[time-nuts] 5MHz ocxo- Opening Solder sealed cans

Tom Miller tmiller at skylinenet.net
Thu Jul 26 16:49:19 UTC 2012


Hi Bob,

Did you look at his pictures of the oscillator? I think the base will need 
to be secured and the top pulled off. This is different from most of the 
OCXOs I have seen.

Regards,
Tom



----- Original Message ----- 
From: "Bob Camp" <lists at rtty.us>
To: "'Discussion of precise time and frequency measurement'" 
<time-nuts at febo.com>
Sent: Thursday, July 26, 2012 12:05 PM
Subject: Re: [time-nuts] 5MHz ocxo- Opening Solder sealed cans


Hi

Standard approach:

1) Secure the "top" of the part (the cover) in a vise. You need something
between the cover and metal jaws to keep it from wicking the heat. Leather
works, so do plastic inserts. Keep the jaws as far away from the base as
practical.

2) Fire up what ever you have for a major soldering job. Big old tube era
soldering irons are the weapon of choice for many. Others use torches. If
it's an old electric iron, let it heat for at least 30 minutes.

3) Start working around the lip of the base with the iron. As you heat, the
solder will start to run. Wick it out with your favorite brand of wicking
material (coax braid also works). You probably will need to make two loops
around the part to get the bulk of the solder off.

4) Continue with heat, and use a knife blade to separate the base from the
cover. It's a little bit at a time thing. Some parts will go fast, others
not so fast. You slowly walk the two parts apart. On the part you have, you
may need to spread the base open a bit to get the cover to move easily.

First time out, it can take a while to get it done. After you have done a
few hundred, it's easier.

Bob

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Demian Martin
Sent: Wednesday, July 25, 2012 6:47 PM
To: time-nuts at febo.com
Subject: [time-nuts] 5MHz ocxo- Opening Solder sealed cans

Bob:
Perhaps you can describe how to do this. I can't see a way that would not
make a huge mess (big torch) or not ever get there (big soldering iron). I
would really like to be able to get inside of some of these without making
them all into trash.
                    Demian


____________________________________________________________________________
_____________________
Date: Wed, 25 Jul 2012 18:10:55 -0400
From: Bob Camp <lists at rtty.us>
To: Discussion of precise time and frequency measurement
<time-nuts at febo.com>
Subject: Re: [time-nuts] 5MHz ocxo
Message-ID: <A99EEE8D-E120-48CF-84D6-D3434B754B1A at rtty.us>
Content-Type: text/plain; charset=windows-1252

Hi

That's just a basic solder sealed package. It should be pretty easy to pop
open. You'll use up a bit of solder wick doing it?

Bob



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