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New Curve Tracer Test Fixture - Not for Vacuum Tubes, for SOT23 instead

 

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I¡¯m envious of all the folks who are building curve tracer test fixtures for vacuum tubes and eventually I will make one for myself. In the meantime I decided to go in the opposite direction entirely and make a Curve Tracer Fixture for testing surface mount SOT23 devices.

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I posted a few photos of the finished SOT23 Curve Tracer Fixture on the forum in an album called ¡°SOT23 Curve Tracer Fixture¡±.

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The hardest part was finding an SOT23 test and burn-in socket that was reasonably priced. It also helped (but it is not necessary) that I had a customizable blank (013-073) Tek curve tracer fixture to mount it on. The burn-in socket could have been mounted on any small box.

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Three wires and three small ferrite beads are all that is inside the fixture.

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For those of you that want to make one yourself the test and burn-in socket came from WaveShare in China (sales@...). Their part number is 499-P44-10 (REV.B). The price is $27 plus $14 to mail it via USPS. I have no affiliation with the manufacturer etc. Better pictures of the socket than I can take can be seen at

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Thanks for all the information on the most common surface mount packages that members of the forum provided to me a few months ago I was able to narrow my search to SOT23 as the package most often used. What would I do without all the help I get from this forum!

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Dennis

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Now I'm envious... Very nice. ?Post some sample curves. -- George

Sent from my iPad

On May 21, 2012, at 2:57 PM, "Dennis Tillman" <dennis@...> wrote:

?

I¡¯m envious of all the folks who are building curve tracer test fixtures for vacuum tubes and eventually I will make one for myself. In the meantime I decided to go in the opposite direction entirely and make a Curve Tracer Fixture for testing surface mount SOT23 devices.

?

I posted a few photos of the finished SOT23 Curve Tracer Fixture on the forum in an album called ¡°SOT23 Curve Tracer Fixture¡±.

?

The hardest part was finding an SOT23 test and burn-in socket that was reasonably priced. It also helped (but it is not necessary) that I had a customizable blank (013-073) Tek curve tracer fixture to mount it on. The burn-in socket could have been mounted on any small box.

?

Three wires and three small ferrite beads are all that is inside the fixture.

?

For those of you that want to make one yourself the test and burn-in socket came from WaveShare in China (sales@...). Their part number is 499-P44-10 (REV.B). The price is $27 plus $14 to mail it via USPS. I have no affiliation with the manufacturer etc. Better pictures of the socket than I can take can be seen at

?

Thanks for all the information on the most common surface mount packages that members of the forum provided to me a few months ago I was able to narrow my search to SOT23 as the package most often used. What would I do without all the help I get from this forum!

?

Dennis

?

?
charter_67
 

--- In TekScopes@..., "Dennis Tillman" <dennis@...> wrote:
For those of you that want to make one yourself the test and burn-in socket
came from WaveShare in China (sales@...). Their part number is
499-P44-10 (REV.B). The price is $27 plus $14 to mail it via USPS. I have no
affiliation with the manufacturer etc. Better pictures of the socket than I
can take can be seen at


Hi Dennis. What made you choose REV-B? REV-A is the most recent (2/10/06) according to the drawings. REV-B has 4/11/01 as the drawn date.

Cheers

Gordon
 

I made my own out of copper tape and a proto-board. The commercial socket does look just a tad more professional.
 

What made you choose REV-B? REV-A is the most recent (2/10/06) according to the drawings. REV-B has
4/11/01 as the drawn date.

----------------------------------------------------------


From the web site.

Note: There is no difference among the sockets 499-P44-10 (REV.B), 499-P44-20 (REV.A) and
499-P44-00, it is the same socket which marked "499-044-00".
Gordon
 

On 17/07/2012 19:56, ROLYNN PRECHTL K7DFW wrote:
Note: There is no difference among the sockets 499-P44-10 (REV.B), 499-P44-20 (REV.A) and
499-P44-00, it is the same socket which marked "499-044-00".
Thanks, missed that.

