TDSL Tube data [CV321]

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CV321 Pinout

CV321 Substitutes

Close or identical

CV1075, KT66, VT75(RAF)

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.

CV321 Ratings

Vh V	Ih A	VaMax V	PaMax W	Pg2Max W	Cgk pF	Cak pF	Cga pF	Notes
6.3	1.27	500	25	3.5	16.0	11.5	1.1	Tetrode connected
6.3	1.27	400	25		8.7	15.8	7.2	Triode connected

CV321 Application Data

Class	Va V	Vg2 V	Vg1 V	Ia mA	Ig2 mA	Ra Ω	S mA/V	Rk Ω	Zout Ω	Pout W	THD %	Notes
Static	250	250	-15.0			22,500	6.3
A S/E	250	250		85	6.3			160	2,200	7.25	9.0
A P/P	390	275		104	5.0			500 each	8,000	30.0	6.0
A P/P	250	250		162	12.0			200 each	4,000	17.0	4.0
AB1 P/P	510	395	-40	80	3				5,000			At idle
AB1 P/P	475	360	-40	175	19				5,000	50.0	5.0	Full output
Static (triode)	400		-38.0			1,450	5.5
A S/E (triode)	400			63				600	4,500	5.8	7.0
A S/E (triode)	250			60				315	2,750	2.2	6.0
A P/P (triode)	400			125				600 each	4,000	14.5	3.5
A P/P (triode)	250			110				360 each	2,500	4.5	2.0

CV321 Data sheet links

Dave Cigna''s Pages (DuncanAmps mirror)	KT66: html
Duncan''s Amp Pages	KT66: Acrobat PDF (4 pages)
The Valve Museum	CV1075: html
oldradio.qrz.ru	KT66: MK buizen handboek
Frank Philipse (Wildcat mirror - Jörg Jan Münter)	KT66: KT66.pdf (145018 bytes), KT66.pdf (418930 bytes), KT66.pdf (582695 bytes), KT66_GEC.pdf (6406803 bytes)
TubeZone	KT66: pdf
Wikipedia	KT66: Wikipedia page

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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