http://www.chemi-con.co.jp/e/catalog/pdf/al-e/al-all-e1001m-130101.pdf
scroll to technical notes selecting input filter for smps for the proper serie
Like I said before
I can order parts only from FARNEEL
I canIf you cannot afford the ones I showed you (I used them)you might as whell leave the original ones inplace.
Today I checked it 40 per unit
The problem I have is found a solution how to order them from the site you sent me bro
part list for the psu mod
VISHAY SEMICONDUCTOR -VS-ETX0806FP-M3 -DIODE, HFAST RECT, 600V, 8A, TO220FP
RUBYCON -400KXW100MEFC16X30- CAPACITOR, 100UF, 400V
RUBYCON -50RX3010M8X11.5 -CAPACITOR, 10UF, 50V
RUBYCON -25ZLK470M8X20 -CAPACITOR, RADIAL, 25V, 470UF
RUBYCON -10ZL2200MEFC12.5X20- CAPACITOR, 2200UF, 10V
RUBYCON -35ZLG150MEFC8X11.5 -CAPACITOR, 150UF, 35V
RUBYCON -10ZLJ330M6.3X11 -CAPACITOR, RADIAL, 10V, 330UF
RUBYCON-16ZLH220MEFC6.3X11 -CAPACITOR, 220UF, 16V
Ultra Wide Bandwidth Regulators
DX7805 5.0V UWB regulator
DX7805 5.0V UWB regulator
DX7809 9.0V UWB regulator
DX7909 -9V Negative UWB regulator
VISHAY SEMICONDUCTOR -VS-ETX0806FP-M3 -DIODE, HFAST RECT, 600V, 8A, TO220FP
RUBYCON -400KXW100MEFC16X30- CAPACITOR, 100UF, 400V
RUBYCON -50RX3010M8X11.5 -CAPACITOR, 10UF, 50V
RUBYCON -25ZLK470M8X20 -CAPACITOR, RADIAL, 25V, 470UF
RUBYCON -10ZL2200MEFC12.5X20- CAPACITOR, 2200UF, 10V
RUBYCON -35ZLG150MEFC8X11.5 -CAPACITOR, 150UF, 35V
RUBYCON -10ZLJ330M6.3X11 -CAPACITOR, RADIAL, 10V, 330UF
RUBYCON-16ZLH220MEFC6.3X11 -CAPACITOR, 220UF, 16V
Ultra Wide Bandwidth Regulators
DX7805 5.0V UWB regulator
DX7805 5.0V UWB regulator
DX7809 9.0V UWB regulator
DX7909 -9V Negative UWB regulator
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i wont to change the 2 schottky diode
d-908
d-910
DIODE FMBG19L (90V/4A)
in the smps
to
CREE - C3D04065A - DIODE, SCHOTTKY, 4A, 650V, TO-220
It's Worth It ??
This specification of the diode -CREE - C3D04065A
650-Volt Schottky Rectifier
Optimized for PFC Boost Diode Application
Zero Reverse Recovery Current
Zero Forward Recovery Voltage
High-Frequency Operation
Temperature-Independent Switching Behavior
Extremely Fast Switching
Positive Temperature Coefficient on -Vf
Replace Bipolar with Unipolar Rectifiers
Essentially No Switching Losses
Higher Efficiency
Reduction of Heat Sink Requirements
Parallel Devices Without Thermal
Runaway Switch Mode Power Supplies
Power Factor Correction
-
Typical PFC P out 400W-600W
d-908
d-910
DIODE FMBG19L (90V/4A)
in the smps
to
CREE - C3D04065A - DIODE, SCHOTTKY, 4A, 650V, TO-220
It's Worth It ??
This specification of the diode -CREE - C3D04065A
650-Volt Schottky Rectifier
Optimized for PFC Boost Diode Application
Zero Reverse Recovery Current
Zero Forward Recovery Voltage
High-Frequency Operation
Temperature-Independent Switching Behavior
Extremely Fast Switching
Positive Temperature Coefficient on -Vf
Replace Bipolar with Unipolar Rectifiers
Essentially No Switching Losses
Higher Efficiency
Reduction of Heat Sink Requirements
Parallel Devices Without Thermal
Runaway Switch Mode Power Supplies
Power Factor Correction
-
Typical PFC P out 400W-600W
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Now you complicating MeTry to determain the ringing and calculate a snubber (RC) over the diode.
