7.5.1 Soldering Surface Mount Gull Wing Components, Point To Point Method
Printed Board Type: R/F/C
Skill Level: Intermediate
Conformance Level: High
Revision: D
Revision Date: Jul 7, 2000
Outline
This procedure covers the general guidelines for soldering
surface mount gull wing components. There is basically
only one type of gull wing component. Whether leads
are on two sides or four sides, or whether the component
is large or small, the soldering principles are the
same.
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Acceptability
References |
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IPC-A-610 |
12.0 |
Surface Mount Assemblies |
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Surface Mount Gull Wing Component |
Tools and Materials
Cleaner
Flux
Microscope
Solder
Soldering Iron with Tips
Wipes
Procedure
Figure 1: Place component and
check alignment.
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| 1.
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Add liquid flux to the corner pads. |
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| 2. |
Place the component in position and hold it
steady. The leads must be aligned with the pads.
On large components this is best done by aligning
the leads on opposite corners. (See Figure 1).
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Figure 2: Place the soldering iron tip
at the junction between the pad and component lead.
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| 3.
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Place the soldering iron tip at the junction
between the pad and component lead at one of
the corners. The soldering iron tip may rest
at the junction of the component lead and pad
or on top of the lead. Apply additional wire
solder as needed. (See Figure 2).
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| |
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| 4. |
Remove the tip. Wait a moment for the solder
to solidify before soldering the opposite corner.
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| 5. |
After the opposite corner is soldered,
solder the remaining leads. |
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| 6. |
Clean, if required and inspect. | | |
