4 layers340.4 × 215.9 mm Retro, the printed circuit board in 3D

Retro

Size: 340.4 × 215.9 mm
Copper layers: 4
Thickness: 1.6 mm
Parts: 388
Nets: 590
Pads: 2,361
Tracks, vias: 4,936, 598
Pours: 5
Routed: Yes
KiCad: KiCad 9.0 (file 20241229)
Created: 28 Aug 2023
Updated: 27 Sep 2026

Overview

Retro is an open-source printed circuit board by bytemind-dev, from the bytemind-dev/breakout repository on GitHub. It is a 4-layer board of 340.4 × 215.9 mm with 388 parts on 590 nets, routed with 4,936 tracks and 598 vias.

It is built around the MCR106-6G. Its parts include 45 capacitors, 31 resistors, 10 diodes, 10 connectors and 9 transistors. It belongs with the retro computing and games boards of this library.

Main components

MCR106-6G
TO-225-3TO-225-3 Thyristors (SCR)/Modules ROHSLittelfuseTRIACs

Parts

388

Qty	Value	Footprint	References
106	0.1uF	Breakout:C_Axial-0.3in	cA1, cA2, cA3, cA4, cA5, cA6, cA7, cA8, cA9, cB1, cB2, cB3, cB4, cB5, cB6, cB7 +90
28	4.7K	Breakout:R_Axial-0.3in	R59, R61, R1, R10, R11, R12, R13, R15, R18, R100, R101, R103, R104, R105, R106, R107 +12
18	Conn_01x08_Pin	Breakout:Head_1x8-0.1in	xB4, xB5, xB7, xB8, xBIAS1, xC7, xC8, xD4, xF1, xF6, xH1, xJ1, xK1, xL1, xL8, xM1 +2
12	7474	Breakout:DIP-14-0.3in	A3, A6, D3, D5, E6, E8, F4, F5, F8, H8, H9, K8
11	470uF	Breakout:CP_Radial-0.2in-R0.4in	C23, C31, C101, C102, C103, C104, C105, C106, C107, C108, C109
11	74161	Breakout:DIP-16-0.3in	B4, B7, B8, C7, C8, D4, F1, K1, L1, M1, N1
9	7408	Breakout:DIP-14-0.3in	A4, B9, C1, D6, E5, H2, H7, K4, N7
9	7486	Breakout:DIP-14-0.3in	C4, C6, E2, K2, K7, L2, L7, M3, N3
8	0.1uF	Breakout:C_Disc-0.3in	C16, C17, C19, C28, C30, C32, C34, C100
8	1uF	Breakout:CP_Radial-0.1in-R0.2in	C14, C15, C20, C21, C24, C26, C27, C29
8	330	Breakout:R_Axial-0.3in	*R60, R26, R28, R29, R41, R43, R51, R52
7	1N914	Breakout:D_Axial-0.3in	CR9, CR10, CR3, CR4, CR5, CR6, CR7
7	7400	Breakout:DIP-14-0.3in	A5, B6, C2, C3, D8, H4, L9
6	47K	Breakout:R_Axial-0.3in	R22, R23, R36, R37, R38, R39
6	7404	Breakout:DIP-14-0.3in	C5, E1, E9, F9, J2, M9
6	74151	Breakout:DIP-16-0.3in	H5, J4, K5, L5, M5, N5
6	74160	Breakout:DIP-16-0.3in	H6, J6, K6, L6, M6, N6
6	MountingHole	Breakout:Hole_4.3mm-M4	Hole1, Hole2, Hole3, Hole4, Hole5, Hole6
4	7402	Breakout:DIP-14-0.3in	B3, E3, E7, J3
4	7411	Breakout:DIP-14-0.3in	D7, F2, L4, N4
4	74123	Breakout:DIP-16-0.3in	A7, A8, F3, N8
3	0.001uF	Breakout:C_Disc-0.3in	*C38, C36, C99
3	0.01uF	Breakout:C_Disc-0.3in	*C40, C33, C35
3	100	Breakout:R_Axial-0.3in	R25, R27, R32
3	150	Breakout:R_Axial-0.3in	R14, R21, R40
3	220	Breakout:R_Axial-0.3in	R17, R20, R31
3	2N2222	Breakout:TO-92	Q104, Q105, Q106
3	74193	Breakout:DIP-16-0.3in	B5, F6, L8
2	100pF	Breakout:C_Disc-0.3in	C-4, C18
2	10uF	Breakout:CP_Radial-0.1in-R0.2in	C22, C25
2	12K	Breakout:R_Axial-0.3in	R53, R102
2	1N4001	Breakout:D_Axial-0.3in	CR8, CR101
2	1N5400	Breakout:DO-201_0.6in_H	CR1, CR2
2	27K	Breakout:R_Axial-0.3in	R47, R48
2	2N4401	Breakout:TO-92	Q2, Q3
