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| Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets. |
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29th Mar 2023, 11:27 pm
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#1 |
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Triode
Join Date: May 2018
Location: Tonbridge, Kent, UK.
Posts: 41
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Diode Identification RS 51A
I like to find out about components that are hard to identify.
Got an axial metal case rectifier diode marked RS 51A possibly an old generic diode by Radiospares used as a low power mains rectifier diode, case like a DO 1 style. Anyone got any specs?  Thanks from David 
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30th Mar 2023, 12:13 am
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#2 |
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Hexode
Join Date: Mar 2008
Location: Bristol, UK.
Posts: 388
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Re: Diode Identification RS 51A
250 volt r.m.s,500mA nr equivalent BY100. Les
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30th Mar 2023, 3:14 pm
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#3 |
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Hexode
Join Date: Jul 2008
Location: Gateshead, Tyne & Wear, UK.
Posts: 336
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Re: Diode Identification RS 51A
Hello David
The only information I can find is in the old RS component applications data from 1971, and it lists a REC51A in the table on Silicon Rectifiers. Please see attached PDF file. I hope this information is of some use. If I remember correctly these devices did look like a BY100, with the cathode connected to the end with the flange and the case. Regards Stan.
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Junk accumulates to fill the space available. 
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30th Mar 2023, 3:17 pm
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#4 |
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Dekatron
Join Date: Aug 2007
Location: W.Butterwick, near Doncaster UK.
Posts: 8,932
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Re: Diode Identification RS 51A
These came in plastic cases and I think I still have one or two from the 60,s.
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G8JET BVWS Archivist and Member V.M.A.R.S |
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30th Mar 2023, 9:49 pm
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#5 |
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Triode
Join Date: May 2018
Location: Tonbridge, Kent, UK.
Posts: 41
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Re: Diode Identification RS 51A
Thank you all that is very helpful, needed to check its specifications to know if it was suitable enough for what I am working on.
Thank you again from David |
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