(slightly microphonic) 12BZ7 CBS NOS rebranded Westinghouse early 1950's large D getter (2.4/3.3ma)
By Tube World
1 slightly microphonic tube) 12BZ7 CBS NOS rebranded Westinghouse early 1950's large D getter
2.4ma Gm=3100
3.3ma Gm=3400
(Max ratings: 300Vplate, 1.5 watts)
(Vfil=12.6V @ 300ma)
(Typical Operation Class A amp: Vplate=250V, Vgrid=-2V, Ip=2.5ma, Rp=31.8Kohms, Gm=3200, Mu=100)
(The 12BZ7 has been subbed for a 12AX7 in some circuits)
(The 12BZ7 has 2 times the Gm (3200 versus 1600) and lower plate resistance (31K versus 62K) and higher filament current (300ma versus 150ma) than a 12AX7)
(The 12BZ7 was designed primarily for use as a sync separator and sync amplifier in television receivers. It is also useful in clipping circuits and as a general purpose audio amplifer)
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 12BZ7 CBS NOS rebranded Westinghouse early 1950's large D getter (2.4/3.3ma)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/products/12bz7west1.jpg?v=1571438864){kind=link}
 12BZ7 CBS NOS rebranded Westinghouse early 1950's large D getter (2.4/3.3ma) "Pin It")