[Heathkit] SB-104, HP-1144A regulator chips available

[Doug Shields]

Hello everyone,

     I had an inquiry today so I went looking in my Heathkit parts box.  I
have some of the Heathkit part number 442-626 regulator chips available.
This is the Fairchild UA78MGT2C regulator chip which has been obsolete and
out of production for decades.  This part is the same as used in the
Heathkits, except it has a second heat sink "wing".  I either bend the
second wing up for added cooling or flex it a few times until it breaks off.
It does not harm the part.  These are New Old Stock, never used parts.  They
are used in the SB-104(A), HR-1680, HP-1144A, and probably other Heathkits.

     The parts are available for $8.00 each plus postage.  Postage will
probably be a small box sent by Priority Mail.  Paypal, money order, check,
and cash are all acceptable.  Limited quantities and heaven knows if there
are any others out there anywhere.  Please let me know if I can help get
your Heathkit working again.

 

Doug  W4DAS