Description
Micro SD Card Slot Socket (Hinged / Push-Push Type PCB Mount)
Product Overview
The Micro SD Card Slot Socket is a high-precision, surface-mount (SMD/SMT) or through-hole memory card connector designed to integrate removable flash storage directly onto printed circuit boards (PCBs). Specifically engineered to accommodate standard Micro SD (TF) cards, this socket establishes a secure, low-resistance electrical interface with the card’s gold pads, ensuring high-speed data transfer rates over SPI or SDIO protocols.
Available in robust mechanical styles—such as the user-friendly Push-Push (Ejector) mechanism or the high-vibration Hinged (Flip-Lock) design—this connector prevents accidental card displacement during operation. It is an essential hardware component for embedded systems, data loggers, and internet-of-things (IoT) devices that require high-capacity external storage, firmware deployment, or localized data caching.
Key Features
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Precision Contact Mechanics: Equipped with high-elasticity, gold-plated beryllium copper alloy contacts that maintain consistent mating pressure, preventing data corruption from physical shock or vibration.
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Integrated Card Detection Switch: Features a built-in internal mechanical pin switch that signals the host microcontroller (MCU) instantly when a card is fully inserted or removed.
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Robust Shielding & Grounding: Enclosed in a stamped stainless-steel cover plate that provides structural rigidity, protects the internal frame during assembly heat, and acts as an excellent EMI/RFI ground shield.
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Low-Profile Footprint: Designed with an ultra-compact vertical and horizontal height clearance, maximizing available space inside tight handheld product enclosures.
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Positive Polarization Entry: Molded with an internal guide channel that matches the unique asymmetrical geometry of Micro SD cards, entirely preventing reverse insertion or pin damage.
Technical Specifications
| Parameter | Specification |
| Component Type | Micro SD / TransFlash (TF) Card Slot Holder |
| Mounting Configuration | SMT (Surface Mount Technology) / DIP (Through-Hole) Variant Specific |
| Ejection Mechanism | Push-Push (Push-to-insert / Push-to-eject) or Hinged Flip-Lock |
| Number of Contacts | 8 Pins + 2 Shield/Detection Pins |
| Pin Pitch | Standard High-Density Micro SD Grid Layout |
| Material (Housing) | High-Temperature LCP / Nylon Thermoplastic (UL 94V-0 Rated) |
| Material (Shield Shell) | Stainless Steel or Copper Alloy, Nickel-Plated |
| Material (Contacts) | Phosphor Bronze or Beryllium Copper, Gold-Plated over Nickel |
| Contact Resistance | $\le 0.1\,\Omega$ ($100\,\text{m}\Omega$) Max |
| Insulation Resistance | $\ge 1000\,\text{M}\Omega$ at 500V DC |
| Rated Voltage / Current | 100V AC/DC Max / 0.5A Max per pin |
| Mating Durability | $\ge 5000$ to $10000$ Insertion Cycles |
Applications
The universal standard interface for expandable flash storage, localized data preservation, and hardware updates:
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Industrial & Environmental Data Loggers: Serving as the central storage vault for logging extensive sensor metrics, temperature arrays, and GPS coordinates over long-term standalone deployments.
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Microcontroller Prototyping Shields: Ideal for adding massive external storage arrays to custom Arduino shields, ESP32 web servers, Raspberry Pi Pico nodes, and STM32 boards.
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Embedded Firmware & Boot OS Loaders: Providing a reliable hardware socket for hosting system boot images, operating systems, and field-upgradable firmware files.
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Audio & Multimedia Playback Modules: Perfect for feeding massive audio files, MP3 assets, graphic UI icons, and configuration scripts directly into localized multimedia processing hubs.
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