Sepa RD12038B24M 14 -28 Vdc DC brushless fan, axial fan 2450 rpm 172 m³/h RD12038B24M Data Sheet

Product codes

RD12038B24M

Running

VOH

VOL

T=T1+T2+T3+T4

1、 Output waveform:square wave

2、 When the voltage value is higher (Voltage Y )then output waveform is higher

3、 When the fan is shutdown then output waveform is a horizontal line

4、 The cyclic distance is longer then the RPM is Slower

5、 RPM formula as follows:

=2800

10、RPM detection

Lmin=42000ns

RPM =

4200

Example

X=15ns

Ls=1000ns

RPM =

4200

X(ns)

1 Cycle

Timer (X)

11、Installation drawing

Model no.: RD12038B12H

1、Mechanical

1 1、External dimension

120*120*38mm

1 2、Weight

1 3、Bearing

2、 Electrical characteristics( in free air at rated voltage)

2 1、Rated voltage

246g/pcs (Lead wire length x 300mm & without connector)

Two Ball bearing

12V

2 2、Rated current
2 3、Rated input power
3、 Efficiency
3 1、Rated speed( range)

0 5±10%A
6 0±10%W

2800RPM±10%

3 2、Maximum air flow
3 3、Maximum static air pressure
4、 Characteristics
4 1、 Operating voltage range

113 99CFM
8 66mm H2O

7 5V 13 8V

4 2、 Starting voltage
4 3、 Locked current
4 4、 Operating temperature
4 5、 Storage temperature

4 10、MTBF：50,000Hours

Grade IP58 to an immersion depth of 1 0 metre in water

At least 10MΩ at 500 VDC between housing and both lead
wires

Withstand 500 VAC 1 minute 1mA between housing and both
lead wires

Life ecpectance:50,000Hours continuous operation at rated voltage and normal temperature & humidity

4 11、Tensible strength of connector

Connector will not be any broken at 1 Kg for 15 seconds per
piece

7 5V(ON/OFF)
0 55A(Reference)

10℃ +70℃
30℃ +85℃

4 6、 Waterproof class

4 8、 Insulation resistance

4 9、 Dielectric strength

Item

Major components

Material & Specification

Grade

Rmark

Stainless steel

(SUS420J2)

Ball bearing or sleeve bearing

(Cu+GLY) 2100

Strontium ferrite

(BQB 14W)

MW 2

UEW

Polyvinyl Choride enamelled

copper wires (AWG#22)

7 10

Label

Polyester

8 1、 100% Electric, rotating, dead spot, fan blade fasten, and primary noise test on production line

8 2、 100% Current wave test with scope on production line

8 3、 100% Strike test by hand and noise filter in quiet room

8 4、 10 cm drop test at random in accordance with MIL STD 105E standard

8 5、 Random inspection in accordance with MIL STD 105E standard

8 6、 Pass/Reject standard:

Critical AQL:0 4 Major AQL:0 65 Minor AQL:1 0

7 7

7 8

94V 0

7 6

Silicon steel strip

(H23) (H 8)

7 5

Rubber magnet

7 4

Bearing

Two Ball bearing

7 3

Stator core

7 1

7 2

PBT 85% + Fiber 15%

94V 0

CAM 1

T:0 8mm

Red wire:+polarity Black wire:

polarity

8、Product inspection procedure

Inspection procedures below are extremely followed

Wiring printed single layer board

Printed Circuit Board

7 9

Lead wires

94V 0

7、Material

Heat resistance120℃

Fan housing

Fan blade

Material & Specification

0 22 0 23mm

Enamelled copper wires

PBT 70% + Fiber 30%

94V 0

9 2、

9、Notes:

9 1、

9 7、

9 8、

9 3、

9 4、

9 9、

9 10、

9 11、

The torque of the screw which locked the frame should not exceed 4 Kgf

It is very important to notify that avoid to drop from 60cm height when in any movement or
operation,it will impact the balance of blade Especially ball bearing structure is avoided to drop down

During the installation of the fan, please pay substantial attention to possible notice caused by
resonance vibration and shock

While the fan is in operation, please do not lock the fan intentionally for a long periods of time, since
the continuous stoppage will result in overheat and thus burnt out the fan

Please do not store the fan in the environment of high/low temperature or detrimental gas

We will not guarantee the products if the application of our products are exceeded the limitation which
is specified on this specification

In case of changes of the specification specified on this document A written notice is requested in
advance

Please do not touch the impeller with the pressure and never bring the fan with lead wire The bearing
and lead wire may be damaged

No guarantee on the products against the safety problem or failure caused by powder dust or insect

If there is any data or related documentation different from this data sheet This data sheet is the
principle reference

Please do not use the fan in the environment of corrosive liquid or detrimental gas

9 5、

9 6、

44 6dBA(Max 44 6dBA)

At rated voltage in sound proof room

Suspension

Background noise:14 9dBA

Free air

(Aim to center of the fan)

★

Fan

4 12、Accoustic sound level

MIC Sensor

4 12 1、 Accoustic sound level test descriptions

4 13 2、 Starting voltage is the least voltage that enables to start the fan by sudden power on

4 13 1、 Rated current, rated speed, and rated input power shall reach bottom line of specification after 5
minutes continuous rotation at rated voltage and reach standard specification after 10 minutes continuous at rated
voltage

5、 Protection:

4 13、 Characteristics definition:

Reversal voltage test: We took 200pcs for reversal voltage test at 12V for 1 minutes and all remain still
Fans work normally after corrected voltage

6、Safety

RoHS

√