Gordon
 

I got one of these sockets, cost $35 with shipping from Hong Kong.
The socket has no mounting holes so I glued it to a small piece of
pc board to make a flange with two holes. I mounted that in a small box with 6 banana jacks. I'll post a photo in the photos section.

Doug

--- In TekScopes@..., "plazasalons" <jerem69@...> wrote:


I made my own out of copper tape and a proto-board. The commercial socket does look just a tad more professional.
 

Hi Gordon,
Everywhere I have ever lived and worked, Rev B came AFTER Rev A. Why would
they name things in reverse alphabetical order?

I don't recall seeing a choice at the time I ordered it.

Do you see any differences in the drawings?

Dennis

-----Original Message-----
From: charter_67, Sent: Tuesday, July 17, 2012 9:26 AM

--- In TekScopes@..., "Dennis Tillman" <dennis@...> wrote:
For those of you that want to make one yourself the test and burn-in
socket came from WaveShare in China (sales@...). Their part number is
499-P44-10 (REV.B). The price is $27 plus $14 to mail it via USPS. I
have no affiliation with the manufacturer etc. Better pictures of the
socket than I can take can be seen at


Hi Dennis. What made you choose REV-B? REV-A is the most recent (2/10/06)
according to the drawings. REV-B has 4/11/01 as the drawn date.

Cheers

Gordon
 

Sorry I took so many days to answer but I was away.

I'm delighted others have found a use for the SOT23 curve tracer test
fixture. I especially like the creativity others are employing to build
theirs. I was fortunate in having the blank fixture in my Tek parts drawer
since I like to make things as professionally as possible. So I spent my
entire life learning many skills so I could make anything I ever wanted and
do it so well it would be impossible to tell it wasn't made by Tek.

But I forget that others are not as lucky or as well equipped as I am to do
things like this. I had no idea anyone else would have a need for the SOT23
test fixture (that was short sighted) so I didn't bother to mention the
problems I had to overcome along the way. Yes, there are no mounting holes
for the socket which makes it very difficult to work with. After carefully
measuring where to drill 2 holes for the leads to come through I epoxied the
socket down to the top of the fixture. It worked so far.

Dennis

-----Original Message-----
From: TekScopes@... [mailto:TekScopes@...] On Behalf
Of Dennis Tillman
Sent: Saturday, July 21, 2012 4:55 PM
To: TekScopes@...
Subject: RE: [TekScopes] Re: New Curve Tracer Test Fixture - Not for Vacuum
Tubes, for SOT23 instead

Hi Gordon,
Everywhere I have ever lived and worked, Rev B came AFTER Rev A. Why would
they name things in reverse alphabetical order?

I don't recall seeing a choice at the time I ordered it.

Do you see any differences in the drawings?

Dennis

-----Original Message-----
From: charter_67, Sent: Tuesday, July 17, 2012 9:26 AM

--- In TekScopes@..., "Dennis Tillman" <dennis@...> wrote:
For those of you that want to make one yourself the test and burn-in
socket came from WaveShare in China (sales@...). Their part number is
499-P44-10 (REV.B). The price is $27 plus $14 to mail it via USPS. I
have no affiliation with the manufacturer etc. Better pictures of the
socket than I can take can be seen at


Hi Dennis. What made you choose REV-B? REV-A is the most recent (2/10/06)
according to the drawings. REV-B has 4/11/01 as the drawn date.

Cheers

Gordon



------------------------------------

Yahoo! Groups Links
Gordon
 

On 22/07/2012 00:54, Dennis Tillman wrote:
Everywhere I have ever lived and worked, Rev B came AFTER Rev A. Why would
they name things in reverse alphabetical order?
No idea, but that's the way it looks. BTW Rollyn pointed out that there's apparently no difference, it's on the web site, I just missed it.

I don't recall seeing a choice at the time I ordered it.
There are three listed for some reason.

Do you see any differences in the drawings?
Slight. From memory the contacts looked slightly different and at least one of the dimensions.

Cheers

Gordon

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