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Solder Defect Identification

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Questions and Answers

What is the criteria for solder on the component mounting surface of a through-hole board?

Solder should not have insufficient flow-up on double-sided boards

Solder and component electrodes should have a contact angle θ≧ ９０ °NG

Solder shall be formed all the way around to the land shoulder (correct)

Solder should not be raised at the stress relief section

What is the main issue with the solder on the surface of a through hole-mounted device on a through hole board according to the text?

It is insufficient on double-sided boards

It has stress relief at the lead bending section

It does not flow up the shoulder of the land (correct)

It has a contact angle θ≧ ９０ °NG

What is the requirement for stress relief at the lead bending section?

Solder should be formed all the way around to the land shoulder

Solder and component electrodes should have a contact angle θ≧ ９０ °NG

Solder should not be raised (correct)

Solder should not have insufficient flow-up on double-sided boards

What is the criteria for solder and component electrodes, leads, and land according to the text?

<p>Solder and component electrodes, leads, and land should not have wetting failure</p> Signup and view all the answers

What is the angle of solder in contact with component electrode, lead, and land according to the text?

<p>Angle of solder in contact with component electrode, lead, and land should be θ< ９０ °NG</p> Signup and view all the answers

Solder Defect Identification

Choose a study mode

Podcast

Questions and Answers

What is the criteria for solder on the component mounting surface of a through-hole board?

What is the main issue with the solder on the surface of a through hole-mounted device on a through hole board according to the text?

What is the requirement for stress relief at the lead bending section?

What is the criteria for solder and component electrodes, leads, and land according to the text?

What is the angle of solder in contact with component electrode, lead, and land according to the text?

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