120x120x25mm DC Axial Fan DC1225
Five rated speed choices in a 25mm-deep, 120mm square frame, for equipment that needs a precisely matched fan replacement or a new ventilation opening.
DC1225 provides a practical 120×120×25mm installation format with 13 ordering models across 5V, 12V, 18V, 24V and 48V supply families. At the highest listed grade, airflow reaches 106.36CFM with a maximum static pressure of 5.75mmH₂O.
Rated Voltage: 5V / 12V / 18V / 24V / 48V
Size: 120×120×25mm
Max Airflow: 106.36CFM
Max Static Pressure: 5.75mmH₂O
Max Speed: 3,000RPM
DC1225 Electrical Ratings and Model Options
DC1225 offers 13 ordering models, but availability differs by rated voltage. The 5V family includes 1,500, 1,800 and 2,000RPM configurations; 24V models are specified at 2,000 and 3,000RPM. Compare the exact ordering code, current draw and P-Q characteristics instead of treating the full range as interchangeable speed settings.
| Model | Bearing Type | Rate Voltage（VDC） | Current （A） | Speed （RPM） | Air Flow （CFM） | Static Pressure （mmH₂O） | Noise Level （dBA） |
|---|---|---|---|---|---|---|---|
| YDH1225X05 | C/S/B | 5 | 0.30 | 2000 | 69.74 | 2.47 | 35.00 |
| YDM1225X05 | C/S/B | 5 | 0.22 | 1800 | 62.77 | 2.00 | 32.00 |
| YDL1225X05 | C/S/B | 5 | 0.12 | 1500 | 52.31 | 1.39 | 28.00 |
| YDH1225X12 | C/S/B | 12 | 0.27 | 2500 | 87.18 | 3.86 | 39.00 |
| YDM1225X12 | C/S/B | 12 | 0.11 | 2000 | 69.74 | 2.47 | 35.00 |
| YDL1225X12 | C/S/B | 12 | 0.06 | 1500 | 52.31 | 1.39 | 28.00 |
| YDH1225X18 | C/S/B | 18 | 0.18 | 2500 | 87.18 | 3.86 | 39.00 |
| YDM1225X18 | C/S/B | 18 | 0.07 | 2000 | 69.74 | 2.47 | 35.00 |
| YDL1225X18 | C/S/B | 18 | 0.04 | 1500 | 52.31 | 1.39 | 28.00 |
| YDM1225X24 | C/S/B | 24 | 0.20 | 3000 | 106.36 | 5.75 | 47.00 |
| YDL1225X24 | C/S/B | 24 | 0.11 | 2000 | 69.74 | 2.47 | 35.00 |
| YDM1225X48 | C/S/B | 48 | 0.12 | 3000 | 106.36 | 5.75 | 47.00 |
| YDL1225X48 | C/S/B | 48 | 0.08 | 2000 | 69.74 | 2.47 | 35.00 |
Bearing codes C, S and B denote CycleSeal, sleeve and ball-bearing options; confirm the ordered configuration rather than assuming every ordering code carries all three.
Construction: glass-fiber-reinforced plastic impeller and housing in PBT, UL 94V-0 material rating. Ball and CycleSeal bearing operating temperature: -10°C to +70°C. Insulation resistance: at least 10MΩ at 500VDC between frame and terminal. Dielectric strength test: 500VAC, 60Hz for one minute, with leakage current no greater than 5mA. FG, RD, PWM, automatic restart and polarity protection are available as function options and must be specified for the ordered configuration.
Configuration Advantages for Standard 120mm Fan Installations
Standard mounting dimensions simplify the mechanical search, but electrical loading, usable airflow and actual fit still determine whether a fan is suitable. These four characteristics help narrow the selection to a specific DC1225 ordering code.
Five Rated Speeds for Different Ventilation Targets
From 1,500RPM to 3,000RPM, the selected versions provide rated free-air airflow from 52.31 to 106.36CFM. A lower rated speed can be considered for modest heat loads, while higher-output versions may suit systems with greater ventilation demand. Each grade has its own model code and noise rating.
Flexible 5V to 48V Electrical Matching
Power-platform compatibility comes from ordering the correct version, not switching the supply voltage of one fan. DC1225 has 5V, 12V, 18V, 24V and 48V families, giving OEM engineers several ways to match an existing control board or dedicated DC supply.
25mm Body with Defined Mounting Geometry
The 120mm square frame and 25mm body allow designers to check clearance against the enclosure drawing before arranging intake or exhaust. For replacements, verify the mounting-hole spacing, screw access, wiring route and airflow direction rather than relying on the nominal outer size alone.
Optional Monitoring for Controller Integration
Where the host needs a fan-running or fault indication, FG or RD functions can be discussed with YCCFAN for the selected configuration. PWM is also an available option, but its control pinout and operating behavior need confirmation before an OEM design uses it.
YCCFAN DC1225 Installation and Electrical Integration
Mechanical clearance and electrical compatibility determine whether a standard-size fan will work in an existing assembly.
