Difference between revisions of "Replacement Components"

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Many components used in the Sinclair hardware, peripherals, etc. are no longer manufactured. However for most of these components there are modern alternatives. Much research was conducted by DEATH and others on the [http://www.worldofspectrum.org/forums/showthread.php?t=14018 World of Spectrum forums]
 
Many components used in the Sinclair hardware, peripherals, etc. are no longer manufactured. However for most of these components there are modern alternatives. Much research was conducted by DEATH and others on the [http://www.worldofspectrum.org/forums/showthread.php?t=14018 World of Spectrum forums]
  

Revision as of 15:04, 5 November 2010

Many components used in the Sinclair hardware, peripherals, etc. are no longer manufactured. However for most of these components there are modern alternatives. Much research was conducted by DEATH and others on the World of Spectrum forums

Transistors

ZX Spectrum 48k

Component Replacement Issue
1 2 3 3B 4 5 6A
TR1 & TR2

ZTX313

BC172 ? ? ? ? ? ? ?
BC183 ? ? ? ? ? ? ?
BC238 ? ? ? ? ? ? ?
BC383 ? ? ? ? ? ? ?
BC547 Y Y Y Y Y Y
BC548 Y Y Y Y Y Y
BC549 Y Y Y Y Y Y
MPS 2369 Y
ZTX312 Y
TR3 & TR6

ZTX313

BC172 ? ? ? ? ? ? ?
BC183 ? ? ? ? ? ? ?
BC238 ? ? ? ? ? ? ?
BC383 ? ? ? ? ? ? ?
MPS 2369 Y
ZTX312 Y
TR4

ZTX650

BC487 ? ? ? ? ? ? ?
BC489 ? ? ? ? ? ? ?
BC537 ? ? ? ? ? ? ?
BC538 ? ? ? ? ? ? ?
BC737 ? ? ? ? ? ? ?
ZTX651 Y Y Y Y Y Y
TIPP31 Y Y ? ?
TR5

ZTX213

BC251 ? ? ? ? ? ? ?
BC307 ? ? ? ? ? ? ?
BC512 ? ? ? ? ? ? ?
BC557 ? ? ? ? ? ? ?
ZTX750 Y Y Y Y Y Y
TR7

ZTX450

ZTX650 Y Y Y Y Y
ZTX651 Y Y Y Y Y
TR8 & TR9

BC184

BC384 ? ? ? ? ?
BC413 ? ? ? ? ?
BC550 ? ? ? ? ?
BC549 Y

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