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Details about  NEW Sanyo Denki San Ace 12 Volt DC fan 109r1212h1011 w temp cntrl JAPAN 120 38mm

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NEW Sanyo Denki San Ace 12 Volt DC fan 109r1212h1011 w temp cntrl JAPAN 120 38mm
Item Sold
Item condition:
Jul 30, 2012 09:16:56 PDT
US $16.90
Will ship to United States. Read item description or contact seller for shipping options. | See details
Item location:
Los Angeles, United States


eBay item number:
Seller assumes all responsibility for this listing.
Last updated on  May 28, 2012 17:24:25 PDT  View all revisions

Item specifics

New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ... Read moreabout the condition

Sanyo Denki




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International Buyers – PLEASE READ:

  • This item will ship USPS Priority flat rate or USPS first class Intl. There is NO guaranteed arrival time. Shipping time varies from country to country and whether customs decides to inspect the package..
  • There is NO tracking for USPS flat rate or USPS First class. From the official USPS site: " You cannot track a flat rate envelope or small flat rate box."...."Letters or packages sent via First-Class Mail® service cannot be tracked" USPS FAQ
  • There IS a "Confirmation of Delivery #", which doesn't get updated until the buyer receives the package. That means that checking this # for USPS Priority flat rate items is 100% pointless.. Until the buyer receives the item, this # will show that USPS "has been notified of the shipping label" and nothing more..

If you don't understand or aren't willing to assume the risks associated with USPS shipping, please don't buy this item. Thank you.

I can ship up to FOUR of these fans for the $5.95 (domestic) or $16.95 (Int). So if you buy 2 - 4 fans, please click on "request total from seller" for a combined shipping amount.. This means that if you buy 5 or more fans, I will have to charge you for two or more shipments..... Feel free to contact me with any questions.. Thanks.

Feedback recieved for this item:

"Seller is an excellent communicator, fabulous product and overall service A+++++"
"Look to deal with the seller again, fabulous service, one of the best!"
"Very fast shipping. Great product. moves a lot of air without being too loud."
"Arrived fast and works very well. Very good seller. Highly recommended. A++"
"I'm Happy! Pretty silent fan at low temp. Fast and inexpensive shipping."
" Fan was delivered faster than expected, securely packed and working perfectly!"
"Fast shipment WOW!! Great deal! Lucky I am! :-)"
"Excellent service, perfect item, fast shipping. Highly recommended seller"
"Thank you, received as described."
"Excellent seller thanks!!"

Loot Lowdown-

Brand new, fresh out of the factory box, genuine Sanyo Denki San Ace 12 Volt 120 x 38mm H speed fan, terminated with 3 pin connector....

This is the famous 109R1212H1011 model with automatic speed control.. "quite rare and hard to find, its Sanyo Ace 109R1212T1H142 , automatic thermal controlled speed based on ambient temp."


An on-board thermistor that adjusts the fans speed when the surrounding air is in between 30 and 40C..  These fans were made to cool high end Intel/ HP Servers.. 

When running on 12V, they start out at 1,300 RPM.. When running on 5V, they start out at 900 RPM



If you don't know about these fans, do a google search for "109R1212H4011".. Quite possibly the most in demand 120mm fan ever made.. Why? A combination of Unmatched static pressure, low noise and overall quality..

XS Fan Review by Vapor

I'll spoil one result for all of you upfront: the Sanyo Denki San Ace 1011 is king of the hill. And by hill I mean universe. It's really, really good. In addition to its insane empirical results (see below), it makes NO extraneous noises and undervolts like a champ. I have five and they all perform like this and they all start at 4V or lower. They could kick Chuck Norris's ass....silently.

They're ball bearings as well, so you don't have to worry about the sleeve bearing inconvenience. They also perform past their listed specs--something that's exceedingly rare in these SilenX days. Good luck finding any though...and when you do, they're $25 a pop. I also really like Sanyo Denki's Eneloop batteries (hey, I said "stuff" in the title, that implies plurality).

