OT Lookng for data on TO66 device


Dave Brown
 

Have a few dozen or so of these and would like to maybe use them - DC10033B.
Any info appreciated - off list. The internet plus my stash of old
databooks has failed me!
Thanks Dave B, NZ


Ed Breya
 

If they are quite old, look for them possibly made by Delco - the GM brand that was used in car radios.

Ed


Tom Lee
 

From the little info that exists on the web, it seems that it's a Moto part from the mid-1980s (or so say the couple of vendors claiming to have these for sale). Couldn't dredge up a datasheet, though.

Tom

--
Prof. Thomas H. Lee
Allen Ctr., Rm. 205
350 Jane Stanford Way
Stanford University
Stanford, CA 94305-4070
http://www-smirc.stanford.edu

On 1/17/2022 21:45, Ed Breya via groups.io wrote:
If they are quite old, look for them possibly made by Delco - the GM brand that was used in car radios.

Ed




Geoffrey Thomas
 

I searched for Motorola DC10033 and this was one of the links:

https://www.avspares.com/parts/search?parts=DC10033

I haven't bothered to go further down the rabbit-hole.
I don't know why I thought Motorola except for the fact I have some old to-66 Motorola power transistors for an amp. I never got around to building back in the 70's. Good luck.
:)

Geoff.

On 18/01/2022 02:20, Dave Brown wrote:
Have a few dozen or so of these and would like to maybe use them - DC10033B.
Any info appreciated - off list. The internet plus my stash of old
databooks has failed me!
Thanks Dave B, NZ


Roy Thistle
 

There's some branded with the Motorola icon... and labelled Mexico... looks like a TO66 case to me.
They might have been some Moto radio parts? with a Moto house number?
Not sure.
DC20033B isn't AFAIK, a JEDEC, or Pro Electron number. or JIS number. ... or any commercial Moto number.
It might have been from a NATO bin?
It's probably a Si power transistor; but it could be something like a thyristor. or scr too.
You could take the top off of one of them.
You could measure some of the parameters.

--
Roy Thistle


Merchison Burke
 

This web site says they have the pdf for a Motorola MOSFET but you have to sign-in to download it.

https://www.jotrin.com/product/parts/DC10033B

On 2022-01-17 9:20 p.m., Dave Brown wrote:
Have a few dozen or so of these and would like to maybe use them - DC10033B.
Any info appreciated - off list. The internet plus my stash of old
databooks has failed me!
Thanks Dave B, NZ




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Dave Wise
 

My spam filter calls it a spear-phish.

Dave Wise

From: TekScopes@groups.io <TekScopes@groups.io> On Behalf Of Merchison Burke via groups.io
Sent: Tuesday, January 18, 2022 10:43 AM
To: TekScopes@groups.io
Subject: Re: [TekScopes] OT Lookng for data on TO66 device

This web site says they have the pdf for a Motorola MOSFET but you have
to sign-in to download it.

https://www.jotrin.com/product/parts/DC10033B<https://www.jotrin.com/product/parts/DC10033B>



On 2022-01-17 9:20 p.m., Dave Brown wrote:
Have a few dozen or so of these and would like to maybe use them - DC10033B.
Any info appreciated - off list. The internet plus my stash of old
databooks has failed me!
Thanks Dave B, NZ






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ken chalfant
 

Greetings,

I tried to help with no luck.

I have a large Motorola data book from 1966 and complete Motorola data book sets from 1974 and 1984.

I searched for DC-10033B. Unfortunately, I didn't even find any similar numbers.

Sorry, but at least you know not to waste time in data books from those years.

Regards,

Ken

On 18Jan, 2022, at 12:09 PM, Dave Wise <david_wise@phoenix.com> wrote:

My spam filter calls it a spear-phish.

