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PMW3260DB Product Datasheet

Ultra Low Power LED Optical Mouse Sensor

PixArt Imaging Inc.

Version 1.50 | 05 May 2016 | 11001AEN

PixArt Imaging Inc. http://www.pixart.com

All rights reserved. Any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permission.

4.2

Layout Guidelines

 Insert the integrated sensor and all other electrical components into PCB.

 Wave-solder the entire assembly in a no-wash solder process utilizing solder-fixture. A solder-fixture is required to

protect the sensor from flux spray and wave solder.

 Avoid getting any solder flux onto the sensor body as there is potential for flux to seep into the sensor package. The

solder fixture should be designed to expose only the sensor leads to flux spray & molten solder while shielding the

sensor body and optical apertures. The fixture should also set the sensor at the correct position and height on the

PCB.

 Place the lens onto the base plate. Care must be taken to avoid contamination on the optical surfaces.

 Remove the protective kapton tapes from optical apertures of the sensor. Care must be taken to prevent

contaminants from entering the apertures. Do not place the PCB with the sensor facing up during the entire product

assembly process. Hold the PCB vertically when removing kapton tape.

 Remove the protective kapton tapes from optical apertures of the sensor. Care must be taken to prevent

contaminants from entering the apertures. Do not place the PCB with the sensor facing up during the entire mouse

assembly process. Hold the PCB vertically when removing kapton tape.

 Insert PCB assembly over the lens onto the base plate aligning post to retain PCB assembly. The sensor package will

self-align to the lens via the guide posts. The optical position reference for the PCB is set by the base plate and lens.

Note that the PCB motion due to button presses must be minimized to maintain optical alignment.

 Install mouse top case. There must be a feature in the top case to press down onto the PCB assembly to ensure all

components are stacked or interlocked to the correct vertical height