Soldering Tip: Shape J


How to use Shape J + Examples

Hakko Soldering Tip Shape J T30-J

Shape J differs from Shape B and I by bending the tip end and is capable of soldering by applying the tip in 2 ways: face and point. It still has a conical/rounded tip and is used for drag soldering and correction of bridging.

Soldering Tiny Chip Parts (0603)

Hakko Soldering Tip Shape J T30-J Lay down the long end of the tip to the board.
*Photo shows T30-J with an N2 system iron for pre-heating effect.

NOTE: Some IC are specified by the manufacturer not to be touched on the electrode by tip end.

Drag Soldering

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.

NOTE: Apply flux to the leads and land pads before soldering. It helps to prevent problems such as solder bridges. 

Correcting Bridging

Shape J Correcting Bridging (Small)

If the bridge amount is small

Stand the tip on the pointed end and drag the tip slowly through the solder bridge.

 NOTE: Operate with a clean tip

Shape J Correcting Bridging (Large)

If the bridge amount is large

Lay the long end of the tip (either parallel or perpendicular) on the bridge and drag the tip outwards slowly. 

NOTE: Operate with a clean tip

Soldering at Narrow Pitches

Shape J vs Shape I

The fine pointed end of shape J enables easier soldering on narrow workpieces.

In addition, the bent tip allows you to solder at the same angle as shape I (angle B) while maintaining a more natural grip angle (angle A), reducing hand fatigue.