DC Centrifugal Fan
MFL17569
Ø 175 x 69 mm
Airflow
161.3~382.75 CFM
Speed
1500~3600 RPM
Noise
41.8~65.8 dB(A)
Product Specifications
| Size | Ø 175 x 69 mm |
| Motor | Brushless DC |
| Voltage | 12V / 24V / 48V DC |
| Frame | plastic PBT UL94V-0 |
| Bearing Type | Ball Bearing / Sleeve Bearing |
| Operating Temperature | Ball Bearing: -10 ~ 70°C / Sleeve Bearing: 0 ~ 60°C |
| Life Expectancy | Ball Bearing: 50,000 hours at 25°C / Sleeve Bearing: 30,000 hours at 25°C |
Part Number & Specifications
| Model | Rated Voltage (V) | Operating Voltage Range (V) | Rated Current (A) | Input Power (W) | Speed (RPM) | Airflow (CFM) | Pressure (mmH₂O) | Noise (dB-A) |
|---|---|---|---|---|---|---|---|---|
| MFL17569D1-LB | 12 | 7 ~ 13.8 | 1 | 12 | 1500 | 161.3 | 9.87 | 41.8 |
| MFL17569D1-MB | 12 | 7 ~ 13.8 | 1.3 | 15.6 | 2000 | 216.64 | 17.35 | 51.2 |
| MFL17569D1-HB | 12 | 7 ~ 13.8 | 2.5 | 30 | 2500 | 266.35 | 26.6 | 57.2 |
| MFL17569D1-HHB | 12 | 7 ~ 13.8 | 4 | 48 | 3000 | 327.6 | 38.95 | 61.2 |
| MFL17569D1-VHB | 12 | 7 ~ 13.8 | 4.5 | 54 | 3300 | 345.68 | 45.28 | 64.1 |
| MFL17569D1-HVB | 12 | 7 ~ 13.8 | 5 | 60 | 3600 | 382.75 | 53.8 | 65.8 |
| MFL17569D2-LB | 24 | 18 ~ 26.5 | 0.5 | 12 | 1500 | 161.3 | 9.87 | 41.8 |
| MFL17569D2-MB | 24 | 18 ~ 26.5 | 0.64 | 15.36 | 2000 | 216.64 | 17.35 | 51.2 |
| MFL17569D2-HB | 24 | 18 ~ 26.5 | 1.05 | 25.2 | 2500 | 266.35 | 26.6 | 57.2 |
| MFL17569D2-HHB | 24 | 18 ~ 26.5 | 1.7 | 40.8 | 3000 | 327.6 | 38.95 | 61.2 |
| MFL17569D2-VHB | 24 | 18 ~ 26.5 | 2.2 | 52 | 3300 | 345.68 | 45.28 | 64.1 |
| MFL17569D2-HVB | 24 | 18 ~ 26.5 | 2.7 | 64.8 | 3600 | 382.75 | 53.8 | 65.8 |
| MFL17569D4-LB | 48 | 36 ~ 54 | 0.25 | 12 | 1500 | 161.3 | 9.87 | 41.8 |
| MFL17569D4-MB | 48 | 36 ~ 54 | 0.5 | 24 | 2000 | 216.64 | 17.35 | 51.2 |
| MFL17569D4-HB | 48 | 36 ~ 54 | 0.75 | 36 | 2500 | 266.35 | 26.6 | 57.2 |
| MFL17569D4-HHB | 48 | 36 ~ 54 | 1 | 48 | 3000 | 327.6 | 38.95 | 61.2 |
| MFL17569D4-VHB | 48 | 36 ~ 54 | 1.25 | 60 | 3300 | 345.68 | 45.28 | 64.1 |
| MFL17569D4-HVB | 48 | 36 ~ 54 | 1.5 | 72 | 3600 | 382.75 | 53.8 | 65.8 |
Dimension Drawing
P&Q Curve
Signal Output Options
This series is available with the following signal functions (per complete part number):
FGPWMRDLD
| Signal | Direction | Function | Description |
|---|---|---|---|
| PWM | Control Input | PWM speed control | The industry-typical control frequency is 25 kHz ±10%. A 0% duty cycle may mean minimum speed or full stop, so a 20–100% control window is commonly recommended; confirm on the complete part-number approval sheet. |
| VPWM | Control Input | DC voltage speed control | EC series speed is set by an external DC control voltage, commonly 0-5 V or 0-10 V. The control line must share ground with the fan supply negative; input range, wire colour, impedance and minimum speed follow the complete part-number approval sheet. |
| FG / TACH | Status Output | Reports speed as a pulse train | Typically an open-collector/open-drain output with an external 4.7–10 kΩ pull-up; usually 2 pulses per revolution, RPM = FG Hz × 60 ÷ 2. Pull up to the host logic supply, never directly to the fan supply. |
| RDH / RDL | Alarm Output | Locked-Rotor Alarm Rotation Detector / Locked-rotor Alarm | RD is a locked-rotor status output — it does not indicate reverse rotation. RDH goes high when the fan is locked or stopped; RDL goes low. Usually an open-collector output; start-up delay and actual levels follow the complete part-number approval sheet. |
