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Delkin Devices microSD/microSDHC

microSD / microSDHC

Product Highlights

  • Compliant with SD 2.0 & 1.1 Standards
  • Supports SD and SPI Modes
  • SD Capacities: 128MB – 2GB in SLC
  • SDHC Class 10 Capacities: 4GB – 16GB in SLC
  • All configurations support SMART
  • -40 to 85°C Operating Temp
  • Read / Write Speeds up to 23 / 21 MB/s*

*Capacity Dependent

Product Description

The perpetual drive to shrink electronics has made the tiny microSD form factor the fastest growing segment in the industrial and OEM space in recent years.  Since microSD cards are constructed as an encapsulated SIP (System In Package), they are also extremely rugged from a mechanical standpoint, able to withstand environments subject to shock and vibration. Whether just 512MB is needed to boot an application or 16GB is needed for extensive data logging, Delkin has a high endurance SLC microSD option available, rated for full industrial temperature operation.  Configurations are also available with SMART capability, allowing users to monitor the status of the card, including program/erase cycles consumed, spare block status, power cycles and an estimated remaining life. Delkin provides a dashboard tool for off-line SMART monitoring or the card data can be accessed directly via a library or SD commands.

As contrasted with commercial grade microSD cards, which can have frequent configuration changes to reduce cost, or which often utilize TLC flash, Delkin Industrial microSD cards are controlled with a locked bill of materials.  This means that no changes can be made to the flash, controller or firmware configuration without a part number change. Delkin also understands the importance of life cycle management, so that when a part must be discontinued, users are notified in advance, offered a last time buy opportunity and provided with qualification samples of the replacement part.

Delkin offers customization of microSD’s, including custom pad printing or content loading, and the cards are available with adapters converting them to full size SD.

In addition to industrial microSD, Delkin also offers full-size SLC SD and Extended Life Cycle (ELC) SD cards, as well as Utility SD and microSD cards, which are cost-effective MLC options for OEM applications.

Technical Specifications


Operating Temp
-40 to +85°C

Storage Temp
-50 to +100°C, dependent on card configuration. Refer to full specifications.

1500G, 0.5msec duration

20 – 80Hz / 1.52mm displacement
80Hz – 2000Hz, 20G acceleration

Reliability / Endurance

SLC: 234 TBW

> 2 million hours (0 to +25°C)
> 200,000 hours (60°C)

Capacity Range

128MB – 4GB
512MB – 16GB
Refer to full engineering specifications.



Sequential Read up to 27MB/s
Sequential Write up to 19MB/s

Refer to full engineering specifications.


1Per MIL-STD-810G, Method 516.6 Procedure I. Testing to other shock profiles available upon request.

2Per MIL-STD-810G, Method 514.6; Category 24. Testing to other vibration curves available upon request.

3TBW figures are representative for 4GB capacity based on optimal usage model. Contact Delkin for life estimates on other capacities or using your specific usage parameters.

4Performance figures shown are for highest capacity configuration, and will vary by capacity, host, usage model and other factors.


  • Compliant with SD Specification 3.0, backward compatible to 1.1 & 2.0
  • Operating BUS modes – SPI and SD
  • Advanced wear leveling and ECC
  • SMART support
  • Two different controller options available for application specific optimization
  • SD Adapters available
  • Customizable with custom pad printing, settings, content loading / duplication, etc.
  • Compliant with European Union Directive 2011/65/EU (RoHS)

Secure Digital


Delkin Devices’ full-size SD cards utilize a true industrial controller and SLC flash to deliver a rugged, high endurance solution for applications that are write intensive, subject to extreme environmental conditions or which require long term field reliability when recording mission critical data.

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microSD / microSDHC

The perpetual drive to shrink electronics has made the tiny microSD form factor the fastest growing segment in the industrial and OEM space in recent years.

learn more

Utility SD / microSD

Delkin Devices developed the Utility concept for OEM’s and embedded designers that need a cost-effective, yet controlled storage solution. In many cases, the cost of the host and the usage model does not support the use of high-endurance SLC flash, yet the application still requires an industrial-grade product, consistent performance and life cycle management.

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