TCXO (shopping for replacement)

Started by George Herold September 11, 2017
Hi All, We have the following TCXO in a product.
http://www.abracon.com/Oscillators/ASTX-01H.pdf

We use the 5 ppm version, 4.096 MHz

EOL, I tried contacting Abracon for replacements, but I've heard nothing 
back.  (I'll try the phone later today.) 

I've got a bunch of PCB's that need the part. 
I went looking on Digikey for other TCXO's all are obsolete... 
(bummer)

The part has a weird footprint, but I can make some 'interface' pcb if I 
have to.  

What vendors, distributors should I look at?  

TIA,

George H.     
On Monday, September 11, 2017 at 10:00:58 AM UTC-4, George Herold wrote:
> Hi All, We have the following TCXO in a product. > http://www.abracon.com/Oscillators/ASTX-01H.pdf > > We use the 5 ppm version, 4.096 MHz > > EOL, I tried contacting Abracon for replacements, but I've heard nothing > back. (I'll try the phone later today.) > > I've got a bunch of PCB's that need the part. > I went looking on Digikey for other TCXO's all are obsolete... > (bummer) > > The part has a weird footprint, but I can make some 'interface' pcb if I > have to. > > What vendors, distributors should I look at? > > TIA, > > George H.
Oh, it's a 5V part. (There seems to be very few 5V XO's!) GH
 
> > > > What vendors, distributors should I look at? >
http://www.greenrayindustries.com/default.html
On Monday, September 11, 2017 at 10:51:51 AM UTC-4, mako...@yahoo.com wrote:
> > > > > > What vendors, distributors should I look at? > > > > http://www.greenrayindustries.com/default.html
Thanks, I'm looking here too. http://www.cardinalxtal.com (I hope I don't have to buy 1000 pieces) GH
On Mon, 11 Sep 2017 07:00:46 -0700 (PDT), George Herold
<gherold@teachspin.com> wrote:

>Hi All, We have the following TCXO in a product. >http://www.abracon.com/Oscillators/ASTX-01H.pdf > >We use the 5 ppm version, 4.096 MHz > >EOL, I tried contacting Abracon for replacements, but I've heard nothing >back. (I'll try the phone later today.) > >I've got a bunch of PCB's that need the part. >I went looking on Digikey for other TCXO's all are obsolete... >(bummer) > >The part has a weird footprint, but I can make some 'interface' pcb if I >have to. > >What vendors, distributors should I look at? > >TIA, > >George H.
I've never seen an XO in a package like that, so it's not likely you will find a drop-in replacement. We like Crystek, Fox, Cardinal, AVX. We always try to use a multi-sourced part, generally the 7x5mm surface-mount package. There are some dynamite OCXOs in the 1"x1" thru-hole package lately, astounding phase noise and stability for about $75. -- John Larkin Highland Technology, Inc lunatic fringe electronics
On Mon, 11 Sep 2017 07:53:54 -0700 (PDT), George Herold
<gherold@teachspin.com> wrote:

>On Monday, September 11, 2017 at 10:51:51 AM UTC-4, mako...@yahoo.com wrote: >> > > >> > > What vendors, distributors should I look at? >> > >> >> http://www.greenrayindustries.com/default.html > >Thanks, I'm looking here too. >http://www.cardinalxtal.com >(I hope I don't have to buy 1000 pieces) >GH
I did some Googling and found: <http://www.oscilent.com/spec_pages/TCXO_VCXO_VCO/TC-531to534.html> -- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558
On Monday, September 11, 2017 at 11:42:56 AM UTC-4, Jeff Liebermann wrote:
> On Mon, 11 Sep 2017 07:53:54 -0700 (PDT), George Herold > <gherold@teachspin.com> wrote: > > >On Monday, September 11, 2017 at 10:51:51 AM UTC-4, mako...@yahoo.com wrote: > >> > > > >> > > What vendors, distributors should I look at? > >> > > >> > >> http://www.greenrayindustries.com/default.html > > > >Thanks, I'm looking here too. > >http://www.cardinalxtal.com > >(I hope I don't have to buy 1000 pieces) > >GH > > I did some Googling and found: > <http://www.oscilent.com/spec_pages/TCXO_VCXO_VCO/TC-531to534.html>
Wow! OK I'm giving them a call! OK, looks promising. I told the sales guy that if they have the part I owe you a beer, he said he'd buy you a beer too. (or some other beverage) George H.
> > > -- > Jeff Liebermann jeffl@cruzio.com > 150 Felker St #D http://www.LearnByDestroying.com > Santa Cruz CA 95060 http://802.11junk.com > Skype: JeffLiebermann AE6KS 831-336-2558
On Mon, 11 Sep 2017 09:47:29 -0700 (PDT), George Herold
<gherold@teachspin.com> wrote:

