| BILL OF MATERIALS FOR 12VDC 50W AC to DC POWER SUPPLY | ||||||
| REF. DESIG- NATION |
DESCRIPTION | VENDOR | PART NUMBER | ALTERNATE VENDOR (SECOND SOURCE) | ALTERNATE PART (SECOND SOURCE) | |
| F1 | Microfuse 5 A PCB-mounted D8.5mm | Schurter | 0034.7122 (MST-U) or 0034.6622 (MXT) | Littlefuse | 0663 005. | |
| J1 | Connector 3-pin | Amp/Tyco | 640445-3 | |||
| P1 | Terminal lug | Keystone Electronics Corp | p/n 1287 | |||
| C1 | Capacitor film X2 type 0.47 uF/250 VAC | Meritek | MPEX 0.47/275VAC (26.5x19x10) | Nissei -Arcotronics | R40-474M275BL | |
| C16,C17 | Capacitor disk 0.005uF/250VAC Y-type | Vishay-Draloric | WYO502MCMCF0K | |||
| R1 | Surge guard (NTC thermistor) 10 Ohm 3A | Keystone/ Thermometrics (814) 834-9140 | CL-110 | Meritek | SCK-10-103 | |
| CR1 | Bridge rectifier 2A/600V L14.7mmx /TH 4mm | Diodes Inc or Lite-On Semi | KBP206G or KBP208G | Digi-Key | KBP206GDI-ND | |
| L1 | Common mode choke | Coilcraft | P3213-A | Falco | SMT02207-0425-4000B | |
| C2 | Capacitor electrolytic 120 uF/400V D22xL30mm | ACOM/Panasonic | EETUQ2G121BA | United ChemiCon 100uF/400V | SMH400VN101M22X30T2 | |
| D1 | IC adjustable shunt regulator | Texas Instrument | TL431CLP or TL431ACLP | STMicro-electronic | TL431CZ or TL431ACZ | |
| U3 | IC PWM UC3844AN DIP-8 package | ST Microelectronics | UC3844AN | Texas Instrument | UC3844AN | |
| Q1 | Transistor MOSFET 11A/800V (TO-220 isolated) | ST Microelectronics | STF11NM80 | |||
| Heat sink with solderable rolls | Aavid Thermalloy | 533002B02551 | ||||
| Thermostat TO-220 normally open 100oC (or 95 oC). | Airpax | 67F100 or 67F095 | ||||
| D7 | Diode Schottky (TO-220AC) | ST Microelectronics | STPS30100ST | |||
| Heat sink | Aavid Thermalloy | 6236b | ||||
| D3,D4,D5 | Rectifier diode ultrafast 1A/600V | ST Microelectronics | STTA106 | |||
| C15, C19 | Capacitor electrolytic 2700uF/16V D12.5xL30mm | UCC | ELXZ160ELL272MK30S | Panasonic | EEUFC1C272L | |
| U1, U2 | Optocoupler transistor with no base connection (DIP-6) | Vishay | CNY-17F-3 | |||
| D2 | Diode Schottky 1A/40V | ST Microelectronics | 1N5819 | On-Semi | 1N5819 | |
| D6 | Diode zener 33V (DO-35) | On-semi | 1N5257B | Microsemi | 1N5257B | |
| R9 | Resistor (metal oxide film L12xD4mm) 20k/ 2W 5% | KOA | MOS2L(or C)T52A203J | Panasonic | 20k/2W | |
| R7,R8 | Resistor 100k 1/2W 5% | Yageo, Panasonic | Digi-Key | |||
| R2 | Resistor 5k 1/4W 5% | Yageo, Panasonic | Digi-Key | |||
| R3,R13, | Resistor 1k 1/4W 2% | Yageo, Panasonic | Digi-Key | |||
| R13 | Resistor 100 1/2W 5% | Yageo, Panasonic | Digi-Key | |||
| R11, R14 | Resistor 2.49k 1/4W 1% | Yageo, Panasonic | Digi-Key | |||
| R4,R10 | Resistor 10 1/2W 5% | Yageo, Panasonic | Digi-Key | |||
| R5 | Resistor 20k 1/4W 5% | |||||
| R6 | Resistor 0.3 Ohm 1W 5% | RCD | PR1R300JB | Digi-Key | AC1W.30TB-ND | |
| R12 | Resistor 100 1/4W 5% | Yageo, Panasonic | ||||
| R15 | Resistor 9.53k 1/4W 1% | Yageo, Panasonic | ||||
| R16 | Resistor 470 Ohm/3W | Panasonic, RCD | ||||
| C7,C9 | Capacitor electrolytic 22uF/35V D5xL11mm | Panasonic | ECA-1VM220 | Digi-Key | P5162-ND | |
| C18 | Capacitor tantalum 1uF/35V | Nemco | TB1-35-1 | Kemet | T350A105K035AS | |
| C6, C12, C18 | Capacitor ceramic or film 0.1uF/25V +/-20% | NIC | NCD105M50Z5U | Surge | STC25Y105 | |
| C3, C5, C10 | Capacitor ceramic disk 2200 pF/500V or 1kV | Surge Components | SHK1kVP222 | NIC | NCD222Z1kVZ5U | |
| C14 | Capacitor ceramic disk 100 pF/100V (or higher) | Surge Components | SHK1kVM101 | NIC | NCD101M500VY5F | |
| C11 | Capacitor ceramic disk 220 pF/100V (or higher) | Surge Components | SHK1kVM221 | NIC | NCD221M500VY5F | |
| C4 | Capacitor ceramic disk 0.022uF/50V | NIC | NCD223M50Z5U | |||
| T1 | POWER TRANSFORMER | Custom made (see list of components below) | ||||
| Powder Core (1.06" toroid, AL=157) | Cheng Sung Corp | CS270125 (Sendust) | Magnetics Inc | 77930-A7 (KoolM) | ||
| Toroid retainer | Lodestone | TR100-B | ||||
| Nylon flat washer outside diameter 0.75"-1.0" | WashersUSA | 16FW500125 | Aaron's Metric Screws | |||
| FEP triple insulated wire AWG#21 | Rubadue | T21A01TXXX-2 | ||||
| FEP triple insulated wire AWG#23 | Rubadue | T23A01TXXX-2 | ||||
| FEP triple insulated wire AWG#28 | Rubadue | T28A01TXXX-2 | ||||
| Tape mylar 0.5" wide | 3M | Aerotape, Permacel | ||||
| J2 | Connector 6-pin | Amp/Tyco | 640445-6 | |||
| SCREW | Tower fasteners | 10-32 X 3/4" PAN HD | ||||
| Screw | Tower fasteners | 4-40 X .375 PAN HD | ||||
| LOCK NUT #4 | Tower fasteners | |||||
| Flat washer for #4 screw | Tower fasteners | |||||
| RTV sealant | Dow Corning | P/n 738 or similar | ||||
| Thermal grease (silicon heatsink compound) | Dow Corning | P/n 340 or similar | ||||
| https://www.smps.us/ | ||||||