7308

The 7308  (European: E188CC) (P/N 154-0371-00) is a dual triode vacuum tube with a B9A (Noval) miniature 9-pin base, a premium drop-in replacement for the 6DJ8 (ECC88).

Aged/Checked/Matched Pair Details
Used in	Tek Part#	S/N Range
3S76, 4S1, 4S2, 4S3	157-00102-00	All

Reference:

Tube aging procedure / Selection and checking procedure

Used in

It is used in the front-end of the 3S3 and 4S3. It is also used in the 3S76 and the 4S1, but in the memory.

Some instruments using part 7308

Instrument	Manufacturer	Class	Model	Description	Introduced
3S3	Tektronix	Plug-in	3S3	Dual-trace sampling plug-in	1963
3S76	Tektronix	Plug-in	3S76	Dual Channel Sampling plug-in	1962
4S1	Tektronix	Plug-in	4S1	Dual channel sampling plugin	1962
4S2A	Tektronix	Plug-in	4S2A	Dual channel sampling plugin	1965
4S3	Tektronix	Plug-in	4S3	1 GHz dual-trace sampling plugin	1963
S-311	Tektronix	Plug-in	S-311	Programmable dual-trace sampling plug-in	1965

Data

• Sylvania 7308 data sheet
• 7308 @ radiomuseum.org