Not sure what specific technology they use/license (they might have an in-house design), but it's all vaguely equivalent from a high level point of view. Qualco

Not sure what specific technology they use/license (they might have an in-house design), but it's all vaguely equivalent from a high level point of view. Qualcomm calls theirs QFPROM. In the end, all of these companies end up licensing whatever fuse block is compatible with their process, e.g. I'm sure TSMC has something in-house for theirs. Intel of course own their own fabs, so they probably have their own. DesignWare also have their own (generic-ish?) thing, etc. Basically every modern SoC or really IC of any complexity uses fuses for something (e.g. calibration data, switching in spare/redundant blocks when manufacturing defects happen, binning/product segmentation, crypto key storage, etc).