METASU FCB-55A / D

Lead-free tin-copper alloy plating brightener system

The METASU FCB-55A/D process is a tin-copper alloy plating bath developed for lead-free coatings.

<Characteristics>

  • Superior bath stability during operation.
  • Reliable properties with negligible discoloration after reflow.
  • Smooth appearance in the temperature range of 20 – 30°C.
  • Excellent for hoop materials and connectors in high-speed plating.
  • Consistent copper content in the range of 0.5 to 3.0%.
  • Consistent appearance with a wide permissible current density range of 5 to 30A/dm2.
  • Excellent solderability and thermal fatigue characteristics.

Product Specifications

Usage conditions (standard)

Item Bath makeup concentration Concentration for monitoring
Composition METASU AM 93 ml/L 90 – 150 ml/L
METASU SM-2 225 ml/L
(Sn : 45g/L)
Sn : 30 – 60 g/L
METASU CU 12 ml/L
(Cu : 1.2g/L)
Cu : 0.8 – 1.6 g/L
METASU FCB-55A 100 ml/L 80 – 120 ml/L
METASU FCB-55D1 20 ml/L 5 – 30 ml/L
Condition Bath temperature 25℃(20 – 30°C)
Electric current density 5 – 30 A/dm2
Anode Tin or tin-copper alloy electrode plate
Agitation Pump circulation, continuous process flow
Filtration Continuous filtration with 1-5um filter

Replenish conditions

Chemicals used Replenishment reference (standard)
METASU FCB-55A 0.3ml/AH
METASU FCB-55DR 0.8ml/AH

 

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