Issue Date: October 19, 2022

• Description: WINSTAR decided to discontinue WH4004A family and has prepared substitutes WH4004A1 family version from now. In order to improve production efficiency and yield, and more in line with the in-house process, the following metal frame and PCB optimization changes will be made. 

• Description of change:

     1. Adding positioning column and the side seal opening on the metal frame.

     2. The shape of the positioning holes of the metal frame on the PCB are changed from square to round, and the positions of some components are changed.       

• Part Numbers Effected: 

• Module Drawing Comparison:

• Alternatives/Timing:

The alternatives are already available at this link.

We appreciate your support and understanding. We will do our best to support you during the transition.lf there is any further question, piease feel free to contact us. Thank you!