grataku said:
From the Zen Variations #8 article:
Even though it's rated at 69 watts, realistically I'd be afraid to operate the package at more than about 10 watts or so.
Lose a lot of arguments to women, do ya?
I don't plan on EMail bombing anyone. I just want to pay up as soon as I can so I can forget about it until the parts arrive.
se
I plan on calling Lovoltech on Monday to get a quote and an idea
of when they can deliver the parts.
As of the 52nd person to sign on the WIKI there looks to be enough
interest to meet the minimum order from members living in the
USA and Canada.
European Union members are at 680 pieces.
The rest of the world around 670 pieces.
To be up front and truthful with my fellow members, i'm not sure
how comfortable i feel taking on this order in full.
One idea i have would be to fill the USA / Canadian orders and
send the European order to one person for distribution there.
But, i can see where this gets complicated, and kind of unfair to
members that don't happen to live in N. America.
I figure better to be up front about this now, before we get to
deep into the process. Thre's been a lot more interest in this than
i thought there was going to be!
I'm still open to all suggestions and ideas.
moe29.
of when they can deliver the parts.
As of the 52nd person to sign on the WIKI there looks to be enough
interest to meet the minimum order from members living in the
USA and Canada.
European Union members are at 680 pieces.
The rest of the world around 670 pieces.
To be up front and truthful with my fellow members, i'm not sure
how comfortable i feel taking on this order in full.
One idea i have would be to fill the USA / Canadian orders and
send the European order to one person for distribution there.
But, i can see where this gets complicated, and kind of unfair to
members that don't happen to live in N. America.
I figure better to be up front about this now, before we get to
deep into the process. Thre's been a lot more interest in this than
i thought there was going to be!
I'm still open to all suggestions and ideas.
moe29.
why don't you ask if lovoltech will ship to two separate addresses?
you are up to about 2300 pcs already. I am sure lovoltech can handle such minor inconvenience, for a 2K order.
you are up to about 2300 pcs already. I am sure lovoltech can handle such minor inconvenience, for a 2K order.
I don't see any reason do do this. International shipping rates of USPS from the States a very friendly for small packages and envelopes. It will not be cheaper.
Unless there are other reasons.
Bartek
Any idea why I can't register to edit Wiki page. Every time I put login and password and click SAVE I get information: "Can't open the page".
Im not sure if its appropriate for me to continue this here, or if I should open a thread.
I have another pair of tansformers I just stuck a dummy load on. With a 2ohm load they delivered 17V to the load, so I should be able to get 50watts a side using 16 devices dissipating 8.5 Watts each.
Input capacitance is about 1200pF, would it be ok to have 16 of these a side?
Am I taking too long and going to miss the bus on this GP?
cheers ab
I have another pair of tansformers I just stuck a dummy load on. With a 2ohm load they delivered 17V to the load, so I should be able to get 50watts a side using 16 devices dissipating 8.5 Watts each.
Input capacitance is about 1200pF, would it be ok to have 16 of these a side?
Am I taking too long and going to miss the bus on this GP?
cheers ab
"Can you ask where is the quantity break? I think some of us can get more if it will help to push the total over the edge."
The first quantity break is at 5K pieces.
AFAIK, these are packaged in 75pc lots. Minimum order is 1050pcs (14 lots), and no price break until 67 (or more) lots are ordered.
If they are shipped in the same rails I received mine in, a full rail will have to be cut down to go in a padded envelope.
My samples vanished into Lab 32 at work. I have received no report as of yet, so please don't ask.
The first quantity break is at 5K pieces.
AFAIK, these are packaged in 75pc lots. Minimum order is 1050pcs (14 lots), and no price break until 67 (or more) lots are ordered.
If they are shipped in the same rails I received mine in, a full rail will have to be cut down to go in a padded envelope.
My samples vanished into Lab 32 at work. I have received no report as of yet, so please don't ask.
Humm, Isn't that the infamous UFO research lab division......? Imagine..... a UFO powered by JFETS.......
Mark
I understand collecting the payment from 52 persons, packing and shipping out to them involves a lot of work.
