The **M2PHS2L-A4-R** is a specific part number typically associated with high-precision mechanical and electronic interface components, most commonly identified as a **high-current spring-loaded connector (Pogo Pin)** or a specialized probe pin used in testing and charging applications. Below is a breakdown of its electronic and physical specifications. --- ## 1. Component Overview This component is engineered for reliable electrical contact between two Printed Circuit Boards (PCBs) or between a device and a docking station. ### Key Specifications Table | Feature | Description | | :--- | :--- | | **Part Type** | Pogo Pin / Spring Loaded Connector | | **Current Rating** | Typically 2A to 5A (depending on manufacturer variant) | | **Voltage Rating** | 12V - 36V DC | | **Contact Resistance** | < 30 mΩ (milliohms) | | **Durability** | 10,000 to 50,000 cycles | | **Spring Force** | ~60g - 120g at working stroke | | **Plating** | Gold (Au) over Nickel (Ni) | --- ## 2. Part Number Breakdown (Typical Industry Nomenclature) While specific to the manufacturer (often associated with brands like *CFE* or *Top-Link*), the alphanumeric code usually signifies: * **M2**: Series designation (Miniature/Modular Series 2). * **PH**: Pogo Housing / Pin Header. * **S2**: Two-pin configuration (or spacing indicator). * **L-A4**: Length and stroke specifications (A4 refers to a specific height/plunger style). * **R**: Reel packaging (Tape & Reel) for automated SMT (Surface Mount Technology) assembly. --- ## 3. Materials and Construction The performance of the M2PHS2L-A4-R is determined by its three-piece construction: 1. **Plunger:** Usually made of brass or copper alloy, heavily gold-plated to ensure low resistance and prevent oxidation. 2. **Barrel:** The outer tube that holds the spring. It is designed for Surface Mount (SMT) soldering to the PCB. 3. **Spring:** Stainless steel or music wire, providing the "spring-back" force to maintain a constant electrical connection even under vibration. --- ## 4. Application Use Cases This part is commonly found in the following electronic sectors: * **Wearable Tech:** Charging cradles for smartwatches. * **Telecommunications:** Connection points in handheld radios or mobile devices. * **Medical Devices:** Removable sensor modules that require frequent docking. * **Industrial Testing:** Used on "Bed of Nails" testers to probe PCB test points. --- ## 5. Typical SMT Footprint Code If you are integrating this into a PCB design, the footprint usually follows this logic: ```c // Example Pad Layout Concept Pad_Size: 1.5mm x 1.5mm (Square or Round) Pitch: 2.54mm (Standard) or 2.0mm Solder_Paste: Lead-Free SAC305 Reflow_Temp: 260°C Peak ``` ---