The existing technologies of brazed plate heat exchanger (BPHE) must be improved in order to face the new challenges of the energy transition, whether in energy recovery of systems, or in the efficiency of thermodynamic machines. To establish predictive methods of BPHE performance, it is necessary to bring new information on the understanding of the BPHE thermo-hydraulic transfers. In this study, the intended application is related to heat pumps, whose performance is sensitive to the heat transfer in the condenser. At the condenser inlet, the vapor superheating can reach 30 K. In this work, we present an analysis of a superheated vapor effect on the mean heat transfer coefficient in the condenser. The tested BPHE prototype consists of 3 plates, thus 2 channels, and pentane is used as the working fluid. IR metrology is used to distinguish the different fluid state distributions which are representative of different heat transfers. The IR thermography shows a significant impact of the vapor superheat, depending on the mass flux, on the fluid distribution at the channel inlet. The condensation heat transfer coefficient has been measured at a mean constant saturation temperature of 36.5°C (1.029 bars), while varying the vapor superheat between 2 and 25 K and the pentane mass flux between 8 and 18 kg.m-2.s-1. The results show:1/ an increase in the heat transfer coefficient with the vapor superheat reaching 50% for the lowest mass flux, 2/ a decrease in the heat transfer coefficient with increasing the mass flux, highlighting the gravity mode condensation.