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sci / sci.electronics.components / ETD51 (-030) darlington transistor TO-220 case

SubjectAuthor
* ETD51 (-030) darlington transistor TO-220 caseChrisND@privacy.net
`* Re: ETD51 (-030) darlington transistor TO-220 casePhil Hobbs
 `* Re: ETD51 (-030) darlington transistor TO-220 caseChrisND@privacy.net
  +* Re: ETD51 (-030) darlington transistor TO-220 caseThree Jeeps
  |`- Re: ETD51 (-030) darlington transistor TO-220 caseChrisND@privacy.net
  `* Re: ETD51 (-030) darlington transistor TO-220 caseGonzo333
   `- Re: ETD51 (-030) darlington transistor TO-220 casechrisnd@privacy.net

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Subject: ETD51 (-030) darlington transistor TO-220 case
From: ChrisND@privacy.net
Newsgroups: sci.electronics.components
Date: Mon, 25 Apr 2022 16:45 UTC
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From: chrisnd@privacy.net (ChrisND@privacy.net)
Newsgroups: sci.electronics.components
Subject: ETD51 (-030) darlington transistor TO-220 case
Date: Mon, 25 Apr 2022 17:45:37 +0100
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Hi, can anyone point me in the direction of a data sheet for this device
please? Failing that, even some basic data would be useful!

TIA, Chris

Subject: Re: ETD51 (-030) darlington transistor TO-220 case
From: Phil Hobbs
Newsgroups: sci.electronics.components
Organization: A noiseless patient Spider
Date: Tue, 26 Apr 2022 15:26 UTC
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From: pcdhSpamMeSenseless@electrooptical.net (Phil Hobbs)
Newsgroups: sci.electronics.components
Subject: Re: ETD51 (-030) darlington transistor TO-220 case
Date: Tue, 26 Apr 2022 11:26:29 -0400
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ChrisND@privacy.net wrote:
> Hi, can anyone point me in the direction of a data sheet for this device
> please?  Failing that, even some basic data would be useful!
>
> TIA, Chris

I don't see anything online either. Is this a repair problem, or do you
have a box of those things and want to know what they're good for?

If it's a repair, I suggest posting a link to the schematic and a
description of what the box does, to sci.electronics.repair--there are a
lot more folks over there who can maybe help.

Good luck!

Cheers

Phil Hobbs

Subject: Re: ETD51 (-030) darlington transistor TO-220 case
From: ChrisND@privacy.net
Newsgroups: sci.electronics.components
Date: Tue, 26 Apr 2022 15:55 UTC
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From: chrisnd@privacy.net (ChrisND@privacy.net)
Newsgroups: sci.electronics.components
Subject: Re: ETD51 (-030) darlington transistor TO-220 case
Date: Tue, 26 Apr 2022 16:55:24 +0100
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On 26/04/2022 16:26, Phil Hobbs wrote:
> ChrisND@privacy.net wrote:
>> Hi, can anyone point me in the direction of a data sheet for this
>> device please?  Failing that, even some basic data would be useful!
>>
>> TIA, Chris
>
> I don't see anything online either.  Is this a repair problem, or do you
> have a box of those things and want to know what they're good for?
>
> If it's a repair, I suggest posting a link to the schematic and a
> description of what the box does, to sci.electronics.repair--there are a
> lot more folks over there who can maybe help.
>
> Good luck!
>
> Cheers
>
> Phil Hobbs

Ok, thanks for the guidance. For the record, a BU941ZT was suggested as
an alternative (its a motorcycle TCI box) - but I am not sure on what
basis. Either way, the latter doesn't work whereas the former did - to
some extent :-/

Chris

Subject: Re: ETD51 (-030) darlington transistor TO-220 case
From: Three Jeeps
Newsgroups: sci.electronics.components
Date: Tue, 26 Apr 2022 18:42 UTC
References: 1 2 3
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Subject: Re: ETD51 (-030) darlington transistor TO-220 case
From: jjhudak4@gmail.com (Three Jeeps)
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On Tuesday, April 26, 2022 at 11:55:27 AM UTC-4, chr...@privacy.net wrote:
> On 26/04/2022 16:26, Phil Hobbs wrote:
> > Chr...@privacy.net wrote:
> >> Hi, can anyone point me in the direction of a data sheet for this
> >> device please? Failing that, even some basic data would be useful!
> >>
> >> TIA, Chris
> >
> > I don't see anything online either. Is this a repair problem, or do you
> > have a box of those things and want to know what they're good for?
> >
> > If it's a repair, I suggest posting a link to the schematic and a
> > description of what the box does, to sci.electronics.repair--there are a
> > lot more folks over there who can maybe help.
> >
> > Good luck!
> >
> > Cheers
> >
> > Phil Hobbs
> Ok, thanks for the guidance. For the record, a BU941ZT was suggested as
> an alternative (its a motorcycle TCI box) - but I am not sure on what
> basis. Either way, the latter doesn't work whereas the former did - to
> some extent :-/
>
> Chris
Is what you posted ETD51 the correct p/n? I don't understand the suffix (-030). All combinations of the p/n string turn up empty (house number?)
My cross ref catalogs the most recent is 2010, provides no crosses either.
What does it do in the ckt?

