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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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Switching Diode ID required
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. |
#2
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Switching Diode ID required
Gareth Magennis wrote in message
... 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. 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 |
#3
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Switching Diode ID required
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? 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 |
#4
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Switching Diode ID required
"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/databoo.../rf2001t4s.pdf ..... Phil |
#5
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Switching Diode ID required
It is NOT in fact a dual diode -- dumbass.
You are confusing the poster with a famous French writer. Two, actually -- pere et fils. |
#6
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Switching Diode ID required
"William Sommer******" 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 ?? .... Phil |
#7
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Switching Diode ID required
"Phil Allison" wrote in message ... "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/databoo.../rf2001t4s.pdf .... Phil 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. |
#8
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Switching Diode ID required
"Phil Allison" wrote in message ... "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/databoo.../rf2001t4s.pdf .... Phil 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. |
#9
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Switching Diode ID required
"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 ** Seen a few of these POS with regular iron PSUs. Look like something built is a Bronx garage by frightened wet backs. Awful. ..... Phil |
#10
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Switching Diode ID required
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...?? You got the joke. That's all I care about. |
#11
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Switching Diode ID required
"William Sommer******" 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. ** Shame it totally lacked any kind of humour. And you are still a revolting pile of autistic, sub human ****. God, I hope you die in screaming agony. .... Phil |
#12
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Switching Diode ID required
Wadaya think...??
You got the joke. Shame it totally lacked any kind of humour. 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 ****. God, I hope you die in screaming agony. 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. |
#13
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Switching Diode ID required
"William Sommer****** is a**** " ** Shame it totally lacked any kind of humour. And you are still a revolting pile of autistic, sub human ****. God, I hope you die in screaming agony. .... Phil |
#14
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Switching Diode ID required
Wit is the first thing to go...
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