A 120×120mm mounting opening provides the starting dimensions, not a guarantee of fit. The 25mm body, hole spacing, nearby components, fastener access and cable exit must be checked against the enclosure drawing. For a retrofit, the original connector shape is not sufficient evidence that its pin arrangement or feedback signals match.
Once the mechanical layout is confirmed, select among the 13 DC1225 codes by supply voltage, current and the airflow required at the system operating point. The standard version has a different rated-performance range from DC1225F and DC1225G; their shared 120×120×25mm frame does not make the three versions electrically or aerodynamically interchangeable.
Five Speed Curves for Airflow and Static Pressure
The five curves help estimate which ordered speed grade can deliver sufficient airflow once the enclosure introduces resistance. At 3,000RPM, 106.36CFM is the free-air endpoint and 5.75mmH₂O is the maximum shut-off pressure endpoint; these figures are not achieved together at one working point. The appropriate operating point depends on the resistance of the complete airflow path.
Standard Equipment Ventilation and Fan Integration Applications
These examples focus on practical installation tasks rather than repeating generic industry categories. A suitable DC1225 configuration depends on the available fan bay, voltage supply, inlet and outlet path, and the required operating airflow.
Get Cooling Support
Standard 120mm Equipment Fan Positions
A machine housing with a designated 120mm mounting position can use a DC1225 configuration when its 25mm body depth, fastening points and airflow orientation match the assembly. Existing installations also require a check of the connector pinout and rated current; dimensions alone do not establish replacement compatibility.
Electronic Equipment Air Exchange
In an electronics enclosure, a planned inlet-to-outlet route helps move heated air away from occupied board areas. The selected fan grade should be evaluated against vent openings, cable obstructions and other sources of pressure loss rather than relying on its free-air CFM value alone.
Voltage-Specific Power Modules
Power conversion assemblies do not all use the same fan supply. Separate 5V, 12V, 18V, 24V and 48V DC1225 ordering families let designers match a specified electrical bus, subject to suitable current capacity and cooling requirements. A version intended for one rated voltage must not be treated as a universal multi-voltage fan.
Ventilation Openings and Grille Arrangements
Protective grilles, narrow exhaust slots and nearby panels can change the resistance seen by the fan. For a DC1225 used at an outlet opening, compare the required through-flow with its P-Q curve and confirm the intended airflow direction; the 106.36CFM free-air maximum is not an installed-flow guarantee.
OEM Fan Wiring and Configuration Matching
During equipment development, specify wire exit direction, cable length, connector assignment and any required feedback together with the DC1225 ordering model. FG, RD and PWM are optional configurations, so the host controller interface must be agreed before production rather than inferred from the fan housing or connector appearance.
120x120x25mm Fan Dimensions and Operating Demonstration
Inspect the original DC1225 model label, outer dimensions, airflow direction and electrical connector before choosing a variant.
Show the original DC1225 model label, outer dimensions, airflow direction and electrical connector before demonstrating operation. Where several rated speeds are presented, identify the specific ordering model for every shot instead of implying that one fan switches between all five speed grades.
Recorded demonstrations should present the actual installed depth, mounting-hole drawing and connector orientation so that engineers can confirm mechanical and electrical fit before sampling. Contact YCCFAN for sample requests or the latest test footage of the DC1225 series.
Fan Wiring, Rated Speed and Replacement FAQs
A: No. Matching nominal size is only the first step. Check the hole pattern, actual 25mm clearance, rated supply voltage, current, connector and airflow direction. If the host expects FG or RD feedback, the replacement must have the correct configured signal.
A: Check the rated voltage and use the appropriate P-Q curve for the required system airflow. The 2,000RPM version has 69.74CFM free-air airflow, 2.47mmH₂O maximum static pressure and 35.00dBA; the 3,000RPM version reaches 106.36CFM, 5.75mmH₂O and 47.00dBA. These ratings apply to different ordering models.
A: Not necessarily. A connector can look the same while its pinout, voltage or feedback signals differ. Confirm power polarity, rated current and any FG, RD or PWM interface with the host equipment before installation.
A: No. The 1,500, 1,800, 2,000, 2,500 and 3,000RPM figures identify distinct rated configurations. PWM is an optional feature, and any supported control range must be confirmed for the selected model rather than inferred from the different rated-speed versions.
A: No. A DC1225 model must match its rated DC supply. Separate 12V and 24V ordering codes are available, but their operating voltage is not interchangeable. Also check the current requirements and startup behavior of the connected equipment.
A: Provide the original fan model or mechanical drawing, required DC supply, available depth, target airflow, operating conditions, connector and cable specifications, and any FG, RD or PWM signal requirements. This information is needed to identify a compatible ordering version.
Can't Find the Perfect Fan?
We offer customization services from wire length to full mold design. Get a solution in 48 hours.
Request a DC1225 Sample or Custom Solution