This is a list of components you need to build the OpenTendo NES. You will need some components from the original NES and have to order more modern components. Open interactive_bom.html on a browser to open an interactive BOM which shows you where the component is located on the board.
| Reference | Qty | Part | Description |
|---|---|---|---|
| U5 | 1 | NTSC: RP2C02 PAL: RP2C07 |
PPU |
| U6 | 1 | NTSC: RP2A03 PAL: RP2A07 |
CPU |
| U10 | 1 | 3193A | CIC |
| Q1 | 1 | A937 | Epitaxial planar PNP transistor |
| Q2, Q3 | 2 | C2021 | 3 pin small signal bipolar transistor |
| DA1, DA3 | 2 | DAN601 | 7 pin small signal diode array |
| DA2, DA4 | 2 | UPA64H | 7 pin high speed switching diode array |
| P2 | 1 | Connector | 48 pin expansion port |
| P6 | 1 | Connector | 5 pin connector for the power/reset breakout board |
| Reference | Qty | Part | Description |
|---|---|---|---|
| U5 | 1 | NTSC: UA6528 [1] PAL: UA6528P |
PPU clone |
| U6 | 1 | NTSC: UA6527 [2] PAL: UA6527P |
CPU clone |
| U10 | 1 | NullCIC[3] | Small board to replace CIC |
| Q1 | 1 | 2SA937[4] | Epitaxial planar PNP transistor |
| Q2, Q3 | 2 | 2SC2021[5] | 3 pin small signal bipolar transistor |
| DA1, DA3 | 2 | DAN601[6] | 7 pin small signal diode array |
| P2 | 2 | PPPC241LFBN-RC[7] | 24 Pins Header Connector 0.100" (2.54mm) Through Hole |
Note
[1] While it works as a direct drop-in replacement, it isn't known whether it is compatible with all NES games.
[2] They are known to have different sounding audio due to swapped duty cycles, as such they aren't a 100% identical substitute, they otherwise work though.
[3] NullCIC is optional. Use this if you want to remove the CIC but still have the reset functionality.
[4][5][6] These components are discontinued and difficult to find. If you could find them, we recommend replacing the OEM. If not, the OEM components should still be fine.
[7] If you don't want to use the OEM expansion port, you can replace it with a header pin connector or not put anything at all. OpenTendo should still work without the expansion port.
We recommend using Octopart's BOM tool and import the BOM.csv. This tool makes ordering from multiple Octopart's authorized distributors (Digikey, Mouser, etc.) easier.
| Reference | Qty | Part | Description |
|---|---|---|---|
| RA1 | 1 | 4613X-101-103LF | 10k Ohm ±2% 200mW Bussed 12 Resistor Array 13-SIP |
| RA2 | 1 | 4605X-101-682LF | 6.8k Ohm Bussed 4 Resistor Array 5-SIP |
| R1 | 1 | RNF14FTD1M00 | 1M OHM 1% 1/4W |
| R2, R12 | 2 | CF18JT510R | 510 OHM 5% 1/8W |
| R3, R4 | 2 | CF18JT100R | 100 OHM 5% 1/8W |
| R5 | 1 | CF18JT220R | 220 OHM 5% 1/8W |
| R6 | 1 | CF18JT47K0 | 47K OHM 5% 1/8W |
| R7, R9 | 2 | CF18JT20K0 | 20K OHM 5% 1/8W |
| R8 | 1 | CF18JT12K0 | 12K OHM 5% 1/8W |
| R10 | 1 | CF18JT220K | 220K OHM 5% 1/8W |
| R11 | 1 | CF18JT1K20 | 1.2K OHM 5% 1/8W |
| R13 | 1 | CFR-25JB-52-150K | 150K OHM 5% 1/4W |
| R17 | 1 | CF14JT2K20 | 2.2K OHM 5% 1/4W |
| R18, R19 | 2 | CF18JT1K00 | 1K OHM 5% 1/8W |
| Reference | Qty | Part | Description |
|---|---|---|---|
| BC1, BC2 | 2 | K153K10X7RF5UH5 | 0.015 µF 50V Ceramic Capacitor |
| TC1 | 1 | GKG30015[1] | 6.5-30 pF Capacitor Trimmer |