2	330pF	Breakout:C_Disc-0.3in	*C39, C37
2	470	Breakout:R_Axial-0.3in	R16, R19
2	555	Breakout:DIP-8-0.3in	B2, C9
2	7410	Breakout:DIP-14-0.3in	J9, M4
2	7427	Breakout:DIP-14-0.3in	H3, M8
2	74279	Breakout:DIP-16-0.3in	F7, J8
2	74283	Breakout:DIP-16-0.3in	M2, N2
2	7432	Breakout:DIP-14-0.3in	D2, E4
2	MCR106	Breakout:TO-225AA-3_V	Q4, Q5
2	Spare16	Breakout:DIP-16-0.3in	A1, B1
1	+12V@xA	Breakout:BarrelJack_2.1x5.5mm	J104
1	+5V	Breakout:LED_D5.0mm_Red	D101
1	1.8M	Breakout:R_Axial-0.3in	R54
1	100uF	Breakout:CP_Radial-0.2in-R0.4in	C92
1	10K	Breakout:R_POT-Bourns-PTV09A-1-V	R50
1	14.318MHz	Breakout:Crystal_0.2in_V	Y1
1	2.7Ω	Breakout:R_Axial-0.3in	R49
1	22K	Breakout:R_Axial-0.3in	R46
1	2N4403	Breakout:TO-92	Q1
1	2N5190	Breakout:TO-126-3_V	Q6
1	2PLGM	Breakout:LED_D5.0mm_Green	D104
1	3.9K	Breakout:R_Axial-0.3in	R42
1	33K	Breakout:R_Axial-0.3in	R2
1	4016	Breakout:DIP-14-0.3in	D9
1	47	Breakout:R_Axial-0.3in	R33
1	4700uF	Breakout:CP_Radial-10mm-R35mm	C-3
1	5.6K	Breakout:R_Axial-0.3in	R3
1	560	Breakout:R_Axial-0.3in	R55
1	5V@3A	Breakout:BarrelJack_2.1x5.5mm	J103
1	68K	Breakout:R_Axial-0.3in	R45
1	74107	Breakout:DIP-14-0.3in	K9
1	74175	Breakout:DIP-16-0.3in	J1
1	74192	Breakout:DIP-16-0.3in	N9
1	7420	Breakout:DIP-14-0.3in	J7
1	7430	Breakout:DIP-14-0.3in	K3
1	7437	Breakout:DIP-14-0.3in	H1
1	7448PLD	Breakout:DIP-20-0.3in	J5
1	82S16	Breakout:DIP-16-0.3in	L3
1	ATTR	Breakout:LED_D5.0mm_Green	D105
1	Audio	Breakout:Conn_RNC-CUI-RCJ-045	J109
1	Balls-Per-Play	Breakout:Head_2x3-0.1in	S4
1	COIN	Breakout:SW_TACT-6.5x4.5mm	SW103
1	Conn25P	Breakout:Head_1x25-0.1in	J102
1	Conn44P	Breakout:Conn_Edge_2x22-0.156in	J101
1	Credits/Coin	Breakout:Head_1x3_0.1in	S3

The 374 most common of 388 parts.

Questions

How big is the Retro PCB?

It measures 340.4 × 215.9 mm and has 4 copper layers, 1.6 mm thick.

What parts does the Retro use?

388 parts, built around the MCR106-6G. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Retro KiCad files?

From the bytemind-dev/breakout repository on GitHub, at the commit this page was made from: the board is Retro/KiCad/Retro/Retro.kicad_pcb and its schematic Retro/KiCad/Control/Control.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Retro design in my own project?

Its repository states no licence, so its author keeps all rights: ask bytemind-dev before reusing the design.

Category and platform

Retro computing and games

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/bytemind-dev-breakout-retro" title="Retro in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/bytemind-dev-breakout-retro.jpg" alt="Retro" width="1200" height="900">

A picture that opens the board, for a README

[![Retro](https://pcbkit.io/embed/boards/bytemind-dev-breakout-retro.jpg?size=s)](https://pcbkit.io/boards/bytemind-dev-breakout-retro)

Source

Repository: bytemind-dev/breakout
Board file: Retro/KiCad/Retro/Retro.kicad_pcb
Commit: 45cf4e0
Licence: Not stated

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