The **MH61TAG-R** is a specific electronic component primarily associated with **RFID (Radio Frequency Identification)** technology. Specifically, it refers to a glass transponder (tag) often used for animal identification or specialized industrial tracking. --- ## 1. Core Specifications The MH61TAG-R is typically manufactured by companies specializing in glass-encapsulated RFID tags (such as HID Global or specific industrial suppliers). | Feature | Description | | :--- | :--- | | **Technology** | Passive RFID (Low Frequency) | | **Frequency** | 125 kHz or 134.2 kHz (ISO 11784/11785 compliant) | | **Material** | Biocompatible Glass (Schott 8625 or equivalent) | | **Dimensions** | Typically 2.12mm x 12mm (Cylindrical) | | **Memory Type** | Read-Only (R) or OTP (One-Time Programmable) | --- ## 2. Internal Electronic Architecture Internally, the tag consists of three primary electronic sub-components: ### A. The IC (Integrated Circuit) The "brain" of the tag. It contains: * **Memory:** A unique 64-bit or 128-bit identification code. * **Rectifier:** Converts the electromagnetic field from the reader into DC power. * **Modulator:** Sends data back to the reader by varying the load on the antenna (Load Modulation). ### B. The Antenna Coil A micro-coil made of ultra-fine copper wire wound around a ferrite core. * **Function:** It acts as an inductor, picking up energy via magnetic induction from the RFID reader’s signal. ### C. The Capacitor * **Function:** Works in parallel with the antenna coil to create a **Resonant LC Circuit** tuned specifically to the target frequency (e.g., 134.2 kHz). --- ## 3. Key Electronic Characteristics ### Passive Operation The device has **no internal battery**. It remains dormant until it enters the electromagnetic field of a compatible reader. The magnetic field induces a small current in the coil, which powers the IC to broadcast its ID. ### Encapsulation (The Glass Shell) The "TAG-R" designation often implies a **Ruggedized** or **Glass** housing. * **Hermetic Seal:** Protects the electronics from moisture, body fluids, or chemical exposure. * **Biocompatibility:** If used for livestock or pets, the glass is coated to prevent migration (moving under the skin). --- ## 4. Common Applications 1. **Animal Identification:** Injected under the skin of pets, livestock, or fish for lifetime tracking. 2. **Asset Management:** Embedded into tools or high-value equipment for inventory. 3. **Industrial Automation:** Used in harsh environments where plastic tags would melt or corrode. ---