Patent ID: 7581668
Filing Date: 2009-09-01
Classification: B23K,H01L,H05K

Abstract:
1. A method of soldering an item to be soldered in a transit oven comprising: heating the item to be soldered in a preheating zone using a preheating device to a first temperature below the melting temperature of a solder in contact with the item to be soldered; subjecting the item to be soldered in a soldering zone with a first volume flow of a fluid with a second temperature higher than a melting temperature of the solder generated by a convection heater; after subjecting the item to be soldered with the first volume flow, subjecting the item to be soldered in the soldering zone with a second volume flow of a fluid with the second temperature, and cooling the item to be soldered below the melting temperature, wherein the first volume flow is larger than the second volume flow, and wherein the convection heater heats the item to be soldered from both sides with the first and second volume flows at the second temperature.