Fans
Fans YY4020H12B 4020 case fan 40mm 12V 0.20A double ball bearing
40 mm square case fan with 12 V supply and double ball bearing
- Double ball bearing extends operational life
- 12 V 0.20 A draws minimal power
- 40 mm frame fits tight 4020 mounting holes
- 20 mm thickness suits slim chassis builds
Compact 40 mm cooling
The Fans YY4020H12B is a 40 mm square case fan built for tight spaces in small-form-factor PCs and industrial enclosures. It runs on 12 V and draws 0.20 A, using a double ball bearing for durable operation. Dimensions are 40 by 40 by 20 mm.
Replaces noisy sleeve-bearing 40 mm fans
Swap this in when an original 4020 fan becomes loud or fails after extended use. The double ball bearing resists wear better than sleeve designs, making the upgrade worthwhile for systems that run continuously or in warm environments. It is not suited for builds needing higher airflow than a 40 mm frame can deliver.
Highlights
- Double ball bearing extends operational life
- 12 V 0.20 A draws minimal power
- 40 mm frame fits tight 4020 mounting holes
- 20 mm thickness suits slim chassis builds
Specifications
No published specifications for this item yet.
Questions about this item
Will the 40 mm by 40 mm frame with 20 mm depth fit my existing 4020 mounting holes?
The fan body is 40 mm square and 20 mm thick, matching the standard 4020 form factor used in many small-form-factor cases and heatsinks.
What is the correct way to wire the 12 V 0.20 A leads, and what mistake should I avoid?
Connect the red wire to 12 V and the black wire to ground; reversing them will prevent the double ball bearing motor from spinning.
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