2 layers213.1 × 130 mm Issue3, the printed circuit board in 3D

Issue3

ZX Spectrum 48K Issue 3

Size: 213.1 × 130 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 199
Nets: 169
Pads: 920
Tracks, vias: 6,891, 455
Routed: Yes
KiCad: KiCad 10.0 (file 20260206)
Created: 27 Oct 2026
Updated: 27 Oct 2026

Overview

Issue3 is an open-source printed circuit board by liveboxandy, from the liveboxandy/ZX-Spectrum-48K-Issue-3 repository on GitHub, published under the CC0-1.0 licence. It is a 2-layer board of 213.1 × 130 mm with 199 parts on 169 nets, routed with 6,891 tracks and 455 vias.

It is built around the BC184, BZX85C5V1 and L7805, with the ZTX450 among its other parts. Its parts include 74 resistors, 57 capacitors, 26 ICs, 14 diodes and 2 crystals.

Main components

README

README.md

Kicad 10 project used to create an ibom to assist in the debugging of faulty boards. Use at your own risk.

Project files

Show this board on your page

https://pcbkit.io/boards/liveboxandy/ZX-Spectrum-48K-Issue-3

The board's own page, for a message or a post.

Source

Repository: liveboxandy/ZX-Spectrum-48K-Issue-3
Board file: issue3.kicad_pcb
Commit: 504b5cf
Licence: CC0-1.0

