K2/100 Final Berillium transistors

[Pierre]

Hi to all,

As mentionned in the KPA100 manual, Q1-Q2 2SC2879 contain Beryllia Ceramic.
Do not break, cut, or crush them, since the dust or vapor can be dangerous.

However, there is a new design, the 2SC2879A. The difference between the
2SC2879 and the 2SC2879A is that the "A" version is RoHS compliant, and uses
an Aluminum Oxide insulator (color gray) on the header vs. Berillium Oxide
(color white).

Hope for all that Elecraft will use the new ''A'' design in future
upgrades...

72/73 de Pierre VE2PID

K2/100 # 5170
KX1 # 442

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[Eric Swartz - WA6HHQ]

Hi Pierre,

We have been shipping KPA100's with the 2SC2879A transistors (with the
Al Oxide die insulator) for a while now. Looks like we need to update
that section of our manual! Thanks for the heads up.

73, Eric   WA6HHQ
Elecraft


Pierre Desjardins wrote:

> Hi to all,
>
> As mentionned in the KPA100 manual, Q1-Q2 2SC2879 contain Beryllia
> Ceramic. Do not break, cut, or crush them, since the dust or vapor can
> be dangerous.
>
> However, there is a new design, the 2SC2879A. The difference between
> the 2SC2879 and the 2SC2879A is that the "A" version is RoHS
> compliant, and uses an Aluminum Oxide insulator (color gray) on the
> header vs. Berillium Oxide (color white).
>
> Hope for all that Elecraft will use the new ''A'' design in future
> upgrades...
>
> 72/73 de Pierre VE2PID

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