3A-172B STC logo
STC logo Vintage UK, NOS.
3A/172B is a HIGH gain (mu=30), AUDIO triode signal tube with a B7 British base. Sockets to fit from stock refer 7PT4 or 7pt4c.
Data at http://tubedata.tubes.se/index.html
Photo and data at www.tubecollector.org/cv1670.htm
Heater 12.6v @ 0.2a, anode 250v, mutual conductance 3, amplification factor 30.
This AUDIO triode is equivalent to HL1320 CV1679. Tested. Guaranteed.
Available boxes: tick the boxes to select your
Normal price: £22.50 each. Quantity
Wholesale offer: 50 @ £18.00 each