Sensirion STC31 Handleiding
Pagina's 3 Gasmelder
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www.sensirion.com 1/3 Version 2 June 20241.–
Handling and Assembly Instruction
F Sensirion STC Thermal Conductivity Sensor or’s
Preface
The Sensirion STC thermal conductivity sensor is design ed
for high volume applications. It is therefore compatible with
standard assembly and soldering processes. Nevertheless,
these sensors are -standard electronic components. non
Some care must be taken to ensure proper and reliable
operation of the sensors after assembly. This document
contains information on the handling and assembly of
Sensirion STC thermal conductivity sensors in a production
environment.
1Applicability
This document is applicable to all Sensirion STC thermal
conductivity sensors.
2ESD protection
The sensor shall be protected from ESD (Electrostatic
Discharge) and only be handled in ESD protected areas
(EPA) under protected and controlled conditions (ground all
personnel with wrist-straps, ground all non-insulating and
conductive objects, exclude insulating materials from the
EPA, operate only in grounded conductive floor, etc.).
Protect sensors outside the EPA using ESD protective
packaging.
Figure 1Protection against ESD is mandatory.
3Pick & place process
Standard pick & place equipment for QFN packages may
be used for handling. The upper part of the sensor, where
the membrane-covered cavity resides, is very sensitive to
mechanical impact and any contact must be prevented.
Direct contact between the nozzle and sensor membrane
must be avoided. The lower 1.6 mm of the sensor surface
is intended for pick & place (see Figure 2)The tool surface .
touching the module in the pick area should be flat and
smooth. Pick & place forces should not exceed 4N.
Figure 2Area of the sensor suitable for application of force during
mounting process is indicated with dashed lines. All dimensions
are in mm .
4Water & dust protection membrane
The STC sensor is equipped with a water and dust
protection membrane that is directly attached to the sensor.
The membrane completely covers the sensor opening (see
Figure 3) and thus acts as a shield against pollution from
spray water and dust. The membrane is completely
permeable to all target gases the STC is intended to
measure. Therefore, the water and dust protection
membrane must not be removed, damaged or altered in any
way to ensure reliable operation of the STC sensor.
Figure 3 The dust protection membrane completely covers the
STC sensor surface.
Product specificaties
| Merk: | Sensirion |
| Categorie: | Gasmelder |
| Model: | STC31 |
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