I need help from someone who knows circuit components.

[Outlaws]

I am building a clean boost for my guitar and I need to put a transistor in my circuit. So anyways, my favorite non-recording website BBS is down at the most inoportune time.

Here is the layout of the transistor.
http://www.nteinc.com/specs/400to499/pdf/nte458.pdf

I need to know which is the D, G, and S

As you can see, it looks like its the one on the left while looking at it from the top view, but notice the shape of the tranny, it seems reasonable that diagram designers are morons and didn't make everything realative to one another. -because if you look at the picture, imo, the head-on view would be the flat part. But that would mean the that D is on the right hand side of the top-down view.

...or is the top-down view actually a bottom-up view?

ANyways if someone can help I know someone here is into this stuff.

 

[Herm]

Since they are showing the trans from the bottom with the leads showing I would say that D is still left as it is on the top diagram.
I put a FM transmitter together that used alot of these but they always showed how it went in on the circuit board.

 

[Beck]

I am building a clean boost for my guitar and I need to put a transistor in my circuit. So anyways, my favorite non-recording website BBS is down at the most inoportune time.

Here is the layout of the transistor.
http://www.nteinc.com/specs/400to499/pdf/nte458.pdf

I need to know which is the D, G, and S

As you can see, it looks like its the one on the left while looking at it from the top view, but notice the shape of the tranny, it seems reasonable that diagram designers are morons and didn't make everything realative to one another. -because if you look at the picture, imo, the head-on view would be the flat part. But that would mean the that D is on the right hand side of the top-down view.

...or is the top-down view actually a bottom-up view?

ANyways if someone can help I know someone here is into this stuff.

In NTE documentation you are looking at the flat side of the component in the top picture. The round side is the back. The D (drain), G (gate), and S (source) pins are not lined up for the bottom picture, just the top.

They could do a better job in their spec sheets to make pin designation more clear.

-Tim

 

[Outlaws]

In NTE documentation you are looking at the flat side of the component in the top picture. The round side is the back. The D (drain), G (gate), and S (source) pins are not lined up for the bottom picture, just the top.

They could do a better job in their spec sheets to make pin designation more clear.

-Tim

Thanks.
I found out the bottom pic is the bottom of the tranny though.

 

[Outlaws]

Since they are showing the trans from the bottom with the leads showing I would say that D is still left as it is on the top diagram.
I put a FM transmitter together that used alot of these but they always showed how it went in on the circuit board.

Thanks. You are right. THe other BBS is back up and those guys have used this specific one before and its just liek you said. But ya, if it was a top down it would have been backwards. It would be nice if they mention more as to what angle they are showing.

 

[Beck]

Thanks.
I found out the bottom pic is the bottom of the tranny though.

Yes it is. But to be clear, the three letters under the top picture do not have anything to do with the bottom picture, as some might think by looking at the lines. It's only to show the dimensions. All one needs to know for pin designation is that the top picture is the flat side. The second picture is irrelevant. I've always thought some of their transistor diagrams had those pictures too close together.

Some of their sheets have the bottom view off to the side, which is better.

I had the same question last year when I was rebuilding the power supply for an SPX90. I emailed NTE and they gave me that "explanation."

-Tim