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ZX Spectrum Issue 3B Parts List

Bill Of Materials

Ceramic Capacitors

ValueQtySupplier
100nf9https://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
100pf2https://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
10nf2https://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
150pf2https://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
16pf2https://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.
33pf2https://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
47nf26https://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
560pf1https://www.switchelectronics.co.uk/560pf-2-5mm-ceramic-disc-10-y5p-50v-capacitor-ts15001h561ksbpa0r-suntan

Electrolytic Capacitors

ValueMin VoltageQtySupplier
100uf16v2https://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
1uf50v2https://www.rapidonline.com/jb-capacitors-jab1j010m00000630130000b1uf-63v-20-axial-alum-elec-capacitor-11-0776
https://uk.rs-online.com/web/p/aluminium-capacitors/7076269/
22uf10v6https://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
4.7uf5v1https://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

ValueQtySupplier
100k1https://uk.farnell.com/multicomp/mcf-0-25w-100k/res-100k-5-250mw-axial-carbon/dp/9339078
100R1https://uk.farnell.com/multicomp/mcf-0-25w-100r/res-100r-5-250mw-axial-carbon/dp/9339043
180R1
10k13https://uk.farnell.com/multicomp/mcf-0-25w-10k/res-10k-5-250mw-axial-carbon-film/dp/9339060
15R4https://uk.farnell.com/panasonic/erg12sj150/res-15r-5-500mw-axial-metal-oxide/dp/2324446
1k11https://uk.farnell.com/multicomp/mccfr0w4j0102a50/res-1k-5-250mw-axial-carbon-film/dp/1652634
1k81https://uk.farnell.com/yageo/mfr-25fte52-1k8/res-1k8-1-0-25w-axial-metal-film/dp/3496915
220k1https://uk.farnell.com/multicomp/mcf-0-25w-220k/res-220k-5-250mw-axial-carbon/dp/9339329
220R2https://uk.farnell.com/yageo/cfr-25jt-52-220r/res-220r-5-0-25w-axial-carbon/dp/3496810
3.3k1https://uk.farnell.com/multicomp/mcf-0-25w-3k3/res-3k3-5-250mw-axial-carbon-film/dp/9339426
2k23https://uk.farnell.com/multicomp/mcf-0-25w-2k2/res-2k2-5-250mw-axial-carbon-film/dp/9339302
330R7https://uk.farnell.com/multicomp/mcf-0-25w-330r/res-330r-5-250mw-axial-carbon/dp/9339418
390R1https://uk.farnell.com/te-connectivity/cfr25j390r/res-390r-5-330mw-axial-carbon/dp/2329671
39R1https://uk.farnell.com/multicomp/mcf-0-25w-39r/res-39r-5-250mw-axial-carbon-film/dp/9339469
3k1https://uk.farnell.com/multicomp/mf25-3k/res-3k-1-250mw-axial-metal-film/dp/9341692
470R11https://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
4k71https://uk.farnell.com/koa-speer-electronics/cfs1-4ct52r472j/res-4k7-0-25w-axial-carbon-film/dp/3540800
56R1https://uk.farnell.com/multicomp/mcf-0-25w-56r/res-56r-5-250mw-axial-carbon-film/dp/9339582
5k11https://uk.farnell.com/koa-speer-electronics/cfs1-4ct52r512g/res-5k1-0-25w-axial-carbon-film/dp/3540808
680R2https://uk.farnell.com/multicomp/mcf-0-25w-680r/res-680r-5-250mw-axial-carbon/dp/9339655
68R1https://uk.farnell.com/te-connectivity/cfr16j68r/res-68r-5-250mw-axial-carbon-film/dp/2329547
8K28https://uk.farnell.com/multicomp/mcf-0-25w-8k2/res-8k2-5-250mw-axial-carbon-film/dp/9339728

Transistors

ValueQtySupplier
2N44011https://www.switchelectronics.co.uk/2n4401-bipolar-npn-transistor-40v-600ma-to92
https://www.rapidonline.com/dc-components-2n4401-transistor-npn-to92-40v-81-0486
BC5495https://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
ZTX6511https://uk.rs-online.com/web/p/bipolar-transistors/0295501
https://www.rapidonline.com/diodes-inc-ztx651-transistor-npn-60v-2a-eline-81-0224
ZTX7531https://www.cricklewoodelectronics.com/ZTX753.html
https://www.rapidonline.com/zetex-ztx753-100v-pnp-highcurrent-transistor-81-0238
BC3371https://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

