350nh inductor

Hello,
I want to wind ACCURATELY a 300 and 350nH coils,
Can anyone suggest good site with L calculator

Thanks,
Ahmad,

Air coil ?
If it's so, use Nagaoka formula that can be found everywhere but these coils will absolutely require tuning.
You can not obtain exactly 300nH+-%0.5 tight tolerance with air coils.Also, these values are not standard values as can be found SMD or any kind..

Well, what're the standard values for them ?!

Thanks,
Ahmad,

ACCURATELY? - how accurate? - can you measure this accurately? - how accurate is your measurement system?

Standard values are to avoid people having to ask how to make a simple fixed value component.

Standard values ALL have a tolerance. There is no such thing as an exact value in the real world.

Good designers do not require exact values - these are avoided by good design.
The design need only be FIT-FOR-PURPOSE and no better.

Polymath

You should use L meter when winding inductors. Formula gives you no guarantee the coil will be accurate wound.

In EDA there is software in the link / updownload section...

Well, what's the name of that software? I dont know where's the upload section, please copy and paste download link..

Thanks in advance,
Ahmad,

http://www.elektroda.net/download/fi...9350395926ceca

this is for air core inductors.