BMD040-3MP Bosch Sensortec, BMD040-3MP Datasheet - Page 10

• Manufacturer Part Number: BMD040-3MP
• Description: ABS. PRESSURE SENSOR ANLG INDUST
• Manufacturer: Bosch Sensortec

Specifications of BMD040-3MP

• Pressure Type: Absolute
• Operating Pressure: 7.25 ~ 435.11 PSI, 50 ~ 3000 kPa
• Port Size: Male, 0.591" (1.5mm) Tube
• Output: ANALOG
• Voltage - Supply: 4.75 V ~ 5.25 V
• Termination Style: Surface Mount
• Operating Temperature: -30°C ~ 100°C
• Package / Case: TO-8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 828-1004

3
In order to avoid deterioration or pre-damage of the sensor at the user following points have to
be absolutely noticed:
a) It has to be ensured that the O-ring (if an O-ring is used) will not be damaged at assembly.
b) The sensor must not be mounted with striking tools (e.g. hammer). The maximum allowed
c) When the assembly unit is exposed to a leakage test, don't exceed maximum overpressure.
d) At immersion test plug connector and pressure port for protection against water ingress.
e) Avoid reverse voltage and over-voltage when electrical tests are applied to the sensor.
f) It is recommended to keep the distance between the TO-8-bottom plate and the PCB at
g) It has to be ensured, that pressure is only applied via the pressure pipe, since above a
h) The sensor is sensitive to temperatures above 170°C, thus temperatures above this value
If the installation of the sensor takes place at the supplier e.g. of an assembly unit, the supplier
has to be instructed accordingly.
If the pressure sensor is removed after field use from the interface of an assembly unit e.g. rail,
the sensor has to be replaced by a new sensor to guarantee tightness.
Rev. 1.3
© Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such
as copying and passing on to third parties. BOSCH and the symbol are registered trademarks of Robert Bosch GmbH, Germany.
Specification is subject to change without notice. Document contains proprietary information and is not intended for publication.
Only a thin film of ‘Shell Ondina Oil 68’ or light engine oil (5W20) may be applied as
lubricant. Don't use silicone based lubricants.
force at the pins is 10N. In order to avoid leakage through the glass isolation around the
pins, use as low as possible forces.
approximately 1.8 … 2.0mm (see figure 7 and figure 8), which is the thickness of the square
metal part at the bottom plate. This part is holding the pressure pipe. This mounting
condition prevents possible shortcuts between the electrical connections (TO-8 housing is
connected to GND).
certain pressure, the metal cap will start to bend. This critical pressure level is slightly above
the full scale pressure range.
at the TO8-cell (not at the pins) must be avoided.
As a consequence:
Assembly installation
(1) Reflow soldering of the sensor is forbidden, since too high temperatures may
(2) The pressure of the measured media has to be applied via the pressure pipe.
(3) A dedicated assessment of the influence of the implementation method (O-
occur. By using hand or dip soldering of the pins the temperature at the pins
may exceed 170°C, but not in the inner part of the sensor. For checking the
temperature of the housing, a thermo couple or temperature probe could be
used.
Thus this pressure pipe has to be connected to the device (e. g. an air-
conditioner) without leakage. This could be done by using an O-ring or laser
welding or soldering. Depending on the pressure range some methods are not
feasible (e. g. O-Ring for 30 bar applications). If laser welding or soldering is
used, the same temperature restriction is valid as described in (1), but in this
case the pressure pipe is introducing the temperature.
Ring, soldering, welding, etc.) could be done together with Bosch Sensortec in
order to ensure proper assembly and to avoid damage of the sensor.
Page 10 - proprietary information
Data sheet
BMD040
Bosch Sensortec
23 October 2008