Subject: Re: ETD51 (-030) darlington transistor TO-220 case
From: ChrisND@privacy.net
Newsgroups: sci.electronics.components
Date: Wed, 27 Apr 2022 11:53 UTC
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From: chrisnd@privacy.net (ChrisND@privacy.net)
Newsgroups: sci.electronics.components
Subject: Re: ETD51 (-030) darlington transistor TO-220 case
Date: Wed, 27 Apr 2022 12:53:16 +0100
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On 26/04/2022 19:42, Three Jeeps wrote:
> On Tuesday, April 26, 2022 at 11:55:27 AM UTC-4, chr...@privacy.net wrote:
>> On 26/04/2022 16:26, Phil Hobbs wrote:
>>> Chr...@privacy.net wrote:
>>>> Hi, can anyone point me in the direction of a data sheet for this
>>>> device please? Failing that, even some basic data would be useful!
>>>>
>> Ok, thanks for the guidance. For the record, a BU941ZT was suggested as
>> an alternative (its a motorcycle TCI box) - but I am not sure on what
>> basis. Either way, the latter doesn't work whereas the former did - to
>> some extent :-/
>>
> Is what you posted ETD51 the correct p/n? I don't understand the suffix (-030). All combinations of the p/n string turn up empty (house number?)
> My cross ref catalogs the most recent is 2010, provides no crosses either.
> What does it do in the ckt?

ETD51 I think is the generic type whereas ETD51-030 was from a specific
vendor (I think!). It is used as a driver for the primary of the HT
coil for the spark plug.

I have a datasheet for the BU941ZT which declares it to be an NPN
darlington - I just want to check the ETD51-030 has similar
characteristics and, above all, has the same pinout.

Chris

Subject: Re: ETD51 (-030) darlington transistor TO-220 case
From: Gonzo333
Newsgroups: sci.electronics.components
Organization: NewsgroupDirect
Date: Fri, 12 May 2023 18:45 UTC
References: 1 2 3
From: 806c65d27ecebc55f9069702ae00fec4@example.com (Gonzo333)
Newsgroups: sci.electronics.components
Subject: Re: ETD51 (-030) darlington transistor TO-220 case
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Hi Chris ,in the event that you haven't sorted-it , a Bosch BIP373 should work better than the original , though it does have a thermal cut-out past a certain temp. Also , STD901T will also work as many have been fitted to the first-series TCI-boxes for the 81 yamaha v-twins . They are also superior to the originals . Happy-Trails, Dave NZ

--
For full context, visit https://www.electrondepot.com/components/etd51-030-darlington-transistor-to-220-case-35218-.htm

Subject: Re: ETD51 (-030) darlington transistor TO-220 case
From: chrisnd@privacy.net
Newsgroups: sci.electronics.components
Date: Sat, 13 May 2023 15:58 UTC
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From: chrisnd@privacy.net (chrisnd@privacy.net)
Newsgroups: sci.electronics.components
Subject: Re: ETD51 (-030) darlington transistor TO-220 case
Date: Sat, 13 May 2023 16:58:53 +0100
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On 12/05/2023 19:45, Gonzo333 wrote:
> Hi Chris ,in the event that you haven't sorted-it ,  a Bosch BIP373
> should work better than the original , though it does have a thermal
> cut-out past a certain temp.  Also , STD901T will also work as many have
> been fitted to the first-series TCI-boxes for the 81 yamaha v-twins .
> They are also superior to the originals . Happy-Trails, Dave  NZ
>
Ta for that. I never sorted the TCI box and ended up buying a
replacement 2nd hand one. It didn't fix the original problem which
turned out to be...

....the breather 'wadding' in the bike cap fuel vent had become
non-breathing!
This was eventually, and tortuously, diagnosed by realising there was a
marked difference in float level between 'running' and 'static'

Cheers, though, I would like to get the original box functional again so
I'll give those a look.

Chris

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