>On Monday, September 11, 2017 at 11:42:56 AM UTC-4, Jeff Liebermann wrote: >> I did some Googling and found: >> <http://www.oscilent.com/spec_pages/TCXO_VCXO_VCO/TC-531to534.html>
>Wow! OK I'm giving them a call!
Best of luck. I thought I recognized the package. I've seen it used in old analog only cell phones, and early GPS receivers, dating back to the mid 1980's. If the crystal company was in business during this time period, they probably made a similar TCXO. However, the odd package and the 5vdc power requirement, are probably going to make finding an exact replacement difficult. I also found the same package used by Toyo/Toyocom/Epson. <http://pdf1.alldatasheet.com/datasheet-pdf/view/161546/EPSONTOYOCOM/TCO-987/+0WQ558VwxSOOUScTpUuidMaLLLL+/datasheet.pdf> Unfortunately, that's about all that's useful for this model. The PS voltage and frequency ranges are all wrong. However, if they have the package, they also may have old stock or something laying around.
>OK, looks promising. >I told the sales guy that if they have the part I owe you a beer, >he said he'd buy you a beer too. (or some other beverage)
Thanks, but I don't consume alcohol (except for cleaning off flux and degreasing parts). Incidentally, the Google search key that I used was: <https://www.google.com/search?q=tape+and+reel+tcxo+5vdc&tbm=isch> I use an image search first to look for the uncommon package. I also had to use multiple variations on 5vdc before anything appeared. The Toyocom part was found by searching Ebay for a 4.096 Mhz TXCO. I didn't find anything useful, but looking through "similar" hits found a TCXO with the same package. I didn't have time to check if the pinout on the Oscilent part is the same as the original Abracon part. -- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558
On Monday, September 11, 2017 at 8:42:54 AM UTC-7, John Larkin wrote:
> We like Crystek, Fox, Cardinal, AVX. We always try to use a > multi-sourced part, generally the 7x5mm surface-mount package. > > > There are some dynamite OCXOs in the 1"x1" thru-hole package lately, > astounding phase noise and stability for about $75.
Valpey has some decent OCXOs in that form factor, but they sure aren't $75. Whose parts are you thinking of? -- john, KE5FX
On Mon, 11 Sep 2017 17:57:39 -0700 (PDT), "John Miles, KE5FX"
<jmiles@gmail.com> wrote:

>On Monday, September 11, 2017 at 8:42:54 AM UTC-7, John Larkin wrote: >> We like Crystek, Fox, Cardinal, AVX. We always try to use a >> multi-sourced part, generally the 7x5mm surface-mount package. >> >> >> There are some dynamite OCXOs in the 1"x1" thru-hole package lately, >> astounding phase noise and stability for about $75. > >Valpey has some decent OCXOs in that form factor, but they sure >aren't $75. Whose parts are you thinking of? > >-- john, KE5FX >
These two. They are drop-ins, except that one has fatter pins than the other. TAITIEN NA-10M-2051 RoHS ABRACON AOCJY3-10.000MHZ RoHS MORE $ I'm putting a little potting shell cover over mine, which cuts power consumption and improves phase noise. https://www.dropbox.com/s/10v1wd6lvya2slz/OCXOs.JPG?raw=1 -- John Larkin Highland Technology, Inc picosecond timing precision measurement jlarkin att highlandtechnology dott com http://www.highlandtechnology.com