> For the complete documentation index, see [llms.txt](https://docs.connectedyou.io/knowledge-base/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.connectedyou.io/knowledge-base/sim-esims/connectedyou-sim/physical-attributes.md).

# 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="/pages/DmwphoL7jTv5EFOrRRGg" %}
[MFF2 Specifications](/knowledge-base/sim-esims/connectedyou-sim/mff2-specifications.md)
{% endcontent-ref %}


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.connectedyou.io/knowledge-base/sim-esims/connectedyou-sim/physical-attributes.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.