The **RI-TRP-R9BK** is a specific type of Radio Frequency Identification (RFID) transponder manufactured by **Texas Instruments (TI)**. It belongs to the TIRIS™ (Texas Instruments Registration and Identification System) family, specifically the **12 kHz LF (Low Frequency)** series. --- ## 1. Technical Specifications This part is a **12mm Glass Transponder** designed for durability and long-term reliability in harsh environments. | Feature | Specification | | :--- | :--- | | **Part Number** | RI-TRP-R9BK | | **Technology** | RFID (Radio Frequency Identification) | | **Frequency** | 134.2 kHz (Low Frequency) | | **Type** | Read Only (RO) | | **Memory Capacity** | 64 Bits (Fixed ID) | | **Housing Material** | Hermetically sealed Glass | | **Operating Temp** | -40°C to +85°C | | **Dimensions** | 12mm x 2.12mm (Cylindrical) | --- ## 2. Core Electronic Components Inside the glass capsule, the device consists of three primary electronic elements: ### A. The Induction Coil (Antenna) The coil consists of very fine copper wire wound around a ferrite core. This acts as both the power source (via induction) and the communication interface. Since this is a **passive** tag, there is no battery; the coil picks up energy from the reader's magnetic field. ### B. The Integrated Circuit (IC) The silicon chip contains: * **RF Interface:** Rectifies the induced AC voltage from the coil into DC power. * **Logic Control:** Manages the timing and data transmission. * **Memory (EEPROM):** Stores a unique 64-bit identification code programmed at the factory. ### C. The Capacitor A small resonant capacitor is integrated to tune the antenna circuit to the specific frequency of **134.2 kHz**. This ensures maximum energy transfer efficiency between the reader and the transponder. --- ## 3. Communication Principle: FM (FSK) Unlike many LF tags that use simple Amplitude Shift Keying (ASK), the RI-TRP-R9BK uses **Frequency Shift Keying (FSK)**. * **Binary 0:** 134.2 kHz * **Binary 1:** 124.2 kHz This provides better resistance to electrical noise and interference, which is common in industrial or automotive environments. --- ## 4. Key Applications Because of its small size and rugged glass encapsulation, the RI-TRP-R9BK is commonly used in: 1. **Animal Tracking:** Often injected under the skin (Bio-glass). 2. **Asset Tracking:** Marking tools or equipment in high-moisture environments. 3. **Automotive Immobilizers:** Used in car keys for anti-theft identification. 4. **Waste Management:** Tracking bins and disposal cycles.