microSD Memory Cards(S-50u / S-56u)

microSD Memory Cards(S-50u / S-56u)

  • industrial 3D NAND
  • S-56: pSLC, S-50: TLC
  • Page based Flash management
  • High IOPS rate and endurance
  • Autonomous Data Care Management
  • Industrial grade SD Card
  • Power Fail protection & Read Disturb Management


The latest Micro SD memory card series S-30u and S-50u are based on 3D NAND TLC and offer best cost efficiency. The S-30u is targeting highly cost sensitive read mostly applications while the S-50u is a true industrial SD Card for all use cases. For high endurance demand the pSLC version S-56u is the ideal solution. These cards support Class 10, U3 mode.

The continued series S-45u (MLC version), S-46u (pSLC version), S-450u (SLC) and S-455u (SLC version) include the same set of sophisticated features and, through the implementation of UHS-I, support data transfer rates of up to 48 MB/s. The combination of MLC (Multi Level Cell) NAND Flash with an innovative controller and page based firmware technology enables prolonged data retention and extended life cycles despite the write endurance limitations of MLC Flash. The S-45u, S-46u and S-455u Micro SD memory cards excel with a random write data rate of up to 1,400 IOPS.

The special firmware features of the new series include a powerful built-in Error Correction, Read Retry, Autonomous Data Care Management, Life Time Monitoring & diagnostic features, Randomizer, Wear Leveling & Bad Block Management algorithms and intelligent Power Fail Protection.

All Swissbit Micro SD Cards can withstand extreme environmental conditions. They provide the highest level of mechanical stability and enhanced ESD protection. Furthermore, the hard gold Micro SD connectors endure a minimum of 20,000 insertion cycles.

Series Name S-200u/S-250u
S-455u/450u S-46u/45u S-30u S-56u/50u

Data Transfer Mode

SD 2.0, Class 6 / 10 SD 3.0, Class 10, UHS-I SD 6.1, Class 10, UHS-I, V30, A1 SD 6.1, Class 10, UHS-I, A1
Connector microSD
Outline Dimensions 15 x 11 x 0.7 / 1 mm
Flash Type SLC S-46u: pSLC
S-45u: MLC / 3D MLC
Density Range S-250u: 512 MB -2 GB
S-300u: 1 GB -8 GB
512 MB-8 GB S-46u: 2-64 GB
S-45u: 4-128 GB
32-256 GB S-56: 4-32 GB
S-50: 16-128 GB
Data Retention 10 years @ life begin

1 year @ life end

(Flash Cell Level)
100k P/E Cycles
TO part number60k P/E
MT part number
20k / 3k P/E Cycles

endurance optimized

1k P/E Cycles 30k / 3k P/E Cycles
Operating Temperature Extended: -25°C to +85°C

Industrial: -40°C to +85°C

Extended: -25°C to +85°C Extended:
-25°C to +85°CIndustrial:
-40°C to +85°C
Storage Temperature -40°C to +85°C -40°C to +100°C -40°C to +85°C -40°C to +100°C

Sequential Read (MB/s)

Sequential Write (MB/s)

Random 4KB Read (IOPS)

Random 4KB Write (IOPS)


up to 19 / 24 / 24
up to 21 / 11 / 22
up to – / 1,580 / –
up to – / 29 / –


up to 40 / 30
up to 28 / 24
up to 1,280 / 1,200
up to 1,540 / 28


up to 42 / 44
up to 40 / 19
up to 1,400 / 1,350
up to 1,250 / 950


up to 95
up to 85
up to 1,700
up to 1,050


typ 95 / 91
typ 84 / 38
typ 2,050 / 2,010
typ 920 / 1,360

MTBF ≥ 3,000,000 hours
Shock 1,500/1,000 G 1,500 G
Vibration 50 / 15 G 50 G
Humidity 93 % RH 40°C, 500 hrs 85 % RH 85°C, 1,000 hrs
Voltage 2.7 – 3.6 V Normal
Power Consumption Read typ 30 / 50 mA
Write typ 40 / 50 mA
Read typ 50 mA
Write typ 60 mA
Read typ 75 mA
Write typ 80 mA
Read typ 80 mA
Write typ 100 mA
Read typ 110 mA
Write typ 110 mA
Features & Tools Proven Power Fail Safety

Advanced Wear Leveling & Bad Block management

S-450u block based FTL /
S-455u, S-45u, S-46u page based FTL
Proven Power Fail Safety
Sophisticated Wear Leveling & Bad Block management
Autonomous Data Care Management
SBLTM Tool & SDK for detailed Life Time Monitoring
Support SD SPI mode
Static and Dynamic
Wear Leveling
Bad Block Management
Auto-Read Refresh
Embedded Mode
Support SD SPI mode
Proven Power Fail
Sophisticated Wear
Leveling & Bad Block
Autonomous Data Care
SBLTM Tool & SDK for
detailed Life Time
Addcom Solution Pte Ltd