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Intelligent Memory GL1 Emerald Industrial microSD Card 3.0: High-Performance Storage Solutions

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GL1 Emerald Industrial microSD Card 3.0 Overview

In an age where data security, longevity, and reliability are paramount, Intelligent Memory steps up to the plate with its groundbreaking GL1 Emerald Industrial MicroSD cards. This new offering not only revolutionizes the way we think about data storage but also sets a new benchmark for the industry in terms of durability and performance. Let's delve into what makes the GL1 Emerald not just a product but a pivotal innovation in the realm of electronic components.

Unmatched Longevity and Fixed BOM

At the core of the GL1 Emerald range is the commitment to longevity. With a promise of 10+ years of service life, coupled with a fixed Bill of Materials (BOM), Intelligent Memory addresses a critical need for stability in the rapidly evolving tech landscape. This approach ensures that users can count on a consistent, reliable product throughout its lifecycle, a rarity in today's market where frequent changes to components can disrupt product stability and compatibility.

Product Features and Benefits

The GL1 Emerald range is not just about longevity; it's packed with features designed to meet the rigorous demands of industrial applications:

  • Full Compliance with SD Specifications: Ensuring compatibility and reliability across devices, the GL1 Emerald adheres to the SD Memory Card Specifications, covering the Physical Layer, File System, and Security Specifications.

  • Advanced Data Protection: With features like CPRM (Content Protection for Recordable Media) and optional password protection, your data is safeguarded against unauthorized access.

  • Robust Design: Designed for resilience, the GL1 Emerald supports hot plugging and boasts +4KV/-4KV ESD protection, ensuring data integrity even in challenging conditions.

  • Efficient Power Use and High Performance: Operating within a voltage range of 2.7 ~ 3.6V, it delivers impressive sequential read and write speeds of up to 23 MB/s and 21 MB/s, respectively.

Capacities and Performance

The product has a capacity range of 512MB to 2GB. ​

The performance of the product is specified in terms of sequential read and write speeds. ​ The sequential read speed is up to 23 MB/s and the sequential write speed is up to 21 MB/s. ​

Durability and Reliability

Durability and reliability are important factors to consider when evaluating the performance and lifespan of a product. In the case of the SD memory card described in the document, the durability and reliability information can be found in the Product Specification section. ​


The durability of the SD memory card is specified in terms of Terabytes Written (TBW), which is the total amount of data that can be written to the card before it reaches the end of its lifespan.

The TBW values for different capacities of the SD memory card are provided in Table 4 - Tera Bytes Written. For example, the 512MB capacity card has an estimated TBW of 26 terabytes, the 1GB capacity card has an estimated TBW of 52 terabytes, and the 2GB capacity card has an estimated TBW of 104 terabytes. ​

It is important to note that the actual lifetime may vary depending on the platform and application. ​


The reliability of the SD memory card is specified in terms of Mean Time Between Failures (MTBF), which is a measure of the average time between failures.

The MTBF value for the SD memory card is specified as 2,000,000 hours, indicating a high level of reliability.

It is important to consider these durability and reliability specifications when selecting and using the SD memory card to ensure that it meets the requirements of the intended application and can withstand the expected usage conditions. ​

Compliances and Special Features


  • RoHS (Restriction of Hazardous Substances): The product is compliant with RoHS regulations, which restrict the use of certain hazardous substances in electrical and electronic equipment.

  • CE (Conformité Européene): The product meets the requirements of European Union directives and is eligible for sale in the European market.

  • FCC (Federal Communications Commission): The product complies with the regulations set by the FCC, which governs the use of radio frequency devices in the United States.

  • WEEE (Waste Electrical and Electronic Equipment): The product is compliant with WEEE regulations, which aim to reduce the environmental impact of electronic waste.

Special Features:

CPRM (Content Protection for Recordable Media) (optional): The product supports CPRM, which is a content protection mechanism for recordable media. ​ This feature allows for secure recording and playback of copyrighted content.

Password Protection of cards (optional): The product has the capability to enable password protection for the SD cards, providing an additional layer of security for the stored data.

Technical Specifications

The technical specifications of the product are as follows:

Product Summary:

Capacity Range: 512MB - 2GB ​

Form Factor: microSD Card ​

Host Interface: SD3.0 ​

Speed Class: CLASS 6 ​​

Performance: Sequential read: up to 23 MB/s, Sequential write: up to 21 MB/s ​​

Reliability: MTBF: 2 million hours, 16 UBER: <1 sector / 10bits read ​

Order Information:

Part Numbers:

IMSDUDA0D6B5B0I1A0A0000 (512MB)


IMSDUDA2D6B5B0I1A2A0000 (2GB) ​

Product Information:

Compliant Specifications: Compliant with Part 1 Physical Layer Specification Ver. ​ 3.01, Part 2 File System Specification Ver. ​ 3.00, and Part 3 Security Specification Ver. ​ 3.00

Bus Speed Mode: Non-UHS mode, Default Speed Mode: 3.3V signalling, frequency up to 25MHz, data transfer up to 12.5MB/sec, High Speed Mode: 3.3V signalling, frequency up to 50MHz, data transfer up to 25MB/sec ​

Product Features: Support SD SPI mode, Designed for read-only and read/write cards, Support CPRM (Content Protection for Recordable Media) of SD Card (optional), Support Hot Plug, Password Protection of cards (optional), +4KV/-4KV ESD protection in contact pads, Operation voltage range: 2.7 ~ 3.6V, Copyrights Protection Mechanism, Advanced Flash Management, ECC (Error Correction Code), Static and Dynamic Wear Levelling, Bad Block Management, Overprovision ​

Electrical Specifications:

  • DC Characteristic: Bus Operating Conditions - Threshold Level: Supply Voltage: 2.7V - 3.6V, Output High Voltage: 0.75VDD V, Output Low Voltage: 0.125VDD V, Input High Voltage: 0.625*VDD V, Input Low Voltage: VSS-0.3 V, Power Up Time: 250 ms ​

  • Bus Signal Line Levels: Bus Operation Conditions - Signal Line's Load: Pull-up resistance: 10-100 kΩ, Total bus capacitance for each signal line: 40pF, Card Capacitance for each signal pin: 10pF, Maximum signal line inductance: 16nH, Pull-up resistance inside card (pin1): 10-90 kΩ, Capacity Connected to Power Line: 5uF ​

Environmental Specifications:

Temperature - Operation: -40°C ~ 85°C, Storage: -40°C ~ 85°C

Humidity - Operation: 55°C, 95% RH, Storage: 55°C, 95% RH

Shock: 1500G, 0.5ms, Vibration: 20Hz2000Hz/20G, Drop: 150cm free fall Bending: ≥10N, Torque: 0.1N-m or +/-2.5deg

Durability: 10,000 times mating cycle

Non-operation ESD: Contact: +/- 4KV, Air: +/- 15KV, Operation: Air: +/- 8KV


The GL1 Emerald Industrial MicroSD card range from Intelligent Memory is a game-changer in the world of data storage, offering unmatched longevity, reliability, and performance. Whether you're an engineer, CTO, or procurement specialist, this product promises to meet and exceed your expectations, ensuring your projects and devices run smoothly and securely for years to come.

For those interested in integrating cutting-edge storage solutions into their projects, the GL1 Emerald Industrial MicroSD range is not just an option; it's the future. Get in touch with us at Ineltek for more information and to discover how the GL1 Emerald can elevate your data storage strategies to new heights.



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