Hi,
I have friends Yamaha M-4 on my desk for repair with burned driver and output transistors on one channel. Of course, all of them are now obsolete. I managed to acquire some replacements for the output transistors but have nothing for the driver pair 2SA968/2SA2238.
I have RS and Farnell distributors in a place where I live, but I didn't manage to find anything on their stock that could be useful in my case.
Found some that are sold on ebay though, but I I think there is a great chance of them being chinese fakes, so I would like to avoid those and find some source that is more reliable.
Does anyone have an idea on this ?
I have friends Yamaha M-4 on my desk for repair with burned driver and output transistors on one channel. Of course, all of them are now obsolete. I managed to acquire some replacements for the output transistors but have nothing for the driver pair 2SA968/2SA2238.
I have RS and Farnell distributors in a place where I live, but I didn't manage to find anything on their stock that could be useful in my case.
Found some that are sold on ebay though, but I I think there is a great chance of them being chinese fakes, so I would like to avoid those and find some source that is more reliable.
Does anyone have an idea on this ?
Avoid exotic fakes and go for serious european replacements. Maybe not so low-noise or high FT, but reliable and good soundind, especially in a global feedback environment. Pinout is different and that is difficult to replace. But in a GFB circuit, you can use 2sc1315, general purpose and a big affordable replacement with a REAL good sound. I know many specialists using FAKES, they are moanin' in a orgasm for those bjt, just poor written characters on a plastic case...
Let me know.
Gianni
Let me know.
Gianni
CDIL makes them in India (dunno their quality). Magnatec in europe used to make them and I have a few pairs which seems ok.
Newer toshiba replacements should be ok in your application.
Thank you guys !
I compared the datasheets and it seems that 2SA1930 has half the SOA of the originals while 2SA1011/2SC2344 and 2SA1837/2SC4793 look fairly good.
Mouser stocks 2SA1837/2SC4793, but it seems that they ask 90€ to ship 1€ worth of transistors to Croatia 😱
Are there any other stores that you could recommend where I could look for these transistors ?
I compared the datasheets and it seems that 2SA1930 has half the SOA of the originals while 2SA1011/2SC2344 and 2SA1837/2SC4793 look fairly good.
Mouser stocks 2SA1837/2SC4793, but it seems that they ask 90€ to ship 1€ worth of transistors to Croatia 😱
Are there any other stores that you could recommend where I could look for these transistors ?
Try these guys, they have those toshibas mabe by unisonic. The unisonic parts are not as good but you could do much worse. If you want piece of mind they sell original sanken drivers which have better SOA than any of the toshiba parts but are a little slower. Another option would be 2sb669 and complement, also from unisonic.
This company is reliable and dont beat around the bush.
Profusion Splash Screen
This company is reliable and dont beat around the bush.
Profusion Splash Screen
Elmatis is almost in my neighborhood, but after all the bad experiences that me and other people had with fake components bought in stores here in Zagreb I wanted to avoid Elmatis, Chipoteka and others from the start.
Now I limit myself on buying only resistors and film capacitors here, and ordering everything else from reliable international distributors (mostly Farnell).
Try this one. They are a reliable source: Medium Power Audio Bipolar Transistors - Buy OnLine @ AmpsLab
Farnell is reliable, but a hell expensive 🙁 I use Mouser, especially with group buy, which means free delivery. We put order usually 2 times per month...
Sajti