ZX Spectrum Issue 3B Parts List

Bill Of Materials

Ceramic Capacitors

Value	Qty	Supplier
100nf	9	https://www.rapidonline.com/suntan-ts170r2a104ksbba0r-0-1uf-10-100v-x7r-2-54mm-radial-ceramic-capacitor-11-3442 https://www.switchelectronics.co.uk/100nf-5mm-ceramic-disc-20-y5v-25v-capacitor-ts15001e104msbfbor-suntan
100pf	2	https://www.rapidonline.com/suntan-ts15001h101ksbsa0r-100pf-10-50v-sl-2-5mm-ceramic-disc-capacitor-08-0140 https://www.switchelectronics.co.uk/100pf-2-5mm-ceramic-disc-10-sl-50v-capacitor-ts15001h101ksbsa0r-suntan
10nf	2	https://www.rapidonline.com/suntan-ts170r2a103ksbbb0r-0-01uf-10-100v-x7r-5-08mm-radial-ceramic-capacitor-11-3444 https://www.switchelectronics.co.uk/10nf-5mm-ceramic-disc-20-80-z5v-50v-capacitor-ts15001h103zsbvb0r-suntan
150pf	2	https://www.rapidonline.com/suntan-ts15001h151ksbsa0r-150pf-10-50v-sl-2-5mm-ceramic-disc-capacitor-08-0150 https://www.switchelectronics.co.uk/150pf-2-5mm-ceramic-disc-10-sl-50v-capacitor-ts15001h151ksbsa0r-suntan
16pf	2	https://www.switchelectronics.co.uk/15pf-2-5mm-ceramic-disc-10-npo-50v-capacitor-ts15001h150ksbna0r-suntan The service manual lists the actual value as 16pf – these are no longer available. The tolerance though means 15pf are usable.
33pf	2	https://www.rapidonline.com/suntan-ts170r2a330jsbna0r-33pf-5-100v-npo-p-2-54mm-radial-ceramic-capacitor-11-3428 https://www.switchelectronics.co.uk/33pf-2-5mm-ceramic-disc-10-sl-50v-capacitor-ts15001h330ksbsa0r-suntan
47nf	26	https://cpc.farnell.com/unbranded/mcrr25473x7rk0050/capacitor-47nf-50v/dp/CA05513 https://www.switchelectronics.co.uk/47nf-5mm-ceramic-disc-20-y5u-50v-capacitor-ts15001h473msbub0r-suntan https://www.mouser.co.uk/ProductDetail/Vishay-BC-Components/A473K15X7RF5UAAP?qs=DPoM0jnrROV6nIvcdSb9zg%3D%3D
560pf	1	https://www.switchelectronics.co.uk/560pf-2-5mm-ceramic-disc-10-y5p-50v-capacitor-ts15001h561ksbpa0r-suntan

Electrolytic Capacitors

Value	Min Voltage	Qty	Supplier
100uf	16v	2	https://www.rapidonline.com/suntan-ts13dj1c101msb0a0r-100uf-16v-low-imp-electrolytic-capacitor-11-3666 https://www.switchelectronics.co.uk/100uf-16v-radial-aluminium-electrolytic-capacitor-20
1uf	50v	2	https://www.rapidonline.com/jb-capacitors-jab1j010m00000630130000b1uf-63v-20-axial-alum-elec-capacitor-11-0776 https://uk.rs-online.com/web/p/aluminium-capacitors/7076269/
22uf	10v	6	https://www.rapidonline.com/jb-capacitors-jab1e220m00000630130000b-22uf-25v-20-axial-alum-elec-capacitor-11-0780 https://uk.rs-online.com/web/p/aluminium-capacitors/1085260
4.7uf	5v	1	https://www.rapidonline.com/jb-capacitors-jab1j4r7m00000630130000b-4-7uf-63v-20-axial-alum-elec-capacitor-11-0778 https://www.rapidonline.com/forever-4-7uf-20-50v-85-c-7mm-micro-miniature-radial-aluminium-electrolytic-11-0865

