microSD メモリカード

セキュア デジタル (SD) メモリ カードは、ナビゲーション システムなどの読み取り専用アプリケーションから、ビデオ録画やデータ ロギング用のブート メディアの用途、また産業および自動車アプリケーションで広く使用されています。 Swissbit の産業用セキュア デジタル (SD) カード シリーズは、高い持続的パフォーマンスと耐久性に最適化されて設計されており、過酷なな環境条件に耐えられるよう、Swissbit の自社工場で製造およびテストされています。

SLC ベースの S-600μ / S-250μ は最高の耐久性を実現し、書き込み耐久性に優れています。 新しい S-52μ は自動車およびビデオ録画アプリケーションをターゲットとし、S-50μ /S-55μ は産業用途の高信頼性ユースケースをターゲットとしています。 3D pSLC バージョン S-56μ、特に高耐久性 S-58μ カードは、最高のコスト/耐久性比を提供します。

Series Name



S-50u / S-55u

S-56u / S-58u


Data Transfer Mode

SD 3.0, UHS-1,
speed class 10/U1

SD 6.1, UHS-I, speed class 10/U3/V30/A2
High endurance type

SD 6.1, UHS-I,
speed class 10/U3/V30/A2
High reliability type



Outline Dimensions

15 x 11 x 0.7 / 1 mm

Flash Type





Density Range

512 MB - 2 GB

32-128 GB

S-50u: 16-128 GB
S-55u: 64-256 GB

S-56u: 4-32 GB
S-58u: 16-64 GB

Data Retention

10 years @ life begin
1 year @ life end

(P/E Cycles)


3k 3k

S-56u: up to 100k
S-58u: up to 60k

Operating Temperature

Extended: -25°C to +85°C
Industrial: -40°C to +85°C

Storage Temperature

-40°C to +100°C


Sequential Read (MB/s)
Sequential Write (MB/s)
Random 4KB Read (IOPS)
Random 4KB Write (IOPS)


up to 94
up to 50
up to 1,200
up to 1,200


up to 95
up to 84
up to 1,960
up to 780


up to 91 / 97
up to 38 / 60
up to 2,010 / 1,970
up to 1,360 / 760


up to 95 / 97
up to 83 / 84
up to 4,950 / 3,950
up to 1,800 / 1,080


≥ 3,000,000 hours


1,500 G


50 G


85 % RH 85°C, 1,000 hrs


2.7 – 3.6 V

Use Case

Optimized for high read/write traffic for demanding industrial applications.

Optimized for seq. write use cases such as video recording, dash/body cams
Automotive type AEC-100-3

High reliability type
Optimized for random write use cases such as industrial data logging

Features & Tools

Read Disturb Management, Autonomous Data Care Management
Real industrial temperature range with full cross temperature support
Proven FW based Power Fail Safety
Manufactured in a TS 16949 certified factory
SBDMTool & SDK for detailed Life Time Monitoring

Support SD SPI mode
Proven FW based Power Fail Safety
Sophisticated Wear Leveling & Bad Block management
Autonomous Data Care Management
SBDMTool & SDK for detailed Life Time Monitoring

Conformal coating
Conformal Coating

Swissbit offers a special protective coating on selected products. This coating is a thin polyurethane film that protects against aggressive environmental conditions such as dust, moisture, or corrosive gas.

Data care management
Data Care Management

Various effects like data retention, read disturb limits, or temperature can impact data reliability. The latest generation of Swissbit products use special methods to maintain and refresh the data for higher data integrity.

Electrostatic discharge and electromagnetic interference
ESD and EMI safe

The product designs are in line with the latest regulations for electrostatic discharge and electromagnetic interference. Swissbit strives to exceed these limits with our own in-house technology and production capabilities, for example with System-in-Package (SiP) competence.

Life Time Monitoring (LTM)
Life time monitoring (LTM)

The Swissbit Life Time Monitoring feature enables users to access the memory device’s detailed Life Time Status and allows prediction of imminent failure, avoiding unexpected data loss. This feature uses an extended S.M.A.R.T. (Self-Monitoring, Analysis and Reporting Technology) interface or vendor-specific commands to retrieve the Flash product information.


The longevity product lines use special components with a long-term supply commitment of up to 10 years. These products offer lowest TCO in demanding applications with high requalification cost.

Power Fail Protection & Recovery
Power fail protection

Intelligent Power Fail Protection and Recovery protects data from unexpected power loss. During an unintentional shutdown, firmware routines and an intelligent hardware architecture ensure that all system and user data will be stored to the NAND.

Shock & Vibration
Shock and vibration

Robustness is one of our key specification targets. The design, assembly and use of selected materials guarantee an extremely solid design which has been validated by extensive testing.

Write Amplification Factor
WAF reduction

The WAF (write amplification factor) for MLC-based products is reduced by combining a paged based FW block management with a powerful card architecture and configuration settings.

Wear leveling
Wear leveling

Sophisticated Wear Leveling and Bad Block Management ensure that Flash cells are sparingly and equally used in order to prolong life time of the device.

Wide temperature support
Wide temperature support

Swissbit‘s embedded memory and storage solutions are designed and approved for reliable operation over a wide temperature range. The products are verified at temperature corners and prestressed with a burn-in operating functional test (Test During Burn In – TDBI).