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Questions and Answers
What is the significance of a high contact angle in a solder joint?
What is the significance of a high contact angle in a solder joint?
- It is indicative of a solder defect (correct)
- It shows that the solder joint can overcome minor stress
- It suggests that the solder joint is properly wetted
- It indicates a strong and reliable solder joint
What is the expected contact angle for a good solder joint?
What is the expected contact angle for a good solder joint?
- Less than 45 degrees
- Around 90 degrees (correct)
- Greater than 135 degrees
- Exactly 180 degrees
What should the solder joints do over the surfaces to be soldered?
What should the solder joints do over the surfaces to be soldered?
- Run out thickly towards the edge of the joints
- Form balls showing a high contact angle
- Flow evenly and run out thinly towards the edge of the joints (correct)
- Pull back without wetting
What role does a solder joint play in the electronic field?
What role does a solder joint play in the electronic field?
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What is the purpose of ensuring that the solder joint is strong enough?
What is the purpose of ensuring that the solder joint is strong enough?
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