Resistors

Value	Qty	Supplier
100k	1	https://uk.farnell.com/multicomp/mcf-0-25w-100k/res-100k-5-250mw-axial-carbon/dp/9339078
100R	1	https://uk.farnell.com/multicomp/mcf-0-25w-100r/res-100r-5-250mw-axial-carbon/dp/9339043
180R	1
10k	13	https://uk.farnell.com/multicomp/mcf-0-25w-10k/res-10k-5-250mw-axial-carbon-film/dp/9339060
15R	4	https://uk.farnell.com/panasonic/erg12sj150/res-15r-5-500mw-axial-metal-oxide/dp/2324446
1k	11	https://uk.farnell.com/multicomp/mccfr0w4j0102a50/res-1k-5-250mw-axial-carbon-film/dp/1652634
1k8	1	https://uk.farnell.com/yageo/mfr-25fte52-1k8/res-1k8-1-0-25w-axial-metal-film/dp/3496915
220k	1	https://uk.farnell.com/multicomp/mcf-0-25w-220k/res-220k-5-250mw-axial-carbon/dp/9339329
220R	2	https://uk.farnell.com/yageo/cfr-25jt-52-220r/res-220r-5-0-25w-axial-carbon/dp/3496810
3.3k	1	https://uk.farnell.com/multicomp/mcf-0-25w-3k3/res-3k3-5-250mw-axial-carbon-film/dp/9339426
2k2	3	https://uk.farnell.com/multicomp/mcf-0-25w-2k2/res-2k2-5-250mw-axial-carbon-film/dp/9339302
330R	7	https://uk.farnell.com/multicomp/mcf-0-25w-330r/res-330r-5-250mw-axial-carbon/dp/9339418
390R	1	https://uk.farnell.com/te-connectivity/cfr25j390r/res-390r-5-330mw-axial-carbon/dp/2329671
39R	1	https://uk.farnell.com/multicomp/mcf-0-25w-39r/res-39r-5-250mw-axial-carbon-film/dp/9339469
3k	1	https://uk.farnell.com/multicomp/mf25-3k/res-3k-1-250mw-axial-metal-film/dp/9341692
470R	11	https://uk.farnell.com/multicomp/mcf-0-25w-470r/res-470r-5-250mw-axial-carbon/dp/9339531 https://www.switchelectronics.co.uk/470r-0-25w-carbon-film-resistor
4k7	1	https://uk.farnell.com/koa-speer-electronics/cfs1-4ct52r472j/res-4k7-0-25w-axial-carbon-film/dp/3540800
56R	1	https://uk.farnell.com/multicomp/mcf-0-25w-56r/res-56r-5-250mw-axial-carbon-film/dp/9339582
5k1	1	https://uk.farnell.com/koa-speer-electronics/cfs1-4ct52r512g/res-5k1-0-25w-axial-carbon-film/dp/3540808
680R	2	https://uk.farnell.com/multicomp/mcf-0-25w-680r/res-680r-5-250mw-axial-carbon/dp/9339655
68R	1	https://uk.farnell.com/te-connectivity/cfr16j68r/res-68r-5-250mw-axial-carbon-film/dp/2329547
8K2	8	https://uk.farnell.com/multicomp/mcf-0-25w-8k2/res-8k2-5-250mw-axial-carbon-film/dp/9339728

Transistors

Value	Qty	Supplier
2N4401	1	https://www.switchelectronics.co.uk/2n4401-bipolar-npn-transistor-40v-600ma-to92 https://www.rapidonline.com/dc-components-2n4401-transistor-npn-to92-40v-81-0486
BC549	5	https://uk.farnell.com/multicomp/bc549c/transistor-npn-30v-to-92/dp/1574382 https://www.switchelectronics.co.uk/bc549c-bipolar-npn-30v-transistor-to92 https://www.rapidonline.com/trusemi-bc549c-to92-30v-npn-transistor-81-0441
ZTX651	1	https://uk.rs-online.com/web/p/bipolar-transistors/0295501 https://www.rapidonline.com/diodes-inc-ztx651-transistor-npn-60v-2a-eline-81-0224
ZTX753	1	https://www.cricklewoodelectronics.com/ZTX753.html https://www.rapidonline.com/zetex-ztx753-100v-pnp-highcurrent-transistor-81-0238
BC337	1	https://www.rapidonline.com/diotec-bc337-25-to92-2-54-pitch-45v-npn-transistor-81-0397 https://www.switchelectronics.co.uk/bc337-40-npn-transistor-45v-to-92

Diodes

Value	Qty	Supplier
1N4148	12	https://uk.farnell.com/multicomp/1n4148-do-35/diode-small-sig-100v-0-15a-do/dp/2675146
5V1	1	https://uk.farnell.com/on-semiconductor/1n4733a/diode-zener-1w-5-1v-do41/dp/1700825
BA157	1	https://uk.farnell.com/multicomp-pro/ba157g/rectifier-single-1a-400v-do-41/dp/3226312

Crystals

Value	Qty	Supplier
14MHz	1	https://uk.farnell.com/ael-crystals/x14m000000l001/crystal-14mhz/dp/9509488 https://www.retroleum.co.uk/spectrum-misc
4.43MHz	1	https://www.mouser.co.uk/ProductDetail/Wurth-Elektronik/830003099B

