Author Topic: I am looking to buy TO-3 package. Any help??  (Read 1409 times)

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Offline Enea

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I am looking to buy TO-3 package. Any help??
« on: January 22, 2022, 01:18:39 am »
Dear all,
for a propotype I am working on my customer asked me to use a TO-3 package.

I am having trouble to find where to buy those old faschion package (for my optoelectronic application).

Does aneybody has any hint, suggestion, advice on where I can buy 100 of those packages?

Many thanks in advance
 

Online jpanhalt

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Re: I am looking to buy TO-3 package. Any help??
« Reply #1 on: January 22, 2022, 01:25:03 am »
If it's a transistor, Digikey has seems to have plenty: https://www.digikey.com/en/products/filter/transistors-bipolar-bjt-single/276?s=N4IgjCBcpgTAnBaIDGUBmBDANgZwKYA0IA9lANogAsYAzAKzy0gC6xADgC5QgDKnAJwCWAOwDmIAL6TisCiEGYRuIZxIDcrSUA

Of course, the prices may be quite high, but if your "customer" insists, presumably it is willing to pay.
 

Offline bob91343

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Re: I am looking to buy TO-3 package. Any help??
« Reply #2 on: January 22, 2022, 01:44:04 am »
You can cannibalize an old transistor.
 

Offline Gyro

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Re: I am looking to buy TO-3 package. Any help??
« Reply #3 on: January 26, 2022, 12:14:27 pm »
If you search for 'Hermetic Packages' on the web, you will get more hits, eg.  http://www.platronics-seals.com/product/to-3-header/

Hopefully you can find a company that is a bit more local.
Regards, Chris

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Online gnuarm

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Re: I am looking to buy TO-3 package. Any help??
« Reply #4 on: January 26, 2022, 02:06:13 pm »
Dear all,
for a propotype I am working on my customer asked me to use a TO-3 package.

I am having trouble to find where to buy those old faschion package (for my optoelectronic application).

Does aneybody has any hint, suggestion, advice on where I can buy 100 of those packages?

Many thanks in advance

It's ok to push back when a customer makes an unreasonable request.  Explain to them the TO3 package is long ago obsolete and is very inefficient anyway. 

Do you have any idea why they like a TO3 package?  Why would they care?  Are you building an entire circuit in this package because the customer has a design with a TO3 package in it and your design will replace the existing part?
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Online free_electron

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Re: I am looking to buy TO-3 package. Any help??
« Reply #5 on: January 26, 2022, 02:53:48 pm »
o3 is not obsolete.many power transistors still come in that package.
Professional Electron Wrangler.
Any comments, or points of view expressed, are my own and not endorsed , induced or compensated by my employer(s).
 

Online gnuarm

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Re: I am looking to buy TO-3 package. Any help??
« Reply #6 on: January 26, 2022, 03:07:15 pm »
o3 is not obsolete.many power transistors still come in that package.

Yeah?  I can still buy buggy whips and even buggies.  I don't think anyone says they aren't obsolete, in fact "making buggy whips" is the way to say a business is out of touch with the market and itself obsolete. 

TO3 is obsolete.  Yeah, you can buy transistors in that package because people still need to maintain old systems.  Any new parts announced in TO3 packages lately?  Digikey returns 1,400 hits to TO3.  Remove the military items and you get 27, 24 active (not obsolete).  Four of those are not TO3 leaving 20 parts.  Of these only 9 are stocked, only 1 in quantities over 500.  Why?  Because they don't sell very many. 

At least Digikey doesn't return any hits on "buggy whip".  ;)
Rick C.  --  Puerto Rico is not a country... It's part of the USA
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Offline mazurov

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Re: I am looking to buy TO-3 package. Any help??
« Reply #7 on: January 26, 2022, 06:04:36 pm »
for a propotype I am working on my customer asked me to use a TO-3 package.

I am having trouble to find where to buy those old faschion package (for my optoelectronic application).

Does aneybody has any hint, suggestion, advice on where I can buy 100 of those packages?

Look for the places selling supplies for semiconductor labs, scientific supplies, etc. Such places often don't have a web presence,  you may need to go to the university that is offering courses, labs, etc. on semiconductor manufacturing, microfabrication, etc. and ask for the name of their supplier.

TO-3 are very expensive.  Last time I checked they were asking north of $50 for a piece, in qty. If your client pays expenses you may want to tell them the price beforehand.
With sufficient thrust, pigs fly just fine - RFC1925
 

Offline Pineapple Dan

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Re: I am looking to buy TO-3 package. Any help??
« Reply #8 on: January 28, 2022, 12:14:23 pm »
o3 is not obsolete.many power transistors still come in that package.

Yeah?  I can still buy buggy whips and even buggies.  I don't think anyone says they aren't obsolete, in fact "making buggy whips" is the way to say a business is out of touch with the market and itself obsolete. 

TO3 is obsolete.  Yeah, you can buy transistors in that package because people still need to maintain old systems.  Any new parts announced in TO3 packages lately?  Digikey returns 1,400 hits to TO3.  Remove the military items and you get 27, 24 active (not obsolete).  Four of those are not TO3 leaving 20 parts.  Of these only 9 are stocked, only 1 in quantities over 500.  Why?  Because they don't sell very many. 

At least Digikey doesn't return any hits on "buggy whip".  ;)

Buggy whips where never that popular even back in the day. I reckon only a handful were sold before people realised they were better off whipping the horse
 

Online free_electron

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Re: I am looking to buy TO-3 package. Any help??
« Reply #9 on: January 28, 2022, 02:23:51 pm »
Professional Electron Wrangler.
Any comments, or points of view expressed, are my own and not endorsed , induced or compensated by my employer(s).
 

Online gnuarm

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