SMTD998
The Tektronix 152-0177-02 is a 10mA 2pF tunnel diode in a DO-17 "top hat" package. It is used in the 067-0681-01. The 152-0177-02 is very similar to the 152-0177-01, but the 52-0177-02 has a tighter tolerance on Ip, +/- 0.5mA for the 152-0177-02 compared to +/- 1mA for the 152-0177-01.
Is the 152-0177-02 simply a selected 152-0177-01? The 152-0177-02 is listed in the 067-0681-01 as being manufactured by Tektronix. Was it fabricated by Tektronix or just binned and/or selected by Tektronix?