ZMOD4510 Datasheet

© 2021 Renesas Electronics Corporation

12

June 30, 2021

6. Assembly Restrictions, Operation, Integration Notes and Storage

When implementing the ZMOD4510 in electrical circuit boards, a gas sensor module may react to chemicals during the assembly process and

to outgassing components, such as resins from the printed circuit board (PCB) assembly. A standard soldering profile can be used to assemble

the ZMOD4510 on the user’s PCB and should fulfill the IPC/JEDEC J-STD-020C Standard (“Moisture/Reflow Sensitivity Classification for Non-

hermetic Solid State Surface Mount Devices”). A typical lead-free reflow solder profile is shown in Figure 3. After assembly, an outgassing of

the PCB and electronic components must be considered, especially when operating the sensor module at elevated temperatures. This will

ultimately influence the sensor signal and accuracy of the Air Quality Index (AQI). A PCB heat treatment before assembling the ZMOD4510 is

recommended. After the gas sensor module assembly, no coating, cleaning, or ultrasonic bath should be applied to the PCB. Also, in case

sensor module parts are contaminated during assembly or storage, it can be cleaned after assembly by using the cleaning library provided with

the firmware to remove any contamination of solder vapor from the MOx surface. In case the sensor module does not show full performance

after a cleaning cycle, a change to the protection sticker package is recommended (see Ordering Information).

Store the sensor module in an antistatic metallic bag with a low VOC background after the sensor module is removed from its original packaging

or the assembled PCB is populated. The optimal storage conditions are < 1ppm TVOC, < 100ppb O3, < 100ppb NO2, 10°C to 50°C, and

humidity levels within 20% to 80%RH. If the sensor module is stored outside of these conditions for extended periods of time, the sensor module

readings can exhibit a temporary offset. The sensor module can be reconditioned and brought back to its calibration state by operation for

24 hours to 48 hours in clean air.

To receive the Renesas Gas Sensor Guidelines with detailed information and on assembly, material outgassing, test and validation procedures,

contact Renesas via the contact information on the last page.

Figure 3. Typical Solder Profile