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HAKKO FG-101イメージ

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  • Japan
  • North America
  • EU
  • Oceania
  • Asia
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  • Soldering iron tester useful for daily maintenance of station type soldering irons
  • Tip temperature, leak voltage and tip-to-ground resistance can be easily measured with high accuracy
  • MAX HOLD Function
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One tester for all your soldering iron maintenance needs.
What should you check when doing a daily inspection of your soldering iron?
Grounded soldering irons are maintained by inspecting leak voltage, tip-to ground resistance, and tip temperature.
Grounded soldering irons cannot be maintained by checking insulation resistance. This method was used in the past in order to find out the level of leak current.

What is 'Leak voltage'?
Leak current is the current that leaks from the tip to a board or device. Leak voltage is a specific measurement of the level of this current. The leakage can adversely affect delicate devices, so it is necessary to check leak voltage on a daily basis.
Leak voltage is the current that leaks from the tip of a soldering iron to a board or device

What is 'Tip-to-ground resistance'?
Most leak current flows from the tip via the ground wire to the outlet ground terminal, and is prevented from affecting the device. Because of this, tip-to-ground resistance is another important issue that must be checked daily.
It is also important to check tip-to-ground resistance on a daily basis.

Why is tip temperature important?
As the tip, element cover and other parts oxidize, heat conduction deteriorates and the tip temperature becomes lower. This causes the difficulty of soldering. Therefore, tip temperature should be inspected daily to have better soldering.
Maximun current value mesured with HAKKO FG-101

100V-120V Spec 5A
220V-240V Spec 3A
Note: HAKKO FG-101 is broken when beyond maximum current value is measured.

In addition to traditional features, the FG-101 comes with two new functions: MAX HOLD and AUTO ZERO.

MAX HOLD Function Constantly displays the maximum temperature
AUTOZERO Function Automatically corrects zero point error of measuring instruments
Traditional Features Lead-free sensor
Measures leak voltage by True Root Mean Square (TRMS)
Highly reliable - Resistant to drift and changes in temperature
* The FG-101 does not come with the Monitor Output function that was included in past models.


MAX HOLD Function
Display Sample of MAX HOLD Function When the MAX HOLD function is on, the maximum temperature is constantly displayed on the LCD.
If the MAX HOLD button is pressed for a short time (less than 1 second) the maximum temperature is updated. If the button is pressed for a long time (1 second or longer) the MAX HOLD function turns off.
AUTO ZERO Function
The zero point error of measuring instruments can be corrected by simply pressing the AUTO ZERO button and waiting for the display to return to normal.

Display Sample of AUTO ZERO Function


How to measure the tip temperature, leak voltage and tip to ground resistance

Do not blow hot air (for example, with the HAKKO FR-802, etc.) directly onto the HAKKO FG-101 to measure the temperature.
If the hot air is blown directly onto the tester, the main unit of HAKKO FG-101 itself will be damaged.
Please use the temperature probe for Hot Air Rework System

When using the HAKKO FG-101, plug it into the outlet with a grounding terminal.

The HAKKO FG-101 cannot measure the leak voltage and tip to ground resistance of a soldering iron which has no grounding pin.
It can measure the leak voltage and tip to ground resistance of a soldering iron which has a plug with grounding pin.

Bipolar grounding plug (3-pin) |Flat plug (2-pin)

Differenced in the measurement methods according to tip shapes

For the precise temperature measurement, place the tip on the measuring point on sensor horizontally.

Guaranteed temperature range with the measurement tolerance of ±3°C

In general, the optimal temperature range for soldering is 300°C to 500°C, and that for SMD rework system is 300°C to 600°C. The tolerance of ±3°C within the optimal temperature range (300°C to 600°C) is assured. For the temperature range other than the above, the tolerance is not guaranteed but usually stays in the range of about ±5°C.