KTC3228 and KTA1275 substitutions - diyAudio
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Old 25th October 2012, 12:25 AM   #1
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Default KTC3228 and KTA1275 substitutions

does anyone have part numbers for substitutions for the obsolete transistors KTC3228 and KTA1275 ?
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Old 25th October 2012, 01:53 AM   #2
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how are they being used?
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Old 25th October 2012, 02:36 AM   #3
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Drivers on the power supply board on an AudioQue 1200.1 D
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Old 25th October 2012, 02:41 AM   #4
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This same scenario

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Old 25th October 2012, 03:00 AM   #5
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I'd use the BD139 and BD140.
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Old 30th October 2012, 01:48 AM   #6
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Is it okay too using Toshiba 2SA1930 & 2SC5171?
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Old 30th October 2012, 09:19 PM   #7
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Those will likely be OK but you'll have to install them facing the opposite direction since their pin configuration is reversed.
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