What does the minus sign mean in measurements in datasheet footprint drawings?Does this product page...
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What does the minus sign mean in measurements in datasheet footprint drawings?
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$begingroup$
I have seen this more than once where there is a measurement such as "4-0.7". In this context, it clearly does not mean 4 to 0.7 mm so what does it mean. See the attached picture:
Link to datasheet: https://www.ckswitches.com/media/2780/pts526.pdf
datasheet footprint drawing
asked 8 hours ago
Emil ErikssonEmil Eriksson
2032 silver badges8 bronze badges
$endgroup$
add a comment |
$begingroup$
I have seen this more than once where there is a measurement such as "4-0.7". In this context, it clearly does not mean 4 to 0.7 mm so what does it mean. See the attached picture:
Link to datasheet: https://www.ckswitches.com/media/2780/pts526.pdf
datasheet footprint drawing
asked 8 hours ago
Emil ErikssonEmil Eriksson
2032 silver badges8 bronze badges
$endgroup$
2
$begingroup$
Not confident enough to make this a proper answer but my guess would be that it's just like the ±, just without the +; it's specified to be no larger than 4 mm, and no smaller than 3.3 mm.
$endgroup$
– Hearth
8 hours ago
2
$begingroup$
@Hearth Nah, it just means 4 pads at 0.7 mm. The long dimension is 1 mm, so it cannot be anything else.
$endgroup$
– user110971
8 hours ago
$begingroup$
How do you know it's a minus sign and not a hyphen, em dash or en dash?
$endgroup$
– Spehro Pefhany
5 hours ago
$begingroup$
@user110971 Now I feel dumb! Yeah, that's pretty obvious in hindsight.
$endgroup$
– Hearth
4 hours ago
add a comment |
$begingroup$
I have seen this more than once where there is a measurement such as "4-0.7". In this context, it clearly does not mean 4 to 0.7 mm so what does it mean. See the attached picture:
Link to datasheet: https://www.ckswitches.com/media/2780/pts526.pdf
datasheet footprint drawing
asked 8 hours ago
Emil ErikssonEmil Eriksson
2032 silver badges8 bronze badges
$endgroup$
I have seen this more than once where there is a measurement such as "4-0.7". In this context, it clearly does not mean 4 to 0.7 mm so what does it mean. See the attached picture:
Link to datasheet: https://www.ckswitches.com/media/2780/pts526.pdf
datasheet footprint drawing
datasheet footprint drawing
asked 8 hours ago
Emil ErikssonEmil Eriksson
2032 silver badges8 bronze badges
asked 8 hours ago
Emil ErikssonEmil Eriksson
2032 silver badges8 bronze badges
asked 8 hours ago
Emil ErikssonEmil Eriksson
2032 silver badges8 bronze badges
asked 8 hours ago
Emil ErikssonEmil Eriksson
2032 silver badges8 bronze badges
asked 8 hours ago
Emil ErikssonEmil Eriksson
2032 silver badges8 bronze badges
2032 silver badges8 bronze badges
2
$begingroup$
Not confident enough to make this a proper answer but my guess would be that it's just like the ±, just without the +; it's specified to be no larger than 4 mm, and no smaller than 3.3 mm.
$endgroup$
– Hearth
8 hours ago
2
$begingroup$
@Hearth Nah, it just means 4 pads at 0.7 mm. The long dimension is 1 mm, so it cannot be anything else.
$endgroup$
– user110971
8 hours ago
$begingroup$
How do you know it's a minus sign and not a hyphen, em dash or en dash?
$endgroup$
– Spehro Pefhany
5 hours ago
$begingroup$
@user110971 Now I feel dumb! Yeah, that's pretty obvious in hindsight.
$endgroup$
– Hearth
4 hours ago
add a comment |
2
$begingroup$
Not confident enough to make this a proper answer but my guess would be that it's just like the ±, just without the +; it's specified to be no larger than 4 mm, and no smaller than 3.3 mm.