| LD | Alarm Output | Life Detection Life / Low-Speed Detection | Detects speed decay or fan ageing: the output goes low when speed falls to roughly 70% of rated. LD is not the same function as the RD locked-rotor alarm and is available on selected models only. |
Signal notes:RDH and RDL are two output polarities of the same locked-rotor alarm; LD is life/low-speed detection. The three are not interchangeable, and wire colour must never be used to identify a function. PWM/VPWM describe series capability — the actual model, wire colours and control range follow the approval sheet.
Typical signal diagrams
FG / TACH
Tachometer Pulse Output
A continuous pulse train lets the host calculate speed. Usually an open-collector output; pulses per revolution, pull-up voltage and resistor must be confirmed per model.
PWM
PWM speed control input
Duty cycle sets the speed. Frequency, amplitude, usable duty range, minimum speed and input wiring must not be treated as universal values.
VPWM
DC voltage speed control input
The external DC control voltage is applied to the VPWM lead and shares ground with the supply negative; speed rises from minimum to maximum with the control voltage. Wire colour and range follow the approval sheet.
LD
Life Detection life / low-speed detection output
The output goes low when speed falls to roughly 70% of rated, indicating performance decay; LD differs from the RD locked-rotor alarm.
RDH / RDL
Two output polarities of the locked-rotor alarm
RDH is high on lock; RDL is low on lock. They differ only in polarity and both indicate whether the fan is locked or stopped; start-up delay and electrical ratings follow the complete part-number approval sheet.
How to read these diagrams:These are MAX FLOW function concept diagrams, not fixed electrical parameters for every series. Before design, obtain the wire colours, ratings, pull-up conditions, output polarity and failure states for the complete part number.
Part Number Code
MFLSeries
10025Size
D1Voltage
HSpeed
BBearing
PFSignal
IP68Protection
Example MFL10025D1-HBPF-IP68
From left to right: MFL series, size code, voltage code, speed code, bearing code, signal code and ingress protection. The code order matches the DC fan and blower series; available combinations follow the complete part-number approval sheet.
From left to right: MFL series, size code, voltage code, speed code, bearing code, signal code and ingress protection. The code order matches the DC fan and blower series; available combinations follow the complete part-number approval sheet.
MFL
DC Centrifugal Fan
10025
Size code: 100mm impeller diameter, 25mm thickness
Voltage
D055 VDC
D112 VDC
D224 VDC
D448 VDC
Speed
LLow speed
MMedium speed
HHigh speed
HHUltra-high speed
VHMaximum speed
Bearing
BBall Bearing
SSleeve Bearing
Signal
LLD
PPWM
FFG
RRD
Letters always follow the order L → P → F → R
PFPWM + FG
PRPWM + RD
R / RDLR defaults to an RDH locked-rotor output with no added H; only the low-level type is marked RDL
IP55 / IP68
Ingress-protection suffix; applies only to complete part numbers with the corresponding certification or approval sheet
Some models carry additional custom suffixes (lead length, connector type, ingress protection, etc.);
Please confirm the complete part number with our sales team before ordering.