GET RANDOM NUMBER), and the Destroy password permanently disables the tag via DESTROY SLIX2 command. Passwords are transmitted using XOR encoding with a reader-generated random number.

What is the physical package type and pin configuration of the SL2S2602FUDZ?

The SL2S2602FUDZ is housed in an XSON3 (SOT1122) package measuring 1.0 × 1.45 × 0.5 mm. It has three terminals: LA and LB (differential RF antenna inputs) and n.c. (no connect). Pin 1 is LB, Pin 2 is LA, and Pin 3 is unconnected. The LA–LB inter-terminal capacitance is 23.5 pF typical, a critical parameter for antenna matching network design.

How does the SL2S2602FUDZ ensure authenticity and prevent counterfeiting?

The SL2S2602FUDZ guarantees authenticity via a 32-byte ECDSA-based originality signature stored in hidden memory and generated using NXP's private key. This signature can be retrieved with the READ_SIGNATURE command and verified offline using NXP's published secp128r1 public key-enabling brand owners and end users to cryptographically confirm genuine NXP silicon without cloud services or reader-side processing overhead.

Can the SL2S2602FUDZ be used in high-volume automated assembly, and what packaging options support that?

Yes, the SL2S2602FUDZ itself is in XSON3 packaging suitable for standard SMT placement. For higher-volume automated conversion-especially in label manufacturing-the SL2S2602FA8 (MOA8 module on 35 mm tape) is optimized for pick-and-place machines and offers identical electrical functionality with LA/LB-only terminals. Both variants maintain the same 2.5 kbit memory, security features, and RF performance as the SL2S2602FUDZ.