Ah, this thread again! I had high hopes it would die! But I will try to answer as best I can.
Your question is both prudent and untimely Robby. 35-40 years ago, and yes I know I’m starting to sound like John Curl, when I built Doxa amplifiers on a license, I used the transistors that came highly recommended, namely the NEC 1142/2681. At that time Norway was a Mecca for audio builders. I could order 1000 pairs of NEC Ring Emitter 2SA1227/2987 and get them delivered on my doorstep the very next day.
Late -80 saw the rising of the Jfets, the 2SJ74BL/2SK170BL.
Later, when I had moved on, I started to use Toshiba 2SA1358/2SC3421. The 2SA1360/2SC3423 looks almost identical so I just assumed they were the same but higher voltage versions. Of course I agree those would be better in most ways if they adhere to the data you cited.
My answer was rooted in the fact that I know 2SA1145/2SC2705 since a long time, AND I have several thousands of them.
Lesson learned, always check data.
R
Your question is both prudent and untimely Robby. 35-40 years ago, and yes I know I’m starting to sound like John Curl, when I built Doxa amplifiers on a license, I used the transistors that came highly recommended, namely the NEC 1142/2681. At that time Norway was a Mecca for audio builders. I could order 1000 pairs of NEC Ring Emitter 2SA1227/2987 and get them delivered on my doorstep the very next day.
Late -80 saw the rising of the Jfets, the 2SJ74BL/2SK170BL.
Later, when I had moved on, I started to use Toshiba 2SA1358/2SC3421. The 2SA1360/2SC3423 looks almost identical so I just assumed they were the same but higher voltage versions. Of course I agree those would be better in most ways if they adhere to the data you cited.
My answer was rooted in the fact that I know 2SA1145/2SC2705 since a long time, AND I have several thousands of them.
Lesson learned, always check data.
R
