NXP Semiconductors SL3S1203FUF,003

Overview

SL3S1203FUF,003 from NXP Semiconductors is a UHF RFID Gen2 transponder IC (EPCglobal v1.2.0) in bare die form, designed for passive and externally powered operation. It delivers -18 dBm chip sensitivity, 128-bit EPC memory, 64-bit TID with factory-locked 32-bit serial number, integrated Product Status Flag (PSF), and read protection - enabling item-level tagging, theft deterrence, and PCB tagging in retail and electronics applications.

For engineers reviewing the SL3S1203FUF,003 datasheet, SL3S1203FUF,003 pinout, SL3S1203FUF,003 application, or SL3S1203FUF,003 equivalent, this page provides verified technical context, exact pin functions for wafer-level integration, confirmed memory architecture, real-world use value of PSF and read protection, and validated alternative options for UHF RFID tag design.

Technical Context

The SL3S1203FUF,003 implements a fully compliant EPCglobal Class-1 Generation-2 UHF RFID air interface (840–960 MHz), with analog RF front-end including rectifier, voltage regulator, and backscatter modulation transistor. Its digital control block handles anti-collision, protocol state machines, EEPROM interface, and custom command execution (e.g., ChangeConfig).

It features a 4-pad bare die layout (RFP, RFN, VDD, OUT) with CMOS 0.14 μm process, 0.485 mm × 0.435 mm die size, and gold bumps (60 × 60 μm). Unlike G2iL+, SL3S1203FUF,003 supports only passive operation and excludes tag tamper alarm, RF field detection, digital switch, data transfer mode, and external supply mode - all reserved for G2iL+ variants (e.g., SL3S1213FUF).

Key Specifications

Pinout & Package

SL3S1203FUF,003 is supplied as a bumped bare die on 200 mm (8") wafer, thickness 75 μm ± 15 μm, with non-diagonal pad placement at chip corners. Die size is 0.485 mm × 0.435 mm; scribe line width is 15 μm in both X and Y dimensions.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar UHF RFID transponder applications.

Compared with SL3S1213FUF, SL3S1203FUF,003 offers lower unit cost and simpler integration for passive-only use cases, while SL3S1203FTB0 provides identical functionality in a standardized surface-mount package - eliminating wafer handling but adding 0.5 mm height and thermal mass.

Availability

SL3S1203FUF,003 is available at Aetrix Electronics and suitable for apparel tagging, PCB identification, and supply chain pallet tracking requiring stable component supply, wafer-level integration flexibility, and long-term EPC memory reliability.

Supply support for SL3S1203FUF,003 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, with core expertise in RFID, NFC, automotive MCUs, and secure authentication ICs.

The UCODE G2iL series, including SL3S1203FUF,003, was engineered specifically for high-reliability, cost-optimized UHF RFID item-level tagging in retail, logistics, and electronics manufacturing - prioritizing sensitivity, memory security, and Gen2 interoperability.

FAQ

What is the primary function of SL3S1203FUF,003 in an RFID system?

The SL3S1203FUF,003 serves as a passive UHF RFID transponder IC compliant with EPCglobal Gen2 v1.2.0. It stores and wirelessly exchanges EPC and TID data with readers via backscatter modulation, enabling item identification, inventory tracking, and electronic article surveillance. Its -18 dBm sensitivity and PSF feature make it ideal for high-read-rate retail and industrial tagging applications.

Does SL3S1203FUF,003 support external power supply?

Yes, SL3S1203FUF,003 includes a VDD terminal that accepts an external 1.85 V supply. When powered externally, its sensitivity improves to -27 dBm, boosting both read and write range. However, unlike the G2iL+ variant SL3S1213FUF, SL3S1203FUF,003 does not implement tag tamper alarm, digital switch, or data transfer modes - those require the G2iL+ silicon.

How is memory protected on SL3S1203FUF,003?

SL3S1203FUF,003 supports bank-wise read protection for both EPC and TID memory sections via dedicated flags in the Configuration Word (EPC address 20Dh and 20Eh). Once enabled, unauthorized readers receive all zeros when attempting to read protected banks. The kill and access passwords (32-bit each) further secure permanent disablement and transition to secured state.

What package form does SL3S1203FUF,003 ship in?

SL3S1203FUF,003 is delivered as a bumped bare die on a 200 mm (8") wafer, 75 μm thick, with four gold bumps (60 × 60 μm) at RFP, RFN, VDD, and OUT. It is not packaged in leaded or molded enclosures - intended for direct die attach onto flexible substrates or inlays using flip-chip or conductive adhesive processes.

Can SL3S1203FUF,003 be used for electronic article surveillance (EAS)?

Yes, SL3S1203FUF,003 includes an integrated Product Status Flag (PSF) at EPC address 20Fh. When set, it enables EAS functionality without backend database lookup: readers can issue EAS_Alarm command to trigger a 64-bit alarm code, or use SELECT2 to filter only PSF-enabled tags during inventory - making it suitable for retail theft deterrence systems.