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Induction soldering of PCBs with soldering paste

Soldered jumpers
Soldered jumpers

The customer uses a manual solder process. The current time to join 7 PCB's is 1 minute 45 seconds. It does not include the time to apply the solder paste and place the jumper across the PCBs in the paste. Our goal is to reduce the time while producing a high quality solder joint.

Equipment
UltraHeat UPT-S5
5 kW, 50-200 kHz
HS-4 Heat Station
Two-turn custom designed coil

Materials

  • Soldering wire
  • Soldering paste

Application of the solder paste with a stencil is recommended. This will provide improved process control, better repeatability, and avoid any residues.

Key Parameters
Temperature: 300°C
Power: 3 kW
Time: 14 sec for joining 7 boards

Frequency
200 kHz

Process: 1. Apply the solder paste on the pads of the printed circuit boards.
2. Place the copper jumpers in the solder paste across the pads of the adjacent PCBs.
3. Position the induction coil over the copper jumpers and pads.
4. Apply power to the UPT-S5, and heat for 2 sec. That's the time to heat one joint, and join 2 boards.
5. Confirm electrical continuity of across the jumpers by testing LED's on the printed circuit boards.

Results/Benefits:

Induction heating provides:

  • Strong durable joints
  • Selective and precise heat zone, resulting in less part distortion and joint stress
  • Less oxidation
  • Faster heating cycles
  • More consistent results and suitability for large volume production, without the need for batch processing
  • Clean and safe heat application, without pollutants

Video:

PUBLISHED: 17 Jul 15 Bookmark and Share
Company:
Ultraflex Power Technologies
Country:
USA
Tel:
+1 631 467 6814
Fax:
+1 631 980 4065
Email:
sales@ultraflexpower.com
Website:
www.ultraflexpower.com
Other News from Ultraflex Power Technologies:

»
Brazing corrugated tubing to stainless steel pipe and cap using UltraFlex Induction Heating
»
Brazing of heat exchanger pipes
»
Induction braze copper and brass lap joint
»
Preheat magnetic steel strip with very even heating across the strip
»
Induction heating system delivered for automotive parts supplier
»
Soldering copper pins onto a PCB
»
Induction preheating of brass rods before hot forging
»
Induction soldering of PCBs with soldering paste
»
Ultraflexappoints Reynaldo Alves South American Sales Representative
»
Induction brazing steel to wolfram carbide
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Ultraflex provides new resource for learning about Induction Heating
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Induction pressure casting no crucible
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Scott Taddeo heads up Ultraflex Power's West Coast office
»
Induction brazing steel to copper
»
Induction brazing steel to steel
»
Tom Dickerson joins Ultraflex as Americas Sales Manager


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