As a few have pointed out earlier it really does not take much more work to ship Internationally than within USA – one only has to fill out a few words on the customs export declaration green sticker, if shipping abroad out of USA via USPS air letter post. This kind of shipping is also very inexpensive (but is not insured, that is true – for anything to be able to insure a shipment out of USA abroad, the least expensive shipping possible would be via USPS Parcel Post, and more information has to be filled into the postal shipment form).
I am one of those who do not live in USA, but live in Slovenia, which is now within European Union. It looks like those outside USA and Canada will have less chance of getting these devices...
I would like to suggest that for every individual who orders VFETs, the person who would take up the task of distributing them, charges a certain fee for doing this, which would cover his work and expenses (can be per shipment, or per VFET, whatever is preferable). I am certainly willing to pay for this service! I hope this would make the task of shipping to so many people acceptable to the one doing all the work. As for the payment, I feel it would be the easiest if the person distributing the shipments would be able to take Paypal payment. If anyone from within the European Union is willing to take off the burden of the USA distributor, that would be great as well. I would like to point out that present Customs laws within the European Community apply the VAT of the country where semiconductors are imported to (from USA in this case), but no customs duty is charged. In this case the VAT of the country of the person importing the FETs from the USA would apply, but of course the second packaging and shipping cost to another country within EU would apply.
This was just my suggestion in regard to the distribution of these devices, both to the one who would actually purchase them from the manufacturer, or perhaps to someone within the EU, who would not mind taking up the distribution within Europe. Anyone else with other/better ideas in this regard is welcome to comment here.
Andrej Deticek (AD),
Slovenia
As a few have pointed out earlier it really does not take much more work to ship Internationally than within USA – one only has to fill out a few words on the customs export declaration green sticker, if shipping abroad out of USA via USPS air letter post. This kind of shipping is also very inexpensive (but is not insured, that is true – for anything to be able to insure a shipment out of USA abroad, the least expensive shipping possible would be via USPS Parcel Post, and more information has to be filled into the postal shipment form).
I am one of those who do not live in USA, but live in Slovenia, which is now within European Union. It looks like those outside USA and Canada will have less chance of getting these devices...
I would like to suggest that for every individual who orders VFETs, the person who would take up the task of distributing them, charges a certain fee for doing this, which would cover his work and expenses (can be per shipment, or per VFET, whatever is preferable). I am certainly willing to pay for this service! I hope this would make the task of shipping to so many people acceptable to the one doing all the work. As for the payment, I feel it would be the easiest if the person distributing the shipments would be able to take Paypal payment. If anyone from within the European Union is willing to take off the burden of the USA distributor, that would be great as well. I would like to point out that present Customs laws within the European Community apply the VAT of the country where semiconductors are imported to (from USA in this case), but no customs duty is charged. In this case the VAT of the country of the person importing the FETs from the USA would apply, but of course the second packaging and shipping cost to another country within EU would apply.
This was just my suggestion in regard to the distribution of these devices, both to the one who would actually purchase them from the manufacturer, or perhaps to someone within the EU, who would not mind taking up the distribution within Europe. Anyone else with other/better ideas in this regard is welcome to comment here.
Andrej Deticek (AD),
Slovenia
There are 250 JFETs for Holland, and 675 JFETs in total for countries that surround The Netherlands.
Not counting Italy and FSU states, 190 pieces.
If someone in the US is willing to place the order and it is possible to send the European batch to me in a simple way, i am willing to do the distributing here in Europe.
Not counting Italy and FSU states, 190 pieces.
If someone in the US is willing to place the order and it is possible to send the European batch to me in a simple way, i am willing to do the distributing here in Europe.
Thank you Mr. Vermeulen ,
you are a real Plessing for us Europeans
Greetings from Germany
Jürgen
you are a real Plessing for us Europeans
Greetings from Germany
Jürgen
THE WIKI WILL BE CLOSED AS OF MIDNIGHT TONIGHT (SUNDAY) EASTERN STANDARD TIME.
