HUAWEI MU709 Series HSPA+ LGA Module
Hardware Guide
Mechanical Specifications
Issue 09 (2017-12-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
68
The following figure shows the packaging.
6.6 Customer PCB Design
6.6.1 PCB Surface Finish
The PCB surface finish recommended is Electroless Nickel Immersion Gold (ENIG).
Organic Solderability Preservative (OSP) may also be used, ENIG preferred.