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E280F Pinout
basing pinout
Note: pin 6 is an internal connection

 
E280F Substitutes
Close or identical 7722, CV10775

Warning: Substitutes are given as a guide only - please refer to original manufacturers data sheets to ensure that a substitute is safe and appropriate for your application.

 
E280F Ratings
Vh
V		 Ih
A		 VaMax
V		 Vg2Max
V		 PaMax
W		 Pg2Max
W		 Cgk
pF		 Cak
pF		 Cga
pF
6.3 0.32 220 180 4.0 1.1 9.3 2.6 0.035

 
E280F Application Data
Class Va
V		 Vg2
V		 Vg1
V		 Ia
mA		 Ig2
mA		 Ra
Ω		 S
mA/V		 Rk
Ω		 Notes
A 190 160 +8.0 20.0 6.0 100,000 26.0 370 Note use of cathode resistor and pos grid voltage

 
E280F Data sheet links
The Valve Museum E280F: html
oldradio.qrz.ru E280F: MK buizen handboek
Frank Philipse (Wildcat mirror - Jörg Jan Münter) 7722: 7722.pdf (60549 bytes)  E280F: E280F.pdf (395531 bytes), E280F.pdf (411237 bytes) (de)

Bold designators are close or identical, Italic designators are different ratings, different pinouts or different filament voltages. Please see the substitutes at the top of the page for more details

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