Micro SD Card Connector – Types, Pin Design & Applications

Introduction

A Micro SD Card Connector is a small electronic component used to connect a microSD memory card to a printed circuit board (PCB). It provides a stable electrical connection between the memory card and the host device for data storage and transfer.

Because of their compact size and durability, Micro SD Connectors are widely utilized in IoT devices, embedded systems, industrial controls, medical equipment, automotive electronics, and consumer electronics.

What is a MicroSD Card Connector?

A Micro SD connector is a surface-mount or through-hole PCB component that links a microSD memory card's pins to the host circuitry.

It provides:

• Secure card retention.

• Electrical connectivity.

• Optional card detection switch.

• Write-protect detection (based on design)

Types of MicroSD Card Connectors (Based on Pin Shape and Design)

Micro SD connectors differ primarily in their contact (pin) structure, mounting type, and card insertion process.

1. Flat Contact (SMT contact type)

• Surface mount technology (SMT)

• Flat spring contacts.

• Compact and low-profile

• Suitable for mobile and embedded devices.

2. Gull-Wing Pin Type

• Extended solder legs.

• Strong PCB solder joints.

• Improved mechanical stability

• Ideal for industrial applications.

3. Through-Hole Pin Type

• Pins pass through the PCB.

• Enhanced durability.

• Used in tough situations.

4. Push-Push Type Connector

• Press to insert; press to expel.

• user-friendly method.

• Common in consumer electronics.

5. Push-Pull type Connector

• Manual insertion and removal.

• Simpler mechanical structure.

• Cost-effective design.

6. Hinged or Flip-Type Connector

• Card secured by locking lid.

• Used in small integrated modules.

Key Features of MicroSD Card Connector :

• Compact and space-saving design.

• 8-pin standard interface.

• High insertion cycle durability.

• Secure card locking mechanism

• Gold-plated connections provide low resistance.

• Optional card detect switch.

• Low-profile height options

• High-speed data compatibility.

Technical Specifications :

Parameter	Specification
Number of Pins	8 Pins (Standard)
Mounting Type	SMT / Through-Hole
Contact Material	Phosphor Bronze (Gold Plated)
Rated Current	0.5A (Typical)
Operating Voltage	Up to 3.6V
Insertion Life	5,000 – 10,000 Cycles
Operating Temperature	-25°C to +85°C

Applications for Micro SD Card Connectors :

1. Embedded Systems

• Single-board computers

• Industrial controllers

• Data loggers

2. IoT Devices

• Smart sensors

• Monitoring Devices

• Gateway modules

3. Consumer Electronics

• Dashboard cameras

• Portable Audio Devices

• Action cameras

4. Medical Devices

• Diagnostic equipment

• Portable Monitoring Systems

5. Automotive Electronics.

• Telematics systems

• Information units

• Black box recording equipment.

Why Should You Choose the Right Micro SD Connector ?

Selecting the appropriate Micro SD connection ensures:

• Reliable electrical contacts

• Long service life.

• Secure card retention.

• Stable, high-speed data transfer

• Resistance to vibration and mechanical stress.

For tough or industrial situations, through-hole or reinforced SMT connectors are recommended. Low-profile SMT push-push kinds are ideal for tiny IoT or consumer gadgets.

Contact Us

Eteily Technologies India Pvt. Ltd.

📫 Address: B28 Vidhya Nagar, Near SBI Bank,
 📍  District: Bhopal, PIN: 462026, Madhya Pradesh
🌐 Website: https://eteily.com

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