5718 - TekWiki
The 5718 (European: EC71) (P/N 154-0053-00) is a subminiature high-frequency triode vacuum tube.
It is used in the front end of the 321 (early models) and in the P500CF and P170CF probes.
Some instruments using part 5718
Instrument
Manufacturer
Class
Model
Description
Introduced
321
Tektronix
Oscilloscope
321
Portable single channel scope
1960
P170CF
Tektronix
Probe
P170CF
Cathode-Follower Probe
(?)
P500CF
Tektronix
Probe
P500CF
Cathode-Follower Probe
(?)
| Aged/Checked/Matched Pair Details | ||
|---|---|---|
| Used in | Tek Part# | S/N Range |
| P170CF (V951) | 157-0019-00 | All, Note1 |
| P500CF | 157-0046-00 | All, Note2 |
| P500CF | 157-0070-00 | All, Note3 |
- Note1:Aged/checked tubes have a green dot painted on tip
- Note2:Aged/checked tubes have a yellow dot painted on tip
- Note3:Aged/checked tubes have a white dot painted on tip
- 157-0046-00 has been replaced by 157-0070-00
Reference:
