ETD51 (-030) darlington transistor TO-220 case...

[ChrisND@privacy.net]

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

 

[Phil Hobbs]

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

 

[ChrisND@privacy.net]

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

 

[Three Jeeps]

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?

 

[ChrisND@privacy.net]

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

 

[Gonzo333]

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

 

[chrisnd@privacy.net]

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