Texas Instruments RI-TRP-W9WK-03

Overview

RI-TRP-W9WK-03 from Texas Instruments is a batteryless, read/write LF RFID transponder operating at 134.2 kHz with HDX (Half Duplex) transmission, 80-bit memory (64 user + 16-bit CRC), IP68 rating, and 12 mm × 6 mm × 3 mm plastic wedge package. It is used in industrial asset tagging and animal identification where robust environmental sealing and metal-adjacent mounting are required.

For engineers reviewing the RI-TRP-W9WK-03 datasheet, RI-TRP-W9WK-03 pinout, RI-TRP-W9WK-03 application, or RI-TRP-W9WK-03 equivalent, key selection factors include its HDX modulation scheme, 100,000-programming-cycle endurance, -40°C to +70°C programming temperature limit, 309 ms typical programming time, and compatibility with TI-RFID LF readers using CCITT CRC validation.

Technical Context

This transponder implements Half-Duplex (HDX) communication: the reader powers the device via magnetic coupling at 134.2 kHz, then pauses excitation to allow the transponder to backscatter its response using FSK between 134.2 kHz and 123.2 kHz. Memory is organized as one 80-bit page with mandatory 16-bit CCITT CRC for integrity verification during read/write operations.

It draws no internal power source-energy is harvested solely from the reader's RF field-and supports programming only within -40°C to +70°C, while read operation remains functional up to +85°C. Mechanical robustness is validated per IEC 68-2-27 (200 g shock) and IEC 68-2-6 (20 g vibration).

Key Specifications

Pinout & Package

RI-TRP-W9WK-03 is a passive, two-terminal RF transponder with no electrical pins or solderable terminals. It consists of a monolithic coil-antenna embedded in black plastic compound, forming a sealed 12 mm × 6 mm × 3 mm wedge-shaped package. No external connections are required-operation relies entirely on inductive coupling with an external reader antenna.

Key Features

Applications

Equivalent & Alternatives

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

Compared with RI-TRP-W9WK-02 and RI-TRP-R9WK-03, the RI-TRP-W9WK-03 uniquely combines full read/write capability, IP68 sealing, and 200 g shock rating-making it the only option among the three qualified for submerged, high-vibration, and field-reprogrammable deployments.

Availability

RI-TRP-W9WK-03 is available at Aetrix Electronics and suitable for industrial asset tracking, animal identification, reusable container management, and tool crib control requiring stable component supply across multi-year production programs.

Supply support for RI-TRP-W9WK-03 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

Texas Instruments is a global semiconductor company focused on analog, embedded processing, and wireless technologies, serving industrial, automotive, and communications markets.

The RI-TRP-W9WK-03 belongs to TI's RFID transponder product line, engineered specifically for rugged, batteryless identification in demanding physical environments where reliability, sealing, and reprogrammability are critical.

FAQ

What is the maximum programming temperature for RI-TRP-W9WK-03?

The RI-TRP-W9WK-03 supports programming only within -40°C to +70°C. This limit is strictly enforced by internal memory controller logic to prevent oxide degradation during write cycles. Outside this range, the RI-TRP-W9WK-03 remains readable up to +85°C but will reject programming commands. Always verify ambient temperature at point of programming in industrial settings.

Does RI-TRP-W9WK-03 require an external power source or battery?

No, the RI-TRP-W9WK-03 is fully batteryless and derives all operating energy from the magnetic field generated by a compatible TI-RFID LF reader. Its internal coil and capacitor form a resonant tank circuit tuned to 134.2 kHz, enabling power harvesting and HDX backscatter communication without any onboard power storage or regulation circuitry.

How is data integrity ensured during programming of RI-TRP-W9WK-03?

Data integrity for RI-TRP-W9WK-03 is enforced via a mandatory 16-bit CCITT CRC applied across the 64-bit user memory portion. The RI-TRP-W9WK-03 hardware validates this CRC upon every write attempt; if mismatched, the programming operation fails and no memory update occurs. Readers must compute and append the correct CRC before issuing the write command.

Can RI-TRP-W9WK-03 be read through metal surfaces?

No, the RI-TRP-W9WK-03 cannot be read through metal surfaces-its 134.2 kHz magnetic coupling is blocked by conductive materials. However, it can be mounted *adjacent* to metal using spacers or ferrite backing, and it reliably reads through all non-metallic materials including water, plastic, wood, concrete, and biological tissue-as confirmed by TI's signal penetration testing.

What mechanical standards does RI-TRP-W9WK-03 meet for shock and vibration?

The RI-TRP-W9WK-03 complies with IEC 68-2-27 (Test Ea) for shock: 200 g, half-sine pulse, 3 ms duration, applied to all three axes (6 shocks per axis). For vibration, it meets IEC 68-2-6 (Test Fc): 20 g acceleration across 1–500 Hz, tested 24 hours per axis. These certifications validate its suitability for mobile equipment and transport-intensive applications.