$endgroup$
– Hearth
8 hours ago
2
$begingroup$
@Hearth Nah, it just means 4 pads at 0.7 mm. The long dimension is 1 mm, so it cannot be anything else.
$endgroup$
– user110971
8 hours ago
$begingroup$
How do you know it's a minus sign and not a hyphen, em dash or en dash?
$endgroup$
– Spehro Pefhany
5 hours ago
$begingroup$
@user110971 Now I feel dumb! Yeah, that's pretty obvious in hindsight.
$endgroup$
– Hearth
4 hours ago
2
2
$begingroup$
Not confident enough to make this a proper answer but my guess would be that it's just like the ±, just without the +; it's specified to be no larger than 4 mm, and no smaller than 3.3 mm.
$endgroup$
– Hearth
8 hours ago
$begingroup$
Not confident enough to make this a proper answer but my guess would be that it's just like the ±, just without the +; it's specified to be no larger than 4 mm, and no smaller than 3.3 mm.
$endgroup$
– Hearth
8 hours ago
2
2
$begingroup$
@Hearth Nah, it just means 4 pads at 0.7 mm. The long dimension is 1 mm, so it cannot be anything else.
$endgroup$
– user110971
8 hours ago
$begingroup$
@Hearth Nah, it just means 4 pads at 0.7 mm. The long dimension is 1 mm, so it cannot be anything else.
$endgroup$
– user110971
8 hours ago
$begingroup$
How do you know it's a minus sign and not a hyphen, em dash or en dash?
$endgroup$
– Spehro Pefhany
5 hours ago
$begingroup$
How do you know it's a minus sign and not a hyphen, em dash or en dash?
$endgroup$
– Spehro Pefhany
5 hours ago
$begingroup$
@user110971 Now I feel dumb! Yeah, that's pretty obvious in hindsight.
$endgroup$
– Hearth
4 hours ago
$begingroup$
@user110971 Now I feel dumb! Yeah, that's pretty obvious in hindsight.
$endgroup$
– Hearth
4 hours ago
add a comment |
1 Answer
1
active
oldest
votes
$begingroup$
It looks to me that it means four 0.7 mm wide pads.
Another way of writing it would be 0.7 (4 places)
answered 8 hours ago
Peter BennettPeter Bennett
39k1 gold badge31 silver badges72 bronze badges
$endgroup$
$begingroup$
Yes. It has to be that, because the tolerances are given either by: $ 0,8 pm 0,1 $ or $ 0,05^{0}_{-0,05}$. Note the comma instead of the period :-)
$endgroup$
– Huisman
8 hours ago
$begingroup$
If you look at page 3, top-left, there's a measurement that reads "4-0,45±0,05". I just wanted to mention that as it furthers your statement.
$endgroup$
– C. Lange
8 hours ago
1
$begingroup$
It's too ambiguous to be a standard notation... isn't it?
$endgroup$
– Eugene Sh.
8 hours ago
1
$begingroup$
@EugeneSh.: The drawing shows the pads as 1 mm long and 3.7 mm apart vertically, so they can't be 4 mm wide, if the drawing is anywhere near drawn to scale.
$endgroup$
– Peter Bennett
8 hours ago
1
$begingroup$
@PeterBennett Engineering drawings should not rely on the reader's visual estimation skills.
$endgroup$
– Eugene Sh.
7 hours ago
|
show 1 more comment
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1 Answer
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1 Answer
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oldest
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$begingroup$
It looks to me that it means four 0.7 mm wide pads.
Another way of writing it would be 0.7 (4 places)
answered 8 hours ago
Peter BennettPeter Bennett
39k1 gold badge31 silver badges72 bronze badges
$endgroup$
$begingroup$
Yes. It has to be that, because the tolerances are given either by: $ 0,8 pm 0,1 $ or $ 0,05^{0}_{-0,05}$. Note the comma instead of the period :-)
$endgroup$
– Huisman
8 hours ago
$begingroup$
If you look at page 3, top-left, there's a measurement that reads "4-0,45±0,05". I just wanted to mention that as it furthers your statement.
