MJL 21194G - alternatives?

[MrRonsen]

hello

i freak out about searching and the buying conditions
for that
MJL 21194G .. in europe

all online shops, that are relevant for end customers,
are not suitable, they dont have these mjl 21194G listed..

i can find distributors of the mjl 21194G.. but they are
localized in america or other countries.. so i have to pay 50 bugs on top delivery?
or ZOLL at home in germany!.. no, i can burn my money better..

so what are suitable aquivalents?
here i have a mouser pdf

http://de.mouser.com/catalog/German/102/EUR/475.pdf

MJL vs MJ is the build type ... TO-264 / TO-3/P
MJ21194G datasheet pdf datenblatt - ON Semiconductor - Silicon Power Transistors ::: ALLDATASHEET :::
MJL21194G datasheet pdf datenblatt - ON Semiconductor - 16 AMPERE COMPLEMENTARY SILICON POWER TRANSISTORS 250 VOLTS, 200 WATTS ::: ALLDATASHEET :::

[Dutchswitch]

[MrRonsen]

at mouser you have to >> prepay <<
i would like to pay with paypal...

mouser prices are without tax
the taxe 19% comes on top
AND ZOLL is payed too.. the order comes direct home and not to the ZOLL?
no lightinthebox-surprise? ;o)


alternative
863-MJ15024 MJ15024G TO-3 250 16 15 60 <<<<<<< ??? is easier, better available
see

http://such001.reichelt.de/?SID=14UYuHj38AAAIAAECKFiQe686e61eebd5fd0a852b70aff006ffd7;ACTION=446

1,85 euro (inchange china)
or
3,05 euro(ONS)

incl. taxes

Inchange Semi Co Ltd
A3 Bldg., Li Yuan Development Zone, Wuxi, Jiangsu 214072, China China
attentione: cheap china stuff ?? hmmm...

onsemi.com more trustable ...


ok i have ordered the orig mjl 21194g from mouser..
i had to enter comany field with a dummy to choose later the 30 days billing

[RS_]

MrRonsen,

MJL 21194G...

MJL vs MJ is the build type ... TO-264 / TO-3/P

it will work, it's the same transistor, just in a different case.....

the TO3 is a little harder to work with and mount up is all.......

[Tom C]

2n222 mpsao6 mjl21194 2n3055 all go negative resistance at the junction... others do not. JB tested hundreds of transistors, mjl 21194 is the best. Tom C

[blackchisel97]

Hello fellow experimenters

I was also noticing that the device MJL21194 was obsolete so I looked up the BIGGER PARTS like MJL4281 AND WHAT i FOUND WAS THAT THE MJL4281 was a higher voltage collector but lower ADC bases continuous.

I don't know if the lower base current will pose a problem as compared to the MJL2194.
[ATTACH=CONFIG]2334[/ATTACH]

No likely, but you may have to adjust base resistors. Also, be careful with some 21193/4 "replicas" from Asia. They may pop at much lower than original specs.

Regards
Vtech

[Magnus M.]

Hi mr.Ronsen
I had some problem finding the mjl 21194 transistors.
I finally found them at "http://uk.farnell.com/jsp/search/browse.jsp?N=2031+204244&Ntk=gensearch&Ntt=21194&N tx=mode+matchallpartial"
But they are exspensive.

Magnus M.

[Magnus M.]

Bipolarer Transistor | Bipolare Transistoren | Farnell Deutschland | Results

[BEDINSSGUKRAINE]

Hi MrRonsen!

Well did you tried digikey?

http://www.digikey.de/

[RS_]

Negative resistance at the junction when a transistor turns on, means that there is a longer time where there is NO Forward Current flowing. That means that the coil is seeing a pure potential voltage, with no forward current flow for a longer time, than with a transistor that does not go negative. Remember when the Edison Tech's would throw the switch on a high voltage DC LONG Length Transmission line, it would emit a glow and a stinging sensation before current would start flowing and quench the effect, that Tesla was studying and based his later tech on. It is extending this effect for as long as possible, is what JB is trying to achieve, by using these Part numbers that go negative.... The main stream physics would call this "changing the reaction cross section of the coil" in it's interaction with space time, or the aether. When this happens, because more of the aether was effected / Twisted tighter around the coil, makes the aether rebound faster and more magnified, making the output spike when the transistor turns off, MUCH higher in voltage, it's that voltage potential spike we are trying to collect into a cap, or into the battery direct from the diodes.......

[MrRonsen]

thanks for all that answers..

i ordered at de.mouser.com
the german service support of mouser from munich helped me,
i am glad about inner european transport from paris.. so no ZOLL import tax!
but i had to prepay.. no paypal yet...
i got an "pro forma invoice".. i payed for 25 pieces of mjl21194 ONS, a good price per piece
from a trustful company..

by the way, we got a good thread-talk about negative resistance effect of transistors..

thanks to RS for that insight again

next days i get a (new) oscillocope UTD-2102-CM-R ,
then i will check that behaviour too..
thanks to all so far