Hi, I’m trying to find a replacement for this fan. It’s a high speed fan running in a SureStar TC-400 power supply module.
Thank you!
@aklap
I found the 259-1796-ND in our system as a possible alternative.
HI Nathan. That’s a 10mm thickness fan. Is there a 20mm model?
259-1800-ND is an option for the 20mm thickness.
Excellent! I think that might work. I’m guessing the fan does not have any connector attached, correct? For bonus points - in the MAGLEV models MS.A.GN - I see .AF. versions - A is auto restart. What’s the F designate?
Thank you!
I’m looking at the power specs. The old fan has Current rating of .12 AMP the replacement fan is 80 mA with 92mA max.
The old is 1.4w and the replacement is 1.06w
Will that be a problem?
Thank you!
It should not be an issue. The fan will just draw less power to do the same overall work.
Neither I listed would have a connector.
As for the AF you are looking at. So far I did not see a part number breakdown that lists out that section of the item numbering.
With the above said though.
The below link shows the .A. and.AF. on the same web-page results. which shows that the difference would be that the .AF. would be a 3 wire item. With the 3rd wire providing a speed senor output.
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That’s what I suspected, but I’m not an electronics genius. I don’t need to be blowing up this power supply.
Looking at the spec sheet in closer detail, the drawing showed just the wires.
I wasn’t able to find any documentation on the F designation either - thank you for looking and for your help!
I’ll pass your selection on to our purchasing agent to get some of these on their way.
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Ahhh, F for Speed Sensor - makes sense LOL. Thanks again!
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Hi aklap,
You are right to be concerned with the difference in power and current rating between your fan and the recommended replacement. If the replacement were underrated, that might imply insufficient cooling of your power supply.
However, looking at a datasheet I found for your KDE1204PKVX, it states that the air delivery is 10.8 CFM (cubic feet per minute) and the static pressure rating (basically, how hard it pushes against back-pressure) is 0.27 Inches H2O for that part.
The MF40201VX-1000U-A99 that @Nathan_2268 suggested is rated for the same 10.8 CFM and a slightly higher static pressure rating of 0.29 Inches H2O, despite using less power. Those two specs are the most important from a “cooling effectiveness” perspective, so the MF40201VX-1000U-A99 does as good a job and uses less than 80% of the power in doing so.
Therefore, the MF40201VX-1000U-A99 that @Nathan_2268 suggested looks like an ideal solution.
Hi @David_1528
Thank you for weighing on this! I had the spec sheet for the KDE fan and compared it to Nathan’s fan. I noticed RPM was bit slower on the MF401VX (8000 vs 8200 but the CFM figures were identical - so I figured the cooling effectiveness would be acceptable. I didn’t look at the static pressure - which would’ve been helpful piece to the puzzle.
I have the fans, now I can get them replaced!
Thank you again David and Nathan!
Al