TDSL Tube data [6550]

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6550 Pinout

6550 Substitutes

Close or identical	CK6550
Different rating or performance	CV5220, KT88, KT88S, KT88SC, KT90

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.

6550 Ratings

No information available

6550 Application Data

Class	Va	Vg2	Vg1	Ia	Ig2	Ra	S	Rk	Zout	Pout	THD	Notes
A	400	225	-16.5	87.0	4.0				3,000	20.0
A	250	250	-14.0	140	12.0	15,000	11.0		1,500	12.5
AB1 U/L 40%	553		-75.0	2x50					4500	100	2.0
AB1 U/L 40%	453		-59.0	2x50					4000	70	2.0
AB1 U/L 40%	436			2x87				2x600	6000	50	1.5	B+ = 500V
AB1 U/L 40%	328			2x87				2x400	5000	30	1.0	B+ = 375V
AB1 triode	349			2x79				2x525	4000	17	1.5	B+ = 400V
AB1 triode	422			2x94				2x525	4000	31	1.5	B+ = 485V

6550 Data sheet links

Automatica	6550: html
Dave Cigna''s Pages (DuncanAmps mirror)	6550: html
Peter Millett	6550: Acrobat PDF 100K
N7JP Tube Database	6550: HTML page
Frank Philipse	6550A: 135/6/6550A.pdf
Triode Electronics	6550A: gif1, gif2, gif3, gif4, gif5, gif6, gif7
Virtual Valve Museum	6550: HTML page
WPS	6550: html page

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