Part Number: ISO7741
When I read the ISO7741 datasheet, I cannot understand the overvoltage category spec. Could you please explain what does this spec means?
In the blue circle, how can we get I-III for the DW-16 package? What do the two numbers I and III mean here? Thanks.
Overvoltage category of a product defines where all it can be installed / used with respect to main supply voltages. i.e., it indicates whether a product can be used at the origin of mains installation (like energy meter requiring Cat IV), at fixed installations with special requirements (like circuit breaker requiring Cat III), in energy-consuming equipment supplied from fixed installation (like appliances requiring Cat II) or in sections requiring low voltages (like protected electronic circuits requiring Cat I). Based on what category an isolation device supports, it can be used in the above class of products accordingly.
In quantitative terms, overvoltage category also represents the impulse transient voltage rating of the isolator. Please see below table indicating impulse transient voltage requirement to meet a given overvoltage category. Let me know if you have any questions, thanks.
We are glad that we were able to resolve this issue, and will now proceed to close this thread.
If you have further questions related to this thread, you may click "Ask a related question" below. The newly created question will be automatically linked to this question.
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.