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recuperated transistors : igbt or mosfet ?

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alpibucky
Guest

Sun Oct 08, 2017 4:31 pm   



Hi,

I recuperated a lot of semiconductors but I now face the identification
of these item, principally mosfet and igbt.
How can I identify the one from the other with e.g. a dmm ?

Kind regards,

alpibucky

Ralph Mowery
Guest

Sun Oct 08, 2017 7:44 pm   



In article <ordcrj$1u3f$1_at_gioia.aioe.org>, alpibucky_at_mail.be says...
Quote:

Hi,

I recuperated a lot of semiconductors but I now face the identification
of these item, principally mosfet and igbt.
How can I identify the one from the other with e.g. a dmm ?

Kind regards,

alpibucky


You might look into the component testers comming from China. They can
be bought from about $ 9 to $ 20.

http://www.ebay.com/itm/LCR-T4-ESR-Meter-Transistor-Tester-Diode-Triode-
Capacitance-SCR-Inductance-JT1/302456912009?_trkparms=aid%3D555018%
26algo%3DPL.SIM%26ao%3D1%26asc%3D41376%26meid%
3D91c9150281a04f95a67e6fac10b92550%26pid%3D100010%26rk%3D5%26rkt%3D6%
26sd%3D322647109106&_trksid=p2047675.c100010.m2109

John Robertson
Guest

Sun Oct 08, 2017 9:01 pm   



On 2017/10/08 10:44 AM, Ralph Mowery wrote:
Quote:
In article <ordcrj$1u3f$1_at_gioia.aioe.org>, alpibucky_at_mail.be says...

Hi,

I recuperated a lot of semiconductors but I now face the identification
of these item, principally mosfet and igbt.
How can I identify the one from the other with e.g. a dmm ?

Kind regards,

alpibucky

You might look into the component testers comming from China. They can
be bought from about $ 9 to $ 20.

http://www.ebay.com/itm/LCR-T4-ESR-Meter-Transistor-Tester-Diode-Triode-
Capacitance-SCR-Inductance-JT1/302456912009?_trkparms=aid%3D555018%
26algo%3DPL.SIM%26ao%3D1%26asc%3D41376%26meid%
3D91c9150281a04f95a67e6fac10b92550%26pid%3D100010%26rk%3D5%26rkt%3D6%
26sd%3D322647109106&_trksid=p2047675.c100010.m2109



The design was done in Europe, if I am not mistaken, and shared online -
and the Chinese are simply flooding the market with it with the help of
their government making shipping worldwide essentially free (heavily
subsidized) to weaken foreign suppliers/designers like the good folks in
the US and Europe.

And, yes, I bought three for my staff, they do work well. Sigh,
participating in the drive to the bottom...

John :-#(#

--
(Please post followups or tech inquiries to the USENET newsgroup)
John's Jukes Ltd.
MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3
(604)872-5757 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."

legg
Guest

Tue Oct 10, 2017 6:14 am   



On Sun, 08 Oct 2017 16:31:14 +0200, alpibucky <alpibucky_at_mail.be>
wrote:

Quote:
Hi,

I recuperated a lot of semiconductors but I now face the identification
of these item, principally mosfet and igbt.
How can I identify the one from the other with e.g. a dmm ?

Kind regards,

alpibucky


For a first pass, Mosfets have a parasitic internal diode from drain
to source. IGBTs don't, unless an extra part is added internally.

You really should decipher the part markings, for real information on
the part, before redeploying it.

RL

Ian Field
Guest

Fri Dec 01, 2017 10:56 pm   



"legg" <legg_at_nospam.magma.ca> wrote in message
news:q4iotc5gs2c7anal8fbmnmqiebuclrdbgd_at_4ax.com...
Quote:
On Sun, 08 Oct 2017 16:31:14 +0200, alpibucky <alpibucky_at_mail.be
wrote:

Hi,

I recuperated a lot of semiconductors but I now face the identification
of these item, principally mosfet and igbt.
How can I identify the one from the other with e.g. a dmm ?

Kind regards,

alpibucky

For a first pass, Mosfets have a parasitic internal diode from drain
to source. IGBTs don't, unless an extra part is added internally.


The basic IGBT is an n-channel MOSFET with a PNP emitter follower hanging
from the drain, so that test should clear things up.

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