原创 DFT_nail _select_rule

2019-4-21 06:56 812 1 1 分类: 测试测量
Select nail rule
  Test probe's size Safe DistanceRemark
Nail to Nail
(Between test points center distance)
39mil to 39mil 38milsuch size of test probe will cause more NTF
39mil to 50mil 43milsuch size of test probe will cause more NTF
50mil to 50mil 50milsuch size of test probe will cause more NTF
50mil to 75mil 58milsuch size of test probe will cause more NTF
75mil to 75mil 68mil 
75mil to 100mil 77mil 
100mil to 100mil 86mil 
Nail to device body
(Test point center to device border distance)
39mil3mm below height device16milsuch size of test probe will cause more NTF
50mil20milsuch size of test probe will cause more NTF
75mil24.5mil 
100mil29.5mil 
39mil3mm-5mm height device36milsuch size of test probe will cause more NTF
50mil40milsuch size of test probe will cause more NTF
75mil47mil 
100mil54mil 
39mil5mm-8mm height device65.5milsuch size of test probe will cause more NTF
50mil70milsuch size of test probe will cause more NTF
75mil77mil 
100mil84mil 
39mil8mm-12mm height device98.5milsuch size of test probe will cause more NTF
50mil98.5milsuch size of test probe will cause more NTF
75mil108.5mil 
100mil118mil 
39mil12mm-16mm height device115milsuch size of test probe will cause more NTF
50mil118milsuch size of test probe will cause more NTF
75mil126mil 
100mil133mil 
39mil16mm-20mm height device134.5milsuch size of test probe will cause more NTF
50mil138milsuch size of test probe will cause more NTF
75mil146mil 
100mil153mil 
39mil20mm above height device144milsuch size of test probe will cause more NTF
50mil148milsuch size of test probe will cause more NTF
75mil155.5mil 
100mil163mil 
Nail to testjet
(Test point center to testjet border distance)
39mil 34milsuch size of test probe will cause more NTF
50mil 39milsuch size of test probe will cause more NTF
75mil 47mil 
100mil 54mil 
Nail to DIP pin
(Test point center to device pin distance)
39mil 53milsuch size of test probe will cause more NTF
50mil 58milsuch size of test probe will cause more NTF
75mil 68mil 
100mil 77mil 
Nail to tooling hole
(Test point center to tooling hole border distance)
39mil 135milsuch size of test probe will cause more NTF
50mil 140milsuch size of test probe will cause more NTF
75mil 145mil 
100mil 150mil 
Nail to board boby
(Test point center to board border distance)
39mil 36milsuch size of test probe will cause more NTF
50mil 40milsuch size of test probe will cause more NTF
75mil 47mil 
100mil 54mil 
Easy to pour parts,Within easy fall+safe distabce
(Test point center to within easy fall)
39mil 113milsuch size of test probe will cause more NTF
50mil 118milsuch size of test probe will cause more NTF
75mil 126mil 
100mil 133mil 

作者: Tony_Chen0720, 来源:面包板社区

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