# PCB mounting guidelines Source: [https://docs.qualcomm.com/doc/80-73480-1/topic/pcb-mounting-guidelines.html](https://docs.qualcomm.com/doc/80-73480-1/topic/pcb-mounting-guidelines.html) This topic provides specifications for mounting the QCS615 onto PCBs. ## RoHS compliance Source: [https://docs.qualcomm.com/doc/80-73480-1/topic/pcb-mounting-guidelines.html](https://docs.qualcomm.com/doc/80-73480-1/topic/pcb-mounting-guidelines.html) This device meets the substance restriction requirements of the EU RoHS directive. Its Sn/Ag/Cu solder balls use SAC405/Ni composition. A product material declaration (PMD) that provides RoHS and other product environmental governance information is published when the data is available. ## SMT assembly guidelines Source: [https://docs.qualcomm.com/doc/80-73480-1/topic/pcb-mounting-guidelines.html](https://docs.qualcomm.com/doc/80-73480-1/topic/pcb-mounting-guidelines.html) For recommendations on SMT process development, see [SMT Assembly Guidelines (SM80-P0982-1)](https://docs.qualcomm.com/bundle/SM80-P0982-1/resource/SM80-P0982-1.pdf). Last Published: Mar 09, 2026 [Previous Topic Carrier, storage, and handling information](https://docs.qualcomm.com/bundle/publicresource/80-73480-1/topics/carrier-storage-and-handling-information.md) [Next Topic Part reliability](https://docs.qualcomm.com/bundle/publicresource/80-73480-1/topics/part-reliability.md)