$endgroup$
– C. Lange
8 hours ago
1
$begingroup$
It's too ambiguous to be a standard notation... isn't it?
$endgroup$
– Eugene Sh.
8 hours ago
1
$begingroup$
@EugeneSh.: The drawing shows the pads as 1 mm long and 3.7 mm apart vertically, so they can't be 4 mm wide, if the drawing is anywhere near drawn to scale.
$endgroup$
– Peter Bennett
8 hours ago
1
$begingroup$
@PeterBennett Engineering drawings should not rely on the reader's visual estimation skills.
$endgroup$
– Eugene Sh.
7 hours ago
|
show 1 more comment
$begingroup$
It looks to me that it means four 0.7 mm wide pads.
Another way of writing it would be 0.7 (4 places)
answered 8 hours ago
Peter BennettPeter Bennett
39k1 gold badge31 silver badges72 bronze badges
$endgroup$
$begingroup$
Yes. It has to be that, because the tolerances are given either by: $ 0,8 pm 0,1 $ or $ 0,05^{0}_{-0,05}$. Note the comma instead of the period :-)
$endgroup$
– Huisman
8 hours ago
$begingroup$
If you look at page 3, top-left, there's a measurement that reads "4-0,45±0,05". I just wanted to mention that as it furthers your statement.
$endgroup$
– C. Lange
8 hours ago
1
$begingroup$
It's too ambiguous to be a standard notation... isn't it?
$endgroup$
– Eugene Sh.
8 hours ago
1
$begingroup$
@EugeneSh.: The drawing shows the pads as 1 mm long and 3.7 mm apart vertically, so they can't be 4 mm wide, if the drawing is anywhere near drawn to scale.
$endgroup$
– Peter Bennett
8 hours ago
1
$begingroup$
@PeterBennett Engineering drawings should not rely on the reader's visual estimation skills.
$endgroup$
– Eugene Sh.
7 hours ago
|
show 1 more comment
$begingroup$
It looks to me that it means four 0.7 mm wide pads.
Another way of writing it would be 0.7 (4 places)
answered 8 hours ago
Peter BennettPeter Bennett
39k1 gold badge31 silver badges72 bronze badges
$endgroup$
It looks to me that it means four 0.7 mm wide pads.
Another way of writing it would be 0.7 (4 places)
answered 8 hours ago
Peter BennettPeter Bennett
39k1 gold badge31 silver badges72 bronze badges
answered 8 hours ago
Peter BennettPeter Bennett
39k1 gold badge31 silver badges72 bronze badges
answered 8 hours ago
Peter BennettPeter Bennett
39k1 gold badge31 silver badges72 bronze badges
answered 8 hours ago
Peter BennettPeter Bennett
39k1 gold badge31 silver badges72 bronze badges
39k1 gold badge31 silver badges72 bronze badges
$begingroup$
Yes. It has to be that, because the tolerances are given either by: $ 0,8 pm 0,1 $ or $ 0,05^{0}_{-0,05}$. Note the comma instead of the period :-)
$endgroup$
– Huisman
8 hours ago
$begingroup$
If you look at page 3, top-left, there's a measurement that reads "4-0,45±0,05". I just wanted to mention that as it furthers your statement.
$endgroup$
– C. Lange
8 hours ago
1
$begingroup$
It's too ambiguous to be a standard notation... isn't it?
$endgroup$
– Eugene Sh.
8 hours ago
1
$begingroup$
@EugeneSh.: The drawing shows the pads as 1 mm long and 3.7 mm apart vertically, so they can't be 4 mm wide, if the drawing is anywhere near drawn to scale.
$endgroup$
– Peter Bennett
8 hours ago
1
$begingroup$
@PeterBennett Engineering drawings should not rely on the reader's visual estimation skills.
