NEED: TA7805S & TA7805F transistors

In message , Barry & Nikki writes

They're not transistors.

--
Clint Sharp

Dear Sirs,

We may able to supply you.

Would u pleased tell us the QTY u request ?

Thanks !

-- Patrick Cheung townt.com Address : 1805, Wu Sang House, 655 Nathan Road, Mongkok, Kowloon, Hong Kong Tel : +852-25055838 Fax : +852-25058121 E-mail : snipped-for-privacy@towntarget.com.hk Web-site :

or

"Clint Sharp" ???????: snipped-for-privacy@clintsmc.demon.co.uk...

then what are they???

"Barry & Nikki" wrote in news:-

9mdnX9rKrBbl8jZnZ2dnUVZ snipped-for-privacy@whidbeytel.com:

Voltage regulators. (Use Google)

On Sun, 30 Apr 2006 12:09:57 -0700, "Barry & Nikki" put finger to keyboard and composed:

First hits with Google:

- Franc Zabkar

--
Please remove one 'i' from my address when replying by email.

I was and am fully aware that their purpose is to serve as voltage regulators. Sorry I did not ask for a Bipolar Linear Integrated circuit

Is that better since the component police seem to want to point out and dazzle us with their much wanted knowledge of electrical components. While us lesser beings like myself shoudl be humbled by them and feel all I was ever taught means nothing. I bow down to those with so much knowledge and feel the need to point out others misappropriation of terminology. My sincere appologies. I guess knowing an exact part number no longer is enough for this newsgroup. If you need to know size, shape etc.. I can go into more detail now that I have been put on the correct path.

Keep copping an attitude like that an no one here will help you. Learn to use some common sense and a decent search engine.

7805 is the base part number. It is a +5 VDC 1A voltage regulator IC. It has been made by a lot of companies for decades. The prefix tells who made it, and the suffix tells any variations from the original design.

--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

"Barry & Nikki" wrote in news: snipped-for-privacy@whidbeytel.com:

You said "then what are they???"

I think that entitles me to assume that you were NOT fully aware.

Been there done that too... A decent search engine does not provide you with a part in hand. Came here like in the past hoping that someone could help with supplying a part not point out an honest mistake. What does pointing out what it is serve? It still does not provide me with a part. Obviously everyone on this group these days are just trying to compete with one another showing how much knowledge they have. What ever happened to the times people could trade and buy extra stuff that others may have. Amazing.

While

was

and

enough

more

"Barry & Nikki" wrote in news: snipped-for-privacy@whidbeytel.com:

I think you're right about the competition to make circular discussions around a popular thread, but you won't solve it this way. I had to post my first question three times just to get anyone to even look at it. :) But instead of getting bolshy I just tried to repost it more simply. By the third time I crudely went for the one-liner, but it worked.

Re search engines, they can find you a direct supply. A previous poster here showed you that the prefix is for a manufacturer, the number in the middle is the device, the suffix is the variations on the theme. It's not always easy to separate those strings from the whole, but a search engine works. First try whole string, you'll get some clues to try. One you have a repeatable text decription that you see in more than one result, try that, see if it gets similar numbers, so you can see the base number for the part. By the time you get that far, you'll have probably seen several sites offering to sell you one.

In your case, you're after a very standard part, and any big parts seller near you will have a choice of them.

Also, the moment your search lands you a link to a data sheet (usually PDF file), grab it. It will quickly explain the variations on the part letting you choose the right one, even when that part will eventually come from a different maker.

On Tue, 2 May 2006 06:02:20 -0700, "Barry & Nikki" put finger to keyboard and composed:

Several people have correctly pointed out that your parts are just plain vanilla 7805 regulators. You should be able to find one at just about any electronics parts outlet. The cost should be around $1. The only (?) possible complication may be the package style. For example, some packages may be insulated, in which case a metal replacement may require a mica or silicone washer and appropriate insulation for the retaining nut and bolt.

- Franc Zabkar

--
Please remove one 'i' from my address when replying by email.

If knowing what a common as dirt part number is doesn't help you find it, you're on your own. PLONK.

--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

Didn't anyone read?? I don't need thousands of these; just a couple. Sure the part is common, I found it on every website that I went to PRIOR to my post. Yes it is "cheap" but add in the shipping (or most require min. orders) that is required by these companies and it makes it not such a great deal. Newsgroups I thought were here for dealing with others with similar interests. Obviously everyone just wants to point out the obvious and share their infinite knowledge of a damn little part. If they are so common like everyone is so conveniently pointing out then why doesn't someone on this group have any (other than the one poster that is obviously based in China trying to sell me thousands of these) in a little parts bin. I came here hoping to trade mainly (one thing newsgroups were initially intended for) not get a blasting telling me how to use a search engine etc... As to "package" type; YES I do need these specific types becasue of circuit board layout restraints. So just "Any old common one will work" does not make the grade. You think I would waste my time asking here if I had not already done my research and been down to my local "parts shop"? Obviously most here must think so.

