PCB replacement for the Commodore C 64 PSU 251053-11

Rev 0.3.1: with Murata OKR-T/3-W12 or Traco TSR 3-1250

U1 Murata OKR-T/3-W12-C, DC/DC-converter, print 3 A 15 W

alt U1 Traco TSR 3-1250 (C5, C6, C7 not recommended)

D1 bridge rectifier SIL-4 100 V 8 A -> Diotec KBU8B

C1 electrolytic capacitor radial 4700 μF 25 V RM7,5 dia. 18 mm -> Wuerth Elektronik WCAP-ATG5 860020480026

C2 electrolytic capacitor radial 220 μF 25 V RM5,0 dia. 8 mm -> Wuerth Elektronik WCAP-ATLI 860080474010

C3,4 electrolytic capacitor radial 150 μF 25 V RM5,0 dia. 8 mm -> Wuerth Elektronik WCAP-ATLI 860080474008

C5, C7 ceramic capacitor SMD 1206 oder 1210 22 μF 25 V 20 % X5R oder X7R

C6 ceramic capacitor SMD 1206 oder 1210 1 μF 25 V 20 % X5R oder X7R

D2 zener diode DO-41 axial zener-voltage 6.2 V power (max) P(TOT) 1.3 W -> Diotec ZPY6.2

F1, F2 fuse holder 5x20mm, max. 6,3A-500V -> 2x ESKA 120.800H

F1, F2 microfuse (B x L) 5 mm x 20 mm 1.6 A 250 V Traege -T- contens 10 pcs. -> ESKA 522.519

L1 inductance encapsulated radial RM5,0 8.2 μH -> Panasonic ELC09D8R2F

RV3 trimmer 20-Gang 19mm 500 Ohm -> Weltron WEL3006-1-501-LF

RV1,RV2 disc varistor 30VAC 0,6W RM 7,5 -> Epcos S10K20 B72210S200K10

note:

C1 max. diameter 18mm

C2,C3,C4 max. diameter 8mm

C2,C3,C4 low impedance