Whatever, DN2540 is the most popular, is Gfs 325 mmho for instance. Just because so easy to cascode with minimum parts, its very tempting to design like that in an HV CCS. But I say that the IRFBC with the help of a cascode tailed scheme governing its gate could do better. And yes TO-247 is a very nice big package, and you can drive your metal screw with using only a pad. But this good guy is 220.
IRFBC40 2.60 EUR
IRFP9240 2.13 EUR
Hey, 0.668 Euro is one Dollar and still $1.5? Unfair!😀
IRFBC40 2.60 EUR
IRFP9240 2.13 EUR
Hey, 0.668 Euro is one Dollar and still $1.5? Unfair!😀
It's a mad mad world
mouser probably gives higher prices to the rich folks. 🙄
Dig the price below, in CDN currency, no less 😀
Still, I get them at 20c or so.
I told you, perfect for burning prototypes 
Yeah, the depletion mosfets have their place too but for now, I'll only use them as "high voltage jfets" in ccs.
mouser probably gives higher prices to the rich folks. 🙄
Dig the price below, in CDN currency, no less 😀
Still, I get them at 20c or so.
I told you, perfect for burning prototypes Yeah, the depletion mosfets have their place too but for now, I'll only use them as "high voltage jfets" in ccs.
Attachments
You do well. You know, Jfets are depletion too. Only those DMOS got the oxide.
With such prices you should go to Burning Amp and do the honors each and every year.
With such prices you should go to Burning Amp and do the honors each and every year.
I'd love to go to one of their meetings, but it's too advanced for me. I'll just look at the annual picture show.
It's resembling the ECC88/6DJ8 on higher current, which sounds dull on recommended settings 🙂 What's the news, replacing IRF9240 by IRF941O?
The higher transconductance obtained with one regulator counteracts the effects of having several regulators. Spilling 300mA at 25V gives 7.5W heat, just tolerable in a compact casing I guess.
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IRFP9140 gfs=7.9S 19A 100V 0.2 Ohm TO-247 GDS. Its in the DCB1 BOM actually as alternative.
1,0071 (+20% VAT) for 20 pcs or 0,9064 for 50 pcs my supplier....
I can buy and share if somebody wish
I can buy and share if somebody wish
I got the IRFP9140 🙂
Should I replace both mosfets in the shunt or just the output one ?
Ricardo
(PS: I did not go in my pijamas... )
Both. Lets see if you can get any difference. But don't try for finding it. If there is easily found there is, if not, just a substitute part it will remain.
Wear you fireman suit now.😀 Heavy currents and soldering time.
Wear you fireman suit now.😀 Heavy currents and soldering time.
sorry, where can i find the latest schematic?
and can i subtitute the 2sk170 with 2sk246 or something else?
2sk170 is getting more expensive these day in my country.
thanks
and can i subtitute the 2sk170 with 2sk246 or something else?
2sk170 is getting more expensive these day in my country.
thanks
one 2sk170 MUST be retained.
The other two can be replaced with BF244b or similar CCS connected jFETs
Salas, just a hint: look at 2SK117 datasheet and compare to 2SK170.
I like them veeery much & they are dirty cheap 😛
I like them veeery much & they are dirty cheap 😛
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