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 Post subject: G.E KS15701 Germanium Rectifier Specs/datas ?
PostPosted: Jun Mon 03, 2019 9:55 pm 
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I'm looking for the electrical specs for the General Electric type KS15701 L3 diffused junction germanium rectifier. Went through all my old databooks without success. Anyone here could help ? Please note I'm not looking for a substitute but the original specs. (max. PIV, forward current,etc...)
Thanks to all for your help.


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 Post subject: Re: G.E KS15701 Germanium Rectifier Specs/datas ?
PostPosted: Jun Mon 03, 2019 10:28 pm 
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Location: Norfolk, VA
Tubologic wrote:
I'm looking for the electrical specs for the General Electric type KS15701 L3 diffused junction germanium rectifier. Went through all my old databooks without success. Anyone here could help ? Please note I'm not looking for a substitute but the original specs. (max. PIV, forward current,etc...)
Thanks to all for your help.


That KS-prefixed diode is a Western Electric part number. GE made it for WE,

Try some of the many WE semiconductor guides - one is at AmericanRadioHistory,com.

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Brian
"Capacitor Cosmetologist since 1979"
USN Retired 1984-2006 (Avionics/Cal)


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 Post subject: Re: G.E KS15701 Germanium Rectifier Specs/datas ?
PostPosted: Jun Mon 03, 2019 10:50 pm 
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Location: Norfolk, VA
BTW, the "L3" suffix is the list number (list 3.....).

Here's the KS15724 L1 - can't seem to locate yours. TelephoneCollectors.info has the BellSystemsPractices (BSP) data.

Attachment:
KS15724L1.gif
KS15724L1.gif [ 112.41 KiB | Viewed 211 times ]



Some later edition of C18.073 will probably have your data.

_________________
Brian
"Capacitor Cosmetologist since 1979"
USN Retired 1984-2006 (Avionics/Cal)


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 Post subject: Re: G.E KS15701 Germanium Rectifier Specs/datas ?
PostPosted: Jun Sun 09, 2019 3:12 am 
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Joined: Jul Mon 08, 2013 2:48 pm
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Thanks guys for the replies. I'm still searching for the datas...

A few more infos:

The diode is mounted on a small square heatsink plate with a (insulated) L-shaped mounting bracket.

Production code stamped on the plate is 1-55 which I guess is january 1955 ?

I checked it with my semiconductor analyzer and found a forward voltage drop of 0.18V (which is normal for a Ge element) and a P.I.V breakdown voltage of 450V. The remaining missing data is the max. forward current but considering the age and technology of this diode I would guess something in the 0.2 to 0.5A range ?

Any thoughts ?


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