$endgroup$
– Eugene Sh.
7 hours ago
|
show 1 more comment
$begingroup$
Yes. It has to be that, because the tolerances are given either by: $ 0,8 pm 0,1 $ or $ 0,05^{0}_{-0,05}$. Note the comma instead of the period :-)
$endgroup$
– Huisman
8 hours ago
$begingroup$
If you look at page 3, top-left, there's a measurement that reads "4-0,45±0,05". I just wanted to mention that as it furthers your statement.
$endgroup$
– C. Lange
8 hours ago
1
$begingroup$
It's too ambiguous to be a standard notation... isn't it?
$endgroup$
– Eugene Sh.
8 hours ago
1
$begingroup$
@EugeneSh.: The drawing shows the pads as 1 mm long and 3.7 mm apart vertically, so they can't be 4 mm wide, if the drawing is anywhere near drawn to scale.
$endgroup$
– Peter Bennett
8 hours ago
1
$begingroup$
@PeterBennett Engineering drawings should not rely on the reader's visual estimation skills.
$endgroup$
– Eugene Sh.
7 hours ago
$begingroup$
Yes. It has to be that, because the tolerances are given either by: $ 0,8 pm 0,1 $ or $ 0,05^{0}_{-0,05}$. Note the comma instead of the period :-)
$endgroup$
– Huisman
8 hours ago
$begingroup$
Yes. It has to be that, because the tolerances are given either by: $ 0,8 pm 0,1 $ or $ 0,05^{0}_{-0,05}$. Note the comma instead of the period :-)
$endgroup$
– Huisman
8 hours ago
$begingroup$
If you look at page 3, top-left, there's a measurement that reads "4-0,45±0,05". I just wanted to mention that as it furthers your statement.
$endgroup$
– C. Lange
8 hours ago
$begingroup$
If you look at page 3, top-left, there's a measurement that reads "4-0,45±0,05". I just wanted to mention that as it furthers your statement.
$endgroup$
– C. Lange
8 hours ago
1
1
$begingroup$
It's too ambiguous to be a standard notation... isn't it?
$endgroup$
– Eugene Sh.
8 hours ago
$begingroup$
It's too ambiguous to be a standard notation... isn't it?
$endgroup$
– Eugene Sh.
8 hours ago
1
1
$begingroup$
@EugeneSh.: The drawing shows the pads as 1 mm long and 3.7 mm apart vertically, so they can't be 4 mm wide, if the drawing is anywhere near drawn to scale.
$endgroup$
– Peter Bennett
8 hours ago
$begingroup$
@EugeneSh.: The drawing shows the pads as 1 mm long and 3.7 mm apart vertically, so they can't be 4 mm wide, if the drawing is anywhere near drawn to scale.
$endgroup$
– Peter Bennett
8 hours ago
1
1
$begingroup$
@PeterBennett Engineering drawings should not rely on the reader's visual estimation skills.
$endgroup$
– Eugene Sh.
7 hours ago
$begingroup$
@PeterBennett Engineering drawings should not rely on the reader's visual estimation skills.
$endgroup$
– Eugene Sh.
7 hours ago
|
show 1 more comment
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2
$begingroup$
Not confident enough to make this a proper answer but my guess would be that it's just like the ±, just without the +; it's specified to be no larger than 4 mm, and no smaller than 3.3 mm.
$endgroup$
– Hearth
8 hours ago
2
$begingroup$
@Hearth Nah, it just means 4 pads at 0.7 mm. The long dimension is 1 mm, so it cannot be anything else.
$endgroup$
– user110971
8 hours ago
$begingroup$
How do you know it's a minus sign and not a hyphen, em dash or en dash?
$endgroup$
– Spehro Pefhany
5 hours ago
$begingroup$
@user110971 Now I feel dumb! Yeah, that's pretty obvious in hindsight.
$endgroup$
– Hearth
4 hours ago