Williams MPU/Driver Interconnect kit

68B21 PIA  

Used refurbished and tested pulls (misc mfg)
40 Pin Dip Package  

NOS HD6821P PIA

40 Pin DIP Package

MPSA14 Transistor

NPN Darlington
30 Volt, 500 mAmp
TO-92 Package

ON Semi PN MPSA14RLRA

27Ω 5 Watt Axial Resistor

Used on Williams pinball driver board.

3579.545 Crystal.

OEM part used on several Williams and Gottlieb pinball MPU boards.

Crystal, 10.738635 Mhz

Used on Baby Pac Vidiot pcb

HC-49 Package

2N5061

Silicon Controlled Rectifier

.8A, 60V

TO-92 Package

Sold in pack of 5 pcs.

74HCT9114

Nine wide Schmitt trigger buffer, open drain outputs, inverting

Common failure point on the Rottendog 326 MPU board. Be sure to buy a spare or two to have on hand. Very hard to find obsolete IC.