Following on from the 3-cent MCU thread, I searched lcsc.com for GHz PNPs, and found a couple of vendors I wasn't familiar with:
They sound pretty sketchy, but it may only be the chinglish problem. Any experience here?
Cheers
Phil Hobbs
Following on from the 3-cent MCU thread, I searched lcsc.com for GHz PNPs, and found a couple of vendors I wasn't familiar with:
They sound pretty sketchy, but it may only be the chinglish problem. Any experience here?
Cheers
Phil Hobbs
-- Dr Philip C D Hobbs Principal Consultant
The 2SC3357 seems to be an NPN, not a PNP. See data sheet, not selection guide:
No personal experience with 2SC3357, but Cal Eastern Labs lists it as "phase out": Mouser as "obsolete": and Digikey as "obsolete":
-- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com
Chinese products marketed to/by China usually do sound sketchy. That doesn't mean they are, but it is still buying from China. Only way to find out is try em.
"Conscious products begin with conscious people." At least they're not Flying Dung brand.
NT
You still have to worry about infant mortality:
-- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com
a 120MB PATA drive! probably cost a G in 1991. Well a unit from a name brand, anyway
I think that Communism had the same cultural effect in the Chinese that it had on the Russians; only a small circle of family and friends can be trusted.
Still, it would be great if some quality Chinese fab would pick up the defunct SOT89 RF parts that everyone else dropped... especially PNPs. They could charge a lot more for them.
-- John Larkin Highland Technology, Inc lunatic fringe electronics
Back in the day 2SA meant PNP and 2SC meant NPN
piglet
Seems unlikely. Russia and China have vastly different cultures, and the communist party in China is a rather different beast than the communist party was in Russia.
Not that John Larkin knows much about either, and probably thinks that both can be equated to "socialism" about which he knows even less.
The GHz wideband transistors used to be remarkably cheap. There must have been something in the mass market that used to use them in volume, and has now stopped.
Getting the message through to some boutique fab that there's a small, but well-off market for them in instrumentation should be something that someone in this group ought to be able to manage.
Jim Thompson would have been the obvious link - he designed boutique integrated circuits. If he survives chemo it might be worth mentioning it to him.
-- Bill Sloman, Sydney
One of the 2sc3357 offered is made by Guangdong Hottech. They're a reputable manufacturer, and probably not so likely to discontinue parts willy-nilly. It'd be worth checking their other GHz parts.
-- Thanks, - Win
Right, in the Japanese system 2SA & 2SB are PNP and 2SC & 2SD are NPN.
ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.