Dave Wise

From: TekScopes@groups.io <TekScopes@groups.io> On Behalf Of Merchison Burke via groups.io
Sent: Tuesday, January 18, 2022 10:43 AM
To: TekScopes@groups.io
Subject: Re: [TekScopes] OT Lookng for data on TO66 device

This web site says they have the pdf for a Motorola MOSFET but you have
to sign-in to download it.

https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.jotrin.com%2Fproduct%2Fparts%2FDC10033B&;data=04%7C01%7C%7C76b3d41e7a904a221ebf08d9dab6b92b%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637781300590255913%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&amp;sdata=XkB4hRTOs0ioGr2kBOTyP6ucyqiwNM2HCGkUSdsKTfo%3D&amp;reserved=0<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.jotrin.com%2Fproduct%2Fparts%2FDC10033B&;data=04%7C01%7C%7C76b3d41e7a904a221ebf08d9dab6b92b%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637781300590255913%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&amp;sdata=XkB4hRTOs0ioGr2kBOTyP6ucyqiwNM2HCGkUSdsKTfo%3D&amp;reserved=0>



On 2022-01-17 9:20 p.m., Dave Brown wrote:
Have a few dozen or so of these and would like to maybe use them - DC10033B.
Any info appreciated - off list. The internet plus my stash of old
databooks has failed me!
Thanks Dave B, NZ






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Tom Lee
 

Yes, it looks like it is a house-numbered part. "DC" is not a standard prefix for Moto transistors. I did a quick search through their TO-66 offerings, and found nothing with 10033B in the part number.

Time to break out the curve tracer to start characterizing it. A little additional work with a simple jig to determine ft, and you can make your own datasheet.

Tom

--
Prof. Thomas H. Lee
Allen Ctr., Rm. 205B
350 Jane Stanford Way
Stanford University
Stanford, CA 94305-4070
http://www-smirc.stanford.edu

On 1/18/2022 12:39, ken chalfant wrote:
Greetings,

I tried to help with no luck.

I have a large Motorola data book from 1966 and complete Motorola data book sets from 1974 and 1984.

I searched for DC-10033B. Unfortunately, I didn't even find any similar numbers.

Sorry, but at least you know not to waste time in data books from those years.

Regards,

Ken





On 18Jan, 2022, at 12:09 PM, Dave Wise <david_wise@phoenix.com> wrote:

My spam filter calls it a spear-phish.

Dave Wise

From: TekScopes@groups.io <TekScopes@groups.io> On Behalf Of Merchison Burke via groups.io
Sent: Tuesday, January 18, 2022 10:43 AM
To: TekScopes@groups.io
Subject: Re: [TekScopes] OT Lookng for data on TO66 device

This web site says they have the pdf for a Motorola MOSFET but you have
to sign-in to download it.

https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.jotrin.com%2Fproduct%2Fparts%2FDC10033B&;data=04%7C01%7C%7C76b3d41e7a904a221ebf08d9dab6b92b%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637781300590255913%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&amp;sdata=XkB4hRTOs0ioGr2kBOTyP6ucyqiwNM2HCGkUSdsKTfo%3D&amp;reserved=0<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.jotrin.com%2Fproduct%2Fparts%2FDC10033B&;data=04%7C01%7C%7C76b3d41e7a904a221ebf08d9dab6b92b%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637781300590255913%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&amp;sdata=XkB4hRTOs0ioGr2kBOTyP6ucyqiwNM2HCGkUSdsKTfo%3D&amp;reserved=0>



On 2022-01-17 9:20 p.m., Dave Brown wrote:
Have a few dozen or so of these and would like to maybe use them - DC10033B.
Any info appreciated - off list. The internet plus my stash of old
databooks has failed me!
Thanks Dave B, NZ





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Renée
 

I wonder if It is a Delco part?
Renée

On 1/18/22 12:49 PM, Tom Lee wrote:
Yes, it looks like it is a house-numbered part. "DC" is not a standard prefix for Moto transistors. I did a quick search through their TO-66 offerings, and found nothing with 10033B in the part number.

Time to break out the curve tracer to start characterizing it. A little additional work with a simple jig to determine ft, and you can make your own datasheet.

Tom


Brad Thompson
 

Renée wrote on 1/18/2022 4:33 PM:

I wonder if It is a Delco part?
Hello--

IIRC, Delco used a "DTS" prefix for some of  its transistors (e.g., DTS-423).

Also, RCA sold TO-66 packaged power transistors, triacs and SCRs
but used five-digit part numbers for custom parts.

73--

Brad  AA1IP


Dave Brown
 

Thanks for all the suggestions - looks like I will have to drag out the curve tracer etc and see what gives. I've been down all the rabbit holes that have been suggested - am not inclined to log into any websites for the obvious reasons - as well as digging through the stash of old data books here- but no luck. It certainly is an odd part number- nothing like anything else I've seen.
DaveB, NZ

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of Brad Thompson
Sent: Wednesday, January 19, 2022 11:06
To: TekScopes@groups.io
Subject: Re: [TekScopes] OT Lookng for data on TO66 device

Renée wrote on 1/18/2022 4:33 PM:

I wonder if It is a Delco part?
Hello--

IIRC, Delco used a "DTS" prefix for some of its transistors (e.g., DTS-423).

