Silicon Labs

Silicon Labs built its name on mixed-signal integration, and the profiles here show that range: the CP2102N USB-to-UART bridge in two order codes — the A02-GQFN24 and A02-GQFN28R, which differ in package pin count and packing — alongside the Si7021-A20-GM digital humidity and temperature sensor in a 6-pin DFN package. The CP2102N is the industry-default choice for adding USB connectivity to embedded designs: a single-chip bridge with USB full-speed on one side and UART on the other, driver support across major operating systems, and integrated USB termination that trims external components. The GQFN28R reel variant serves high-volume assembly while the GQFN24 serves lower-volume builds, so match the exact suffix to your production plan. The Si7021-A20-GM offers I2C digital output with factory-calibrated readings — but Silicon Labs lists it as End Of Life with last-time-buy announced, so confirm availability and consider the newer Si7006/13/20/21/34 generation for new designs.

Sourcing notes for Silicon Labs parts. Always quote the complete manufacturer ordering code — package, temperature grade, speed or accuracy grade, and packing (reel, tube or tray) all change availability and price, and suffixes are where most mismatches happen. Check the lifecycle status on the manufacturer site before committing to a multi-year build; parts flagged not-recommended or obsolete need a last-time-buy plan or a verified alternate lined up early. With every offer, request traceability documents — date code, lot code and original packing — and confirm the inspection steps your supplier applies to high-risk lots.