The **47DM-1128-R** is a specific electronic component, primarily identified as a **Micro SD Memory Card Connector**. These parts are essential for mobile devices, embedded systems, and consumer electronics that require expandable storage. --- ## 1. Component Overview This part is a **Push-Push type** connector, meaning it features a spring-loaded mechanism where you push the card to insert it and push it again to eject it. It is designed for Surface Mount Technology (SMT). ### Technical Specifications | Feature | Specification | | :--- | :--- | | **Component Type** | Micro SD Card Slot / Connector | | **Mounting Type** | SMT (Surface Mount Technology) | | **Mechanism** | Push-Push (Spring Loaded) | | **Number of Pins** | 8 Contacts + 1 Switch (Card Detection) | | **Orientation** | Right Angle / Top Mount | | **Lead-Free Status** | RoHS Compliant (indicated by the "-R" suffix) | --- ## 2. Key Features and Design The "47DM" series generally follows industry standards for high-reliability connectors. * **Card Detection Switch:** It includes a small internal switch that closes when a card is fully inserted. This allows the system's CPU to know a card is present. * **Low Profile:** Designed to be extremely thin, making it suitable for modern smartphones, tablets, and thin IoT devices. * **Shielding:** The metal shell acts as an EMI (Electromagnetic Interference) shield and provides structural grounding to the PCB. * **Stainless Steel Shell:** Typically uses a stainless steel cover to ensure durability over thousands of insertion/extraction cycles. --- ## 3. Pin Configuration The Micro SD standard utilizes 8 main pins for data transfer and power: 1. **DAT2**: Data Line 2 2. **CD/DAT3**: Card Detect / Data Line 3 3. **CMD**: Command/Response 4. **VDD**: Supply Voltage (typically 2.7V to 3.6V) 5. **CLK**: Clock Signal 6. **VSS**: Supply Voltage Ground 7. **DAT0**: Data Line 0 8. **DAT1**: Data Line 1 --- ## 4. Common Applications * **Handheld Devices:** Mobile phones, GPS units, and digital cameras. * **Industrial Computing:** Single-board computers (like Raspberry Pi clones) and data loggers. * **Smart Home:** Security cameras and smart doorbells that store footage locally.