The **W2PP-219R-R2** is a specific electronic hardware component, typically identified as a **Right-Angle Water-Resistant (IP67) Push-Push Micro SD Card Connector**. These components are critical in mobile electronics, outdoor IoT devices, and ruggedized industrial hardware where space is limited and environmental protection is required. --- ### 1. Technical Specifications The following table highlights the primary electrical and mechanical characteristics of the W2PP-219R-R2: | Feature | Specification | | :--- | :--- | | **Interface** | Micro SD (TransFlash) | | **Mounting Type** | Surface Mount (SMD / SMT) | | **Orientation** | Right-Angle (Side Entry) | | **Ejection Mechanism** | Push-Push (Push to insert, Push to eject) | | **IP Rating** | IP67 (Dust tight, Water immersion up to 1m) | | **Number of Contacts** | 8 Pins + Switch/Ground pins | | **Shell Material** | Stainless Steel (typically with Gold plating on contacts) | --- ### 2. Key Electronic Parts & Features #### A. Internal Contact Pins The connector utilizes high-conductivity copper alloy pins, usually plated with **Gold (Au)** over Nickel. Gold is used to prevent oxidation and ensure a stable low-resistance electrical connection even after thousands of insertion cycles. #### B. Push-Push Mechanism This is a mechanical-electronic hybrid system consisting of: * **Heart-shaped Cam:** Controls the locking and unlocking of the card. * **Coil Spring:** Provides the tension required to eject the card. * **Detection Switch:** An integrated circuit switch that signals the host controller (MCU/CPU) when a card is physically present. #### C. IP67 Waterproofing Components Unlike standard SD slots, the "W" in the prefix usually denotes **Waterproof**. * **Silicone Gasket/O-ring:** Usually integrated around the mouth of the connector or the shell to seal against the device enclosure. * **Sealed Housing:** The plastic body (LCP - Liquid Crystal Polymer) is molded to prevent water ingress through the solder leads. --- ### 3. Pinout Configuration While specific pin assignments follow the Micro SD standard, the physical footprint includes: 1. **DAT2:** Data Line 2 2. **CD/DAT3:** Card Detect / Data Line 3 3. **CMD:** Command/Response 4. **VDD:** Supply Voltage (2.7V - 3.6V) 5. **CLK:** Clock Signal 6. **VSS:** Ground 7. **DAT0:** Data Line 0 8. **DAT1:** Data Line 1 9. **CD Switch:** Mechanical Card Detection pins (connected to GPIO). --- ### 4. Application Areas * **Action Cameras:** High vibration and moisture exposure. * **GPS Trackers:** Outdoor environments requiring IP-rated enclosures. * **Industrial Handhelds:** Ruggedized tablets and scanners. * **IoT Gateways:** External data logging in exposed locations.