2pc each lot
211-TA is direct-heated type thorium tungsten cathode triode, can be used as class A, B and C.
Heater
Uf--------------------------------------10 V
If---------------------------------------3.25 A
Direct Interelectrode Capacitances
input----------------------------------6 PF
output----------------------------------5.5 PF
grid to plate----------------------------------14.5 PF
Static parameter
Ua--------------------------------------1250 V
—Ug------------------------------------70 V
Ia--------------------------------------100 mA
Gm-------------------------------------3.8 mA/V
u(当Ia=75mA时)---------------------------12
RL--------------------------------------7 KΩ
Pout------------------------------------10 W
Recommended Operating Conditions ( reference value)
class A(A-F) for two tubes:
typical working condition limited parameter
Ua--------750 1000 1250 1250 V
Pa----------------------------75 W
—Ug-------46 61 80 V
Ug(pk)-----41 56 75 V
Ia(0)-------34 53 60 mA
ri---------4.4 3.8 3.6 KΩ
RL--------8.8 7.6 9.2 KΩ
Pout-------5.6 12 19.7 W
Push-pull. class B(A-F)
typical working condition limited parameter
Ua------------------ 1000 1250 1250 V
Ia (mAx.sig per tube)-------------------175 mA
Pa (in) (mAx.sig per tube)--------------- 220 W
Pa (per tube)------------------------- 100 W
—Ug------------------72 95 V
Ug(pk)-----------------380 410 V
Ia (0)------------------20 20 mA
Ia(mAx.sig)-----------320 320 mA
Pd(mAx.sig)------------7.5 8 W
RL(a—a)---------------6.9 9 KΩ
Pout------------------200 260 W
ROHS Compliant
Good quality tubes
Test and selected by factory.
3months replacement warranty from date of receipt.
If as some reasons your parcel gets lost or damaged in shipping, we will offer a refund or re-ship your order. However, delivery times vary so please allow adequate time for your parcel to arrive before requesting a refund or replacement. Postal service estimates for delivery are as follows: