Solid State Drives (SSDs), Hard Disk Drives (HDDs)

Image	Part Number	Description / PDF	Quantity	Rfq
	SM681GXC AEST Silicon Motion	FERRI PCIE BGA PCIE 3D TLC NAND	0
	MB631GE1DBA1 Silicon Motion	FERRI SSD MODULE MO297A SATA SLC	0
	SM621GX1-BA Silicon Motion	FERRISSD BGA SSD SLC NAND C-TEMP	0
	SM619GXB CDZ Silicon Motion	FERRISSD BGA SSD MLC NAND DRAM C	0
	MB631GXBDBA1 Silicon Motion	FERRI SSD MODULE MO297A SATA SLC	0
	MC631GE4DBA1 Silicon Motion	FERRI SSD MODULE MO300A SATA SLC	0
	SM621GXA-BA Silicon Motion	FERRISSD BGA SSD SLC NAND C-TEMP	0
	ME659GXBFCD3 Silicon Motion	FERRISSD M.2 2280 MODULE SSD SAT	0
	SM659GEA CDZ Silicon Motion	FERRISSD BGA SSD SLCMODE NAND DR	0
	MB631GEBDBA1 Silicon Motion	FERRI SSD MODULE MO297A SATA SLC	0
	SM651GE2 BD Silicon Motion	FERRISSD BGA SSD SATA SLCMODE 2G	0
	MB619GXDFCD3 Silicon Motion	FERRI SSD MODULE MO297 SATA DRAM	0
	SM689GXE AEST Silicon Motion	FERRI PCIE BGA PCIE 3D TLC NAND	0
	SM611GXA BD Silicon Motion	FERRISSD BGA SSD SATA MLC 16GB C	0
	SM631GEA-BA Silicon Motion	FERRISSD BGA SSD SLC NAND I-TEMP	0
	SM659GXA CDZ Silicon Motion	FERRISSD BGA SSD SLCMODE NAND DR	0
	SM619GXA CDZ Silicon Motion	FERRISSD BGA SSD MLC NAND DRAM C	0
	MB631GEADBA1 Silicon Motion	FERRI SSD MODULE MO297A SATA SLC	0
	SM611GX8 BD Silicon Motion	FERRISSD BGA SSD SATA MLC 8GB C-	0
	ME619GXBFCD3 Silicon Motion	FERRISSD M.2 2280 MODULE SSD SAT	0

Solid State Drives (SSDs), Hard Disk Drives (HDDs)

1. Overview

Storage devices are critical components in modern computing systems, enabling persistent data retention and rapid access. Memory cards (e.g., SD/microSD) provide portable storage for consumer electronics. SSDs use NAND flash memory for high-speed non-volatile storage, while HDDs rely on magnetic spinning platters for cost-effective large-capacity storage. These technologies collectively support applications ranging from personal devices to enterprise data centers.

2. Main Types and Functional Classification

Type	Function Characteristics	Application Examples
SD Cards	Standardized portable storage with varying speed classes	Digital cameras, laptops
microSD	Compact form factor for mobile devices	Smartphones, drones
CF Cards	High durability for professional imaging	DSLR cameras, industrial equipment

3. Structure and Components

SSDs consist of a controller (managing data flow), NAND flash memory chips (storing data), and DRAM cache (accelerating access). HDDs contain magnetic platters (data storage), read/write heads (data access), spindle motors (platter rotation), and actuator arms (head positioning). Memory cards integrate flash memory with controllers in compact packages.

4. Key Technical Specifications

Parameter	Importance	SSD Example	HDD Example
Sequential Read/Write Speed	Affects data transfer efficiency	3500-7000 MB/s (NVMe)	100-200 MB/s (SATA)
Random 4K IOPS	Measures small-file access performance	50,000-100,000 IOPS	100-200 IOPS
Durability (TBW)	Indicates lifespan	150-1500 TBW	Relevant but less quantified

5. Application Fields

SSDs: Gaming PCs, enterprise servers, cloud storage
HDDs: NAS systems, surveillance storage, archival
Memory Cards: Action cameras, IoT devices, automotive systems

6. Leading Manufacturers and Products

Manufacturer	Product Example	Key Features
Samsung	980 Pro NVMe SSD	PCIe 4.0, 7000 MB/s
Western Digital	Ultrastar DC HC550 HDD	18TB, helium-sealed
SanDisk	Extreme microSDXC	170MB/s, UHS-I

7. Selection Recommendations

Consider interface compatibility (e.g., SATA vs NVMe), required throughput, endurance ratings, and cost-per-GB metrics. For enterprise environments prioritize MTBF and error correction features. Consumer applications should balance capacity and speed class (e.g., V30/U3 for 4K video recording).

8. Industry Trends

3D NAND stacking enables terabit-scale SSDs, while PCIe 5.0 interfaces will double current speeds. HDDs adopt SMR and HAMR technologies to reach 50+TB capacities. Memory cards transition to SD Express (PCIe Gen3) for 985MB/s performance. Hybrid storage solutions combining fast SSD caching with high-capacity HDDs gain traction in data centers.