155-0064-00: Difference between revisions
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|Part_nos=155-0064-00 | |Part_nos=155-0064-00 | ||
|Description=vertical output amplifier | |Description=vertical output amplifier | ||
|Used_in=7834;7854;7904; | |Used_in=7834;7854;7904;R7903;7912AD;485;PG502 | ||
|Designers= | |Designers= | ||
}} in a 12-pin TO-8 stud mounted can, developed by Tektronix in the early 1970s. | }} in a 12-pin TO-8 stud mounted can, developed by Tektronix in the early 1970s. | ||
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==Used in== | ==Used in== | ||
* [[7834]], [[7854]] (A18U150) | * [[7834]], [[7854]] (A18U150) | ||
* [[7904]], [[ | * [[7904]], [[R7903]] (U745, vertical output in SN B260000 and up; B259999 and below use [[155-0065-00]]) | ||
* [[7912AD]] (A34U745) | * [[7912AD]] (A34U745) | ||
* [[485]] | * [[485]] | ||
Revision as of 02:06, 22 November 2021
The Tektronix H074A (P/N 155-0064-00) is a vertical output amplifier hybrid integrated circuit in a 12-pin TO-8 stud mounted can, developed by Tektronix in the early 1970s.
Maximum power dissipation is 4 watts. Rise time is specified as 470 ps (equiv. bandwidth 745 MHz).
The hybrid consists of three dice: the M080 differential amplifier ("ft doubler"), and two D078 NPN output transistors in common-base configuration.
It is the same as the 155-0065-00 (H074) except for the case and pin 3 to case breakdown.
According to Modification 050-1014-00, Vertical Output Microcircuit Replacement, the emitter resistors need to be selected according to a code printed on the device.
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Schematic and pinout
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Mechanical
