The **KCEZ-A1-R** is a specific electronic connector component, primarily identified as a **Smart Card Connector** (often used for SD cards or SIM cards depending on the specific series iteration) manufactured by companies like **Yamaichi Electronics**. Below is a breakdown of its technical specifications, physical characteristics, and typical applications. --- ### 1. Technical Specifications The "KCEZ" series is known for its robust mechanical design and high reliability in data transmission. | Feature | Specification | | :--- | :--- | | **Component Type** | Smart Card / Memory Card Connector | | **Mounting Type** | Surface Mount (SMT) | | **Ejection Mechanism** | Push-Push (Manual Insert/Manual Eject) | | **Number of Positions** | Usually 8 to 10 pins (Standard for SD/Smart cards) | | **Contact Plating** | Gold over Nickel | | **Orientation** | Right Angle / Horizontal | | **Shielding** | Metal Shell for EMI protection | --- ### 2. Key Electronic Features * **Switch Detection:** Most KCEZ models include a "Card Detection Switch." This is a normally open or normally closed mechanical switch that tells the microprocessor when a card has been fully inserted. * **Write Protection:** Depending on the specific sub-variant, it may include a mechanical sensor to detect the "Lock" slider on SD cards. * **EMI/RFI Grounding:** The outer metal casing is designed with multiple solder tabs to ensure a strong ground connection, reducing electronic noise in high-speed data transfers. * **Durability:** Rated for high insertion cycles (typically 5,000 to 10,000 cycles), making it suitable for consumer electronics. --- ### 3. Pinout Structure (General Example) While the exact pinout follows the SD or Smart Card standard, the physical footprint usually follows this logic: ```text [ Card Entry Slot ] ------------------- | 1 2 3 4 5 6 7 8 | <-- Signal Pins (Data, Clock, VCC, GND) | [GND] [SW] | <-- Shield Ground & Detection Switch ------------------- ``` --- ### 4. Common Applications The KCEZ-A1-R is typically found in hardware where removable storage or identification is required: 1. **Industrial PCs:** For OS booting or data logging. 2. **Point of Sale (POS) Terminals:** For reading chip-based credit cards or merchant IDs. 3. **Consumer Electronics:** Digital cameras, GPS units, and media players. 4. **Automotive Systems:** Dashcams or infotainment systems. ---