STK-0050 replacement

2 years ago 2494
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Sanyo DCA 411 aplifier uses old STK-0050 IC for delivering the main output to speakers. Since STK-0050 is no longer in production and replacements that you can buy are of questionable origins and quality.

I found this thread about STK-0050 replacement and I modified the PCB a little so it will fit in DCA 411 amplifier on the original heat sinks.





ID Name Designator Footprint Quantity
1 220pF C1,C3 RAD-0.1 2
2 RL202 D1,D2 DO-41 2
3 BD139 Q5 TO-126 1
4 MJE15032G Q3 TO-220 1
5 MJE15033G Q2 TO-220(TO-220-3) 1
6 NJW3281G Q4 TO-3P 1
7 NJW1302G Q1 ONSC-TO-3P-3LD-3-340AB-01 1
8 500Ω R7 RES-ADJ_3362S 1
9 4Ω7 1W R4,R3 RES-TH_BD4.0-L11.5-P15.50-D0.7 2
10 3k9 1/2W R8 AXIAL-0.3EZ 1
11 75Ω 1/2W R2 RES-TH_BD4.0-L11.5-P15.50-D0.7 1
12 4Ω7 1/2W R5,R1 RES-TH_BD2.2-L6.5-P10.50-D0.6 2
13 WJ2EDGVC-5.08-3P P1,P2 WJ2EDGVC-5.08-3P 2
14 39Ω 1/2W R9 AXIAL-0.3EZ 1
15 470nF C2 CAP-TH_D1.00-L7.20-W4.50-PITCH5.00 1
16 1k2 1/2W R6 RES-TH_BD3.3-L9.0-P13.00-D0.6 1


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