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understanding part numbers and packages

autodeskguest

I'm very new user of Eagle and I'm trying to understand how to use the

right parts. For example, I'm using a 10K carbon film resistor 1/4 watt

5% tolerance.  I see in resistor.lbr  under  R-US_ RESISTOR- American

symbol package 207/12   (type 207 grid 12mm).  Where exactly do I find

these package numbers?  How do I match my part to a part in the library?

 

Here's the data sheet the I'm using

http://www.mouser.com/catalog/specsheets/XC-600035.pdf

 

What part should I use?

 

 

 

Mark

 

Parents

  • SNIP

     

    And what does type 207 mean? I know it a package but I don't see 207 in

    the data sheet.  What does types 204, 207, 309, 411 mean?

     

    I noticed for  Power Metal Film Resistors in

    http://www.vishay.com/docs/28729/pr010203.pdf

     

    "High power in small packages (1 W/0207 size to

    3 W/0617 size)"

     

    So 207 is the diameter size?

     

     

    (I'm a EE but it's my first time making a schematic to PCB.)

     

    It is the diameter and size of the resistor body in centimeters.

    So the 1. value in your example means 1 Watt and body size 2x7

    Milimeters = 0,2x0,7 Centimeters. Forget the x and commas and you have 0207.

    (Like you write 2k7 for a resistor value of 2.7 kilo ohms).

    The 3 Watts resistor has a body of 6x17 milli- or 0,6x1,7 centimeters.

    Since it is not really healthy for a resistor to bend the wires sharp at

    the body you leave a milimeter or two before you bend them as seen at

    page 4 of your pdf-file. So this leads to the "/value".

    If you check the eagle rcl.lbr pick a resistor 0207/7 and a 207/15 and

    place them in the schematic. They look alike but if you switch to brd

    you will notice the differece. The bodies are equal but the wires have a

    different length. So the value behind the / is the grid size of the part.

     

     

    --

    Gruß

     

    Jörn

     

Reply

  • SNIP

     

    And what does type 207 mean? I know it a package but I don't see 207 in

    the data sheet.  What does types 204, 207, 309, 411 mean?

     

    I noticed for  Power Metal Film Resistors in

    http://www.vishay.com/docs/28729/pr010203.pdf

     

    "High power in small packages (1 W/0207 size to

    3 W/0617 size)"

     

    So 207 is the diameter size?

     

     

    (I'm a EE but it's my first time making a schematic to PCB.)

     

    It is the diameter and size of the resistor body in centimeters.

    So the 1. value in your example means 1 Watt and body size 2x7

    Milimeters = 0,2x0,7 Centimeters. Forget the x and commas and you have 0207.

    (Like you write 2k7 for a resistor value of 2.7 kilo ohms).

    The 3 Watts resistor has a body of 6x17 milli- or 0,6x1,7 centimeters.

    Since it is not really healthy for a resistor to bend the wires sharp at

    the body you leave a milimeter or two before you bend them as seen at

    page 4 of your pdf-file. So this leads to the "/value".

    If you check the eagle rcl.lbr pick a resistor 0207/7 and a 207/15 and

    place them in the schematic. They look alike but if you switch to brd

    you will notice the differece. The bodies are equal but the wires have a

    different length. So the value behind the / is the grid size of the part.

     

     

    --

    Gruß

     

    Jörn

     

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