SN-390 Adjustable Soldering Clamp Holder FAQ and support
What is the SN-390, and what is it primarily used for?
It is a lightweight soldering fixture that adjusts to circuit-board size and rotates 360° for positioning, with a metal base and non-slip pads.
Which users or work situations is the SN-390 suitable for?
The SN-390 is suitable for PCB soldering, electronics practice, repair training, models, and users who need both hands free. Follow the product manual, site conditions, and operating procedures.
What are the features and benefits of the SN-390's adjustable clamping range up to approximately 200 × 140 mm?
The range holds various small and medium circuit boards so both hands can focus on soldering and testing. Use the fixture within its specified capacity.
What are the features and benefits of 360° rotation and four board-thickness settings on the SN-390?
The board can be rotated to a suitable working angle and placed in the most stable slot for its thickness. These functions improve efficiency and stability.
What is the correct basic operating method for the SN-390?
Adjust the side clamps to the PCB width, select the appropriate board-thickness slot, lock the board, rotate it to the required angle, and confirm that the base is stable.
What important specifications or compatibility limitations apply to the SN-390?
The maximum clamping size is approximately 20 × 14 cm. It supports 0.2/1.8/2.0/3.0 mm board thicknesses, measures approximately 30 × 16.5 × 12.5 cm, and weighs approximately 450 g.
What safety precautions apply when using the SN-390?
Disconnect power before clamping and do not overcompress fragile boards. Do not direct a hot-air tool or soldering iron at the plastic arms for an extended period.
How should the SN-390 be cleaned and maintained after use?
Remove flux, solder beads, and dust. Inspect the knobs, clamping slots, and rubber pads, and retighten any loose parts.
How should I choose between the SN-390 and similar tools?
This fixture is suitable for holding and freely turning a PCB. If wires, a magnifier, or multiple small parts must also be held, consider a multi-arm assistance fixture.
Which points should be confirmed before purchasing the SN-390?
Confirm the circuit-board length, width, thickness, required rotation clearance, and workbench size, and determine whether the SN-11 fixture is also needed.
What material is the black adjustment knob on the SN-390 made of?
The SN-390 adjustment knob is made of phenolic resin (Bakelite).