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Q&A Transformer - Vsec or Current rating parameter

I am looking at the datasheet of the 7508170315(link) transformer and something seems strange to me. If I connect this to a 12V supply and expose it to 10us pulse: 12V*10us/475uH = 252mA which ...

2 answers · posted 4y ago by 2kind‭ · last activity 4y ago by Olin Lathrop‭

Question transformer

#2: Post edited by

2kind‭ · 2020-12-16T23:53:15Z (about 4 years ago)

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I am looking at the datasheet of the 7508170315([link](https://www.mouser.co.uk/datasheet/2/445/760390015-1724363.pdf)) transformer and something seems strange to me.
![Itable from datasheet](https://electrical.codidact.com/uploads/n4rdf2TVFfTahg8tAx8pNduk)
If I connect this to a 12V supply and expose it to 10us pulse:
12V*10us/475uH = 252mA which is apparently less than the 350mAAC - is it actually? What 350mAAC mean in this case?
However, this is clearly violating the 11Vus spec(12V*10us=120Vus) which will certainly saturate the transformer core.
~~Which parameter should I look at here!~~

I am looking at the datasheet of the 7508170315([link](https://www.mouser.co.uk/datasheet/2/445/760390015-1724363.pdf)) transformer and something seems strange to me.
![Itable from datasheet](https://electrical.codidact.com/uploads/n4rdf2TVFfTahg8tAx8pNduk)
If I connect this to a 12V supply and expose it to 10us pulse:
12V*10us/475uH = 252mA which is apparently less than the 350mAAC - is it actually? What 350mAAC mean in this case?
However, this is clearly violating the 11Vus spec(12V*10us=120Vus) which will certainly saturate the transformer core.
Which parameter should I look at here?

#1: Initial revision by

2kind‭ · 2020-12-16T23:52:51Z (about 4 years ago)

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Transformer - Vsec or Current rating parameter

I am looking at the datasheet of the 7508170315([link](https://www.mouser.co.uk/datasheet/2/445/760390015-1724363.pdf)) transformer and something seems strange to me. 
![Itable from datasheet](https://electrical.codidact.com/uploads/n4rdf2TVFfTahg8tAx8pNduk)

If I connect this to a 12V supply and expose it to 10us pulse:
12V*10us/475uH = 252mA which is apparently less than the 350mAAC - is it actually? What 350mAAC mean in this case?

However, this is clearly violating the 11Vus spec(12V*10us=120Vus) which will certainly saturate the transformer core.

Which parameter should I look at here!

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