A device for the separate application of solder material deposits, in particular solder balls, the device comprising a solder material reservoir, an application device, a laser device and a conveying device for separately conveying the solder material deposits from the solder material reservoir toward the application device, the conveying device which is formed as a circular conveying disk having transport holders that are formed as passage holes and that are each movable from a receiving position, in which a solder material deposit is received from the solder material reservoir, into a transfer position, in which the solder material deposit is exposed to a pressure gas and from which the solder material deposit is transferred to an application opening of an application nozzle of the application device into an application position, a first detector device for triggering a treatment of the solder material deposit arranged in the application position with laser radiation emitted by the laser device and a second detector device for locating the solder material deposit being provided, the second detector device comprising a pressure sensor the first detector device being realized as an optical sensor device comprising a reflection sensor by means of which the reflection radiation reflected by the solder material deposit is detected, and the gas pressure being measured by means of the pressure sensor in a pressure chamber that is formed in the application device between the transport holder arranged in the transfer position and the application opening of the application nozzle, characterized in that the first detector device is realized independently of the application device, and a coupling device is comprised which serves both to optically connect the application opening and the first detector device and to optically connect the application opening and the laser device, and the coupling device is arranged at the upper end of an application duct opposite of the application opening on a top side of an upper housing part of the device and has both a transparent coupling surface for forming an optical connection between the application opening and the laser device and a beam deflection device for deflecting the reflected reflection radiation toward the first detector device. the first detector device being realized as an optical sensor device comprising a reflection sensor by means of which the reflection radiation reflected by the solder material deposit is detected, and the gas pressure being measured by means of the pressure sensor in a pressure chamber that is formed in the application device between the transport holder arranged in the transfer position and the application opening of the application nozzle, characterized in that the first detector device is realized independently of the application device, and a coupling device is comprised which serves both to optically connect the application opening and the first detector device and to optically connect the application opening and the laser device, and the coupling device is arranged at the upper end of an application duct opposite of the application opening on a top side of an upper housing part of the device and has both a transparent coupling surface for forming an optical connection between the application opening and the laser device and a beam deflection device for deflecting the reflected reflection radiation toward the first detector device.