Seeking Syntron S4005 Diode Data 2

[dArsonval]

Can anyone here point me toward a Data Sheet, or info related to the operating characteristics
of an old Syntron S4005 Diode? It's in a DO-8 Package with a date code that appears to be from the 29th week of 1964.
Any help... will be a big help.

Photo attached for reference:

Thanks in advance.

John

 

[SteveWag]

Try this:

http://americanmicrosemi.com/information/spec/?ss_pn=S4005

Steve

 

[Skogsgurra]

Unless this is a very special application, I would use a 1N4007 if "powerlike" and a 1N4148 if "signallike".

Gunnar Englund

http://www.gke.org

--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.

 

[VEBill]

Discrepancy: OP mentioned DO-8 package - Stud mounted, heavy duty, often implies high current. Link provided by Steve leads to D0-41 package and mentions 1A current. Beware of this discrepancy. The 4000-series of rectifiers are as common as dirt. I'm not sure why a 4005 would be mounted in a DO-8 stud mounted package. Unnecessary for a 1A class diode. Makes me suspicious that this diode isn't a normal 4005 type.

Also, OP mentioned attached photo. None attached nor linked. It would be useful to confirm the package type.

 

[dArsonval]

Trying the Attachment again.
The diode is one of 4 making up a bridge rectifier.

 

[SteveWag]

Well, I guess a picture is worth a thousand words! What service is this thing used in? Maybe one of these:

http://www.nteinc.com/specs/6100to6199/pdf/nte6154_65.pdf

If the piece of equipment is from 1964 to say 1970, I would guess that the diode is nothing special. In the worst case you could replace all four.
Looking at Syntron’s S-series numbering, SXXX5 might be a 50 Volt diode, this coming from a S5105 data sheet. An RSXXX indicates a reverse polarity.

Steve

 

[dArsonval]

Thanks for your replies.

It appears the S4005 is/was a Syntron catalog number with the "S" denoting standard polarity direction, the "40" indicating the manufacturer's product Series Number,
and the "05" meaning the Peak Reverse Voltage as 50.
(Still don't know what the current capacity of the device is though.)
In searching out the Syntron Company; I found it interesting that the Coors name, (as many of us may know as a beer beverage company) and their identical "Coors" font...
was at one time associated with ceramics used to package electronic components.

Found via this URL:

http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=05531650

John

 

[btrueblood]

"was at one time associated with ceramics"

Coors ceramics are still a big deal. They have a lot of experience with alumina.

 

[IRstuff]

Coors and Kyocera were the two big names that I recall from my IC days.

The bottom line has to be, "What does the diode in question actually do? " If it's really nothing more than a bridge rectifier, then some sleuthing into the circuit performance will dictate the amount of current the device is required to handle. Is this bridge after a step-down transformer? Otherwise, the 50V rating seems a trifle low.

TTFN
faq731-376

 

[VEBill]

I'd simply find the 'biggest and baddest' (highest PIV and highest If) rectifier in the same D0-8 package, buy four, install them and then go for lunch (after triple checking a few obvious things first, e.g. polarity). It's extremely unlikely that 1960s rectifier tech can have higher parameters than the current state of the art. It should be an easy substitution - even if you never do find the data sheet for the original S4005.