# Physical attributes

## **Form Factors**

SIMs can be provided in various Form Factors which usually depends on the use case and the environment the SIM is being used in. ConnectedYou SIM is available in 2 Form Factors:

![](https://cdn.shopify.com/s/files/1/0090/7899/7107/files/SIm_eSIM_features_480x480.png?v=1623847200)

## **Grades**

The physical qualities of the SIMs are also differentiated based on usage. The 3 grades of SIMs offered are: Standard, Industrial & Automotive.

<table data-header-hidden><thead><tr><th width="168"></th><th width="174"></th><th width="188.61725067385444"></th><th></th></tr></thead><tbody><tr><td><strong>Features</strong></td><td><strong>Standard</strong></td><td><strong>Industrial</strong></td><td><strong>Automotive</strong></td></tr><tr><td><strong>SIM Chip</strong></td><td>ST33G1M2-ST</td><td>ST33G1M2-M</td><td>ST33G1M2-A</td></tr><tr><td><strong>Use case</strong></td><td>Ideal for standard applications</td><td>Resistant to high temperature, shocks, vibration s and humidity</td><td>Resistant to high temperature, shocks, vibrations and humidity. Automotive requirements compliancy</td></tr><tr><td><strong>Applicable for</strong></td><td>3in1 plug-in SIM</td><td>3in1 plug-in SIM<br>embedded SIM MFF2</td><td>embedded SIM MFF2</td></tr><tr><td><strong>Certifications</strong></td><td>-</td><td>JEDEC</td><td>JEDEC, AEC Q100 / TS 16 949</td></tr><tr><td><strong>Data retention</strong></td><td>10 years</td><td>17 years data retention at 85ºC; 10 years at 105ºC</td><td>17 years data retention at 85ºC; 10 years at 105ºC</td></tr><tr><td><strong>Operating temperature range</strong></td><td>-25ºC to +85ºC</td><td>-40ºC to +105ºC</td><td>-40ºC to +105ºC</td></tr><tr><td><strong>Erase/Write cycles</strong></td><td>100,000</td><td>500,000</td><td>500,000</td></tr><tr><td><strong>Voltage</strong></td><td>1.8V, 3V, 5V</td><td>1.8V, 3V, 5V</td><td>1.8V, 3V, 5V</td></tr><tr><td><strong>Operating supply voltage</strong></td><td>1.62V – 5.5V</td><td>1.62V – 5.5V</td><td>1.62V – 5.5V</td></tr><tr><td><strong>FLASH</strong></td><td>1280K</td><td>1280K</td><td>1280K</td></tr><tr><td>R<strong>AM</strong></td><td>30K</td><td>30K</td><td>30K</td></tr><tr><td><strong>Internal clock</strong></td><td>up to 25 MHz</td><td>up to 25 MHz</td><td>up to 25 MHz</td></tr><tr><td><strong>External clock</strong></td><td>from 1 MHz up to 10 MHz</td><td>from 1 MHz up to 10 MHz</td><td>from 1 MHz up to 10 MHz</td></tr><tr><td><strong>I/O ISO 7816-3</strong></td><td>(T=0)</td><td>(T=0)</td><td>(T=0)</td></tr><tr><td><strong>I/O speed</strong></td><td>8, 16, 31, 32, 64, 186, 372 clocks per ETU</td><td>8, 16, 31, 32, 64, 186, 372 clocks per ETU</td><td>8, 16, 31, 32, 64, 186, 372 clocks per ETU</td></tr></tbody></table>

{% hint style="info" %}
Data sheets available for download

* [ST33G1M2-ST](https://content.connectedyou.io/Docs/DataSheet%20ST33G1M2-ST.pdf)
* [ST33G1M2-M](https://content.connectedyou.io/Docs/DataSheet%20ST33G1M2-M.pdf)
* [ST33G1M2-A](https://content.connectedyou.io/Docs/DataSheet%20ST33G1M2-A.pdf)
  {% endhint %}

## Hardware Packaging specifications

Refer to MFF2 specifications for hardware packaging specifications.

{% content-ref url="mff2-specifications" %}
[mff2-specifications](https://docs.connectedyou.io/knowledge-base/sim-esims/connectedyou-sim/mff2-specifications)
{% endcontent-ref %}