USB Flash Drives

Image	Part Number	Description / PDF	Quantity	Rfq
	SFU3032GE1AE1TO-C-NC-1A1-STD Swissbit	IND USB FLASH DRIVE U-500K 32 GB	0
	AF8GUFEDBK-OEM ATP Electronics, Inc.	USB FLASH DRIVE 8GB MLC USB 2.0	0
	SFU34096E1AE1TO-C-MS-1A1-STD Swissbit	IND USB FLASH DRIVE U-500K 4 GB	0
	AP16GAH355B Apacer	USB FLASH DRIVE 16GB USB 2.0/3.0	0
	APHA008GT23EG-CM Apacer	USB FLASH DRIVE 4GB MLC USB 2.0	0
	CY7C65640A-LXCKA	USB	0
	CS7223AA	USB	0
	APHA008GT23EG-6T Apacer	USB FLASH DRIVE 8GB SLC USB 2.0	0
	CS7224KA	USB	0
	CS3199BT	USB	0
	CS2921AM	USB	0
	CS6656DA	USB	0
	CS6803AA	USB	0
	CS7397AM	USB	0
	CS7226AAT	USB	0
	AP32GAH353C Apacer	USB FLASH DRIVE 32GB USB 2.0	0
	CS3920AF	USB	0
	AP64GAH352B Apacer	USB FLASH DRIVE 64GB USB 2.0/3.0	0
	AP16GAH326B Apacer	USB FLASH DRIVE 16GB USB 2.0	0
	CS4292BFT	USB	0

USB Flash Drives

1. Overview

Memory cards and USB flash drives are portable semiconductor storage devices utilizing NAND flash memory technology. Memory cards (SD, microSD, CF, etc.) serve as removable storage for compact electronics, while USB flash drives combine flash memory with USB interfaces for plug-and-play data transfer. These devices have become critical components in digital data management, enabling rapid information exchange across consumer electronics, industrial equipment, and enterprise systems.

2. Main Types and Functional Classification

Type	Functional Features	Application Examples
SD Card (Secure Digital)	Standard size, 4-bit parallel interface, SDXC support up to 2TB	Digital cameras, laptops, game consoles
microSD Card	Smallest form factor, supports UHS-II with 312MB/s speeds	Smartphones, drones, action cameras
CF Card (CompactFlash)	IDE/CFast 2.0 interface, durable mechanical design	Professional DSLR cameras, industrial PCs
USB 3.2 Flash Drive	Backward compatible, theoretical speeds up to 20Gbps	Computer data transfer, OS boot drives
USB-C Flash Drive	Reversible connector, supports USB Power Delivery	Modern smartphones, tablets, MacBooks

3. Structure and Components

Typical components include:

Controller Chip: Manages data storage/retrieval, wear leveling, and error correction
NAND Flash Memory: Storage medium with MLC/TLC/3D NAND architectures
Interface Contacts: Gold-plated USB Type-A/Type-C or SD card connectors
Protective Housing: Plastic/metal casing with ESD protection
Write Protection Switch: Mechanical lock on SD cards to prevent data modification

4. Key Technical Specifications

Parameter	Description	Importance
Storage Capacity	128MB - 1TB (varies by type)	Determines data volume handling capability
Read/Write Speeds	10MB/s - 1000MB/s (varies by interface)	Affects file transfer efficiency
Interface Standard	USB 3.2 Gen 2x2, UHS-II SD, PCIe NVMe	Defines compatibility and bandwidth limits
Durability	10,000+ insertion cycles, 10-year data retention	Impacts long-term reliability
Operating Temperature	-25 C to +85 C (industrial grade)	Critical for harsh environment applications

5. Application Fields

Consumer Electronics: Smartphones (microSD), digital cameras (SD), gaming devices
Industrial Equipment: CNC machines (CFast), embedded systems (industrial USB drives)
Medical Devices: Diagnostic equipment data logging (ruggedized SD cards)
Automotive: Dashcams (A1-rated microSD), infotainment systems
Enterprise IT: Encrypted USB drives for secure data transport

6. Leading Manufacturers and Products

Manufacturer	Representative Product	Key Features
SanDisk	Extreme Pro microSDXC	170MB/s write speed, 4K video recording
Kingston	Canvas React Plus SDXC	100MB/s minimum write speed for DSLRs
Samsung	BAR Plus USB Flash Drive	420MB/s read speed, IP66 waterproof rating
Lexar	Professional 1066x CFast	CFast 2.0 interface with 533MB/s speed
PNY	Elite-X Pro USB-C	420MB/s transfer rates with USB 3.2 Gen 1

7. Selection Recommendations

Key selection criteria:

Match interface type (USB-C/Type-A, SD/microSD) with target device
Select speed class (UHS Speed Class 1/3, Video Speed Class) based on usage
Consider environmental factors (temperature, shock resistance)
Choose appropriate capacity with 20% overhead for system files
Verify endurance rating (P/E cycles) for frequent write operations

8. Industry Trend Analysis

Current development trends include:

Transition to 3D NAND architecture for higher density (1TB+ microSD)
Adoption of NVMe protocol in USB drives (PCIe Gen 4x2 interface)
Integration of biometric security features (fingerprint encryption)
Emergence of USB4 compatibility with 40Gbps speeds
Development of industrial-grade modules with extended temperature ranges (-40 C to +85 C)
Growing use of eco-friendly manufacturing processes and recyclable materials