can the vent hole of VL6180X be sealed off without negative effects ?

timkshia · ‎2015-03-25

Posted on March 25, 2015 at 08:13

VL6180X datasheet mentions only the dry reflow process can be applied to it because the vent hole on top of its package. if the vent hole is sealed of by some epoxy, will this cause some troubles for the sensor ? what is the purpose to open a vent hole on the module package ? Thanks.

#proximity-sensor

Nickname681_O · ‎2015-03-26

Posted on March 26, 2015 at 15:29

Tim,

Sealing the vent hole will not negatively affect the operation of the part, but it may cause some issues during a reflow process due to pressure build up from the heat. Even with the vent holes sealed the package should not be subjected to a wash process due to the other holes (emitter. receiver, ALS) and the critical optical properties. If any residue is left on the emitter or receiver the operation of the part will be degraded.

Ken W @ ST