Transistors. Color and code marking. Reference data

Encyclopedia of radio electronics and electrical engineering / Reference materials

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Color and code marking in the KT-26 case

A type	coded designation	color point on the side
KT203		dark red
KT208		-
KT209		Grey
KT313		Orange
KT326		Brown
KT339		Blue
KT342		Blue
KT502		Yellow
KT503		White
KT3102		dark green
KT3107		Blue
KT3117		-
KT3157		-
KT3166		-
KT6127		-
KT632	-	Silvery
KT638	-	Orange
KT680		-
KT681		-
KT698		-
KP103		-
KP364		tobacco

Group color coding

Code marking of radio elements in the KT-27 case

A type	coded designation
KT814(A-G)	4 (A-D)
KT815(A-G)	5 (A-D)
KT816(A-G)	6 (A-D)
KT817(A-G)	7 (A-D)
KT638(A,B)	8 (A, B)
KT9115(A,B)	9 (A, B)
KU112	12
KT940(A-B)	40 (A-B)
KT646A
KT646B
KT972A
KT972B
KT973A
KT973B

Example

Code marking of the date of manufacture of devices

Publication: cxem.net

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