SHINDENGEN General Purpose Rectifiers UL Bridges OUTLINE DIMENSIONS U4SB20 Case Case :: 3S 3S (Unit : mm) 200V 4A FEATURES ● Thin Single In-Line Package ● UL Recognized (UL File No.E142422) ● High IFSM ● Applicable to Automatic Insertion APPLICATION ● Switching power supply ● Home Appliances, Office Equipment ● Telecommunication, Factory Automation RATINGS ●Absolute Maximum Ratings (If not specified Tc=25℃) Item Symbol Tstg Storage Temperature Tj Operating Junction Temperature VRM Maximum Reverse Voltage IO Average Rectified Forward Current 50Hz sine wave, R-load Peak Surge Forward Current Current Squared Time Dielectric Strength Mounting Torque IFSM I 2t Vdis TOR Conditions With heatsink Tc=108℃ 50Hz sine wave, R-load Without heatsink Ta=25℃ 50Hz sine wave, Non-repetitive 1cycle peak value, Tj=25℃ 1ms≦t＜10ms Tj=25℃ Terminals to case, AC 1 minute （ Recommended torque : 0.5N･m） ●Electrical Characteristics (If not specified Tc=25℃) Item Symbol Conditions VF Forward Voltage IF=2A, Pulse measurement, Rating of per diode IR VR=VRM , Pulse measurement, Rating of per diode Reverse Current θjc junction to case With heatsink θjl junction to lead Without heatsink Thermal Resistance θja junction to ambient Without heatsink Copyright & Copy;2000 Shindengen Electric Mfg.Co.Ltd Ratings -40∼150 150 200 4 2.3 120 60 2 0.8 Unit ℃ ℃ V A Ratings Max.1.05 Max.10 Max.5.5 Max.6 Max.30 Unit V μA A A 2s kV N･ m ℃/W U4SBx Forward Voltage Forward Current IF [A] 10 Tc=150°C [TYP] Tc=25°C [TYP] 1 Pulse measurement per diode 0.1 0.4 0.5 0.6 0.7 0.8 0.9 Forward Voltage VF [V] 1 1.1 1.2 U4SBx Forward Power Dissipation Forward Power Dissipation PF [W] 10 8 SIN 6 4 2 0 0 1 2 3 4 Average Rectified Forward Current IO [A] Tj= 150°C Sine wave 5 U4SBx Derating Curve Average Rectified Forward Current IO [A] 7 Heatsink SIN Tc Tc 6 5 4 3 2 1 0 80 90 100 110 120 130 140 Case Temperature Tc [°C] Sine wave R-load with heatsink 150 160 U4SBx Derating Curve Average Rectified Forward Current IO [A] 3.2 2.8 PCB SIN 2.4 Glass-epoxy substrate Soldering land 5mmφ 2 1.6 1.2 0.8 0.4 0 0 20 40 60 80 100 120 Ambient Temperature Ta [°C] Sine wave R-load Free in air 140 160 U4SBx Peak Surge Forward Capability IFSM 200 10ms 10ms Peak Surge Forward Current IFSM [A] 1 cycle non-repetitive, sine wave, Tj=25°C before surge current is applied 150 100 50 0 1 2 5 10 20 Number of Cycles [cycles] 50 100