Den 02.01.2011 14:49, skrev Greegor:> How do these things provide a low or medium speed? >I thought that the whole thing is PWM regulated. Must be above 20kHz though becaus I have never heard an audible tone like with trains and other heavy electric motors... Geir
Power NPN transistor N344AB
Started by ●January 1, 2011
Reply by ●January 2, 20112011-01-02
Reply by ●January 2, 20112011-01-02
Tim Wescott wrote:> On Sat, 01 Jan 2011 11:33:31 +0100, slampen wrote: > > >>Hi, >>My Peugeot 406 heater blower control module ceased to work the other >>day, and its power transistor is open. Must be an NPN since it is >>supposed to PWM the blower motor to earth (-12V). >> >>When searching N344* I find a lot of references to 2N344n.. (2N3440, >>2N3442... etc) but not this the exact version. >> >>I've uploaded an image of the 'fat' case here: >> >>http://kuntigi.net/download/N344AB-1.jpg >> >>Any suggestions to an equivalent for this..? >> >>Thanks and Happy New Year to all :-) >> >>Geir > > > That leading '2', or lack thereof, makes a lot of difference. It's > probably a house number for whoever made the controller in the first > place. > > You could try putting in a regular power NPN and hope that it works. > What makes you think it's not an N-channel FET? >It's the second number on the package.. which is a power fet and fits the app just fine.. I've seen inverted numbers like this many times on packages. ' Jamie
Reply by ●January 2, 20112011-01-02
On Sun, 2 Jan 2011 05:49:59 -0800 (PST), Greegor <greegor47@gmail.com> wrote:>How do these things provide a low or medium speed?You asking that question makes it obvious that you should not even be anywhere near the electronics industry.
Reply by ●January 2, 20112011-01-02
On Jan 1, 5:33=A0am, slampen <sla1...@gmail.com> wrote:> Hi, > My Peugeot 406 heater blower control module ceased to work the other > day, and its power transistor is open. =A0Must be an NPN since it is > supposed to PWM the blower motor to earth (-12V). > > When searching N344* I find a lot of references to 2N344n.. (2N3440, > 2N3442... etc) but not this the exact version. > > I've uploaded an image of the 'fat' case here: > > http://kuntigi.net/download/N344AB-1.jpg > > Any suggestions to an equivalent for this..? > > Thanks and Happy New Year to all :-) > > GeirI'm pretty sure this is a variant package (TO-126 like) of the Fairchild HUF75344, a low R-on (0.008 ohm) 75A 55V N channel MOSFET. Any similarly low-Ron MOSFET would probably sub OK. Automotive manufacturers picked up big time on MOSFET's as replacements for relays. Tim.
Reply by ●January 2, 20112011-01-02
On Sun, 02 Jan 2011 09:53:13 -0500, Jamie wrote:> Tim Wescott wrote: > >> On Sat, 01 Jan 2011 11:33:31 +0100, slampen wrote: >> >> >>>Hi, >>>My Peugeot 406 heater blower control module ceased to work the other >>>day, and its power transistor is open. Must be an NPN since it is >>>supposed to PWM the blower motor to earth (-12V). >>> >>>When searching N344* I find a lot of references to 2N344n.. (2N3440, >>>2N3442... etc) but not this the exact version. >>> >>>I've uploaded an image of the 'fat' case here: >>> >>>http://kuntigi.net/download/N344AB-1.jpg >>> >>>Any suggestions to an equivalent for this..? >>> >>>Thanks and Happy New Year to all :-) >>> >>>Geir >> >> >> That leading '2', or lack thereof, makes a lot of difference. It's >> probably a house number for whoever made the controller in the first >> place. >> >> You could try putting in a regular power NPN and hope that it works. >> What makes you think it's not an N-channel FET? >> > It's the second number on the package.. which is a power fet and fits > the app just fine.. > > I've seen inverted numbers like this many times on packages. > 'I just looked it up on Digi-Key. It sure looks like it has the right specifications. -- http://www.wescottdesign.com
Reply by ●January 2, 20112011-01-02
G > How do these things provide a low or medium speed? Archie > You asking that question makes it obvious Archie > that you should not even be anywhere Archie > near the electronics industry. Nice try, Archie! Answer the question!
Reply by ●January 2, 20112011-01-02
Jamie wrote:> It's the second number on the package.. which > is a power fet and fits the app just fine..Yeah, that's it! Thanks Jamie! On Jan 2, 2:02=A0pm, Tim Wescott <t...@seemywebsite.com> wrote:> I just looked it up on Digi-Key. =A0It sure looks like it has the right > specifications.http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=3DHUF75344= G3-ND In stock for $2.96 each! Thanks Mr. Wescott! You can't get much better than that, slampen.
Reply by ●January 2, 20112011-01-02
http://kuntigi.net/download/N344AB-1.jpg Jamie wrote:> It's the second number on the package.. which > is a power fet and fits the app just fine..Yeah, that's it! Thanks Jamie! Tim Shoppa> I'm pretty sure this is a variant package (TO-126 like) of the > Fairchild HUF75344, a low R-on (0.008 ohm) 75A 55V N channel MOSFET. > Any similarly low-Ron MOSFET would probably sub OK. > > Automotive manufacturers picked up big time on MOSFET's as > replacements for relays.Sounds right, thanks Mr. Shoppa! On Jan 2, 2:02 pm, Tim Wescott <t...@seemywebsite.com> wrote:> I just looked it up on Digi-Key. It sure looks like it has the right > specifications.http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=HUF75344G3-ND HUF75344G3-ND in stock for $2.96 each! Thanks Mr. Wescott! You can't get much better than that, slampen.
Reply by ●January 2, 20112011-01-02
Den 02.01.2011 22:15, skrev Greegor:> http://kuntigi.net/download/N344AB-1.jpg > > Jamie wrote: >> It's the second number on the package.. which >> is a power fet and fits the app just fine.. > > Yeah, that's it! Thanks Jamie! > > Tim Shoppa >> I'm pretty sure this is a variant package (TO-126 like) of the >> Fairchild HUF75344, a low R-on (0.008 ohm) 75A 55V N channel MOSFET. >> Any similarly low-Ron MOSFET would probably sub OK. >> >> Automotive manufacturers picked up big time on MOSFET's as >> replacements for relays. > > Sounds right, thanks Mr. Shoppa! > > On Jan 2, 2:02 pm, Tim Wescott<t...@seemywebsite.com> wrote: >> I just looked it up on Digi-Key. It sure looks like it has the right >> specifications. > > http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=HUF75344G3-ND > > HUF75344G3-ND in stock for $2.96 each! Thanks Mr. Wescott! > > You can't get much better than that, slampen.Yeah, thanks a lot to everyone!! Geir
Reply by ●January 2, 20112011-01-02
On Sun, 2 Jan 2011 13:03:34 -0800 (PST), Greegor <greegor47@gmail.com> wrote:><snip> >In stock for $2.96 each! Thanks Mr. Wescott! > >You can't get much better than that, slampen.I earlier posted a link to Future, where it is a dollar less I think. No accounting for shipping differences, though. And Digikey used to have a $25 minimum to skip another extra charge. Might still be policy. Jon
