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

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Flyback

Well-Known Member
Hello,

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
https://www.vishay.com/docs/83515/tclt1000.pdf

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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