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Old 19th May 2011, 06:45 PM   #11
digits is offline digits
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I'll let you know tommorrow eve if I got the stuff, boards are comming from the factory after which there is a whole chain of people to get the stuff to me, anyway, one of them also ordered some samples for me (not for audio application), as it fits with another chip form the same manufacturer. I'll have to see how many there are, I just need like 4, as we pretty much discarded that prototype due to part sourceing delays.

It is sometimes usefull to find out who the wholesale electronic distributors in your country is. Even way over here in the sticks I can get stuff drom digikey, farnell, national etc... they all have distributors who sells their stuff, the benefit is that those distributors take larger orders which offset the major shipping charges, worst case they might ask you to buy a hole tube of a component.

Last edited by digits; 19th May 2011 at 06:49 PM.
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Old 19th May 2011, 08:51 PM   #12
Bas Horneman is offline Bas Horneman  Netherlands
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Quote:
Some say IXCP10M45S is better. What do you people think for using as CCS in tube circuits
A single 10M45S is better than a single DN2540. But a cascaded DN2540 beats a 10M45S big time. Not sure if you can cascade 10M45S.

Check this out: CCS performance measurments

Quote:
Mouser shipping is great on in Europe. It is free Fedex when you buy for more than 75EUR.
Damn. Wish I had know that. My last order from Mouser was for 73 euro's and I had to pay 20USD shipping.

K and K audio says the IXYS IXTP01N100D is better than the DN2540. Unfortunately. Europeans are NOT allowed to buy that part from the US of A.
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Old 20th May 2011, 01:00 AM   #13
Gluca is offline Gluca  Italy
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Bas ... my last order from mouser is in the mail and I have ordered 100D's too. I have been using them for one year or so and I can say they are more resilient than DN2540 or 10M45S (sometimes I fried them at the start-up) but I cannot tell any audible difference between the two. I have always been using cascoded FETs and in my latest boards I am using TO92 package for the lower FET (DN2540 as usual).

I'll send you 4 when I will be back in Italy. Or better, if any other EU fellow needs help in sourcing 100D we can arrange a group buy and I can bring them with me in EU. Slots are mid June and end of July.

Gianluca
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Old 20th May 2011, 07:51 AM   #14
Bas Horneman is offline Bas Horneman  Netherlands
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Quote:
Or better, if any other EU fellow needs help in sourcing 100D we can arrange a group buy
That would be Great! Thanks Gianluca. I'll set something up. To see if there is any interest.
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Old 20th May 2011, 08:45 AM   #15
Bas Horneman is offline Bas Horneman  Netherlands
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http://www.diyaudio.com/forums/group...ml#post2577942

What is the price of the IXYS part Gianluca?
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Last edited by Bas Horneman; 20th May 2011 at 08:51 AM.
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Old 20th May 2011, 11:34 AM   #16
Bandersnatch is offline Bandersnatch  United States
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hey-Hey!!!,
Stick a 10M- part over a DN2540; the the 10M has more 'gate-drain' voltage and since the DN2540 is hiding under it, it will have less gate capacitance.
cheers,
Douglas
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Old 20th May 2011, 07:59 PM   #17
tmblack is offline tmblack  United Kingdom
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How do you make a CCS using an IRF820 easily?
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Old 20th May 2011, 08:15 PM   #18
Gluca is offline Gluca  Italy
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Quote:
Originally Posted by Bandersnatch View Post
hey-Hey!!!,
Stick a 10M- part over a DN2540; the the 10M has more 'gate-drain' voltage and since the DN2540 is hiding under it, it will have less gate capacitance.
cheers,
Douglas
that's what I do and actually use TO92 packaged DN2540s
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Old 21st May 2011, 10:57 AM   #19
merlin el mago is offline merlin el mago
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I have in mind order to Mouser:

DN2540N3-G Supertex MOSFET Small Signal

DN2540N5-G Supertex MOSFET Power

If anyone in Europe interested to share the shipping & EU customs please let me know?

Greetings
Felipe
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Old 21st May 2011, 01:57 PM   #20
Gluca is offline Gluca  Italy
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Quote:
Originally Posted by merlin el mago View Post
I have in mind order to Mouser:

DN2540N3-G Supertex MOSFET Small Signal

DN2540N5-G Supertex MOSFET Power

If anyone in Europe interested to share the shipping & EU customs please let me know?

Greetings
Felipe
Felipe, you might be interested in this
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