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Hakko Desoldering & Hot-Air Nozzles: High-Performance Series Guide

Achieving precise, non-destructive component removal during PCBA rework depends entirely on selecting the correct nozzle geometry. Hakko has a comprehensive range of high-precision desoldering and hot-air rework nozzles designed for rapid thermal transfer, tight vacuum seals, and uniform airflow distribution. Manufactured with robust alloys that resist heavy solder wear and high thermal oxidation, genuine Hakko nozzles ensure safe component extraction without lifting circuit pads or damaging adjacent surface-mount devices (SMDs).

Understanding Nozzle Profiles & Selection

To guarantee optimal performance and seamless fitment, choose the right inner diameter (I.D.) and outer diameter (O.D.) to ensure uniform suction and prevent thermal shock during component extraction.

Types of Nozzles

  • Desoldering Nozzles
  • Hot Air Rework Nozzles
  • Nitrogen Gas Nozzles

1. Desoldering Vacuum Nozzles (e.g., N61)

  • The Golden Rule: The Inner Diameter (I.D.) of the desoldering nozzle should always be slightly larger than the diameter of the component lead you are extracting.

  • If the nozzle tip is too small, it will block the solder from being completely vacuumed up into the filter, causing a clog. If it is too large, it may lose vacuum suction pressure against the PCB pad, leaving a partial solder connection behind.

2. Hot-Air Rework Nozzles (e.g., N51)

  • Single Jet Nozzles: Pinpoints concentrated hot air onto specific micro-leads, making them excellent for removing discrete SMDs like 0603 or 0402 chips.

  • Specialty Nozzles: Nozzles like BGA, SIP, SOJ, PLCC etc are engineered to wrap perfectly around the perimeter of multi-lead IC chips (like QFPs or SOPs). They channel uniform hot air across all leads simultaneously, melting the solder uniformly so the component can be cleanly lifted with a vacuum pickup tool.

3. Nitrogen (N2) Gas Nozzles

While not used for desoldering or rework, nitrogen soldering requires their own set of specialized nitrogen gas nozzles. This special nozzle directs nitrogen gas from the gas supply to the tip of the soldering iron.
Note: Different soldering tip shape and size has its corresponding N2 Nozzle. 

  • Oxidation Prevention & Enhanced Wetting:  They shroud the hot soldering tip in an inert atmosphere by constantly flooding the work area with nitrogen (N2) gas, purging oxygen away, reducing the rate of oxidation. 

  • Improved Heat Transfer: Pre-heated nitrogen gas acts as a highly efficient thermal conductor. This boosts the fluid capillary action (wetting) of lead-free solder alloys and lowers the required working temperature, protecting sensitive multi-layered boards from heat stress while drastically cutting down on tip oxidation.