▼ Menu

6688

Sensibly equivalent to:
5A/170K CV3998 E180F
See also:
Nuvistor Valves
    
Extras ▼

 

The 6688 is a special quality UHF high-slope RF pentode primarily intended for use in wideband amplifiers in telephone carrier systems, radar equipment and measuring equipment.
The Type is etched into the glass as well as being printed. The GE logo covers the end etched letter of USA.
The pentode is a small part of the miniature envelope.
The thin glass tube envelope is 21 mm in diameter and, excluding the B9A base pins, is 37 mm tall.
References: Datasheet & 1040.

 

Pin Connections
B9A
1
2
3
4
5
6
7
8
9
k
g1
k
h
h
k
a
g3,s
g2

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
6.3
0.3
190
160
-1
13
3.3
35K
16.5
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated January 01, 2016.
Return to Main Index