TDSL Tube data [VR502]

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VR502 Pinout

VR502 Substitutes

Close or identical	CV1287, CV1502, KT32
Different rating or performance	25L6, 25L6GT, CV552, CV553, VT201, VT201C

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.

VR502 Ratings

Vh V	Ih A	VaMax V	PaMax W
26	0.3	135	10.0

VR502 Application Data

Class	Va V	Vg2 V	Vg1 V	Ia mA	Ig2 mA	Rk Ω	Zout Ω	Pout W	THD %
A S/''E	135	135	-7.6	75.0	5.0	95	1,300	3.5	11
A S/E	110	110	-6.0	60.0	4.0	95	1,600	2.3	6.5
A S/E	80	80	-4.5	44.0	4.0	95	1,600	1.2	9.5
AB1 P/P	135	135	-10.0	50.0	4.0	200	2,500	7.5	5

VR502 Data sheet links

Duncan''s Amp Pages	KT32: Acrobat PDF
The Valve Museum	25L6GT: html
oldradio.qrz.ru	25L6: Brans Vademecum, MK buizen handboek
Frank Philipse (Wildcat mirror - Jörg Jan Münter)	KT32: KT32.pdf (63746 bytes) 25L6: 25L6.pdf (172763 bytes), 25L6.pdf (45146 bytes), 25L6.pdf (63037 bytes) (fr) 25L6GT: 25L6GT.pdf (171333 bytes), 25L6GT.pdf (341055 bytes), 25L6GT.pdf (69118 bytes), 50C5.pdf (246817 bytes), 6J7GT.pdf (111793 bytes) (fr)

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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