TDSL Tube data [KT88SC]

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KT88SC Pinout

KT88SC Substitutes

Close or identical	CV5220, KT88, KT88S
Different rating or performance	6550, 6550A, 6550B, 6550C, CK6550, KT90, SV6550C

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.

KT88SC Ratings

Vh V	Ih A	VaMax V	VhkMax V	PaMax W	Pg2Max W	IkMax mA	Cgk pF	Cak pF	Cga pF
6.3	1.6	800	200	42	8	230	16.0	12.0	1.2

KT88SC Application Data

Class	Va V	Vg2 V	Vg1 V	Ia mA	Ig2 mA	Rk Ω	Zout Ω	Pout W	THD %	Notes
AB1	521	300		2x64	2x1.7	2x460	9000	50	3.0	B+ = 560V
AB1	552	300	-34.0	2x60	2x1.7		4500	100	2.5
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

KT88SC Data sheet links

Dave Cigna''s Pages (DuncanAmps mirror)	6550: html
Peter Millett	6550: Acrobat PDF 100K
The Valve Museum	KT88: html
Frank Philipse (Wildcat mirror - Jörg Jan Münter)	KT88: KT88.pdf (236209 bytes), KT88.pdf (434345 bytes), KT88.pdf (633155 bytes), KT88spec.pdf (70096 bytes), KT88_GEC.pdf (9774126 bytes) 6550: 6201.pdf (902849 bytes), 6550.pdf (135652 bytes), 6550.pdf (421187 bytes) 6550A: 6550A.pdf (606171 bytes) KT90: KT90.pdf (67175 bytes) SV6550C: 6550C.pdf (51387 bytes)
TubeZone	KT90: pdf
Wikipedia	6550: 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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