ValueQtySupplier
1N414812https://uk.farnell.com/multicomp/1n4148-do-35/diode-small-sig-100v-0-15a-do/dp/2675146
5V11https://uk.farnell.com/on-semiconductor/1n4733a/diode-zener-1w-5-1v-do41/dp/1700825
BA1571https://uk.farnell.com/multicomp-pro/ba157g/rectifier-single-1a-400v-do-41/dp/3226312

Crystals

ValueQtySupplier
14MHz1https://uk.farnell.com/ael-crystals/x14m000000l001/crystal-14mhz/dp/9509488
https://www.retroleum.co.uk/spectrum-misc
4.43MHz1https://www.mouser.co.uk/ProductDetail/Wurth-Elektronik/830003099B

Chips

NameQtySupplier
Z801http://retrorevivalshop.co.uk/index.php?main_page=product_info&cPath=5&products_id=16
https://www.retroleum.co.uk/zx-spectrum-chips
ULA1http://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 Board1https://www.retroleum.co.uk/zx-spectrum-chips
Upper Ram Replacement Board1https://www.retroleum.co.uk/zx-spectrum-chips
LM1889N
(The only chip we can’t find a modern replacement for)		1https://www.retroleum.co.uk/zx-spectrum-chips
74HCT1574https://www.retroleum.co.uk/zx-spectrum-chips
https://www.mouser.co.uk/ProductDetail/Texas-Instruments/SN74HCT157N?qs=spW5eSrOWB5Yf%2FSklqG3Ww%3D%3D
74LS001https://www.retroleum.co.uk/zx-spectrum-chips
https://www.mouser.co.uk/c/?q=SN74LS00N
74LS321https://www.retroleum.co.uk/zx-spectrum-chips
27C256 EEPROM1https://www.cricklewoodelectronics.com/27C256.html
Switchable ROM1https://www.retroleum.co.uk/zx-spectrum-chips

IC Socket 

PinsQtySupplier
1620https://uk.farnell.com/multicomp-pro/2227mc-16-03-f1/socket-ic-dil-tube-30-16way-pk30/dp/1103833
181https://uk.farnell.com/aries/18-3518-10/socket-dip-18way/dp/1674787
https://www.switchelectronics.co.uk/18-pin-dip-ic-socket-7-62mm
142https://uk.farnell.com/aries/14-3518-10/socket-dip-14way/dp/1674785
402https://uk.farnell.com/multicomp-pro/2227mc-40-06-f1/socket-ic-dil-tube-12-40way-pk12/dp/1103841
281https://uk.farnell.com/aries/28-6518-10/socket-dip-28way/dp/1674794

Misc

NameQtySupplier
Beeper1https://www.mutant-caterpillar.co.uk/shop/product_info.php?products_id=2725
Switching Regulator1http://retrorevivalshop.co.uk/index.php?main_page=product_info&cPath=6&products_id=58
Coil1https://www.ebay.co.uk/itm/124549383446
Case1https://zxrenew.co.uk/ZX-Spectrum-Replacement-Cases-only-c22752627
Faceplate1https://zxrenew.co.uk/ZX-Spectrum-Faceplates-c20672680
Keyboard Mat1https://zxrenew.co.uk/ZX-Spectrum-Keyboard-Mats-c20672679
Membrane1https://zxrenew.co.uk/ZX-Spectrum-16k-48k-keyboard-membrane-p69999647
Ear/Mic2http://retrorevivalshop.co.uk/index.php?main_page=product_info&cPath=8&products_id=51
DC Power Socket1http://retrorevivalshop.co.uk/index.php?main_page=product_info&cPath=7&products_id=50
Keyboard Connector 8 Contacts1http://retrorevivalshop.co.uk/index.php?main_page=product_info&cPath=8&products_id=736
Keyboard Connector 5 Contacts1http://retrorevivalshop.co.uk/index.php?main_page=product_info&cPath=8&products_id=737
Composite Video1https://www.youmakerobots.com/home/75-zx-spectrum-composite-mod-for-16k-and-48k.html
Power Supply1https://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 Lead2https://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 Lead1https://www.kenable.co.uk/en/395-composite-cables

Useful Files

Issue-3B-Layout_Replacement-Parts-3Download

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