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ETD51 (-030) darlington transistor TO-220 case

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  ETD51 (-030) darlington transistor TO-220 case "ChrisND@privacy.net" <chrisnd@privacy.net> - 2022-04-25 17:45 +0100
    Re: ETD51 (-030) darlington transistor TO-220 case Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2022-04-26 11:26 -0400
      Re: ETD51 (-030) darlington transistor TO-220 case "ChrisND@privacy.net" <chrisnd@privacy.net> - 2022-04-26 16:55 +0100
        Re: ETD51 (-030) darlington transistor TO-220 case Three Jeeps <jjhudak4@gmail.com> - 2022-04-26 11:42 -0700
          Re: ETD51 (-030) darlington transistor TO-220 case "ChrisND@privacy.net" <chrisnd@privacy.net> - 2022-04-27 12:53 +0100
        Re: ETD51 (-030) darlington transistor TO-220 case Gonzo333 <806c65d27ecebc55f9069702ae00fec4@example.com> - 2023-05-12 18:45 +0000
          Re: ETD51 (-030) darlington transistor TO-220 case "chrisnd@privacy.net" <chrisnd@privacy.net> - 2023-05-13 16:58 +0100

#6484 — ETD51 (-030) darlington transistor TO-220 case

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

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#6485

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

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#6486

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

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#6487

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?   

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#6488

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

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#6514

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

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#6515

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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