STMicroelectronics marketed itself for their strongest telecom surge protection chip at the lowest voltage, 8 V and 10 V. Only after I made a test fixture, I found the 8 V version is unavailable anywhere (unless you're directly ordering 3,000 chips in a reel from ST with a 10+ weeks lead time), and the 10 V version is deprecated (according to Mouse, the ST page doesn't even tell you)...
Well, I guess not many vendors are still doing VDSL2 & G.fast when internet over phone line is becoming a thing of the past... And what have also gone are those telecom-grade high-speed, high-surge protection chips. #electronics
I mean, the standard ADSL is still going be a thing forever. But VDSL2+ and G.fast are really beating a dead horse at this point, targeting 300 Mbps and 1 Gbps. Old infrastructure is only reason to keep using the phone line, and the same infra is unlikely to support those data rates either. Understandably they're mostly only a niche for the last-mile links.
For high-speed data line surge protection, those VDSL2+ and G.fast chips really have the highest ratings. Just how many TVS in the world are tested with a 2500 volts, 500 amps surge (2/10 μs)? And also have a parasitic capacitance lower than 1 pF at the same time? Sad to see them gone. #electronics
@niconiconi
Aside: It's surprising (at least to me) that ATM works (at some speed) over basically anything, for example over a salty wet string: https://www.revk.uk/2017/12/its-official-adsl-works-over-wet-string.html
