Drag Soldering


Recommended Tips for Drag Soldering

Multiple tip shapes are capable of performing drag soldering.
NOTE:
 Applying flux to the leads and land pads before soldering helps to prevent problems such as solder bridges.

In addition, the shape BCM/CM which has a hollow in its surface helps prevent bridging. The increased surface tension from the hollow of Shape BCM/CM means that solder is not left in unnecessary areas, reducing solder bridges.

Shape BCM/CM (more info)

BCM CM Drag Soldering

Feed solder on a hollow section and drag the tip along slowly.

Shape BC/C (more info)

BC Drag Soldering

Put the cut surface to the leads and drag the tip slowly while feeding solder.

Shape B (more info)

B Drag Soldering

Put the tip end to the leads and drag the tip slowly while feeding solder.

Shape D (more info)

Shape D Drag Soldering

Put the tip end to the leads and drag the tip slowly downwards while feeding solder. Take note of when to feed solder to prevent excess solder. 

Shape H (more info)

Shape H Drag Soldering Put the pad section to the leads and drag the tip along slowly.

Shape J (more info)

Shape J Drag Soldering

Lay down the long end of the tip and drag the tip slowly. Note the timing to feed solder to prevent excess solder.

Shape K (more info)

Place the point of the soldering tip to the leads while laying down the entire blade. Feed the solder and drag the tip downwards slowly. 

Shape K Drag Soldering (PTH)

Pin Though Hole (PTH)
Lay the blade down with the face flush against the board to transfer sufficient heat. 

Shape K Drag Soldering (PTH)

Shape K Drag Soldering (QFP)

Quad Flat Pack (QFP)
Lay the blade down with the line portion flush against the leads. Ensure that the tip does not come in contact with the IC

Shape K Drag Soldering (QFP)