## Overview of the W5PA-A17BA2-R2 The **W5PA-A17BA2-R2** is a specialized high-density, board-to-board (BtB) connector commonly used in compact electronic devices such as smartphones, tablets, and wearables. These connectors are engineered to handle high-speed data transmission while occupying minimal space on a Printed Circuit Board (PCB). --- ### Technical Specifications The following table outlines the primary electronic and mechanical characteristics of this component: | Feature | Specification | | :--- | :--- | | **Connector Type** | Board-to-Board (Receptacle) | | **Pitch** | 0.35 mm | | **Number of Positions** | 17 Pins | | **Stacking Height** | 0.6 mm to 1.0 mm (varies by mating plug) | | **Current Rating** | ~0.3A to 5.0A (Power pins often rated higher) | | **Voltage Rating** | 50V AC/DC | | **Contact Resistance** | Max 30mΩ | | **Durability** | 10 to 30 Mating Cycles | --- ### Key Electronic Features #### 1. High-Density Pitch With a **0.35 mm pitch**, the connector allows for a high pin count in a very small footprint. This is critical for modern mobile electronics where PCB real estate is at a premium. #### 2. Hybrid Power/Signal Support Many connectors in this series are "hybrid," meaning they have specific pins designated for high-current power delivery (often at the ends of the connector) and other pins for low-power high-speed data signals. #### 3. EMI/ESD Shielding The "R2" suffix often denotes a specific revision or packaging style that includes enhanced metal shielding. This protects sensitive high-speed signals from Electromagnetic Interference (EMI) and provides a path for Electrostatic Discharge (ESD) to ground. #### 4. Fine Pitch Reliability The contact geometry is designed to provide a "click" feel (tactile feedback) to ensure the connection is secure, which is vital during automated or manual assembly processes. --- ### Common Applications * **Mobile Devices:** Connecting OLED/LCD screens to the main logic board. * **Camera Modules:** Interfacing high-resolution image sensors. * **Battery Connections:** Used when the battery requires a pluggable interface rather than a soldered lead. * **Wearables:** Smartwatches and fitness trackers where space is extremely limited. --- ### Structural Breakdown * **Housing:** High-temperature thermoplastic (LCP) capable of withstanding reflow soldering. * **Contacts:** Copper alloy with gold plating to prevent oxidation and maintain low contact resistance. * **Solder Tabs:** Large metal tabs on the sides for mechanical anchoring to the PCB, preventing the connector from being torn off during mating/unmating.