The **MAH71TAG-R** is an advanced radio frequency (RF) identification component, specifically an **RFID Tag** designed for industrial applications. It is part of the Pepperl+Fuchs identification system, often used in automation and logistics to track assets in harsh environments. --- ### 1. Technical Specifications The MAH71TAG-R is an **LF (Low Frequency)** inductive tag. Below are the primary electronic and mechanical specifications: | Feature | Specification | | :--- | :--- | | **Operating Frequency** | 125 kHz | | **Memory Type** | ROM (Read-Only) | | **Memory Size** | 64 bits (40-bit unique ID) | | **Read Distance** | 0 mm to 50 mm (depending on reader) | | **Operating Temp** | -25 °C to +70 °C (-13 °F to 158 °F) | | **Enclosure Rating** | IP67 (Water and dust resistant) | | **Housing Material** | Polyamide (PA) | --- ### 2. Key Electronic Components & Working Principle The tag operates as a **passive device**, meaning it does not contain a battery. It functions through the following electronic stages: 1. **Antenna Coil:** An internal copper coil acts as an inductor. When placed in the magnetic field of an RFID reader (125 kHz), it captures energy via electromagnetic induction. 2. **IC (Integrated Circuit):** A microchip that harvests the induced current to power itself. Once powered, it modulates the magnetic field to transmit its pre-programmed unique identification number back to the reader. 3. **Encapsulation:** The electronic internals are potted in a rugged plastic housing to protect against vibration, moisture, and chemical exposure. --- ### 3. Usage and Mounting Because this tag is a "High-Temperature/Rugged" variant (often indicated by the "R" suffix in industrial series), it is designed for specific mounting conditions: * **Non-Flush Mounting:** For best performance, it should be mounted away from large metal surfaces which can interfere with the 125 kHz magnetic field. * **Unique ID:** Since it is "Read-Only," it is used primarily for **ID tracking** rather than storing dynamic data (like batch numbers or timestamps). --- ### 4. Typical Applications * **Tool Identification:** Tracking CNC bits or industrial tools. * **Conveyor Systems:** Identifying pallets or carriers on an automated line. * **Access Control:** High-durability proximity identification in outdoor environments.