説明

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38mm Thickened and Pressure-Boosting Design

– 50% thicker, larger fan blade area, and more than twice the air pressure of a standard 25mm fan, specifically designed to handle high impedance.

Industrial Dual Ball Bearings

– Withstands temperatures up to 80℃, supports 24/7 full-load operation, and has a lifespan of up to 50,000 hours.

Precise PWM Speed ​​Control, Powerful yet Controllable

– Provides intense cooling at full speed, automatically reduces speed at low temperatures, and remains quiet even at night.

Why Choose Us?

• Certifications: CE, RoHS, FCC certified, compliant with international export standards.
• Dropshipping: Supports small batch mixed orders and sample testing.
• OEM/ODM: Highly customizable wires, terminals, and coating colors to suit your equipment needs.

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Model	Bearing Type				Rated Voltage				Operating Voltage Range				Rated Current					Rated Input Power					Speed				Maximum Air Flow								Maximum Air Pressure							Noise				Weight
PART NO.	B/S/Y				VDC				VDC				AMP					WATT					R.P.M				m3/min				CFM				mmH2O			INH2O				DB-A				g
FH12038	S/Y/B				12				6.0 to 13.5				0.18					2.16					1500				1.370				48.30				1.97			0.078				31.8				200
					12				6.0 to 13.5				0.25					3.00					2000				1.903				67.20				3.45			0.136				38.8				200
					12				6.0 to 13.5				0.31					3.72					2500				2.365				83.50				5.50			0.217				43.8				200
					12				6.0 to 13.5				0.54					6.48					3100				2.920				103.12				6.59			0.259				46.6				200
					12				6.0 to 13.5				0.62					7.44					3400				3.033				107.13				8.12			0.319				49.6				200
					12				6.0 to 13.5				0.67					8.04					3500				3.458				122.10				9.55			0.352				49.0				200
					12				6.0 to 13.5				0.71					8.52					3700				3.657				129.18				9.63			0.379				51.4				200
					12				6.0 to 13.5				0.84					10.08					4000				3.785				139.60				10.55			0.415				53.8				200
					12				6.0 to 13.5				1.20					14.40					4500				4.409				155.73				13.73			0.54				57.2				200
					24				18.0 to 26.5				0.09					2.16					1500				1.370				48.30				1.97			0.078				31.8				200
					24				18.0 to 26.5				0.13					3.00					2000				1.903				67.20				3.45			0.136				38.8				200
					24				18.0 to 26.5				0.16					3.72					2500				2.365				83.50				5.50			0.217				43.8				200
					24				18.0 to 26.5				0.30					7.20					3100				2.920				103.12				6.59			0.259				46.6				200
					24				18.0 to 26.5				0.31					7.44					3400				3.033				107.13				8.12			0.319				49.6				200
					24				18.0 to 26.5				0.33					7.92					3500				3.458				122.10				9.55			0.352				49.0				200
					24				18.0 to 26.5				0.36					8.64					3700				3.657				129.18				9.63			0.379				51.4				200
					24				18.0 to 26.5				0.42					10.08					4000				3.785				139.60				10.55			0.415				53.8				200
					24				18.0 to 26.5				0.60					14.40					4500				4.409				155.73				13.73			0.54				57.2				200
					48				36.0 to54.0				0.04					1.92					1500				1.370				48.30				1.97			0.078				31.8				200
					48				36.0 to54.0				0.07					3.36					2000				1.903				67.20				3.45			0.136				38.8				200
					48				36.0 to54.0				0.10					4.80					2500				2.365				83.50				5.50			0.217				43.8				200
					48				36.0 to54.0				0.14					6.72					3100				2.920				103.12				6.59			0.259				46.6				200
					48				36.0 to54.0				0.16					7.68					3400				3.033				107.13				8.12			0.319				49.6				200
					48				36.0 to54.0				0.17					8.16					3500				3.458				122.10				9.55			0.352				49.0				200
					48				36.0 to54.0				0.19					9.12					3700				3.657				129.18				9.63			0.379				51.4				200
					48				36.0 to54.0				0.21					10.08					4000				3.785				139.60				10.55			0.415				53.8				200
					48				36.0 to54.0				0.30					14.40					4500				4.409				155.73				13.73			0.54				57.2				200
提示1:如果您需要的转速,电压,或者其它功能不在这清单上，请与我们联系. If you want another RPM,voltage or functions which one in the lise ,please contact our sales.
提示2:以上数据仅供参考,产品详细信息请参照承认书,如有变更恕不另行通知. Above specifcations are only for reference ,product have a detail in the approcal sheet, if specifaction are subject to change without notice.

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AI Liquid Cooling Application: High-Density RDHx and CDU High-Pressure Cooling

The FH120×38mm DC booster fan is the highest-static-pressure 120mm fan in the Fengheng portfolio, making it the optimal choice for demanding AI liquid cooling applications where standard-depth fans fall short.

When You Need 38mm Depth Instead of 25mm

The extra 13mm depth of the 38mm frame versus a standard 25mm fan provides significantly more blade swept volume, which translates to:

• ~40% higher static pressure at the same RPM — critical when RDHx fin coils have tight fin pitch (≥12 fins per inch)
• ~25% more airflow at 0.5 inH₂O system resistance — supporting rack densities above 80 kW
• Lower RPM at equivalent performance — reduces noise and dramatically extends bearing life in 24/7 AI data center operation

AI Data Center Application Scenarios

Scenario 1 — Ultra-High-Density RDHx (80–120 kW racks): Next-generation AI GPU racks deploying NVIDIA GB200 NVL72 or equivalent systems exceed 100 kW per rack. Active RDHx doors for these racks require 38mm-depth fans to achieve necessary airflow through high-resistance fin coils at manageable RPM.

Scenario 2 — CDU Primary Heat Exchanger Fans: Larger CDU units use plate-fin heat exchangers for air-side heat rejection. The 38mm blade provides sufficient static pressure to push air through these secondary heat exchangers without requiring multiple fan stages.

Scenario 3 — Edge AI Thermal Management: Sealed outdoor AI compute enclosures with internal heat exchangers benefit from 38mm fans that deliver effective heat transfer at lower RPM, reducing acoustic noise and bearing wear in field-deployed units.

Key Specifications

• Voltage: 12V DC (24V / 48V custom available)
• Current: 1.2A max | Power: 14.4W
• Speed: 4,500 RPM max (PWM controlled)
• Bearing: Dual ball bearing, MTBF ≥70,000h
• Certifications: CE, RoHS

Request Datasheet for AI Liquid Cooling Applications →