How do I calculate it
LOL
The calculations I left
A few years ago I graduated electronics
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So what I understand from your advicesorry, you have to measure the ringing and counteract it with a snubber. If you have a scope it can be done with some trail and error. Cant't help you with that. Maybe somebody did it already???
It is common that there is a snubber over that diode.
Not replace the two switching diodes
Although they are a lot better than what the Chinese have diodes in SMPS Now
DudeThose two diodes are parrallel in one! package, the cree is only one diode. You don't have room for two.
Two diodes in the PSU are single
G19L (90V/4A)
I marked yellow arrow in the photo
But if I have to get involved with the calculations of ringing and calculate a snubber and changing the original values of the SMPS
I not replacing the diodes
Attachments
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I did not Understand you brosorry, i was talking about d907.
Schottky are not bad, if cree is better je ne sais pas
So I can replace the diodes to Cree
Without changing other values ןin the smps circuit ?
So just general knowledgeyes, i doubt it wil make any difference
Why did you say first
I need to measure the values of the snubber ?
even with the best diode there is alway some kind of ringing left. Which you can remove with a snubber
I know that there are those planning electric circuits
That the result of the snubber
Ring circuits
And switching that is out of control
Determined by the diode they choose
But you scared me yesterday that if I change the diode it can make a ring
p.m
Sorry I do not know how to explain it in English Dude
Already bought all the parts for the mod of the SMPS
I will get them a few more days
The diodes of the CREE has been ordered
I just want to be sure that no harm will put them and Replace the existing
I came across an interesting articleOn the diode Cree Z-Rec
Cree Z-Rec diodes feature zero reverse recovery, resulting in up to a
50% reduction in switching losses versus comparable silicon diodes. They also exhibit consistent switching performance across their entire temperature range, which simplifies circuit design and reduces the need for complex thermal management. When used in conjunction with Cree’s recently-introduced 1200V SiC power MOSFETs, these SiC Schottky diodes enable the implementation of all-SiC power electronic circuits with the capability to operate at up to four times higher switching frequencies when compared to conventional silicon diodes and IGBTs. This enables a reduction in the size, complexity and cost of inverter circuitry, while achieving extremely high system efficiency. Finally, this new family has the additional benefits of higher surge ratings and avalanche capabilities than the previous generation of SiC Schottky diodes, which increases overall system reliability.
These devices are ideal as boost diodes and anti-parallel diodes in solar inverters and 3-phase motor drive circuits, as well as in PFC boost circuits in power supplies and UPS equipment. They can also be used in applications where engineers typically parallel many devices to address higher power requirements.
Devices now released are rated for 2A, 5A, 10A, 20A and 40A. Dependent on current ratings, the parts are available in standard or fully-isolated TO-220 and standard TO-247 packages.
Cree Z-Rec diodes feature zero reverse recovery, resulting in up to a
50% reduction in switching losses versus comparable silicon diodes. They also exhibit consistent switching performance across their entire temperature range, which simplifies circuit design and reduces the need for complex thermal management. When used in conjunction with Cree’s recently-introduced 1200V SiC power MOSFETs, these SiC Schottky diodes enable the implementation of all-SiC power electronic circuits with the capability to operate at up to four times higher switching frequencies when compared to conventional silicon diodes and IGBTs. This enables a reduction in the size, complexity and cost of inverter circuitry, while achieving extremely high system efficiency. Finally, this new family has the additional benefits of higher surge ratings and avalanche capabilities than the previous generation of SiC Schottky diodes, which increases overall system reliability.
These devices are ideal as boost diodes and anti-parallel diodes in solar inverters and 3-phase motor drive circuits, as well as in PFC boost circuits in power supplies and UPS equipment. They can also be used in applications where engineers typically parallel many devices to address higher power requirements.
Devices now released are rated for 2A, 5A, 10A, 20A and 40A. Dependent on current ratings, the parts are available in standard or fully-isolated TO-220 and standard TO-247 packages.
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