I will then get a quote from Lovoltech and post the particulars of
the group buy at that time. As of now i will be handling the buy
and PayPal will be used. I can accept credit cards - you add 3%
to the total. Final cost will only include fets, materials, and postage,
i'm not looking to make money off this.
Complete instructions and information to come Monday.
If you aren't serious about purchasing, remove your name from WIKI.
Final information will probably be included in a new thread in the
Group Buy forum. I will be posting a link from this thread.
I will then get a quote from Lovoltech and post the particulars of
the group buy at that time. As of now i will be handling the buy
and PayPal will be used. I can accept credit cards - you add 3%
to the total. Final cost will only include fets, materials, and postage,
i'm not looking to make money off this.
Complete instructions and information to come Monday.
If you aren't serious about purchasing, remove your name from WIKI.
Final information will probably be included in a new thread in the
Group Buy forum. I will be posting a link from this thread.
I'd consider soldering the IPAKs to a larger copper tab or two-screw plate and then mounting that to a sink.
First trouble with the package is the tab area is too small to afford the thermal resistance of any plan other than a solder bond for full power operation.
Maybe the DIY crowd could pool to buy some dice put it in T0-220.
First trouble with the package is the tab area is too small to afford the thermal resistance of any plan other than a solder bond for full power operation.
Maybe the DIY crowd could pool to buy some dice put it in T0-220.
grataku said:
moe29 said:
Materials are free. Just use USPS domestic and global priority mail. In fact, the flat rate envelopes should be just fine.
$3.85 for domestic postage, $4.00 to Canada, and $5 for everywhere else.
The largest order is for 100 pieces and I think they'd fit in the small Global Priority Flat Rate envelope (6 x 10 inches). If not, the large envelope is $7.
You can get the envelopes free at your local post office or order them online at usps.com.
You'll also need the customs forms for Canadian and overseas orders. You need to use PS Form 2976, January 2004. Again, you can get these free at your local post office or order them online.
The only bitch about the Canadian and overseas orders is that you have to write out the sender and addressee addresses twice. Once on the envelope and again on the customs form (the detachable part that the post office keeps on file for 30 days).
se
I think it's important to mark package as a gift with no value on it ("samples" for example). Otherwise some countries might add some duties and taxes.
Yes, very important. If you have to add a value it should not exeed a certain amount - it is €20 here in Austria.
" I'd consider soldering the IPAKs to a larger copper tab or two-screw plate and then mounting that to a sink."
"First trouble with the package is the tab area is too small to afford the thermal resistance of any plan other than a solder bond for full power operation."
I agree. The first thing I did was send them out to have them re-flow soldered to an MT-200 sized heat spreader.
I discussed this issue with a Lovoltec rep. He said the re-flow soldering to a heat spreader was a good idea, but did not seem interested in having Lovoltec do it.
"Maybe the DIY crowd could pool to buy some dice put it in T0-220."
A factory (in this case I was talking to International Rectifier) generally wants about a $1M order to tool up for this. I have talked to secondary re-packagers about similar deals and found the costs to run about $20K for the first 1K lot, and then about a $1 per piece quote above that. Motorola was willing to attach a heat spreader to one of their existing products for about $0.70 in small lots (which probably means 10K to them) with no up-front fee.
"First trouble with the package is the tab area is too small to afford the thermal resistance of any plan other than a solder bond for full power operation."
I agree. The first thing I did was send them out to have them re-flow soldered to an MT-200 sized heat spreader.
I discussed this issue with a Lovoltec rep. He said the re-flow soldering to a heat spreader was a good idea, but did not seem interested in having Lovoltec do it.
"Maybe the DIY crowd could pool to buy some dice put it in T0-220."
A factory (in this case I was talking to International Rectifier) generally wants about a $1M order to tool up for this. I have talked to secondary re-packagers about similar deals and found the costs to run about $20K for the first 1K lot, and then about a $1 per piece quote above that. Motorola was willing to attach a heat spreader to one of their existing products for about $0.70 in small lots (which probably means 10K to them) with no up-front fee.
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