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AMPEREX TUBE TYPE 0A2

The OA2 is a two electrode, inert gas filled, cold cathode tube for use in voltage regulator applications.

ELECTRICAL DATA

Operating voltage (nominal)    150    volts

Anode breakdown voltage with illumination

of 50-500 ft. candles    180    volts    max.

Anode breakdown in complete darkness    225    volts    max.

Regulation (Pit. Current =    5-30 ma)    6    volts    max.

MECHANICAL DATA

Mounting position    any

Base (JETEC base designation)    5BO,    7    pin    miniature

Max. overall length    2    5/8    inches

Max. diameter    3/4    inch

MAXIMUM RATINGS (absolute values)

Minimum D.C. anode supply voltage ¹    185    volts

Maximum average starting current    75    ma

Maximum averaging time    10    seconds

Maximum D.C. Cathode current    30    ma

Minimum D.C. Cathode current    5    ma

Maximum frequency ²    0    cycles/sec.

Max. shunt capacitor ³    0.1    uf

Ambient temperature limits    -55° to + 90°С

¹ Supply voltage nacossary to Insure starting throughout tub* life with an Illumination of 50-500 foot candles.
² Tube used so that cathode cannot become positive and anode negative.
³ In order to prevent parasitic oscillation, the value of a capacitor in parallel with the tube should be limited to 0.1 uf.