Author Topic: HP 3478A service manual IC U102  (Read 2462 times)

0 Members and 1 Guest are viewing this topic.

Offline yogece

  • Contributor
  • Posts: 14
  • Country: in
    • my website
HP 3478A service manual IC U102
« on: November 04, 2013, 02:48:47 pm »
Hi ,
i have got the service manual of HP 3478A; on page number 149  schematic of current source(programmable current source) is given.It is used to select the value of particular resistor to change the current; for switching  P-MOSFET is used and it is designated as U102 but nowhere i could find the part number.can any one help me?
 

Online Vgkid

  • Super Contributor
  • ***
  • Posts: 2593
  • Country: us
Re: HP 3478A service manual IC U102
« Reply #1 on: November 04, 2013, 03:17:31 pm »
It looks like a custom componet if it is the fet array.
it is part number:   1qf7-0067
and it looks to be possible to still buy one from here:
http://4gte.com/hp-agilent-1qf7-0067-hybrid-input-board.html
« Last Edit: November 04, 2013, 04:59:02 pm by Vgkid »
If you own any North Hills Electronics gear, message me. L&N Fan
 
The following users thanked this post: yogece


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf