Soldering Tip: Heavy Duty Types


How to use Heavy Duty Types + Examples

Hakko Heavy Duty Soldering Tip

Heavy duty soldering tips are derived from the shapes B, D and I with a thicker radius along its body to increase heat storage. This makes it best suited for work requiring high heat capacity. 

Heavy duty tips are only available in the T12 Series Soldering Tips.

Save Soldering Time

The heavy duty tip helps to reduce the time taken to solder each point, overall causing a significant decrease which increases efficiency in the long run. The graph below shows a reduction of 24 seconds to solder 5 points using the heavy duty Hakko T12-WD12 Soldering Tip.

Heavy Duty Tip - Time Graph

Measurement method: Solder at 5 points and measure the time taken for the temperature of the workpiece to reach 250ºC.
Board: Paper phenol copper
Component: Terminal (External diameter Φ8.5 / Internal diameter Φ4)
Tip shape: T12-D12 (Standard) VS T12-WD12 (Heavy Duty Type)
Temperature setting: 360ºC
Solder: Lead-free solder (Sn-3Ag-0.5Cu) Φ0.5

Increase workpiece temperature

When dealing with multi-layered boards, there may be issues where the solder does not melt due to insufficient heat. With the heavy duty tip's increased heat capacity, the temperature of the workpiece is increased, allowing the solder to melt easily. The graph below shows an increase of 18ºC of the workpiece with the use of the heavy duty Hakko T12-WD12.

Heavy Duty - Heat Capacity Graph
Measurement method: Measure the temperature of the workpiece when 5-point soldering is performed once every 3 seconds.
Board: Glass epoxy board
Component: Connector
Tip shape: T12-D12 (Standard) VS T12-WD12 (Heavy Duty Type)
Temperature setting: 360ºC
Solder: Lead-free solder (Sn-3Ag-0.5Cu) Φ0.8