SUNON fans specifications

thingiverse

I was searching for a replacement fan for my CR-10s and came across the big variety of models available on Chinese sites. There's little info available there, so I collected datasheets from inet and made a summary here. I'd definitely favor the quite models, like HA model and KDE - PKS3 models in 40x40x20 and 40x40x10 configurations. Be aware that rpm, flow capacity, and noise are directly related to each other in a way that higher flow per minute requires higher rpm and produces more noise. Also, the flow is directly proportional to fan diameter, as bigger fans produce more flow at lower rpm and lower noise levels. The flow produced per rpm increase isn't linear, as the fan quickly loses efficiency, so two-fold louder fans produce less than two-fold airflow. Be aware that noise is measured in dB, so a 3dB difference is double the noise level - for example, a fan producing 21dB is twice as noisy as a fan producing 18dB. Use whispering at a distance of 1.5m as a reference level; it produces around 20dB. I'm publishing this info with the hope that it will be useful. I'm not directly related to SUNON or any other brand, nor am I directly related to any Chinese shop or other shop in any way. A very good fan cover for 40mm can be found here (also included the file in my thing); be aware that printing time may be high (4pcs printed from ABS = ~6h) and it needs supports: https://www.thingiverse.com/thing:3454477 Links: https://www.aliexpress.com/wholesale?catId=0&initiative_id=SB_20190925113203&origin=y&SearchText=HA40201V4&switch_new_app=y https://www.aliexpress.com/wholesale?catId=0&initiative_id=SB_20190925113302&origin=y&SearchText=HA40101V4&switch_new_app=y http://www.sunon.com/uFiles/file/03_products/08-catalog%20download/Sunon%20DC%20Brushless%20Fan%20&%20Blower_(240-E).pdf https://www.jameco.com/Jameco/Products/ProdDS/195899.pdf