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Old 5th January 2012, 01:42 AM   #1
lizo is offline lizo  United States
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Unhappy rca 40409/10

I'm getting ready to replace the 132-153/154 on my mcintosh 2100 circuit board but need help identifying the old part that is still on board rca 038 and 039. Which corresponds to 40409 and 40410? lizo
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Old 5th January 2012, 02:02 AM   #2
WSJ is offline WSJ  United States
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Listed in 1973 RCA data book. What would you like to know? They have a heat sink attached. 40410 PNP, -90V. 40409 NPN, 90V. 3W
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Old 8th January 2012, 11:19 PM   #3
lizo is offline lizo  United States
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thanks for your help!
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Old 20th January 2012, 11:26 PM   #4
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I'm working on my own 2100, and I'm replacing those transistors with Fairchild KSA2690A/KSA1220A.
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