Parts

199

Qty	Value	Footprint	References
26	47nF	Mod:C_Axial_L3.8mm_D2.6mm_P12.70mm_Horizontal	C1, C2, C3, C4, C5, C26, C29, C30, C33, C40, C41, C42, C48, C49, C55, C56 +10
12	10K	Mod:R_Yageo_L3.6mm_D1.6mm_P12.70mm_Horizontal	R28, R29, R30, R49, R65, R66, R67, R68, R69, R72, R74, R75
11	1N4148	Mod:D_DO-35_SOD27_P12.70mm_Horizontal	D1, D2, D3, D4, D5, D6, D7, D8, D9, D11, D12
11	470	Mod:R_Yageo_L3.6mm_D1.6mm_P12.70mm_Horizontal	R1, R2, R3, R4, R5, R6, R7, R8, R26, R27, R78
9	1K	Mod:R_Yageo_L3.6mm_D1.6mm_P12.70mm_Horizontal	R42, R45, R46, R47, R56, R58, R63, R76, R77
8	330	Mod:R_Yageo_L3.6mm_D1.6mm_P12.70mm_Horizontal	R17, R18, R19, R20, R21, R22, R23, R57
8	4116	Mod:DIP-16_W7.62mm_Socket	IC6, IC7, IC8, IC9, IC10, IC11, IC12, IC13
8	4532	Mod:DIP-16_W7.62mm_Socket	IC15, IC16, IC17, IC18, IC19, IC20, IC21, IC22
8	8k2	Mod:R_Yageo_L3.6mm_D1.6mm_P12.70mm_Horizontal	R9, R10, R11, R12, R13, R14, R15, R16
6	100nF	Mod:C_Axial_L3.8mm_D2.6mm_P12.70mm_Horizontal	C43, C68, C69, C70, C71, C75
5	22uF	Mod:CP_Axial_L11.0mm_D6.0mm_P20.32mm_Horizontal	C28, C34, C47, C50, C65
4	LS157	Mod:DIP-16_W7.62mm_Socket	IC3, IC4, IC25, IC26
4	ZTX313	Mod:TO-92Flat	TR1, TR2, TR3, TR6
3	15	Mod:R_Yageo_L3.6mm_D1.6mm_P12.70mm_Horizontal	R61, R62, R64
3	2K2	Mod:R_Yageo_L3.6mm_D1.6mm_P12.70mm_Horizontal	R48, R51, R52
2	100nF	Mod:C_Axial_L3.8mm_D2.6mm_P12.40mm_Horizontal	C31, C32
2	100pF	Mod:C_Axial_L3.8mm_D2.6mm_P12.70mm_Horizontal	C64, C67
2	100uF	Mod:CP_Axial_L11.0mm_D6.0mm_P20.32mm_Horizontal	C44, C45
2	150pF	Mod:C_Axial_L3.8mm_D2.6mm_P12.70mm_Horizontal	C52, C53
2	16pF	Mod:C_Axial_L3.8mm_D2.6mm_P12.70mm_Horizontal	C72, C73
2	1k	Mod:R_Yageo_L3.6mm_D1.6mm_P12.70mm_Horizontal	R24, R73
2	220	Mod:R_Yageo_L3.6mm_D1.6mm_P12.70mm_Horizontal	R70, R71
2	33pF	Mod:C_Axial_L3.8mm_D2.6mm_P12.70mm_Horizontal	C37, C38
2	BC184	Mod:TR9	TR8, TR9
1	100	Mod:R_Yageo_L3.6mm_D1.6mm_P12.70mm_Horizontal	R32
1	100K	Mod:R_Yageo_L3.6mm_D1.6mm_P12.70mm_Horizontal	R54
1	10K	Mod:R_Yageo_L3.6mm_D1.6mm_P12.40mm_Horizontal	R35
1	10nF	Mod:C_Axial_L3.8mm_D2.6mm_P12.70mm_Horizontal	C39
1	10nF	Mod:C_Axial_L3.8mm_D2.6mm_P12.40mm_Horizontal	C35
1	14Mhz	Mod:X1	X1
1	15	Mod:R_Axial_DIN0516_L15.5mm_D5.0mm_P22.60mm_Horizontal	R34
1	180	Mod:R_Yageo_L3.6mm_D1.6mm_P12.70mm_Horizontal	R25
1	1K	Mod:R_Yageo_L3.6mm_D1.6mm_P12.40mm_Horizontal	R37
1	1K8	Mod:R_Yageo_L3.6mm_D1.6mm_P12.70mm_Horizontal	R59
1	1N4148	Mod:D_DO-35_SOD27_P12.40mm_Horizontal	D13
1	1uF	Mod:CP_Axial_L11.0mm_D6.0mm_P20.32mm_Horizontal	C46
1	1uF	Mod:CP_Axial_L11.0mm_D6.0mm_P20.00mm_Horizontal	C27
1	220K	Mod:R_Yageo_L3.6mm_D1.6mm_P12.70mm_Horizontal	R31
1	22uF	Mod:CP_Axial_L11.0mm_D6.0mm_P20.00mm_Horizontal	C25
1	270R	Mod:R_Yageo_L3.6mm_D1.6mm_P12.70mm_Horizontal	R60
1	390R	Mod:R_Yageo_L3.6mm_D1.6mm_P12.70mm_Horizontal	R53
1	3K	Mod:R_Yageo_L3.6mm_D1.6mm_P12.70mm_Horizontal	R43
1	4.43Mhz	Mod:X2	X2
1	4.7uF	Mod:CP_Axial_L11.0mm_D6.0mm_P20.32mm_Horizontal	C74
1	470pF	Mod:C_Axial_L3.8mm_D2.6mm_P12.70mm_Horizontal	C54
1	47pF	Mod:C_Axial_L3.8mm_D2.6mm_P12.70mm_Horizontal	C63
1	4K7	Mod:R_Yageo_L3.6mm_D1.6mm_P12.70mm_Horizontal	R50
1	56	Mod:R_Yageo_L3.6mm_D1.6mm_P12.70mm_Horizontal	R55
1	5K1	Mod:R_Yageo_L3.6mm_D1.6mm_P12.70mm_Horizontal	R44
1	680	Mod:R_Yageo_L3.6mm_D1.6mm_P12.70mm_Horizontal	R33
1	680	Mod:R_Yageo_L3.6mm_D1.6mm_P12.40mm_Horizontal	R36
1	BA157	Mod:D_DO-35_SOD27_P12.70mm_Horizontal	D15
1	BZX85C5V1	Mod:D_DO-35_SOD27_P12.70mm_Horizontal	D16
1	Barrel_Jack_MountingPin	Mod:BarrelJack_Horizontal	J7
1	EAR1	Mod:3.5mm_socket	EAR1
1	Edge_Connector	Mod:Edge Connector	E1
1	JROM	Mod:ROM_WireLink	JROM1
1	Keyboard5	Mod:Keyboard5	KB1
1	Keyboard8	Mod:Keyboard8	KB2
1	L7805	Mod:TO-220-3_Horizontal_TabDown	REG1
1	LM1889	Mod:DIP-18_W7.62mm_Socket	IC14
1	LS00	Mod:DIP-14_W7.62mm_Socket	IC24
1	LS32	Mod:DIP-14_W7.62mm_Socket	IC23
1	MIC1	Mod:3.5mm_socket	MIC1
1	OKI	Mod:Wire_Link_7.62mm	OKI1
1	OKI-H	Mod:Wire_Link_7.62mm	OKI-H1
1	OKI-L	Mod:Wire_Link_7.62mm	OKI-L1
1	ROM	Mod:DIP-28_W15.24mm_Socket	IC5
1	Speaker	Mod:Speaker	LS1
1	TI	Mod:Wire_Link_7.62mm	TI1
1	TI-3	Mod:Wire_Link_7.62mm	TI-3
1	TI-4	Mod:Wire_Link_7.62mm	TI-4
1	TV	Mod:Modulator	TV1
1	Transformer_1P_1S	Mod:Coil	T1
1	ULA	Mod:DIP-40_W15.24mm_Socket	IC1
1	Z80	Mod:DIP-40_W15.24mm_Socket	IC2
1	ZTX315	Mod:TO-92Flat	TR5
1	ZTX450	Mod:TO-92Flat	TR7
1	ZTX650	Mod:TO-92Flat	TR4

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273 parts

Questions

How big is the Issue3 PCB?

It measures 213.1 × 130 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Issue3 use?

199 parts, built around the BC184, BZX85C5V1, L7805 and ZTX450. 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 Issue3 KiCad files?

From the liveboxandy/ZX-Spectrum-48K-Issue-3 repository on GitHub, at the commit this page was made from: the board is issue3.kicad_pcb and its schematic issue3.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Issue3 design in my own project?

Its repository publishes it under the CC0-1.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).