Qualcomm’s Depreciation expense relative to capex

Hello, so I've been looking at Qualcomm recently and have been following its news. I was trying to make a DCF for it as a model, and when I got to the CAPEX and D&A section I noticed that D&A was much greater than CAPEX in the past few years, like about 150% of capex on avg. Does anyone know why this is? Not sure how to project this, if I consistently put like 150% of capex for D&A its gonna start cutting deeply into assets.