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15th April 2010, 08:08 AM
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#1 |
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diyAudio Member
Join Date: Aug 2007
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Emergency! Please help me choose 2SA1216/2SC2922 or 2SA1295/ 2SC3264 transistor
Dear every one!
Please tell me the difference in the transistor 2SA1216/2SC2922 and 2SA1295/ 2SC3264. I want to use them to DIY some high quality amplifier. In the datasheet, they seem identical except for differences in voltage, 2SA1295/3264 have withstand voltages ( max 230Volt ) greater than 2SA1216/2922 ( max 180Volt ), but my amplifier running under +/-70VDC. For the best performance please guide me choose the one? Is the 2SA1295/3264 are low price of 2SA1216/2922 version? I will oder from Profusionplc: 2SA1216Y Technical Specification: please see picture Thanks and best regards Good day!
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RFT 7186 |
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15th April 2010, 09:52 AM
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#2 |
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diyAudio Member
Join Date: Aug 2007
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In Switching mode, 2SA1216/C2922 have Characteristics better than A1295/C3264. It has Ton, Tstg, Tr and impedance is lower, double Colecter current. It mean speed, dynamic and dumping factor in curcuit is better...
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RFT 7186 |
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15th April 2010, 09:56 AM
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#3 |
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diyAudio Member
Join Date: May 2008
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Comparing 2sa1216 to 2sa1295, the first one has a better current gain linearity.
Hfe is flat untill 5A. Ft is a bit higher too. Though, I have built an amp using 5 pairs of 3264/1295 of which i am very pleased. Last edited by bobodioulasso; 15th April 2010 at 10:01 AM. |
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15th April 2010, 01:23 PM
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#4 |
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diyAudio Member
Join Date: Nov 2009
Location: Kudus, & Malang
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Hey don't dismiss their thermal resistant.
A1295 has a bit better thermal resistant than A1216. Also there already A1494 with much better thermal resistant. It is SANKEN superiority. It affect greatly on its reliability. |
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15th April 2010, 02:19 PM
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#5 |
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diyAudio Member
Join Date: Feb 2004
Location: Recife - Brasil Northeast
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I have both at my home..used both several times
I have burned some of them, 2SC2922 and 2SC3264.
To me, no doubts, the best one is 2SC2922. regards, Carlos
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Try to build an amplifier folks ... it is pure adrenaline! |
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15th April 2010, 04:39 PM
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#6 | |
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diyAudio Member
Join Date: Mar 2003
Location: Sibenik, Croatia
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Quote:
which design did you use? There are very few designs out there with 5 pairs of Sanken 2SA1295/2SC3264. Rotel RB1090 is one of them. Good amp. Unfortunately many transistors in this amp are obsolete, which means, very hard to find and expensive. 
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15th April 2010, 05:49 PM
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#7 |
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diyAudio Member
Join Date: May 2008
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You are right.
I used a lme49810 driver chip and the RB 1090 output stage + one pair, without the predrivers. |
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16th April 2010, 03:38 AM
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#8 |
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diyAudio Member
Join Date: Aug 2007
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thanks for all regards!
Sori i don't find "EDIT YOUR POST" so three picture is overlap. Dear HighTec, Rotel RB1090 seem has dumping factor 1000, very
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RFT 7186 |
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16th April 2010, 01:43 PM
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#9 | |
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diyAudio Member
Join Date: Mar 2003
Location: Sibenik, Croatia
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Quote:
 Hi CafeNovember, you haven't finished your sentence m8. Very what? 
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16th April 2010, 05:13 PM
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#10 |
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diyAudio Member
Join Date: May 2008
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This is my schematic
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