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Old 13th September 2006, 11:42 PM   #1
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Default Lovoltech name change

Lovoltech now goes by the name Qspeed, I am reliably
informed, and have just introduced a high current, high
voltage high speed soft recovery rectifier.

www.qspeed.com
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Old 14th September 2006, 01:49 AM   #2
flg is offline flg  United States
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So, I wrote the "Mike@qspeed" Does that mean they will answer e-mails now??? I've called Lovoltech, they don't answer the phone??? Besides the infamous uses in ZV9, I "currently" work in SMPs applications and they don't seem to need to answer my questions or live up to their claim of providing Pspice models on request from that angle either? It apears the general JFET Pspice model will not follow the low voltage, low current "triode" characteristics of their devices
Nelson, is it possible your reliable source could help us modelers out???
I don't even have a kitchen table now
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Old 14th September 2006, 01:49 AM   #3
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Due to NP's past large order of jfets and a back-order double his first order, he was top secretly informed of the name change.

Sorry, Grey but your order was not large enough.
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Old 14th September 2006, 03:54 PM   #4
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Default Re: Lovoltech name change

Quote:
Originally posted by Nelson Pass


Qspeed

Qspeed . . . good name . . .

Didn't you talk to them to make the JFET's physical size bigger?
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Old 14th September 2006, 05:11 PM   #5
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My projections for the probable market for power JFETs did
not make a dent in their business model.
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Old 14th September 2006, 08:09 PM   #6
Blues is offline Blues  United States
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Quote:
Originally posted by Nelson Pass
My projections for the probable market for power JFETs did
not make a dent in their business model.
It did not make a dent...it was TOTALED!

I guess your competitors are still trying to figure out where the heck is the Jfet sweet spot this Pass guy is talking about. Once they do, it's already Jfet famine.
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Old 15th September 2006, 02:55 AM   #7
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Well, I'm happy to say, Mike @qspeed responded very quickly Shattering all my claims in the above post Thank you Nelson!
I don't have to much time till next week but, for you Pspice modelers, I would imagine I am free to diseminate them in good faith to anyone who has also been fiddling with a ZV9 in Pspice. Or maybe you would like to extract their parameters for your own Simm App Of coarse I'm not sure, I havent looked yet, their model may not be usefull for that below 5Volt, below5 amp region either Just e-mail me and I'll forward them...
As far as dents, I tried to propagate the new parts throuout our SMPs org and only 1 engineer even responded Later we had a low voltage reg project we had great difficulty to figure out I went home and modeled the LU1014D into a prototype circuit and it worked just fine. However, for bis reasons, it really was not an appropriate solution in that instance... Oh well, I still have all my parts at least...
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Old 15th September 2006, 07:10 PM   #8
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Default Re: Lovoltech name change

Quote:
Originally posted by Nelson Pass
Lovoltech now goes by the name Qspeed, I am reliably
informed, and have just introduced a high current, high
voltage high speed soft recovery rectifier.
Have you had a look at the "new" SemeLab C3 ultra soft recovery diodes ?

Quote:
Originally posted by Nelson Pass
My projections for the probable market for power JFETs did
not make a dent in their business model.
This is no surprise. LIS indicated that they would need to sell about USD 500K worth of devices per year in order to justify producing power JFETs, though that was a "rough estimate" for a complementary pair. Smaller foundries can make single runs for less, but expect insane lead times.

Perhaps it's time to "melt your own sand"

Anyway, on a more serious note, you could try asking them for unpackaged chips in a carrier, or even an unprocessed wafer. There are several companies out there that will take care of testing, bin sorting and packaging for you, even in smallish quantities.

SemeLab, for instance, offers packaging services. This device would probably be pretty nice in a SOT227, TO3 or SmartPack capsule. Especially a dual, with the consequent improvement in thermal matching.
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Old 15th September 2006, 08:28 PM   #9
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I am of the belief that Qspeed needs a lot more than $1M/yr
just to change the package, much less make a custom chip.
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Old 15th September 2006, 11:56 PM   #10
suiraMB is offline suiraMB  Norway
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Quote:
Originally posted by Nelson Pass
I am of the belief that Qspeed needs a lot more than $1M/yr
just to change the package, much less make a custom chip.
I was not suggesting that they make a custom chip.

Almost all manufacturers provide the chip inside their packages in unpackaged form, typically in a unit called a chip carrier (1000+ chips). This is so that companies can assemble them in multi-chip arrays, or attach them directly to circuit boards, etc. Usually, these chips cost less than the packaged equivalents.

Such a chip carrier can be shipped to a company that does packaging, in order to package it differently from what the company itself does.

Since the company itself is catering to a certain market, it will cost them a lot, for little gain, to do any changes, such as using a different package. For a company that does packaging for a living, however, that is where their money comes from: they package chips for many different clients.

Shipping an order in chip carrier form is probably something they already do, and something that shouldn't cost them anything.
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