Chips

Name	Qty	Supplier
Z80	1	http://retrorevivalshop.co.uk/index.php?main_page=product_info&cPath=5&products_id=16 https://www.retroleum.co.uk/zx-spectrum-chips
ULA	1	http://retrorevivalshop.co.uk/index.php?main_page=product_info&cPath=5&products_id=561 https://zxrenew.co.uk/ZX-Spectrum-replacement-ULA-p151287223 https://www.tindie.com/products/charlieingley/vla82-spectrum-48k-ula-replacement/
Lower Ram Replacement Board	1	https://www.retroleum.co.uk/zx-spectrum-chips
Upper Ram Replacement Board	1	https://www.retroleum.co.uk/zx-spectrum-chips
LM1889N (The only chip we can’t find a modern replacement for)	1	https://www.retroleum.co.uk/zx-spectrum-chips
74HCT157	4	https://www.retroleum.co.uk/zx-spectrum-chips https://www.mouser.co.uk/ProductDetail/Texas-Instruments/SN74HCT157N?qs=spW5eSrOWB5Yf%2FSklqG3Ww%3D%3D
74LS00	1	https://www.retroleum.co.uk/zx-spectrum-chips https://www.mouser.co.uk/c/?q=SN74LS00N
74LS32	1	https://www.retroleum.co.uk/zx-spectrum-chips
27C256 EEPROM	1	https://www.cricklewoodelectronics.com/27C256.html
Switchable ROM	1	https://www.retroleum.co.uk/zx-spectrum-chips

IC Socket 

Pins	Qty	Supplier
16	20	https://uk.farnell.com/multicomp-pro/2227mc-16-03-f1/socket-ic-dil-tube-30-16way-pk30/dp/1103833
18	1	https://uk.farnell.com/aries/18-3518-10/socket-dip-18way/dp/1674787 https://www.switchelectronics.co.uk/18-pin-dip-ic-socket-7-62mm
14	2	https://uk.farnell.com/aries/14-3518-10/socket-dip-14way/dp/1674785
40	2	https://uk.farnell.com/multicomp-pro/2227mc-40-06-f1/socket-ic-dil-tube-12-40way-pk12/dp/1103841
28	1	https://uk.farnell.com/aries/28-6518-10/socket-dip-28way/dp/1674794

Misc

Name	Qty	Supplier
Beeper	1	https://www.mutant-caterpillar.co.uk/shop/product_info.php?products_id=2725
Switching Regulator	1	http://retrorevivalshop.co.uk/index.php?main_page=product_info&cPath=6&products_id=58
Coil	1	https://www.ebay.co.uk/itm/124549383446
Case	1	https://zxrenew.co.uk/ZX-Spectrum-Replacement-Cases-only-c22752627
Faceplate	1	https://zxrenew.co.uk/ZX-Spectrum-Faceplates-c20672680
Keyboard Mat	1	https://zxrenew.co.uk/ZX-Spectrum-Keyboard-Mats-c20672679
Membrane	1	https://zxrenew.co.uk/ZX-Spectrum-16k-48k-keyboard-membrane-p69999647
Ear/Mic	2	http://retrorevivalshop.co.uk/index.php?main_page=product_info&cPath=8&products_id=51
DC Power Socket	1	http://retrorevivalshop.co.uk/index.php?main_page=product_info&cPath=7&products_id=50
Keyboard Connector 8 Contacts	1	http://retrorevivalshop.co.uk/index.php?main_page=product_info&cPath=8&products_id=736
Keyboard Connector 5 Contacts	1	http://retrorevivalshop.co.uk/index.php?main_page=product_info&cPath=8&products_id=737
Composite Video	1	https://www.youmakerobots.com/home/75-zx-spectrum-composite-mod-for-16k-and-48k.html
Power Supply	1	https://www.youmakerobots.com/sinclair/49-zx-spectrum-compatible-power-supply.html https://myvolts.co.uk/product/11021/UK_9V_Power_Adaptor_for_the_Sinclair_ZX-Spectrum-48K_Computer_by_myVolts
Mono Audio Lead	2	https://www.kenable.co.uk/en/audio-/audio-cables/jack-to-jack-35mm-cables/7415-mono-35mm-jack-plug-to-mono-35mm-jack-plug-cable-lead-05m-50cm-gold-007415-5055383474158.html
Composite Video Lead	1	https://www.kenable.co.uk/en/395-composite-cables

Useful Files

PCB Layout with components, values and pinouts (thanks to Dave Briggs for the original)