What the 40 GHz and 100-Cycle Ratings Mean on the Bench
The 925-142A-51S: Below that frequency the VSWR stays tight enough for production test and lab interconnect. The 100 mating cycles is the specified reconnect life before the snap-on retention starts to soften. That is a field-service number, not a permanent-install limit: if this adapter lives inside an enclosure and gets mated once, the cycle count is irrelevant. If it is on a test cable that gets swapped daily, plan on replacing it after about three months of daily connects. The gold-on-gold contact interface (beryllium copper centre contacts, gold-plated) keeps the mating surface consistent across those 100 cycles — no tin fretting or oxide build-up.