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75332P MOSFET drain connected to which battery terminal?

Started by John Doe January 7, 2012
I have a 75332P MOSFET on a cordless drill controller heatsink. I
guess it's part of a pulse width modulator. The drain (flange)
connects directly to one of the battery terminals. 

Does the MOSFET drain go directly to the battery minus/ground
terminal? Or does it go to the battery plus terminal?

Thanks. 





-- 
My application... I'm desperately trying to develop a better inline 
skating push stick, as described on my picture page 
<http://www.flickr.com/photos/27532210@N04/5650406873/>
"John Doe"

>I have a 75332P MOSFET on a cordless drill controller heatsink. I > guess it's part of a pulse width modulator. The drain (flange) > connects directly to one of the battery terminals. > > Does the MOSFET drain go directly to the battery minus/ground > terminal? Or does it go to the battery plus terminal? >
** Not enough info. Surely you can trace the wiring. .... Phil
Tab is always drain, but which polarity depends on N or P channel.

Tim

-- 
Deep Friar: a very philosophical monk.
Website: http://webpages.charter.net/dawill/tmoranwms

"John Doe" <jdoe@usenetlove.invalid> wrote in message 
news:4f08e07a$0$3258$c3e8da3$9b4ff22a@news.astraweb.com...
>I have a 75332P MOSFET on a cordless drill controller heatsink. I > guess it's part of a pulse width modulator. The drain (flange) > connects directly to one of the battery terminals. > > Does the MOSFET drain go directly to the battery minus/ground > terminal? Or does it go to the battery plus terminal? > > Thanks. > > > > > > -- > My application... I'm desperately trying to develop a better inline > skating push stick, as described on my picture page > <http://www.flickr.com/photos/27532210@N04/5650406873/>
"Tim Williams"


> Tab is always drain, but which polarity depends on N or P channel.
** Some power MOSFETS have the source on the tab. In TO3, TO3P, TO220 etc ... Phil
On 2012-01-08, John Doe <jdoe@usenetlove.invalid> wrote:
> I have a 75332P MOSFET on a cordless drill controller heatsink. I > guess it's part of a pulse width modulator. The drain (flange) > connects directly to one of the battery terminals. > > Does the MOSFET drain go directly to the battery minus/ground > terminal? Or does it go to the battery plus terminal?
HUFA75332P3 is a 60A 55V N-channel MOSFET. N-channnel mosfets are used as switches with the drain more positive than the source terminal. So unless that mosfet is part of an electronic brake, or reverse polarity blocking system that terminal goes to the battery positive. http://html.alldatasheet.com/html-pdf/52898/FAIRCHILD/HUFA75332P3/410/1/HUFA75332P3.html -- &#9858;&#9859; 100% natural --- Posted via news://freenews.netfront.net/ - Complaints to news@netfront.net ---
"Jasen Betts" <jasen@xnet.co.nz>


** Fuck of you sheep shagging cunt .

> > N-channnel mosfets are used as switches with the drain more positive than > the source terminal. > > So unless that mosfet is part of an electronic brake, or reverse > polarity blocking system that terminal goes to the battery positive.
** 10,000% WRONG. You fucking, tenth witted, autistic POS. ... Phil
Only RF FETs.  Rarely encountered in those packages because the lead 
inductance really sucks.  They occupy that small margin between audio 
frequency and switching FETs and proper RF FETs with microstrip leads, and 
usually stud mount heatsinking.

Tim

-- 
Deep Friar: a very philosophical monk.
Website: http://webpages.charter.net/dawill/tmoranwms

"Phil Allison" <phil_a@tpg.com.au> wrote in message 
news:9msu41Fu0sU1@mid.individual.net...
> > "Tim Williams" > > >> Tab is always drain, but which polarity depends on N or P channel. > > > ** Some power MOSFETS have the source on the tab. > > In TO3, TO3P, TO220 etc > > > > ... Phil >
"Tim Williams"

** FFS do NOT  top post !!!!!!

> >>> Tab is always drain, but which polarity depends on N or P channel. >> >> >> ** Some power MOSFETS have the source on the tab. >> >> In TO3, TO3P, TO220 etc
> Only RF FETs. Rarely encountered in those packages because the lead > inductance really sucks. They occupy that small margin between audio > frequency and switching FETs and proper RF FETs with microstrip leads, and > usually stud mount heatsinking.
** Lateral power mosfets, made by Hitachi, Renesas and Magnatec / Semelab / Exicon all have the case or tab as the drain. Egs 2SK176, BUZ900, BUZ900P, 2SK226 .... .... Phil
"Phil Allison"

** Corection:

Lateral power mosfets, made by Hitachi, Renesas and Magnatec / Semelab /
 Exicon all have the case or tab as the SOURCE.

  Egs   2SK176, BUZ900, BUZ900P, 2SK226 ....


... Phil 


"Phil Allison" <phil_a tpg.com.au> wrote:

> "Tim Williams" > > ** FFS do NOT top post !!!!!!
Says the pillar of UseNet... --
> >> >>>> Tab is always drain, but which polarity depends on N or P channel. >>> >>> >>> ** Some power MOSFETS have the source on the tab. >>> >>> In TO3, TO3P, TO220 etc > >> Only RF FETs. Rarely encountered in those packages because the lead >> inductance really sucks. They occupy that small margin between audio >> frequency and switching FETs and proper RF FETs with microstrip leads, and >> usually stud mount heatsinking. > > > ** Lateral power mosfets, made by Hitachi, Renesas and Magnatec / Semelab / > Exicon all have the case or tab as the drain. > > Egs 2SK176, BUZ900, BUZ900P, 2SK226 .... > > > > .... Phil > > > > > > > > > > > >
> Path: news.astraweb.com!border2.newsrouter.astraweb.com!nntp.club.cc.cmu.edu!feeder.erje.net!news2.arglkargh.de!news.albasani.net!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail > From: "Phil Allison" <phil_a tpg.com.au> > Newsgroups: sci.electronics.design,sci.electronics.basics > Subject: Re: 75332P MOSFET drain connected to which battery terminal? > Date: Mon, 9 Jan 2012 09:54:40 +1100 > Lines: 37 > Message-ID: <9mul5nFfohU1 mid.individual.net> > References: <4f08e07a$0$3258$c3e8da3$9b4ff22a news.astraweb.com> <jeatga$8rr$1 dont-email.me> <9msu41Fu0sU1 mid.individual.net> <jecr4a$hoc$1 dont-email.me> > X-Trace: individual.net CCDPwW9V6MQsYS+UWE3Vvg+AudlqlVpONmx2OGRLYvyNGh858I > Cancel-Lock: sha1:mTr13jfkMABKYNSWPVG+Jkxr6mk= > X-Priority: 3 > X-MSMail-Priority: Normal > X-Newsreader: Microsoft Outlook Express 6.00.2900.2180 > X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3350 > X-RFC2646: Format=Flowed; Response > >