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

Image	Part Number	Description / PDF	Quantity	Rfq
	SM651GE4 BD Silicon Motion	FERRISSD BGA SSD SATA SLCMODE 4G	0
	SM611GXB BD Silicon Motion	FERRISSD BGA SSD SATA MLC 32GB C	0
	MB611GX4DBD1 Silicon Motion	FERRI SSD MODULE MO297 SATA MLC	0
	MB611GX8DBD1 Silicon Motion	FERRI SSD MODULE MO297 SATA MLC	0
	SM681GXA AEST Silicon Motion	FERRI PCIE BGA PCIE 3D TLC NAND	0
	MB611GXBDBD1 Silicon Motion	FERRI SSD MODULE MO297 SATA MLC	0
	SM621GEA-BA Silicon Motion	FERRISSD BGA SSD SLC NAND I-TEMP	0
	MC651GX4DBD1 Silicon Motion	FERRI SSD MODULE MO300A SATA SLC	0
	SM689GXA AEST Silicon Motion	FERRI PCIE BGA PCIE 3D TLC NAND	0
	MD659GX8FCD3 Silicon Motion	FERRISSD M.2 2242 MODULE SSD SAT	0
	MB631GX4DBA1 Silicon Motion	FERRI SSD MODULE MO297A SATA SLC	0
	MB651GE8DBD1 Silicon Motion	FERRI SSD MODULE MO297 SATA SLCM	0
	MC651GX2DBD1 Silicon Motion	FERRI SSD MODULE MO300A SATA SLC	0
	SM619GXE DEST Silicon Motion	FERRISSD BGA SSD 3D TLC NAND DRA	0
	SM631GEB-BA Silicon Motion	FERRISSD BGA SSD SLC NAND I-TEMP	0
	SM621GE8-BA Silicon Motion	FERRISSD BGA SSD SLC NAND I-TEMP	0
	MC631GE1DBA1 Silicon Motion	FERRI SSD MODULE MO300A SATA SLC	0
	SM631GX8-BA Silicon Motion	FERRISSD BGA SSD SLC NAND C-TEMP	0
	ME619GXCFCD3 Silicon Motion	FERRISSD M.2 2280 MODULE SSD SAT	0
	SM619GXD CDZ Silicon Motion	FERRISSD BGA SSD MLC NAND DRAM C	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.