On one side there are transistors, capacitors, diodes, resistors, and two transformers. It has an 18 pin connector on the circuit side. "CARRY PULSE AMPLIFIER B620D" is printed in solder on the circuit side.
Date
1966 ca.
Manufacturer
Digital Equipment Corporation (DEC)
Place Manufactured
Maynard, Mass.
Identifying Numbers
Model number
B620
Printed in white on the handle
Other number
B620D
Printed in solder on the top left edge on the circuit side