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ISO7841: UL Conditions of Acceptability for ISO7841 and ISO784x series devices

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Replies: 10

Views: 193

Part Number: ISO7841

Hello,

I am planning to use ISO7841 and ISO784x series digital isolators for a Medical Device. The datasheet states that it is Certified according to UL1577 Component Recognition Program. Before we proceed, our UL testing lab recommends us to get the UL “Conditions of Acceptability” for this device. This will help us to verify that we can use this product for our intended purpose.

Could you please help me get the UL “Conditions of Acceptability” for this device and ISO784x series digital isolators.

Best regards,

Buddika

  • Hi Buddika,

    Thank you for posting to E2E. Attached to this reply (below) are UL 1577 Conditions of Acceptability for ISO devices certified with the ISO7841. Please let us know if there is additional support we can provide for your project!


    Respectfully,
    Manuel Chavez

    ISO _ UL Product iQ.pdf

  • In reply to Manuel Chavez:

    Hi Manuel,

    Thank you very much for the reply. This is very helpful. Could you also please provide UL 1577 Conditions of Acceptability for IOSW784x series ( the ones that have isolated power) devices?

    Best regards

    Buddika

  • In reply to Buddika Sumanasena:

    Hi Buddika,

    You're welcome! ISOW784x and ISO784x devices share a certificate for UL 1577, so they have the same Conditions of Acceptability.


    Thank you,
    Manuel Chavez

  • In reply to Buddika Sumanasena:

    Hi Manuel,

    Thank you very much for the information. This is very helpful.  Is the term "Single protection, non-optical isolators" a technical term used by TI or a term used by UL to describe a device. Could you please explain the difference between "Double protection" and "Single protection" in this context?

    I will contact our testing laboratory representative with this information. If any additional information is required I will contact you.

    Best regards

    Buddika

  • In reply to Buddika Sumanasena:

    Hi Buddika,

    "Single protection, non-optical isolators" is a term defined by UL for certification purposes; similar terminology is used by VDE and other certification agencies. For example, our devices provide "reinforced insulation" according to VDE, CSA, CQC, and TUV standards which have different requirements. A link to an E2E post listing the differences between UL's "Single" and "Double" protection terms is found below.


    For medical applications, our ISO78xx, ISO77xx, and ISOW784x are CSA certified for 2 Means of Patient Protection. Please do let us know if additional information is needed by responding to this post or creating a new thread using the red and yellow buttons in the top right corner of this window.


    Thank you for your time,
    Manuel Chavez

  • Hi Buddika,

    Manuel already provided you the general Conditions of Acceptability. I'm attaching individual Recognition Report for ISO784x devices which provides some additional Conditions of Acceptability. Please review those conditions on the last page of this document.

    UL Certificate_ISOW78xx_ISO7xxx_5xxx_1xxx.pdf

    Saleem Marwat

    System Engineer

    Isolation Products, Texas Instruments

  • In reply to Saleem Marwat:

    Hi Saleem,

    Thank you very much.

    Best regards,

    Buddika

  • In reply to Saleem Marwat:

    Hello Saleem,

    Would it be possible to get the CSA and VDE acceptance reports for these devices?

    Best regards,

    Buddika

  • In reply to Buddika Sumanasena:

    Hi Buddika,

    CSA and VDE certificates are available online at the following website. Go to the 'More Literature' section on this webpage:

    Saleem Marwat

    System Engineer

    Isolation Products, Texas Instruments

  • In reply to Saleem Marwat:

    Hello Saleem,

    Thank you very much. I didn't know that you had these reports available to download on your website.

    Best regards,

    Buddika