Out of the ex-Sanyo catalogue they also still offer the 160V series100Vce...
2SA1552 / 2SC4027
Still active in TO-252.
Out of the ex-Sanyo catalogue they also still offer the 160V series
2SA1552 / 2SC4027
Still active in TO-252.
How well do these compare with the KSC/KSA variety?
Consistent in gain etc?
I'm looking for a good SMD equivalent..
S
Last I checked KSA1220A/KSC2690A SOA was 220mA @50V and 90mA at 100V,
2SA1552 is 150mA @50V and 40 mA at 100V, this is decent but not as good, there
are many parts that are far worse.
2sa1930/2sc5171 only do 100mA@50V, 35mA@100V but are rated for 2A.
These have been talked about recently, but are TO-220 with very good SOA:
2SC4883A/A1859A - TO220-F 20W 180V 2A 30pF 120 MHz 300mA@50V 75mA@100V
These also are TO-220 with very good SOA:
2sa1837/2sc4793 -TO220 1A 20W 220mA@50, 85mA@100V
Next to look at is beta droop.
2SA1552 is 150mA @50V and 40 mA at 100V, this is decent but not as good, there
are many parts that are far worse.
2sa1930/2sc5171 only do 100mA@50V, 35mA@100V but are rated for 2A.
These have been talked about recently, but are TO-220 with very good SOA:
2SC4883A/A1859A - TO220-F 20W 180V 2A 30pF 120 MHz 300mA@50V 75mA@100V
These also are TO-220 with very good SOA:
2sa1837/2sc4793 -TO220 1A 20W 220mA@50, 85mA@100V
Next to look at is beta droop.
I bought 200 each of Bob Cordell's recommended VAS devices, the Sanyo 2SC3601 / 2SA1407 , just a few months before they were discontinued. Bob's got the original Sanyo datasheets available for download from his website. They're pretty nice: 200V, 400 MHz, 0.15A, 2.5pF. They were sort of expensive even while active production, when you could buy them from DigiKey, as I recall I paid $2.75 each in qty=200. Now it's a stash of course.
Those Sanyo 2SC3601 / 2SA1407 are nice for sure.
I wonder how much improvement in an audio amp if using 2SC3601 / 2SA1407 vs KSC3503 / KSA1381? Crap these designs are so good, I need a distortion magnifier to chart the thd's. I go by if I am measuring my Amber 3501 residual, it is more than good enough.
I just bought some more A1381 from Arrow, free shipping from NL to Canada. I also bought some genuine?Sanyo 2sa1381e/2sc3503e from polida on ebay, we shall see if they are any good.
I wonder how much improvement in an audio amp if using 2SC3601 / 2SA1407 vs KSC3503 / KSA1381? Crap these designs are so good, I need a distortion magnifier to chart the thd's. I go by if I am measuring my Amber 3501 residual, it is more than good enough.
I just bought some more A1381 from Arrow, free shipping from NL to Canada. I also bought some genuine?Sanyo 2sa1381e/2sc3503e from polida on ebay, we shall see if they are any good.
I also bought some genuine?Sanyo 2sa1381e/2sc3503e from polida on ebay, we shall see if they are any good.
Please let us know if they are genuine.
We are stuck with what they give us. if you find it , it is old stock.
My thinking is the process is so well controlled, low deviations, part to part uniformity, unless they want to mess with the secret sauce
I do not think it matters a whole lot based on what I have been measuring with them, shaving ppm's? I wave my hand and the instrument reacts
if my brain was powerful enough, I'd modify the spice models, to model the process variations and see how it affects performance, but I am lucky I can't figure it out, so I do not have to try
My thinking is the process is so well controlled, low deviations, part to part uniformity, unless they want to mess with the secret sauce
I do not think it matters a whole lot based on what I have been measuring with them, shaving ppm's? I wave my hand and the instrument reacts
if my brain was powerful enough, I'd modify the spice models, to model the process variations and see how it affects performance, but I am lucky I can't figure it out, so I do not have to try
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rocelec.com has 2sc3503e and 2sa1381e. unfortunately you need to buy big quantities.I'm trying to buy these:
KSC3503 only D beta grade is available
KSA1381 E grade is available
Anyone found a source for both type in E's?
BR , Toni
That's not surprising - Rochester Electronics also has 2SA1407E and 2SC3601E.
Rochester Electronics
: Search for 2sa1407
Rochester Electronics
: Search for 2sc3601
Again, one has to purchase big quantities, but the prices are pretty good!
For those that are not "high rollers", can you say group buy?
mlloyd1
Rochester Electronics
: Search for 2sa1407
Rochester Electronics
: Search for 2sc3601
Again, one has to purchase big quantities, but the prices are pretty good!
For those that are not "high rollers", can you say group buy?
mlloyd1
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