Where to order such Resistor Network?

Discussion in 'The Projects Forum' started by sifangyou, Jul 18, 2012.

  1. sifangyou

    Thread Starter New Member

    Jul 18, 2012
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    Hi. Attached is a resistor network with two resistors (100ohm and 1000ohm) in series. Any one know where to order such resistor network? I google "resistor network" but could not find any one with 3 pins.

    Best,
    Sifang
     
  2. mcasale

    Member

    Jul 18, 2011
    210
    12
    Are there any markings that indicate who makes this?

    I'd suggest looking at the big distributors, like Mouser and DigiKey.
     
  3. MrChips

    Moderator

    Oct 2, 2009
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    Why bother? Just use two separate resistors.
     
  4. KJ6EAD

    Senior Member

    Apr 30, 2011
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    That looks like it's just two chip resistors soldered onto a broken-off piece of SIP header, not an actual product.
     
    Last edited: Jul 18, 2012
    #12 likes this.
  5. BMorse

    Senior Member

    Sep 26, 2009
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    I agree with KJ6EAD, looks like someone just soldered 1206 SMD resistors onto a 3 pin SIP header..... I have never heard of multiple value resistor networks before :).....
     
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  6. Papabravo

    Expert

    Feb 24, 2006
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    I know an under employed technician. For the right price he'll make you as many as you want. You interested?
     
  7. MrChips

    Moderator

    Oct 2, 2009
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    By golly, you are so right. Good eye!
     
  8. sifangyou

    Thread Starter New Member

    Jul 18, 2012
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    Thanks, guys. You are right. Rookie mistake. I am a rookie, btw.

     
  9. sifangyou

    Thread Starter New Member

    Jul 18, 2012
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    Rookie question:
    I know SMD=Surface Mount Device
    But what does "1206" mean? I googled but can't find the answer easily.
     
  10. MrChips

    Moderator

    Oct 2, 2009
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    1206 refers to the dimensions of the SMD chip, 0.120 x 0.063 inches.

    Those resistors look like 0805 to me, 0.080 x 0.050 inches.
     
  11. SgtWookie

    Expert

    Jul 17, 2007
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    They're size 1206. Compare the 0.100" spacing of the pins to the 0.120" length of the resistors.
     
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  12. MrChips

    Moderator

    Oct 2, 2009
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    Looks like you're right.
     
  13. KJ6EAD

    Senior Member

    Apr 30, 2011
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    You can get all kinds of resistor networks, single value, dual value, R/2R, decade dividers and more.
     
  14. BMorse

    Senior Member

    Sep 26, 2009
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    You learn something everyday ;)

    I have heard of R/2R's, decade dividers and such, but just not a sip resistor network with multiple values..... I have always used SIP resistor networks with different numbers of resistors, just not with mixed values.....
     
  15. sifangyou

    Thread Starter New Member

    Jul 18, 2012
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    The definition of spacing of the pins is not center to center, right? I.e., Center to center (~0.120") > spacing of the pins (inside-to-inside spacing 0.100")
     
  16. BMorse

    Senior Member

    Sep 26, 2009
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    those dimensions refer to center to center, so the pins are .100" center to center and those resistors are overlapping the pins by approximately .010 " which are .120" end to end, since those are measured by size (length and width).
     
  17. MrChips

    Moderator

    Oct 2, 2009
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    But notice that the two together are extending beyond .200"
     
  18. BMorse

    Senior Member

    Sep 26, 2009
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    ?? Well of course it would!:rolleyes:
     
  19. THE_RB

    AAC Fanatic!

    Feb 11, 2008
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    It's not the first of April is it? :eek:
     
  20. Papabravo

    Expert

    Feb 24, 2006
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    If you look at a typical datasheet you will find the dimensions given in millimeters. The 0805 is actually 2 mm x 1.25 mm. Divide each of those dimensions by 25.4 mm/in and you get approximately .08" x .05". It is not exact but close enough.
     
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