On Sat, 01 Jan 2011 07:17:16 -0800, I wrote:><snip> >... assuming it was a TO-220/TO-247 style package. > >Did the OP say?Never mind. I just looked at the posted image. Jon
Power NPN transistor N344AB
Started by ●January 1, 2011
Reply by ●January 1, 20112011-01-01
Reply by ●January 1, 20112011-01-01
Is the original a FET? It looks like 4 of the suggested replacements are FET's. H80NF55-08 replaced with a HUF75337P3 HUF75337P3 75A/ 55V/ 0.014 Ohm/ N-Channel UltraFET Power MOSFETs STH80NF55 has TO-218 case http://www.ges.cz/-sth80nf55-08-ges04913482.html?lang=3Den STH80NF55-08 MOS-N-FET for klimatronic regulators, rds=3D0,008Ohm. TO247 G D S D 16p IRFP064N TO-247 case http://www.irf.com/product-info/datasheets/data/irfp064n.pdf Check out other comments at the links for other details that might be important. http://www.peugeotcentral.co.uk/ftopic-7671.html mrjolly Peugeot Owned: 406 Posted: Mon Aug 03, 2009 2:22 am Found the problem was the fan resistor, I also found a previous entry which i have added to, had some helpful info :- The blower fan resistor unit, the one witht the aluminium fins on it is located in the ducting to the right of the fan under the glove box. When i finally got this unit out I was surprised at the large amount of electronics in it! There is one large 'transistor' clipped to the aluminium heat sink and it looked very tired, it was also oozing white goo!!. Electronic things that get hot often fail. After some difficulty in de-soldering it, I bought a simimilar transistor from Maplin Electronics for =A31.92 adjusted the pins and soldered it back into the board after cleaning up the heat sink and now everything works ( no driving in a force ten gale !!!). For interest, the transistor that was faulty was a H80NF55-08. I replaced it with a HUF75337P3 [ FET ] ------------------------------------------------------------------ that has similar characteristics. Many thanks for your help. http://www.answerbag.com/q_view/1237968 Does it not work at all? If not locate where the motor is and with key on and fan on high..tap on it-if the blower motor starts its the motor itself thats defective-if it only works on high speed its most likely a bad resistor. Depending on age of it, this can be a common problem.
Reply by ●January 1, 20112011-01-01
OP slampen: Have you tested the blower motor itself? Peugeot 406 chit chat says that it's common for the blower motor itself to go out, and a bad one commonly revives temporarily when the motor is tapped or whacked. Have you tested the blower motor itself?
Reply by ●January 1, 20112011-01-01
On Sat, 1 Jan 2011 07:36:19 -0800 (PST), Greegor <greegor47@gmail.com> wrote:>OP slampen: Have you tested the blower motor itself?Do you even READ a thread EVER... at all? You stupid fuck? He showed us the failed part diagnostic, which proved the proper function of the "blower motor itself". Your lack of logic matches your incapacity to make "assessments" in any other realm as well. A root cause, in fact.>Peugeot 406 chit chat says that it's common for the >blower motor itself to go out, and a bad one commonly >revives temporarily when the motor is tapped or whacked.You still need to receive yours, obviously. *THWACK!* Direct Hit firing solution resolved! Oh, darn! Usenet has no "Fire for effect" mode, or you would be vaporized by the laser from the "Real Genius" film! Or at least whopped upside da haed with a baseball bat or ancient shillelagh. The darndest thing though... if device number two is used, the urge to continue beyond the first whoppin' is irresistible! Bwuahahahahahaha!>Have you tested the blower motor itself?You're a brainless wonder. It would be fun to open up that skull cavity and prove it to be true. Ever see the first episode of "Lexx"? Bwuahahahahahahahahahahahahahahahahahahahahahaa!!!
Reply by ●January 1, 20112011-01-01
On Sat, 1 Jan 2011 07:36:19 -0800 (PST), Greegor <greegor47@gmail.com> wrote:>OP slampen: Have you tested the blower motor itself? >Peugeot 406 chit chat says that it's common for the >blower motor itself to go out, and a bad one commonly >revives temporarily when the motor is tapped or whacked. > >Have you tested the blower motor itself?The OP did write, "When I short-circuit collector and emitter the blower runs at full speed." Which, given Jamie's earlier comments and your additional post, looks like an N-FET and not an NPN, where the OP was shoring D to S, not C to E. Jon
Reply by ●January 1, 20112011-01-01
On Sat, 01 Jan 2011 11:33:31 +0100, slampen <sla1244@gmail.com> 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 :-) > >GeirI hadn't even looked at your image, but Jamie had the wisdom to do that. I think Jamie has nailed it. If so, they are cheap and broadly in stock. This being the cheapest I could find quickly: http://www.futureelectronics.com/en/Technologies/Product.aspx?ProductID=HUF75344G3FAIRCHILD9051079 To be absolutely sure before trying anything else, if you are still worried, you may need to take a measurement at pin 1 and see what you observe regarding the driver when the system attempts to turn the fan on and off and post the information. Or else observe and comment what you see connected to pin 1. But it looks as though what you have is more likely an N-MOSFET. Particularly considering the discussion that Greegor uncovered. Jon
Reply by ●January 1, 20112011-01-01
Greegor wrote:> On Jan 1, 4:33 am, 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. 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 > > I couldn't find the A or AB version of it. > > Some indication comes from an earlier version of it. > Instead of an NPN power transistor it looks > like a PNP low power VHF switching transistor. > Did they change it a LOT when they went to the AB designation? > > http://engisys.info/transistor.php?transistor=3213 > > Name: 2N344 > > Material of 2N344 transistor: Ge > Structure of 2N344 transistor: pnp > Maximum collector power dissipation of 2N344 transistor (Pc): 20mW > Maximum collector-base voltage of 2N344 transistor (Ucb): 5V > Maximum collector-emitter voltage of 2N344 transistor (Uce): 5V > Maximum emitter-base voltage of 2N344 transistor (Ueb): - > Maximum collector current of 2N344 transistor (Ic max): 5mA > Maximum junction temperature of 2N344 transistor (Tj): 85�C > Transition frequency of 2N344 transistor (ft): 20MHz > Collector capacitance of 2N344 transistor (Cc), Pf: 12 > Forward current transfer ratio of 2N344 transistor (hFE), min/max: > 22T > Manufacturer of 2N344 transistor: CSR > Case of 2N344 transistor: TO23 > Application of 2N344 transistor: VHF, Low PowerClearly that particular transistor was not used! If indeed a NPN was used, perhaps a 2N3055 might be useful; if a PNP the 2N3054 is the compliment (if i remember right). As far as the package goes, one would think almost any power transistor in same/similar package would do...if of right flavor.
Reply by ●January 2, 20112011-01-02
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 :-) > > GeirThat 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? -- http://www.wescottdesign.com
Reply by ●January 2, 20112011-01-02
>> >> 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? > > -- > http://www.wescottdesign.comIf it's just a simple pwm, then NPN or N fet should work..... so long as there's a base resistor for NPN mode.
Reply by ●January 2, 20112011-01-02
On Jan 2, 2:59=A0am, "TTman" <pcw1....@ntlworld.com> wrote:> >> 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. =A0It'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? > > > -- > >http://www.wescottdesign.com > > If it's just a simple pwm, then NPN or N fet should =A0work..... so long =as> there's a base resistor for NPN mode.How do these things provide a low or medium speed?
