Scorpion
Williams, 1980Need help identifying a diode from a drop target bank off of scorpion (williams system 6). The diode markings are listed as 008, 58S (or maybe 585) and -62. Anyone have any idea what diode this is? I don't have a schematic and couldn't find one online.
It's a 1N4004.
1980 WMS parts book shows it as part number 05-6258.
http://www.planetarypinball.com/mm5/merchant.mvc?Screen=BOOK
Which translates to a 1N4004.
Almost all diodes used on playfields in ALL pinball machines can be replaced with 1N4004>1N4007 regardless of their markings. There are a few exceptions but very few.
Even the small glass ones (1N914/1N4148) can almost always be replaced with the much hardier plastic cased diodes.
Exceptions would include zener diodes mainly but these are usually mounted on PCBs.
Quoted from phishrace:It's a 1N4004.
I don't have any extra 1N4004 but I have 1N4007, would that be an ok substitute?
Quoted from Foxxstone_80:I don't have any extra 1N4004 but I have 1N4007, would that be an ok substitute?
Don't bother with 1N4004 in future, when you run out of them only keep 1N4007 as they are superior (voltage rating) and will replace all the others at exactly the same price.
Actually I have no idea why they still bother to make them? There is just zero advantage, not even price - maybe at manufacturers levels of hundreds of thousands you might save a few pennies?
Quoted from pins4u:Actually I have no idea why they still bother to make them?
They're rated at 400 volts. I'm not an EE, but weren't they overkill to begin with? The drive transistor will fail long before the diode.
Quoted from phishrace:They're rated at 400 volts. I'm not an EE, but weren't they overkill to begin with? The drive transistor will fail long before the diode.
Sure, but when they are all the same price why bother with the 4004?
diodes (resized).pngQuoted from pins4u:Sure, but when they are all the same price why bother with the 4004?[quoted image]
I get mine by the handful out of bins at a local place (silicon valley). A nickel each. At that price with no shipping, it's a no brainer. Will have to look next time to see what they charge for higher rated 1N400X diodes. Place has lots of other pinball components too, so I never drive there just for diodes.
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Gaborone
Hopkins, MN