Availability: In stock
Part Number

FX-781 High Capacity N2 Generator

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Compact and high capacity, the Hakko FX-781 Nitrogen Generator creates nitrogen gas from filtered, dry compressed air, making this the ideal companion for your Hakko N2 Soldering System. The Hakko FX-781 has double the output capacity of the Hakko FX-780, allowing one generator to be shared between two soldering stations.


The Hakko Nitrogen soldering system is the ideal solution for all your LEAD-FREE hand-soldering applications, especially for those wanting the benefits of soldering while using nitrogen, but do not want the expense of installing or expanding a nitrogen distribution system within their facility.

Much like the Hakko FX-780, this new nitrogen generator uses filtered, dry compressed air and a membrane filter to extract the nitrogen from the atmosphere; and it can achieve concentration levels as high as 99.9%. The Hakko FX-781 has approximately double the output capacity of the Hakko FX-780, allowing one generator to be shared between two soldering irons/stations.

The bench-top FX-781 Nitrogen Generator creates nitrogen gas and the FX-791 Nitrogen Controller and FM-2026 Soldering Iron (sold separately) deliver the N2 efficiently and uniformly to the soldering area.

NOTE: If you do NOT have nitrogen availability at your work station, the compact FX-781 Generator is the best bang for your buck.


Compact, high-performance FX-781 Nitrogen Generator
• concentration of generated air = 99.9%
• concentration of generated N
2 gas = 98%
• generator can be placed perpendicularly or horizontally
Part Number: FX781-81 (sold separately, NOT included with FM2026-KIT)

Nitrogen Generation
(l/min at 25°C/77°F)

Air Pressure
99.9 99.5 99.0 98.0 97.0 96.0 95.0 90.0
0.3 Amount of
Generated N2
0.28 0.55 0.84 1.1 1.4 1.7 2.1 4.8
0.4 Amount of
Generated N2
0.49 0.90 1.3 1.8 2.3 2.8 3.4 7.8
0.5 Amount of
Generated N2
0.70 1.2 1.8 2.4 3.2 4.0 4.8 10.9
0.6 Amount of
Generated N2
0.92 1.7 2.3 3.2 4.2 4.9 6.1 13.8
0.7 Amount of
Generated N2
1.1 2.1 2.8 4.0 5.1 6.3 7.6 17.1


Call your local Hakko sales professional for a no obligation demonstration today.

Note: The 6 mm hose (black tubing) from the nitrogen generator to the controller are not included because length requirements vary greatly from customer to customer. The 6 mm hose (black tubing) can be purchased at your local hardware store.

Part Number: FX781-81 Generator  (see Specifications for details)

Part Number: FX791-01 Controller
(see Specifications for details)

Part Number: FM2026-01 N
2 Soldering Iron (see Specs for details)

Part Number: FM2026-KIT
Note: FM-2026-KIT includes FM2026-01 (iron) and FX791-01 (Controller) ONLY



 Model Name  FX-781
 Part No.  FX781-81
 Air Supply Pressure  44 - 102 psi (0.3 - 0.7 MPa)
 Air Supply Volume  99.9 % (max)
 Generated N2 Gas Flow1  2.4 L/min
 Max Operating Temperature  140°F (60°C)
 Outer Dimensions2
(W x H x L)
 2.9 x 16 x 2.8 in.
(73 x 407 x 71 mm)
 Weight (w/o racks)  4.4 lb. (2 Kg)
 Shipping Dimensions
(W x H x L)
 5.8 x 20.6 x 4.8 in.
(147 x 523 x 122 mm)
 Shipping Weight  6.4 lb. (2.9 kg)

1Input air pressure of 73 PSI (0.5 MPa) at 77°F (25°C) with 98% N2 concentration level

2As measured without the socket and valve assembly


 What's in the box?

 Description  Part No.
 Nitrogen Generator  FX781-81
 Rack w/2 Screws (4 sets)  B3024
 Y-Fitting  --
 Instruction Manual  --
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