| C1 | 1 | ECE-A0JKA101I | 100 µF 6.3 V Electrolytic Capacitor |
| C2, C3, C4, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C22, C24, C26, C32, C38, C39, C40 |
20 | K103K10X7RF5UH5 | 10000 pF 50V Ceramic Capacitor |
| C5, C27, C28, C29, C30, C31, C33, C34, C35, C36, C37 |
11 | K331K15X7RF53L2 | 330 pF 50V Ceramic Capacitor |
| C8, C46 | 2 | K104K15X7RF5UH5 | 0.1 µF 50V Ceramic Capacitor |
| C9 | 1 | ECA-1HHG2R2I | 2.2 µF 50 V Electrolytic Capacitor |
| C20, C21, C44 | 3 | K221K15X7RF5TL2 | 220 pF 50V Ceramic Capacitor 2.5mm |
| C23 | 1 | UVR2A010MDD1TD | 1 µF 100 V Electrolytic Capacitor |
| C41 | 1 | FG18C0G1H180JNT00 | 18 pF 50V Ceramic Capacitor |
| C42 | 1 | K150J15C0GF5TL2 | 15 pF 50V Ceramic Capacitor |
| C43, C45 | 2 | K560J15C0GF5TL2[2] | 56 pF 50V Ceramic Capacitor |
Note
[1] You might have to trim the capacitor to get a stable clock (21.47727MHz for NTSC and 26.601712MHz for PAL). If you don't have a way to probe the clock, We recommend just using the X1 and TC1 from the OEM NES.
[2] The OEM is using 51pF for C43 and C45. It's been difficult to find a 51pF Ceramic Capacitor. Using a 56pF is fine and have been tested.
| Reference | Qty | Part | Description |
|---|---|---|---|
| U1, U4 | 2 | 6116SA15SOG[1] | SRAM Chip Async Single 5V 16K-Bit 2K x 8 15ns 24-Pin SOIC |
| U2 | 1 | SN74HC373N | D-Type Transparent Latch 1 Channel 8:8 IC Tri-State 20-PDIP |
| U3 | 1 | SN74HC139N | Decoder/Demultiplexer 1 x 2:4 16-PDIP |
| U7, U8 | 2 | SN74HC368N | Buffer, Inverting 2 Element 2, 4 (Hex) Bit per Element 3-State Output 16-PDIP |
| U9 | 1 | SN74HCU04N | Inverter IC 6 Channel 14-PDIP |
| Reference | Qty | Part | Description |
|---|---|---|---|
| U1, U4 | 2 | 6116SA15TPG | SRAM - Asynchronous Memory IC 16Kb (2K x 8) Parallel 15ns 24-PDIP |
Note
[1] This component is an SOIC. You would need an SOIC to DIP adaptor (PA0009), listed in Others, to be able to use this component. If you're not comfortable working with SOIC, We recommend looking for the alternative 6116SA15TPG or use the SRAM from the OEM NES.
| Reference | Qty | Part | Description |
|---|---|---|---|
| U5, U6 | 2 | ED40DT | 40 (2 x 20) Pos DIP, 0.6" (15.24mm) Row Spacing Socket Tin Through Hole |
| P4, P5 | 2 | S7B-PH-K-S(LF)(SN) | JST PH 2mm 7 Pins Male |
| Reference | Qty | Part | Description |
|---|---|---|---|
| X1 | 1 | NTSC: ECS-214-S-4X PAL: N/A[1] |
NTSC: 21.47727MHz Crystal PAL: 26.601712MHz Crystal |
| X2 | 1 | CSTLS4M00G56-B0 | 4 MHz Ceramic Resonator Built in Capacitor 47 pF |
| D1, D2 | 2 | 1N5231BTR | Zener Diode 5.1 V 500 mW Through Hole |
| FC1 | 1 | B78108S1393K | 39 µH Unshielded Drum Core, Wirewound Inductor 470 mA 1.02Ohm Max Axial |
| FC2 | 1 | 28L0138-10R-10 | 75 Ohms @ 100 MHz 1 Ferrite Bead Axial 5A 10mOhm |
| U1, U4 | 2 | PA0009[2] | SOIC-24 to DIP-24 SMT Adapte |
Note
[1] We couldn't find a good part number for a crystal for PAL system. We recommend searching the internet to find a 26.601712MHz crystal for PAL.
[2] You only need this adaptor if you're using the 6116SA15SOG SRAM. When using this adaptor, you will need additional header connector (PPPC241LFBN-RC).