2UUL BS148 Black Skull Solder Paste 148℃ 50g

When you're reballing a CPU or working a jumper on a board that's already been through two or three previous repairs, the melting point of your paste decides whether the job goes clean or the board fights you back. The 2UUL BS148 Black Skull Solder Paste is built around a 148°C melting point, which puts it in the low-temperature bracket technicians reach for when a board can't take another high-heat cycle. On multilayer boards where pads have already been reflowed once, running standard 217°C-plus paste raises the risk of lifted pads, delaminated layers, or dead ICs sitting next to your work area. Dropping to 148°C shortens the time your hot air station or iron needs to stay on the board, which means less heat soak into the layers underneath your target chip. This is the paste you reach for on iPhone and Samsung logic boards where the CPU, NAND, or power IC sits close to other components you can't afford to disturb. The 50g jar size fits comfortably on a repair bench and gives you enough working paste for dozens of reballing jobs, jumper repairs, and short-pin fixes before you need a refill, which keeps per-repair cost predictable for a shop running multiple boards a day. In actual bench use, this kind of low-temp paste gets used for CPU reballing after a board comes in dead after flash or stuck on a boot loop, where the fix is a reflow rather than a full chip swap. It also shows up in jumper work — running a fine wire between two points on a board where a trace has lifted or corroded — since the lower reflow temperature means the jumper wire and surrounding pads settle without extra stress on the joint. Screen and charging port technicians occasionally pull it out too, when a repair calls for touching a nearby IC pad without risking the display driver or charging IC sitting a few millimeters away. What separates a paste like this from generic solder wire is control: paste lets you place a precise amount exactly where you need it, under a microscope if the pitch is tight, rather than dragging solder across a board and cleaning up bridges afterward. Combined with a low melting point, that control matters most on boards where one careless reflow turns a simple repair into a dead board. For a shop that handles reballing, jumper work, and board-level repair as a regular part of the workload, keeping a jar of 148°C paste on the bench alongside your higher-temp paste gives you the option to match paste temperature to the specific repair instead of using one paste for every job. That flexibility is often the difference between a board that comes back working and one that needs a donor board search afterward.