The **M2AS1-6333-R** is a specific surface-mount (SMT) component, primarily identified as a **Micro SD Memory Card Connector** manufactured by companies like **Amphenol** or **ATTEND** (part numbering conventions vary slightly by manufacturer, but the "M2AS" series typically refers to Micro SD sockets). Below is the technical breakdown of its electronic and mechanical parts. --- ## 1. Technical Specifications The following table summarizes the key electrical and physical characteristics: | Property | Description | | :--- | :--- | | **Component Type** | Micro SD (TF) Card Connector | | **Mounting Type** | Surface Mount (SMT / SMD) | | **Number of Pins** | 8 Signal Pins + 1 Detect Pin + 2 Shell Tabs | | **Current Rating** | 0.5A per pin | | **Voltage Rating** | 100V AC/DC | | **Insertion Style** | Push-Push (Ejector Mechanism) | | **Orientation** | Right Angle, Top Mount | --- ## 2. Key Electronic Parts and Materials The connector consists of several integrated sub-components that ensure electrical conductivity and signal integrity: ### A. Contact Pins (Terminals) * **Material:** Usually Phosphor Bronze. * **Plating:** Gold plating on the contact area (to prevent oxidation) and Tin plating on the solder tails. * **Function:** These make physical contact with the gold fingers of the Micro SD card to transmit data (DAT0-DAT3), Clock (CLK), and Power (VCC/GND). ### B. The Housing (Insulator) * **Material:** High-temperature thermoplastic (e.g., LCP - Liquid Crystal Polymer). * **Function:** It holds the pins in precise alignment and provides insulation between them to prevent short circuits during high-frequency data transmission. ### C. Metal Shield / Shell * **Material:** Stainless Steel. * **Function:** Provides Electromagnetic Interference (EMI) shielding and acts as the mechanical structural support. It is typically soldered to the PCB ground plane. ### D. Detection Switch * **Type:** Normally Open or Normally Closed. * **Function:** A mechanical lever that closes/opens a circuit when a card is fully inserted, signaling the CPU/Microcontroller that a card is present. --- ## 3. Pinout Configuration Standard Micro SD pin mapping for this connector type: | Pin # | Name | Description | | :--- | :--- | :--- | | 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 | | 6 | VSS | Supply Voltage Ground | | 7 | DAT0 | Data Line 0 | | 8 | DAT1 | Data Line 1 | | G | GND | Shield/Ground | --- ## 4. Footprint and Soldering When designing a PCB for the **M2AS1-6333-R**, engineers must account for: 1. **Solder Paste Stencil:** Precise apertures for the 0.5mm pitch pins. 2. **Card Path:** A "keep-out" area on the PCB where no other components can be placed to allow for the card's physical insertion and ejection travel.