Technical Specifications

Key Features

Applications

• Compact industrial electronics forced-air cooling
• High-density electronic equipment ventilation
• Industrial controller thermal management
• Compact switching power supply cooling
• Network and telecommunications equipment ventilation
• Small electronic enclosures requiring high static pressure
• Embedded computing and processor cooling assemblies
• Replacement of compatible 40 mm 12 VDC high-speed axial fans

Purchase Information

We support online purchase of the SUNON SG40281B1-0000-G99 fan. If you need to make bulk purchases and inquire about other products, please contact our team to inform us of your purchase requirements. We will provide you with information such as quantity quotations, delivery dates, and transportation methods.

Frequently Asked Questions

What is SUNON SG40281B1-0000-G99?
SG40281B1-0000-G99 is a SUNON Super Green series DC brushless axial cooling fan featuring a nominal 40 x 40 x 28 mm housing, 12 VDC rated supply and dual ball bearing system.

What is the rated voltage of SG40281B1-0000-G99?
The exact-model Farnell listing specifies 12 VDC. A separate manufacturer operating voltage range for the complete 0000-G99 configuration was not independently verified.

What are the dimensions of SG40281B1-0000-G99?
The nominal dimensions are 40 x 40 x 28 mm. Manufacturer SG40281 series drawings specify 40 ±0.5 mm frame width and height, 28 mm nominal depth and 32 ±0.3 mm mounting-hole spacing.

What is the rated current?
Farnell specifies 520 mA, equivalent to 0.520 A, for the complete SG40281B1-0000-G99 model.

What is the power consumption?
The documented rated power consumption is 6.24 W at 12 VDC. This value is supported by the exact G99 listing and SUNON's SG40281B1 series catalog data.

What is the rated fan speed?
The rated speed is 19000 RPM, according to the exact-model Farnell listing and the manufacturer SG40281B1 performance table.

What airflow does SG40281B1-0000-G99 provide?
The published airflow rating is 25.6 CFM, equivalent to approximately 43.5 m³/h, under the applicable test conditions.

What is the maximum static pressure?
The documented maximum static pressure is 1.45 inH2O, approximately 361.2 Pa. The available airflow at a particular operating point depends on system resistance.

What bearing system does SG40281B1-0000-G99 use?
The exact-model product listing specifies precision dual ball bearings, consistent with SUNON's SG40281B1 manufacturer catalog configuration.

What is the acoustical noise level?
The published noise rating is 58.5 dB(A). Actual installed noise may vary with airflow restrictions, equipment enclosure design, mounting conditions and operating voltage.

How is SG40281B1-0000-G99 electrically connected?
Farnell identifies three wire leads, automatic restart and an F-type third-wire function, while its connection field also references locked-rotor indication. Verify the actual third-wire signal behavior, wire colors, connector and electrical pinout before integration. Do not assume the G99 configuration has a dedicated PWM control input.

What should be checked before ordering SG40281B1-0000-G99?
Confirm the complete SUNON model number, 12 VDC supply, 0.520 A rated current, 6.24 W power consumption, 40 x 40 x 28 mm dimensions, 32 mm mounting-hole spacing, precision dual ball bearing, three-wire connection, third-wire signal function, connector termination, airflow direction and required cooling performance. SG40281B2-0000-A99 and SG40281B3-0000-A99 have different speed and airflow ratings. SG40281B1-000U-G99 is a related but differently coded configuration. Confirm interchangeability before substitution. Farnell identifies SG40281B1-0000-G99 as no longer manufactured, so the part number and available replacement specifications should be reviewed carefully.