Also, RCA sold TO-66 packaged power transistors, triacs and SCRs but used five-digit part numbers for custom parts.

73--

Brad AA1IP


Ed Breya
 

Personally, I wouldn't bother trying to re-use unknown TO-66 parts. I have quite a few, many identifiable, and some with cryptic markings, so unknown. I regard them all as "not for new designs," or "maintenance only," to be used possibly as replacements in old gear, where they can readily be fitted in TO-66 spots if needed, and found to be acceptable. It's unlikely that they are anything special, so newer and easier to use (package-wise) parts are a better way to go. If you happen to have plenty of the insulators and such (I do, but would still not bother, except to refit into old gear), and the patience to make the mount patterns, then you can have some fun with them, but the real deal will be lurking in the background.

For instance, being power type devices, their best use would be in power applications, and heat-sinked accordingly. The problem is that you'll have no SOA spec to go by. You can get some idea by sacrificing a few under various conditions, and estimate the capabilities, but you still won't know for sure what to expect. If they're not to be used for power, then there's even less need to bother with the mounting hassle, and just use known, modern parts with specs instead. To me, SOA is the main spec for power parts. I've even found many nice modern parts that do have data sheets, but no SOA curves - I don't use them for serious stuff, except at highly de-rated capability, based on guessing from the the other data. If you have no data at all, then it's really tough to use and trust the parts.

You can as discussed, check on a curve tracer to at least figure out what they are, and then push them to various limits to check the utility for power stuff. Once you have the type (assuming Si bipolar NPN or PNP), the next thing is breakdown Vcbo, which you can check without damage. If they turn out particularly high - like many hundreds of volts - they may be useful for higher V applications, but chances are they will be kind of medium, and nothing special. Measuring and estimating other "power" things may get complicated, with heat sinking and burning out some parts, but could be interesting.

It's possible that they are not regular bipolar transistors, but something else, like MOSFETs, Darlingtons, thyristors, or even three-terminal regulators (I believe some 78 and 79 series regulators were available in TO-66 in the old days - or maybe not). Most likely though, just regular old transistors that can be replaced by modern and easier to use stuff.

One last thing is that the old metal-cased parts may still have use just for the package, rather than the guts. The hermetic glass lead seals can be handy in vacuum applications and such, if you can bond the package. I save oldies - even burned out parts - that seem like the sealing elements may be usable in some other form. TO-3 and TO-66 not so much, but TO-36 (or is it -136, the "doorknob"), and stud rectifier ends and such can make nice hermetic power feed-throughs.

Good luck, and have some fun and discovery.

Ed


Alex
 

On Tue, Jan 18, 2022 at 12:40 PM, ken chalfant wrote:
I searched for DC-10033B. Unfortunately, I didn't even find any similar
numbers.
Probably a house number specified by the customer that ordered the parts in bulk quantity.
If its the case it will not show up on any regular data books.


Roy J. Tellason, Sr.
 

On Tuesday 18 January 2022 12:22:56 pm Roy Thistle wrote:
It's probably a Si power transistor; but it could be something like a thyristor. or scr too.
You could take the top off of one of them.
You could measure some of the parameters.
For stuff like this I find the cheap (~$20 or so) component tester to be real handy. You just hook it up and push the button and it tells you what kind of a component it sees...

--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space,  a critter that can
be killed but can't be tamed.  --Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin


 

On Wed, Jan 19, 2022 at 09:49 AM, Alex wrote:


On Tue, Jan 18, 2022 at 12:40 PM, ken chalfant wrote:
I searched for DC-10033B. Unfortunately, I didn't even find any similar
numbers.
Probably a house number specified by the customer that ordered the parts in
bulk quantity.
If its the case it will not show up on any regular data books.
10033B would be just outside the beltway, if the DC indicates Washington DC. The neighborhoods around the beltway are pretty old, dating back to the 1900s in some cases, and there was a fair bit of subdivision of parcels in the mid-century (so the B might make sense). There were also a lot of government employees in those neighborhoods (and still are), including many technical people working at places like NBS (now NIST), NASA, and NOAA (among others), so it's certainly possible.

-- Jeff Dutky