Replacement Components: Difference between revisions
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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 15:02, 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
- Cricklewood Electronics specialise in hard to find/obsolete components.
- Rapid Electronics
- Farnell Large supplier with a huge product range.