Switching Diode ID required

G

Gareth Magennis

Guest
Hi,

trying to find equivalents for a Dual Diode T220F package (insulated tab).
Device is marked RF2001, but can't seem to find a datasheet.

It is from a SMPS and 4 of these rectify the output of the switching
transformer to create the final DC voltages.

I'm not much up on SMPS techology - hate repairng the things - should these
be Shottkys, Ultra fast switching or what?




Cheers,

Gareth.
 
Gareth Magennis <sound.service@btconnect.com> wrote in message
news:O8ednVa0RtE3Ox3QnZ2dnUVZ8ludnZ2d@bt.com...
Hi,

trying to find equivalents for a Dual Diode T220F package (insulated tab).
Device is marked RF2001, but can't seem to find a datasheet.

It is from a SMPS and 4 of these rectify the output of the switching
transformer to create the final DC voltages.

I'm not much up on SMPS techology - hate repairng the things - should
these
be Shottkys, Ultra fast switching or what?




Cheers,

Gareth.
Click to expand...

near enough any old generic dual epitaxial I would have thought , V rating
of caps hints at the minimum V rating and then TO220 suggests the A rating .
Just
which polarity the centre connection , and mica and insulators perhaps if
straight TO220
 
On Wed, 16 Mar 2011 12:01:33 +0000, Gareth Magennis wrote:

Hi,

trying to find equivalents for a Dual Diode T220F package (insulated
tab). Device is marked RF2001, but can't seem to find a datasheet.

It is from a SMPS and 4 of these rectify the output of the switching
transformer to create the final DC voltages.

I'm not much up on SMPS techology - hate repairng the things - should
these be Shottkys, Ultra fast switching or what?
Click to expand...
Schottky diodes are used in many SMPS including but not limited to
chargers (wall wart) adapters and open frame, and PC power supplies.
And are made from various barrier metals and alloys. Some packages
are TO220, TO126, TO247,DO41, DO15 etc...





--
Live Fast Die Young, Leave A Pretty Corpse
 
Most likely fast-recovery dual diodes. The '2001' might mean
200V and 1A ratings, but that's only a guess. Can you
make out any manufacturer markings other
than that number?

Also, what is the connection? This is probably for an output that is
clearly specified in current rating and output voltage on the
power-supply nameplate.

It might be necessary to use an uninsulated replacement part, with
insulation parts added.
 
"Gareth Magennis"
trying to find equivalents for a Dual Diode T220F package (insulated tab).
Device is marked RF2001, but can't seem to find a datasheet.
Click to expand...

** You did not look very hard - using " rf2001 diode " the pdf below is the
third hit.

It is NOT in fact a dual diode - dumbass.

http://www.rohm.com/products/databook/di/pdf/rf2001t4s.pdf



..... Phil
 
It is NOT in fact a dual diode -- dumbass.
Click to expand...
You are confusing the poster with a famous French writer. Two, actually --
pere et fils.
 
"William Sommerwanker"

It is NOT in fact a dual diode -- dumbass.

You are confusing the poster with a famous French writer.
Click to expand...

** Somebody once made a bunch of money from a song that declared:

" Pablo Picasso was not an asshole "

So, maybe there is a buck to be made from one that says:

" Alexandre Dumas was not a dumbass "


Wadaya think ??



.... Phil
 
"Phil Allison" <phil_a@tpg.com.au> wrote in message
news:8ud0glFu9vU1@mid.individual.net...
"Gareth Magennis"

trying to find equivalents for a Dual Diode T220F package (insulated
tab). Device is marked RF2001, but can't seem to find a datasheet.


** You did not look very hard - using " rf2001 diode " the pdf below is
the third hit.

It is NOT in fact a dual diode - dumbass.

http://www.rohm.com/products/databook/di/pdf/rf2001t4s.pdf



.... Phil
Click to expand...

Thanks Phil, don't know why I wasn't able to find that, I tried twice you
know, honest.



Actually these ARE dual diodes. On further Googling for the ROHM devices,
it turns out there are 3 different types: RF2001 T2D, T3D, and the T4S you
linked to here. The T2D and T3D are both dual devices, one the opposite
polarity of the other, and the T4S as we can see is a single diode.

(My devices are actually marked on the second line T2D, I thought this was
just a date code or something).



Cheers,


Gareth.
 
"Phil Allison" <phil_a@tpg.com.au> wrote in message
news:8ud0glFu9vU1@mid.individual.net...
"Gareth Magennis"

trying to find equivalents for a Dual Diode T220F package (insulated
tab). Device is marked RF2001, but can't seem to find a datasheet.


** You did not look very hard - using " rf2001 diode " the pdf below is
the third hit.

It is NOT in fact a dual diode - dumbass.

http://www.rohm.com/products/databook/di/pdf/rf2001t4s.pdf



.... Phil
Click to expand...

Oh, and I know you like to know these things, so this is the damn amp in
question:

http://www.markbass.it/product_detail.php?id=69



Gareth.
 
"Gareth Magennis"
Oh, and I know you like to know these things, so this is the damn amp in
question:

http://www.markbass.it/product_detail.php?id=69
Click to expand...

** Seen a few of these POS with regular iron PSUs.

Look like something built is a Bronx garage by frightened wet backs.

Awful.



..... Phil
 
It is NOT in fact a dual diode -- dumbass.

You are confusing the poster with a famous French writer.

** Somebody once made a bunch of money from a song
that declared: > " Pablo Picasso was not an asshole "
So, maybe there is a buck to be made from one that says:
" Alexandre Dumas was not a dumbass "

Wadaya think...??
Click to expand...
You got the joke. That's all I care about.
 
"William Sommerwanker"
It is NOT in fact a dual diode -- dumbass.

You are confusing the poster with a famous French writer.

** Somebody once made a bunch of money from a song
that declared:

" Pablo Picasso is not an asshole "

So, maybe there is a buck to be made from one that says:

" Alexandre Dumas was not a dumbass "

Wadaya think...??

You got the joke.
Click to expand...

** Shame it totally lacked any kind of humour.

And you are still a revolting pile of autistic, sub human shit.

God, I hope you die in screaming agony.



.... Phil
 
Wadaya think...??

You got the joke.

Shame it totally lacked any kind of humour.
Click to expand...
Isn't a lack of humour [sic] a form of humor in and of itself?


And you are still a revolting pile of autistic, sub-human
shit. God, I hope you die in screaming agony.
Click to expand...
Please -- I can't handle flattery.

If you saw and heard my magnificent AV system (KURO, Apogee, Curl) you would
not be so quick to criticize. You would be begging to visit.
 
"William Sommerwanker is aCunt "
** Shame it totally lacked any kind of humour.

And you are still a revolting pile of autistic, sub human shit.

God, I hope you die in screaming agony.




.... Phil
 
You must log in or register to reply here.

Welcome to EDABoard.com

Sponsor

Back
Top