Looking for inductor 200uH/1.5A, under 0.400" footprint

Apr 12, 2010 22 Replies
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That's only rated for 300mA. Yuck.

A 10mm inductor, 1A i_sat, 800mA i_dc. Used at 1.5A--past i_sat--it's only ~140uH.

Are you sure you wouldn't rather use a 12mm inductor?

This 12mm 270uH part handles 1.2A rms, i_sat =3D 1.6A. Cheap. In stock at DigiKey.

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271KLTR-ND

Total energy storage (L * i^2 / 2), goes roughly with volume. If you want to store more i^2, you'll need a bigger inductor.

SMD parts don't get all that tall, otherwise they'd snap or shear off.

Or, you could stack up two in series....?

-- Cheers, James Arthur

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J

I am afradid its worse. Idc1 is 1000mA and they say in the footnote that is the point where the inductance is down by 30%, meaning 154uH left. What happens past that point would be unknown.

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Can't, no re-layout passible on this one.

Well, a cube would be 10mm by 10mm by 10mm and cubes are stable enough. That would be twice as high as this inductor is. I was hoping someone would know a cube inductor.

:-)

Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
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D

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-- it's

stock

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I'd hoped the 12mm unit might squeeze in the same spot, or maybe you could make an adapter board. Yucky, but we've all had to do it.

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That's roughly what you'll need -- 1,000mm^3.

-- Cheers, James Arthur

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