STPS3045FP Power Schottky rectifier Features A K Very small conduction losses Negligible switching losses Extremely fast switching Low thermal resistance A Avalanche capability specified K Description TO-220FPAC STPS3045FP Schottky rectifier suited for switch mode power supply and high frequency DC to DC converters. Packaged in TO-220 full pack, this device is Table 1. Device summary intended for use in low voltage, high frequency Symbol Value inverters, free wheeling and polarity protection applications. I 30 A F(AV) V 45 V RRM T 175 C j (max) V 0.51 V F (max) March 2011 Doc ID 018668 Rev 1 1/7 www.st.com 7Characteristics STPS3045FP 1 Characteristics Table 2. Absolute ratings (limiting values) Symbol Parameter Value Unit V Repetitive peak reverse voltage 45 V RRM I Forward rms current 45 A F(RMS) I Average forward current = 0.5 T = 85 C 30 A F(AV) c t = 10 ms sinusoidal, p I Surge non repetitive forward current 300 A FSM T = 25 C c P Repetitive peak avalanche power t = 1 s, T = 25 C 12500 W ARM p j T Storage temperature range -65 to + 175 C stg (1) T Maximum operating junction temperature + 175 C j 1 dPtot < 1. condition to avoid thermal runaway for a diode on its own heatsink Rth(j-a) dTj Table 3. Thermal resistance parameters Symbol Parameter Value Unit R Junction to case 4.0 C/W th(j-c) Table 4. Static electrical characteristics Symbol Parameter Tests conditions Min. Typ. Max. Unit T = 25 C 300 A j (1) I Reverse leakage current V = V R R RRM T = 125 C 20 60 mA j T = 25 C 0.62 j I = 30 A F T = 125 C 0.51 0.57 j (1) V Forward voltage drop V F T = 25 C 0.79 j I = 60 A F T = 125 C 0.65 0.72 j 1. Pulse test: t = 380 s, < 2% p To evaluate the conduction losses use the following equation: 2 P = 0.42 x I + 0.0050 x I F(AV) F (RMS) 2/7 Doc ID 018668 Rev 1