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Most Active Forum Topics this week And, if they’re made of unobtainium, yes, good luck. Remember when they used to be ECG.
Just did a search on digikey with a few additional cases that should mount onto a TO heatsink, and not very many results, and of those many are BU’s, which are switching transistors and I assume it’s not what you’re after. Widespread Centurylink Outage this morning If not, this could be a reason why the original datashee only lasted a month.
The fT is lower than original, but that should not present a problem. Shorted outputs, shorted drivers and pre drivers. If you’re trying to repair some older solid state devices, good luck in finding germanium components. Anonb Anon Jun-7 Anon6f72b Anon Jun-7 1: Were the replacements matched? Anon6f72b to Anonb Anon Jun-7 3: There is evidence that the Darlington pairs had been replaced with substitutes fresh solder, part numbers differ from schema. Darasheet to shdesigns Anon Jun-7 3: I don’t share that opinion.
So it is up to the characteristics being audio-friendly. Anonb Anon Jun-6 9: I think 2sa9688 op simply wants the exact same components.
2SA Datasheet(PDF) – Savantic, Inc.
But yes, the hFE should be 22sa968 for each group. And yes, there were several circuits where I ran into troubles, as they were “close”, but not exact. Anonb Anon Jun-8 Would typically last a year.
I’ve already sunk several hours in researching these discontinued parts. I told him it’s not worth more than a datashret in non-working condition, but he was unable to negotiate cheaper and badly wants this receiver.
NTE has a horrid reputation among repair circles and I like to avoid it. One circuit I worked on used to use an MJ I think it ran right at the limit of dtaasheet. The Pd is the same for the replacement pair specified, are the device pinouts.
They really ARE made of unobtainium! I’ve seen that with 6. The substitute parts have a higher Ic, as well. Class A amps were one case. Parts Express has the NTE parts. It’s like that feeling when you step into a mud puddle and discover it is much deeper than it looked and you find yourself up to your knees in mud and think “well, I may as well datasheeg going.
It’s rare to find any Sankens that are NOT counterfeit parts these days. Repairing a Sansui G Anon6f72b Anon Jun-8 3: It was not that they were bad, it is that thay are a generic replacement for many parts. Comes up not found at my regular suppliers.
2SA 데이터시트(PDF) – List of Unclassifed Manufacturers
Something in dtasheet back of my mind tells me I should have firmly turned down this job. Supposedly have many of each in stock, and cheap. If transistors are in parallel, they need to be matched, in order to ensure that they share the load.
It was rare but does happen. In audio applications, the fT won’t make a difference. You mean re-marked so it’s not what it’s supposed toor just a fake manufacturer, so a possibly inferior product can command a higher price?
I’m not comfortable with this situation, but he’s a regular customer and I don’t want any bad blood for refusing to work with him on this 2s9a68. The originals are 25W dissipation, while the substitutes are 20W dissipation.