The **M2PHSH-B4-R/N** is a specific part number typically associated with **M.2 (NGFF) high-speed connectors**, often used in industrial and consumer electronics for interfacing SSDs or wireless modules. Based on the nomenclature, here is a detailed breakdown of its electronic parts and characteristics. --- ### 1. General Specifications This component is a surface-mount (SMT) connector designed to provide a bridge between the motherboard and an M.2 expansion card. | Feature | Specification | | :--- | :--- | | **Connector Type** | M.2 (NGFF - Next Generation Form Factor) | | **Mounting Type** | Surface Mount (SMT) / Right Angle | | **Pin Count** | 67-75 Pins (Typical for B-Key or M-Key) | | **Pitch** | 0.50 mm | | **Orientation** | Horizontal (Right Angle) | --- ### 2. Breakdown of Parts and Construction The electronic assembly of this connector consists of four primary elements: #### A. The Housing (Insulator) * **Material:** Usually High-Temperature Thermoplastic (LCP - Liquid Crystal Polymer). * **Function:** Provides the structural frame for the pins. It is designed to withstand "Reflow Soldering" temperatures (up to 260°C). * **Safety:** Rated UL 94V-0 for flame retardancy. #### B. The Contacts (Terminals) * **Material:** Copper Alloy (Phosphor Bronze or Beryllium Copper). * **Plating:** Gold plating on the contact area (to prevent oxidation and ensure high-speed signal integrity) and Tin/Lead-free plating on the solder tails. * **Design:** These are cantilever-style springs that apply pressure to the pads of the M.2 card. #### C. Solder Tabs (Anchors) * **Material:** Stainless Steel or Copper Alloy with Tin plating. * **Function:** These are larger metal tabs on the sides of the connector. They do not carry signals but are soldered to the PCB to provide mechanical strength so the connector doesn't rip off during card insertion/removal. #### D. Keying (The "B" in the Part Number) * The "B-Key" designation refers to the physical notch in the connector. * **Electronic Logic:** A B-Key connector usually supports **SATA** or **PCIe x2** interfaces. This physical notch prevents the user from inserting an incompatible card (like an M-Key only NVMe drive) into the slot. --- ### 3. Electrical Performance Characteristics | Parameter | Value | | :--- | :--- | | **Current Rating** | 0.5A per pin | | **Voltage Rating** | 50V AC/DC | | **Contact Resistance** | 55 mΩ Max | | **Insulation Resistance** | 500 MΩ Min | | **Dielectric Strength** | 300V AC for 1 minute | --- ### 4. Application Context * **M2:** Refers to the Form Factor. * **PH:** Often denotes "Plug" or "Pitch/Height" specifications in manufacturer catalogs. * **R/N:** Typically stands for "Right Angle" orientation and "Natural" or "No-peg" configuration depending on the specific vendor's suffix system.