Transistor Package? Smaller than SOT23 - Electronic Circuits Projects Diagrams Free

Fred.Amoson · 8th November 2007, 02:14 PM

I'm doing some debugging on a circuit board. I've determined that it has a bad transistor, a 3 terminal PNP transistor. The package is in the shape of the SOT23 package, but is about half the size. Does anyone know what package this would be?

The only markings on the transistor are "GA" if that helps.

Thanks!

Papabravo · 8th November 2007, 10:59 PM

It is probably an SC-70 package. Without some clue as to the manufacturer you have almost no hope of figuring out what part it is.

mvs sarma · 9th November 2007, 07:16 AM

Quote:

Originally Posted by Papabravo

It is probably an SC-70 package. Without some clue as to the manufacturer you have almost no hope of figuring out what part it is.

Some times when we face a problem witha device and have to service our own equipmet-- we can perhaps never know the maufacturer or even if the device is a transistor or FET (if transistor whether pnp or npn)

I have an issue with a popular brand camera- Fujifilm Axia AX100

It has a 8 pin ssop with code S06A - hopefully a dc-dc converter with 2 clls input and to derive boltages required for camera electronics. I could not decode and get anequvalent till date for the last one year. Neither the local sevice available fot it. I had to scrap the camera for just this IC.

So i feel to be able to know which company an SMD belongs , perhaps highly impracticable.

speakerguy79 · 9th November 2007, 10:38 AM

Well, I would find the person who designed the circuit so I could

a) ask him what the part was and
b) beat his ass for using something that small

Papabravo · 9th November 2007, 11:14 PM

Quote:

Originally Posted by speakerguy79

Well, I would find the person who designed the circuit so I could

a) ask him what the part was and
b) beat his ass for using something that small

Yeah!...Lotta good that'll do since they don't make parts for human convenience in handling anymore. Ever try to desolder a 256 contact BGA? I guess 0402 resistors would give you a heart attack, and the SC-70 is not even the smallest package that a transistor comes in.

mneary · 9th November 2007, 11:50 PM

Those small parts make it possible for your phone to fit in a pocket.

speakerguy79 · 10th November 2007, 12:36 AM

Did you guys not see the smiley?

I've never done 0402s but have used 0603s, TSSOPs, and SOT-23s with some regularity. Erem tweezers and a magnifying glass make it so much easier (but not necessarily easy).

Gordz · 10th November 2007, 05:05 AM

Quote:

Originally Posted by mvs sarma

I have an issue with a popular brand camera- Fujifilm Axia AX100 It has a 8 pin ssop with code S06A .

Take a look here
http://www.national.com/ds/LM/LM2621.pdf#page=2

mvs sarma · 10th November 2007, 11:09 AM

Quote:

Originally Posted by Gordz

Take a look here
http://www.national.com/ds/LM/LM2621.pdf#page=2

Thank you very much- for the great info Gordz.

At last, i got info after a prolonged search, only with your help.

Gordz · 10th November 2007, 02:52 PM

Glad to help, I recognised the part number from some work I was doing a little while back.

spuffock · 12th November 2007, 11:20 AM

google for marsport gm4pmk

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8th November 2007, 02:14 PM	(permalink)
Fred.Amoson	Transistor Package? Smaller than SOT23 I'm doing some debugging on a circuit board. I've determined that it has a bad transistor, a 3 terminal PNP transistor. The package is in the shape of the SOT23 package, but is about half the size. Does anyone know what package this would be? The only markings on the transistor are "GA" if that helps. Thanks!

8th November 2007, 10:59 PM	(permalink)
Papabravo	It is probably an SC-70 package. Without some clue as to the manufacturer you have almost no hope of figuring out what part it is.

9th November 2007, 10:38 AM	(permalink)
speakerguy79	Well, I would find the person who designed the circuit so I could a) ask him what the part was and b) beat his ass for using something that small

9th November 2007, 11:50 PM	(permalink)
mneary	Those small parts make it possible for your phone to fit in a pocket.

10th November 2007, 12:36 AM	(permalink)
speakerguy79	Did you guys not see the smiley? I've never done 0402s but have used 0603s, TSSOPs, and SOT-23s with some regularity. Erem tweezers and a magnifying glass make it so much easier (but not necessarily easy).

10th November 2007, 02:52 PM	(permalink)
Gordz	Glad to help, I recognised the part number from some work I was doing a little while back.

12th November 2007, 11:20 AM	(permalink)
spuffock	google for marsport gm4pmk