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What is minimum clearance of opto isolated DALI signal entering offline LED driver?

Discussion in 'General Electronics Chat' started by Flyback, Aug 10, 2017.

  1. Flyback

    Flyback Well-Known Member

    Jan 5, 2007

    We have a DALI signal which comes into our non isolated offline LED driver. The DALI signal is isolated from the receiver in the LED driver by a TCLT1000 optocoupler..

    TCLT opto datasheet

    The problem is , that its too long to fit on the PCB. We need to use a smaller opto…..

    Do you think we will be able to use the LTV-356 optocoupler which is 3mm shorter….
    http://www.mouser.com/ds/2/239/LTV-356T Series-1308-301539.pdf

    Will the clearance still be adequate with the LTV-356 opto? Also, if not, then can we just use a cutout in the PCB to increase clearance like that?

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