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Groups > sci.electronics.components > #6153 > unrolled thread

recuperated transistors : igbt or mosfet ?

Started byalpibucky <alpibucky@mail.be>
First post2017-10-08 16:31 +0200
Last post2017-12-01 20:56 +0000
Articles 5 — 5 participants

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  recuperated transistors : igbt or mosfet ? alpibucky <alpibucky@mail.be> - 2017-10-08 16:31 +0200
    Re: recuperated transistors : igbt or mosfet ? Ralph Mowery <rmowery28146@earthlink.net> - 2017-10-08 13:44 -0400
      Re: recuperated transistors : igbt or mosfet ? John Robertson <spam@flippers.com> - 2017-10-08 12:01 -0700
    Re: recuperated transistors : igbt or mosfet ? legg <legg@nospam.magma.ca> - 2017-10-10 00:14 -0400
      Re: recuperated transistors : igbt or mosfet ? "Ian Field" <gangprobing.alien1@virginmedia.com> - 2017-12-01 20:56 +0000

#6153 — recuperated transistors : igbt or mosfet ?

Fromalpibucky <alpibucky@mail.be>
Date2017-10-08 16:31 +0200
Subjectrecuperated transistors : igbt or mosfet ?
Message-ID<ordcrj$1u3f$1@gioia.aioe.org>
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

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#6154

FromRalph Mowery <rmowery28146@earthlink.net>
Date2017-10-08 13:44 -0400
Message-ID<MPG.344409603c761783989695@news.east.earthlink.net>
In reply to#6153
In article <ordcrj$1u3f$1@gioia.aioe.org>, alpibucky@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

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#6155

FromJohn Robertson <spam@flippers.com>
Date2017-10-08 12:01 -0700
Message-ID<ftqdnbiUT5y560fEnZ2dnUU7-YfNnZ2d@giganews.com>
In reply to#6154
On 2017/10/08 10:44 AM, Ralph Mowery wrote:
> In article <ordcrj$1u3f$1@gioia.aioe.org>, alpibucky@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."

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#6156

Fromlegg <legg@nospam.magma.ca>
Date2017-10-10 00:14 -0400
Message-ID<q4iotc5gs2c7anal8fbmnmqiebuclrdbgd@4ax.com>
In reply to#6153
On Sun, 08 Oct 2017 16:31:14 +0200, alpibucky <alpibucky@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.

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

RL

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#6263

From"Ian Field" <gangprobing.alien1@virginmedia.com>
Date2017-12-01 20:56 +0000
Message-ID<_ljUB.153141$WQ.77694@fx10.am4>
In reply to#6156

"legg" <legg@nospam.magma.ca> wrote in message 
news:q4iotc5gs2c7anal8fbmnmqiebuclrdbgd@4ax.com...
> On Sun, 08 Oct 2017 16:31:14 +0200, alpibucky <alpibucky@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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