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Replacement Components

983 bytes added, 14:58, 5 November 2010
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===Spectrum +3===
The transistors in the +3 PSU are H1061s. Possible alternatives include the BD243C and TIP41C
 
 
==Integrated Circuits==
===RAM===
MM5920N (national Semiconductors) chips are equivalent to 4116 RAM chips
AM9016EDC (AMD) chips are the same as 4116 chips.
IMS2600P-12 (Inmos) chips work in any upper RAM position (IC15-22)
41256 chips work in place of 4164 upper RAM chips
V53C256P80L chips work in any upper RAM position (IC15-22)
MN41257-12 chips work in any upper RAM position (IC15-22)
 
===Logic===
74LSxx series chips can be replaced with 74HCTxx series chips
 
===CPU===
Various makes of Z80 processor are used on Spectrums.
Zilog Z80 CPU
NEC D780C
 
 
==Suppliers==
Companies who supply suitable components
[http://www.cricklewoodelectronics.com/Cricklewood/home.php Cricklewood Electronics] specialise in hard to find/obsolete components.
[http://www.rapidonline.com/ Rapid Electronics]
[http://uk.farnell.com/ Farnell] Large supplier with a huge product range.

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