Shuguang 300B-98 Vacuum Tube Best Matched Pair NEW

All items guaranteed 100% BRAND NEW in the original edition Box.
ONE-YEAR WARRANTY !!!

Straight heating cathode middle power transistor used in the amplifing of A1. It is adapt to be used in audio frequency which needs the output power is 10W.
300B-C long-life design, use pure graphite anticathode and plate dissipation power can reach 60W. If you adjust the electrical route properly, single tube can amplify A1, and can get the higher output power than 20W.

limit rating
plate voltage………………480V
plate dissipation power…………40W
cathodecurrent
自partial voltage…………………100 mA
fixuppartial voltage………………70 mA

capacitance between poles
input capacitance……………………9PF
output capacitance……………………4.3PF
transroute capacitance……………………15PF

static state parameter
Ua…………………………300V
-Ug……………………… 60 V
Ia…………………………60mA
Gm…………………………5.5mA/V
Ri…………………………0.7 KΩ
μ…………………………3.85
Pout………………………6.6W