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Old 8th November 2011, 01:35 AM   #1
diyAudio Member
 
Join Date: Sep 2011
Default New list for pair matched transistors/jfets/fets

Hello all,

Sorry for no news for so long time. Finally we got a high-end semiconductor tracer for our pair matching service. Following accuracy can be guaranteed:

small signal differencial: 0.5%
small signal complementary: 1%
medium power differencial: 1%
medium complementary: 2%
high power differencial: 1%
high power complementary: 3%

Now the following transistors/jfets/mosfets are available:

BC550
BC560
BC546
BC556
BC489
BC490
MPS8099
MPS8599
MPSA18
MPSA06
MPSA42
MPSA92
BF422
2SA970BL
2SC2240BL
2SA1145
2SC2705
2SA1191
2SC2856
2SD756
2SB716
2SK170BL
2SJ74BL
2SK246GR
2N5400
2N5550
2SB667
2SD647
ZTX450
ZTX550
MJE15032
MJE15033
MJE15034
MJE15035
MJE340
MJE350
MJE243
MJE253
BD139
BD140
2SA1930
2SC5171
2SB649
2SD669
2SK214
2SJ77
IRF610
IRF9610
MJL21193
MJL21194
IRFP240
IRFP9240

Matching transistors is really a tough work, sometimes even a nightmare. For differecial pairs it's not a problem, there're almost no waste if there're enough number of transistors. But for complementary it's quite different. Sometimes it's hard to find even only one pair in 500pcs batch. Then you have to buy another batch. We have a large stock of unmatched transistors from ON, Toshiba and IRF.

The prices are modified because of thei high cost of matching, sorry for that but I think you'll understand how difficult it is.
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Old 5th November 2013, 11:40 AM   #2
Stuey is offline Stuey  Australia
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Join Date: Mar 2006
Location: Perth, Western Australia
Do you still offer these, Ray?
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Old 5th November 2013, 11:02 PM   #3
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Join Date: Sep 2011
no they have been sold out for a long time, sorry...
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