The **RI-TRP-R9UR** is a specific type of Radio Frequency Identification (RFID) transponder manufactured by Texas Instruments. It belongs to the **TIRIS™** (Texas Instruments Registration and Identification System) product line. --- ### 1. Technical Specifications The RI-TRP-R9UR is a 23mm glass-encapsulated transponder designed for high durability and reliability. | Feature | Specification | | :--- | :--- | | **Technology** | Read-Only (RO) | | **Operating Frequency** | 134.2 kHz (LF - Low Frequency) | | **Integrated Circuit** | TIRIS™ architecture | | **Memory Size** | 64 bits (Read-only unique ID) | | **Modulation** | FSK (Frequency Shift Keying) | | **Material** | Hermetically sealed glass | | **Dimensions** | 23.1mm (Length) x 3.85mm (Diameter) | --- ### 2. Core Components and Working Principle The device is a **passive** component, meaning it does not have an internal battery. It consists of three primary internal parts: 1. **Antenna Coil:** A micro-coil made of fine copper wire wound around a ferrite core. It acts as an inductor to harvest energy from the reader's magnetic field via inductive coupling. 2. **Silicon Chip (IC):** Contains the unique 64-bit identification code programmed during manufacturing and the logic circuitry to modulate the signal. 3. **Capacitor:** Works in parallel with the antenna coil to form a resonant LC circuit tuned specifically to 134.2 kHz. --- ### 3. Key Electronic Characteristics * **Transmission Principle:** It uses **HDX (Half Duplex)** technology. The transponder charges its internal capacitor during the "on-pulse" of the reader and transmits its data during the "off-pulse" of the reader. * **Durability:** The glass encapsulation allows the part to withstand harsh chemicals, high pressure, and extreme temperatures, making it suitable for industrial or biological immersion. * **Data Integrity:** Because the ID is laser-programmed during production, it cannot be altered or cloned easily, providing high security for tracking. --- ### 4. Common Applications * **Animal Identification:** Used for subcutaneous tagging of livestock or pets. * **Asset Tracking:** Tracking high-value tools or gas cylinders in industrial environments. * **Waste Management:** Embedded in bins to automate collection billing. * **Access Control:** Used in specialized automotive or secure entry systems.