PM8150B 102 Power ic

When a Xiaomi board comes into your workshop completely dead — no charging light, no logo, nothing on the display — the power rail is usually the first place to check, and PM8150B 102 sits right at the center of that rail. This chip is one of three to five PMICs Qualcomm pairs with the Snapdragon 855 series (alongside PM8150, PM8150A, and PM8150L), and its job is to regulate core voltage and manage charging across the board. When it fails or corrodes, you get symptoms like dead after flash, hang on logo, or a phone that draws current but never powers on.Mounting this IC replaces a fault at the source instead of chasing symptoms across the board with a multimeter for hours. You place it on the same footprint the original occupied, apply flux and reflow at controlled temperature, and test the power rail before reassembly. Technicians handling Xiaomi Mi 9, Mi 10, Mi 10 Pro, and Redmi K20 Pro boards run into this part regularly, since these models share the Snapdragon 855 architecture and the same PMIC layout.Reballing this chip needs a stencil matched to its BGA pad pattern — mismatch the stencil and you introduce a fresh dead phone fault instead of fixing the original one. Preheat the board evenly before hot air work; PMICs sit close to other heat-sensitive components, and uneven preheat cracks solder joints elsewhere on the same board. Keep your hot air station calibrated so the reflow profile matches the chip's BGA spec rather than guessing temperature by eye.This part sees the most use in dead board recovery, where a phone shows zero response to charger or power button. It also comes up in charging issue repairs, where the device powers on but won't take charge properly, since the PMIC's charging control logic sits inside this same chip. On boards with intermittent power, technicians sometimes reflow the existing IC first as a diagnostic step before committing to a full IC change karna — if reflow doesn't resolve it, the chip itself needs replacing.Genuine sourcing matters more with power ICs than almost any other board-level part. A counterfeit or recycled PM8150B often looks correct under a microscope but fails within days of remounting, sending the same board back to your bench for rework. This listing supplies a new, unused chip sourced for accuracy against the verified part number, so your reflow work holds instead of needing a repeat job.Store this IC in an anti-static bag until you're ready to mount it, and avoid handling the contact pads directly — oxidation and fingerprint oils affect solder wetting during reflow. Pair it with an ISP box or UFS tool during diagnostics if you need to confirm whether the fault is power-related before committing to hardware replacement, since software marna alone won't fix a hardware-level PMIC fault.For repair shops running high volumes of Xiaomi board work, keeping PM8150B 102 stocked alongside its sibling PMICs (PM8150, PM8150A, PM8150L) covers most Snapdragon 855-era power faults without waiting on a supplier mid-repair.