Fullmusic 300B/SE Graphite Screen Tube Generation Shuguang/PSVANE 300B Electronic Tube Factory Matched Pair
Product Warranty
All items Guaranteed 100% Brand New In the original edition Box and Come from the original factory.
All items ONE-YEAR WARRANTY !!!
All items ONE-YEAR WARRANTY !!!
Shipping Time & Invoice Declare
All items ship with DHL/UPS/TNT/EMS, (DHL/UPS/TNT) About 3-7days delivery time, EMS About 7-15days delivery time.
We can Declare the Value of the Order as Customer's Remark!!!
We can Declare the Value of the Order as Customer's Remark!!!
Product Declaration
Features: It is a dome shaped or eggplant shaped glass shell, a white ceramic base with four gold-plated legs, a direct heating oxide cathode, a mesh plate electrode, and a graphite plate electrode transistor.
Purpose: For audio amplifiers, with an output power of 8.5W.
Standard working status and parameters:
Heating voltage *... 5V or 2.5V
Heating current: 1.2A or 2.4A
Plate voltage: 300V
Gate voltage * *... 58V
Plate resistance: 700ohms
Plate current: 60mA
Magnification factor: 3.85
Transconductance
Gate current μ A
Extreme working usage value:
Maximum plate voltage: 450V
Maximum board power consumption: 40W
Maximum plate current (when using fixed bias)
Maximum plate current (when using self-sufficient bias): 100mA