PV-Module Table of Contents Concentrators, Bypass Diode.......................................................................................................................................... 3 Crystalline, Junction Box................................................................................................................................................. 4 Crystalline, Module Integration........................................................................................................................................ 5 Thin Film, Junction Box.................................................................................................................................................... 6 Thin Film, Module Integration.......................................................................................................................................... 7 page 1 PV-Module Application Overview Photovoltaic (PV) modules are composed of many individual solar cells that are arranged in such a way as to achieve desired voltage and current output. The system needs to be protected against reverse current flow in order to avoid dissipating the harvested energy as heat. To simplify the wiring of the cells, bypass diodes must be placed in proximity to the panel in the “junction box” that is typically made of plastic and mounted on the rear side of the panel, and thus exposed to rather high temperatures with limited heat dissipation capabilities. Schottky diodes are well suited and widely adopted for this application because of low conduction losses. The preferred package is axial, but new designs are going to SMD parts. Crystalline PV Modules use the junction box to connect the PV solar cells as strings to the inverter system. The bypass diodes are integrated into the junction box parallel to the strings in order to optimize the generated power of the PV module, even when part of the module is not working due to shadow effects, and to protect the non-working cells against overheating and hot spots. Newer trends involve separating the junction box and the bypass diodes and integrating the diodes into the PV module. Thin Film PV Modules require so-called ""blocking diodes"" between the PV module connectors that should withstand the maximum ""system voltage"" of the PV equipment, which can reach 1000 V. For improved efficiency, some designs use Schottky bypass diodes not only for the strings as in the crystalline concept, but also use several bypass diodes integrated into the module for a group of PV solar cells. Concentrator PV Modules are built with high concentrating lenses that project solar light onto a small solar cell that is mounted on a ceramic substrate. The application requires high-current Schottky bypass diodes and sometimes require ""bare dies"" for direct mounting on the ceramic substrate. page 2 PV-Module : Concentrators, Bypass Diode Bypass Diode Product Name Status Description Features Package MURS360 NEW SMD Ultrafast Rectifier Glass pass chip juntcion DO-214AB SMC SS15P3S NEW Photovoltaic Solar Cell Protection low profile = 1.1mm TO-277A SMPC SSA33L NEW SMD-Schottky Rectifier Low profile DO-214AC SMA VBT6045CBP NEW Solar Cell Protection - TMBS Ultra Low VF = 0.33 V at IF = 10 A Tj = 150 C; VR = 45 V; Tj=200 C; IF = 2*30 A; SMD TO-263AB D2PAK Q-Level page 3 PV-Module : Crystalline, Junction Box Bypass Diode Product Name Status Description Features Package MBRB15H45CT NEW Cell Protection - Schottky High Barrier Technology for Improved High Temperature Performance Tj = 175 C; VR = 45 V; Tj=175 CIF = 2 * 7.5 A; SMD TO-263AB D2Pack MBRB30H45CT NEW Cell Protection - Schottky High Barrier Technology for Improved High Temperature Performance Tj = 175 C; VR = 45 V; Tj=175 CIF = 2 * 15 A; VF = 0.56 V; SMD TO-263AB D2Pack SS10PH45 NEW Cell Protection - Schottky Low VF = 0.45 V at IF = 5.0 A Vf at If=10A --> 0.56V Tj = 175 C; VR = 45 V; Tj=175 C; IF = 10 A; VF = 0.56 V; SMD TO-277A SMPC SS15P3S NEW Cell Protection - Schottky Low VF = 0.32 V at IF = 7.5 A Vf at If=15A --> 0.42V Tj = 150 C; VR = 45 V; Tj=200 C; IF = 15 A; VF = 0.42 V; SMD TO-277A SMPC V10P45S NEW Cell Protection - Trench-Schottky Ultra Low VF = 0.34 V at IF = 5.0 A Vf at If=10A --> 0.41V Tj = 150 C; VR = 45 V; Tj=200 C; IF = 10 A; VF = 0.41 V; SMD TO-277A SMPC V15P45S NEW Cell Protection - Trench-Schottky Ultra Low VF = 0.31 V at IF = 5.0 A Vf at If=15A --> 0.42V Tj = 150 C; VR = 45 V; Tj=200 C; IF = 15 A; VF = 0.42 V; SMD TO-277A SMPC VBT2045BP NEW Cell Protection - Trench-Schottky Ultra Low VF = 0.33 V at IF = 5.0 A Vf at If=20A --> 0.51V Tj = 150 C; VR = 45 V; Tj=200 C; IF = 20 A; VF = 0.51 V; SMD TO-263AB D2Pack VBT2045CBP NEW Cell Protection - Trench-Schottky Ultra Low VF = 0.33 V at IF = 5.0 A Vf at If=10A --> 0.41V Tj = 150 C; VR = 45 V; Tj=200 C; IF = 2*10 A; VF = 0.41 V; SMD TO-263AB D2Pack VBT3045CBP NEW Cell Protection - Trench-Schottky Tj = 150 C; VR = 45 V; Tj=200 C; IF = 2*15 A; VF = 0.39 V; SMD TO-263AB D2Pack VBT4045BP NEW Cell Protection - Trench-Schottky Ultra Low VF = 0.28 V at IF = 5.0 A Vf at If=40A --> 0.51V Tj = 150 C; VR = 45 V; Tj=200 C; IF = 40 A; VF = 0.51 V; SMD TO-263AB D2Pack VBT6045CBP NEW Cell Protection - Trench-Schottky Ultra Low VF = 0.33 V at IF = 10 A Tj = 150 C; VR = 45 V; Tj=200 C; IF = 2*30 A; SMD TO-263AB D2Pack VSB1545 NEW Cell Protection - Trench-Schottky Ultra Low VF = 0.33 V at IF = 5.0 A Vf at If=15A --> 0.44V Tj = 150 C; VR = 45 V; Tj=200 C; IF = 15 A; VF = 0.33 V; TH / Axial P600 leaded VSB2045 NEW Cell Protection - Trench-Schottky Ultra Low VF = 0.30 V at IF = 5.0 A Vf at If=20A --> 0.42V Tj = 150 C; VR = 45 V; Tj=200 C; IF = 20 A; VF = 0.30 V; Leaded Axial P600 VT2045BP NEW Cell Protection - Trench-Schottky Ultra Low VF = 0.33 V at IF = 5.0 A Vf at If=20A --> 0.51V Tj = 150 C; VR = 45 V; Tj=200 C; IF = 20 A; VF = 0.51 V; Through Hole TO-220AB PowerPack VT2045CBP NEW Cell Protection - Trench-Schottky Ultra Low VF = 0.33 V at IF = 5.0 A Vf at If=10A --> 0.41V Tj = 150 C; VR = 45 V; Tj=200 C; IF = 2*10 A; VF = 0.41 V; Through Hole TO-220AC PowerPack VT3045BP NEW Cell Protection - Trench-Schottky Ultra Low VF = 0.30 V at IF = 5.0 A Vf at If=30A --> 0.45V Tj = 150 C; VR = 45 V; Tj=200 C; IF = 30 A; VF = 0.51 V; Through Hole TO-220AC PowerPack VT3045CBP NEW Cell Protection - Trench-Schottky Ultra Low VF = 0.30 V at IF = 5.0 A Vf at If=15A --> 0.39V Tj = 150 C; VR = 45 V; Tj=200 C; IF = 2*15 A; VF = 0.30 V; Through Hole TO-220AB PowerPack VT4045BP NEW Cell Protection - Trench-Schottky Ultra Low VF = 0.28 V at IF = 5.0 A Vf at If=40A --> 0.51V Tj = 150 C; VR = 45 V; Tj=200 C; IF = 40 A; VF = 0.51 V; Through Hole TO-220AC PowerPack VT6045CBP NEW Cell Protection - Trench-Schottky Ultra Low VF = 0.33 V at IF = 10 A Tj = 150 C; VR = 45 V; Tj=200 C; IF = 2*30 A; Through Hole TO-220AB PowerPack Q-Level page 4 PV-Module : Crystalline, Module Integration Bypass Diode Product Name Status SS15P3S Description Features Package Cell Protection - Schottky Low VF = 0.32 V at IF = 7.5 Vf at If=15A --> 0.42V Tj = 150 C; VR = 45 V; Tj=200 C; IF = 15 A; VF = 0.42 V; SMD TO-277A SMPC SS15P3S NEW Cell Protection - Schottky Low VF = 0.32 V at IF = 7.5 A Vf at If=15A --> 0.42V Tj = 150 C; VR = 45 V; Tj=200 C; IF = 15 A; VF = 0.42 V; SMD TO-277A SMPC V15P45S NEW Cell Protection - Trench-Schottky Ultra Low VF = 0.31 V at IF = 5.0 A Vf at If=15A --> 0.42V Tj = 150 C; VR = 45 V; Tj=200 C; IF = 15 A; VF = 0.42 V; SMD TO-277A SMPC Q-Level page 5 PV-Module : Thin Film, Junction Box Blocking Diode Product Name Status Description Features Package 1N5408 Plastic Rectifier Low laekage current Tj=150 C; IF = 3.0 A; DO-201AD GP30M Glass Passivated Junction Plastic Rectifier Cavity-free glass passivated junctio DO-201AD P600M General Purpose Plastic Rectifier Low leakage current High forward current capability Tjmax=150°C Vrrm=1000V TH / Axial P600 Q-Level page 6 PV-Module : Thin Film, Module Integration Bypass Diode Product Name Status SS5P3 SS8P3L NEW Description Features Package Cell Protection - Schottky Rectifier Low forward voltage drop Vf@5A=0.403V SMD eSMP TO-277A SMD-Schottky Rectifier Low profile =1.1mm SMD TO-277A SMPC Q-Level AEC-Q page 7 page 8