Fan Mini Review by Vapor

The way I see it in this grouping....there's the San Ace and then the other three. The noise they make is incomparable--the only reason the San Ace is even in this group is because it moves the same amount of air as them. I don't know how it does it, but I wish more fans did. That said, it's impossible to find, going for nearly $30 a pop when shipped, and they're fragile (I've broken 3...anything touching a spinning blade will break it off). It's in a class of their own, like a Tiger Woods of fans.

Sanyo Denki no longer makes these and from various reports, the newer 9G series isn't as good as the 109Rs.. I'm not sure exactly why, but it could have to do with the superior quality control of the Japanese Sanyo Denki factory.. The fans in this listing were 100% MADE IN JAPAN.. The 9G series are now mostly produced in the Philippines to save $.

Typically these fans come bare wire, but but buy them here and you'll get them ready to go with a black 3 pin Molex connector.. The yellow wire is a Tach RPM sensor.  The wires measure approximately 8 inches from the fan.

Get em while they last..

Loot Features-

-Unmatched Static pressure in the 120 x 38mm class

Unmatched overall quality (construction and materials)

-Unmatched voltage scalability (starts @ 4.5V and ends?? - at least 32V -see below)

Loot Specs-


Model No.


Operating voltage range

4.5 to 13.8*

Rated current (<28C)/(35C<)

0.23 / 0.48 A

Rotating speed (<28C)/(35C<)

1,300 / 2,800 RPM

Air flow (<28C)/(35C<)

49.4 / 102.4 CFM

Static pressure (<28C)/(35C<)

16.2 pa (0.065" H20) / 64.7 pa (0.260" H20)

Noise (<28C)/(35C<)

24 / 39 db(A)


120mm x 120mm x 38mm

Bearing Type

Dual Ball Bearing

Sensor wire


Sensor type


Storage Temperature

-30ºC to +60ºC

Operating Temperature

-10ºC to +60ºC

Impeller & Frame material

Fiberglass-reinforced plastic (Flammability: UL94V-1)

Motor protection system

Current cut system (with reverse-connection protection)

RoHS Compliant


 *Confirmed operational @ 4.5V Also confirmed operational @ 32V.. The fan was run for several minutes and although the impeller had warmed up, there was no damage done to the fan.. Most other fans would start smoking @ 18V... Why stop @ 32V?. Because the power supply that was used for testing was a 32V supply.. And yes, @ 32V this fan pushes air like nobody's business... I do not recommend running this fan @ voltages higher than 13.8V..


 Q: So at temps above 40C, this fan is identical to the 109R1212H1011, right?

Q: Can I use these with a fan controller?
A: YES!.. The on board thermal control will still work.. With a fan controller, you would be able to adjust the range of the fans speed..

Q: Why can't I find any info on this particular part #?..
A: Because the part # is OEM specific.. This model was custom made for Intel/HP.. It is a 109R1212T1H122 that is terminated with a AMP connector at the SD factory.. A "true" 109R1212T1H122 comes with bare wires from the factory.. In fact, any Sanyo Denki fan with a part # that you can find in their catalog comes from the factory with bare wires... Connectors are available, but the part # will change.. In this case, the custom connector changed the part # from 109R..22 to 109R..42

Q:Will voltages lower than the startup voltage damage these fans?
A: NO! Sanyo Denki fans have advanced built in protection to cut off current when applied voltage is insufficient to start the fan.. (this is what all those components(resistors, capacitors, etc) on the Denki's PCB are for).. Notice the $2 fan has little, if any advanced circuitry

To test this feature, I connected a SD fan to a bench power supply.. Sure enough @ really low voltages (EG 2V) , the current is completely cut off( bench supply shows 0.00 amps)...

Then I tested a yate loon (Made in China, cheap and relatively quiet.. popular among PC builders)... As I suspected, no protection function with the Yate.. The Amps never went to 0.00.. So @ voltages lower than startup, there is still current flowing through the fan even though the fan isn't moving.. IE they will burn up if left that way...

Additional Information:



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