Soldering 3 copper spacers to circuit board simultaneously

Objective

Soldering three copper spacers on a circuit board simultaneously

End Product

PCB spacers

Equipment

Ambrell 4.2 kW induction heating system, equipped with a remote workhead containing two 1.5μF capacitors for a total of 0.75μF

An induction heating coil designed and developed specifically for this application.

Materials

Circuit board with 3 copper spacers .5” (12.7mm) diameter and solder preforms

Temperature

464 ºF (240 ºC)

Frequency

323 kHz

Testing

A two-turn helical coil is used to heat 3 spacers at once. Power is supplied for 30 seconds to melt the solder preforms on the three spacers and create a solder joint without over-heating the board

Benefits

Induction heating provides:

• Precise and controlled application of heat

• Repeatable, non-contact, clean heating process

• Increased production capacity

• Energy efficient

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