parts subbing and swapping (new and confused)

[scampo77]

i was wondering if i could get advice about part replacement namely things in a TO-220 case

i have 2 out right now from a small fridge and one has a part number SF1004G (rectifier) and the other is a J13007-1 (NPN transistor)

when i google for data sheets or replacement i can find the transistor but it is called a

KSE13007 High Voltage Switch Mode Application
GE13007 NPN SILICON TRIPLE DIFFUSED MESA TYPE TRANSISTOR
PHE13007 Silicon Diffused Power Transistor

and it goes on and on like this for 20 or 30 different options. they are all slightly different part number and all have a different name. my question is are these all the same thing? will any of them work for my application? or do i need the exact replacement part number?

my other question is for substitutions what are the most relevant specs that i can line up with my parts at my house so i dont have to keep ordering stuff from MCM (which is killing me on shipping and handeling) and so i dont have to keep running to the store

i was hoping that if i match up something like emitter/base volts and/or NPN vs PNP i could make an intelligent guess when substituting parts.im just not sure what would be the deciding specs to look at. or do all the specs have to line up exactly the same?

[Scenic]

Re: parts subbing and swapping (new and confused)

http://www.alldatasheet.com/datashee...PJ13007CZ.html

13007 is the key word. as long as the specs match, it shouldn't be a problem putting another 13007 NPN Power Transistor in there..

[scampo77]

Re: parts subbing and swapping (new and confused)

which specs are the most relevant though?

how is this if i line up

collecter base 700v
collecter emitter 400v
emitter base 9v
make sure it is NPN

if i get those 4 things to match should it work? or can i just jam any NPN TO-220 in there (the second option is really what i am hoping for but i think i already know the answer)

[Scenic]

Re: parts subbing and swapping (new and confused)

the above values plus the amperage it can handle (8A continuous, 16A pulsed)

if the new transistor matches or exceeds the collector voltages and the amperage (higher voltage / amps), and the emitter base value is close, it should work..

edit: at least if nothing else is fried and the new one is also NPN and TO-220

[CWB]

Re: parts subbing and swapping (new and confused)

"beta" is important too (hfe) .
not just any old transistor that is correct in polarity (pnp/npn) , CE breakdown voltage , etc , is acceptable ...
the gain has to fall within a given percentage as well .

there is latitude in the specs ... but this depends on the circuit parameters .
subbing parts by other than direct suggested replacement (ie : ecg 123A) found by cross referencing in a book requires some knowledge of how semiconductors work and what is going on with the circuit you are working on .
there is no substitute for knowledge in this area ... a few books and research will go a long way towards helping you become competent in this .

as for what to stock ... it depends on what you are doing or going to do .
for example , you would not want to stock a bunch of 3.3 volt logic level switching fets if you were going to do a lot of audio work .

[severach]

Re: parts subbing and swapping (new and confused)

When I search for J13007-1 I come up with Fairchild FJP13007 FJP13007H1TU TO-220. Is there a logo on that transistor?