"Barry & Nikki" wrote in news:vtKdnXImPqtg0cbZnZ2dnUVZ snipped-for-privacy@whidbeytel.com:

.

"Barry & Nikki" wrote in news:vtKdnXImPqtg0cbZnZ2dnUVZ snipped-for-privacy@whidbeytel.com:

If you'd done so much researh you could tell us more than we've told you, why didn't you tell us to spare us repeating work, or doing things that weren't helpful?

Those parts are standard electrically, but I see they're not standard containers for them.

The first is easy, at least. TA7805S truly IS a standard part, bar the resin covering the tab. You haven't said a word about context, so whether they are to be run on a heatsink or not is anybody's guess, but if so, use a silicone or mica insulator and a nylon bush to insulate it, and if not, get some kind of insulating tube fitted tightly round it, preferably something like silicone impregnated fibreglass in case it needs to run hot.

The second is tougher. If you can establish what current it has to provide, see if a TO92 package can do it. Negative rails are usually drawing less that positive ones, that's probably why they aren't specifying a TO220 package for that as well. What's more, the TA7805F seems to have two forms, one with wires, the other with little bent pins for surface mounting. If you need the wired kind, then a TO220 package will do fine, if there's room. You could always cut part of the tab off it...

Find some broken equipment like fax machine, printer, scanner, anything that might have its own power supply. You'll probably find the mounting and insulating tube you'll want, as that's standard practise in a lot of gear. You might even find the parts you need, as they're used in PSU's made in bulk manufacturing, but rarely sold in small amounts for field replacement.

As they're probably made for a specialised design, did you try to contact the maker?

Last: try CPC (Combined Precision Components) of Preston Lancashire, UK. They specialise in supplying this kind of semi-custom part to anyone who asks and will pay for the shipping, anywhere in the world. They sell in any quantity you want, if they have the parts.

And in case this post still leaves you wanting to bawl and curse at me, remember that apart from that CPC tip, I knew NOTHING about these before. I have done nothing that you couldn't have done for yourself. When you give up 40 minutes to exclusive attend to one of MY problems, THEN you will have the right to curse me. >:)

I did not come here to "bawl or curse" anyone. Somehow everyone here that replies to posts goes into great detail trying to belittle and "educate" the person that just came here to look for a part. I do not need to be educated on electronics components (although I do appreciate your post) ALL I needed and was expecting was an email from somebody that says "Hey I got what you need, the price is $$$ ea.; contact me if this is what you were looking to pay". Instead I get everyone wanting to regurgitate ALL their "knowledge". What application I intend to use a part for should have no baring what so ever on me needing the part if I am looking for a SPECIFIC part that I gave a SPECIFIC part number for. A specific part number any other time would have been just what anybody needed but I guess that is no longer the case. If you specifically want a Granny Smith Apple and someone gives you a Red Delicious it ain't the same either. Yes they are both apples but different. The same with the parts I am seeking; I should have the right to substitute like for like.

"Lostgallifreyan" wrote in message news:Xns97BA9BD59781Elostgallifreyangmail@140.99.99.130...

hot.

provide,

forms,

and

replacement.

any

I

have

SNIP

I was hopeful that by now the penny would have dropped, k-ching!!... and you would have grasped what everyone is trying to tell you. You can go to ANY electronics part supplier and buy as few or as many 7805 IC's as you like.. THEY ARE GENERIC.

Here is data for the generic 7805 you can get anywhere (this one just happens to be Fairchild)

and here is Japan Radio Corp (not as common but readily available)

Here is the Toshiba TA7805 data

You don't absolutely and categorically need to buy TOSHIBA TA7805x at all, you can use an LM/ST/KA/HA/MC/UPC/NJM 7805 without any problems. The only apparent difference with the TA7805S version is that it is in an isolated plastic TO220 case and the TA7805F has a cut-off metal tab without a mounting hole. The generic LM7805 is a TO220 device with a non-isolated a metal tab and if you need to mount the tab to a heatsink or other metal part then just use a standard mica or other TO220 insulator kit.

Just so you can start your own research on the linear regulators Mouser carries for example go here and start looking

Watch it! He'll be looking for a part with the original date code next. ;-)

--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida