UTC SFR1020 DIODE ULTRA-FAST RECOVERY RECTIFIER DIODES DESCRIPTION SFR1020 is dual center tap rectifier suited for high frequency Switching Mode Power Supplies applications. FEATURES * HIGH SURGE CURRENT CAPABILITY * SUITED FOR SMPS, DC ~ DC CONVERTERS * LOW FORWARD AND REVERSE RECOVERY TIME * LOW LOSSES 1 TO-220 CONNECTION DIAGRAM A1 K 1: A1 2: K 3: A2 *Pb-free plating product number: SFR1020L A2 UTC UNISONIC TECHNOLOGIES CO., LTD. www.unisonic.com.tw 1 QW-R601-004,A UTC SFR1020 DIODE ABSOLUTE MAXIMUM RATINGS (limiting values, per diode) PARAMETER Repetitive peak reverse voltage RMS forward current Average forward current = 0.5 TC=125 (Per diode) Surge non repetitive forward current tp=10ms sinusoidal Storage temperature range SYMBOL VRRM IF(RMS) RATINGS 200 10 UNIT V A IF(AV) 5 A IFSM 50 A Tstg -60 ~ +150 ELECTRICAL CHARACTERISTICS (per diode) PARAMETER SYMBOL Reverse leakage current IR * Forward voltage drop VF ** TEST CONDITONS Tj = 25 VR = VRRM Tj = 100 Tj = 125 IF= 5 A Tj = 125 IF= 10 A Tj = 25 IF = 10 A MIN TYP 0.8 0.95 MAX 50 0.6 0.99 1.20 1.25 UNIT A mA MAX 30 UNIT ns V * tp = 5 ms, < 2 % ** tp = 380 s, < 2 % 2 To evaluate the conduction losses use the following equation: P = 0.78x IF(AV) + 0.042 x IF (RMS) RECOVERY CHARACTERISTICS PARAMETER Reverse recovery time SYMBOL trr Formard recovery time tfr VFP TEST CONDITIONS Tj = 25, IF = 0.5A , Irr = 0.25A , IR = 1A Tj = 25, IF= 1A, dIF/dt = 50 A/s VFR = 1.1xVF max Tj = 25, IF= 1A, dIF/dt = 50 A/s MIN TYP 20 ns 3 V THERMAL RESISTANCES PARAMETER SYMBOL Per diode Total Junction to case Rth (j-c) Coupling Rth (c) When diodes 1 and 2 are used simultaneously : Tj (diode 1) = P(diode 1)xRth(j-c)(Per diode) + P(diode 2) x Rth(c) UTC RATINGS 4.0 2.4 0.7 UNISONIC TECHNOLOGIES CO., LTD. www.unisonic.com.tw UNIT /W 2 QW-R601-004,A UTC SFR1020 DIODE Average forward power dissipation versus average forward current (per diode) 7 =0.5 5 =1 4 IM (A) PF (av) (w) =0.1 =0.2 =0.05 6 Peak current versus form factor (per diode) 3 2 T 1 =tp/T tp 0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 50 45 40 35 P=5W 30 25 20 15 10 P=2.5W 5 0 0.0 0.1 0.2 T = tp/T P=7.5W 0.3 0.4 IF (av) (A) 0.7 0.8 0.9 1.0 70 Rth(j-a)=Rth(j-c) 60 50 4 IM (A) IF (av) (A) 0.5 0.6 Non repetitive surge peak forward current versus overload duration 5 Rth( j- a) =15/W 3 2 T 1 0 P=10W Average forward current versus ambient temperature 6 tp =tp/T 0 40 20 50 75 100 125 0 150 Tc=125 IM 10 tp 25 Tc=25 30 t =0.5 IE-3 IE-2 IE+0 IE-1 t (s) Ta () Forward voltage drop versus forward current (maximum values, per diode) Relative variation of thermal versus impedance junction to case versus pulse duration 1.0 50.0 IFM (A) 10.0 K=[Zth(j-c)/Rth(j-c)] =0.5 Tj=125 Tj=25 1.0 0.1 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 =0.2 =0.1 T Single pulse 0.1 =tp/T IE-3 IE-2 VFM (V) UTC UNISONIC TECHNOLOGIES CO., LTD. www.unisonic.com.tw IE-1 tp IE+0 t (s) 3 QW-R601-004,A UTC SFR1020 DIODE Junction capacitance versus reverse voltage applied (typical values, per diode). 50 200 F=1MHz Tj =25 40 IF = IF (av) 90% confidence Tj =125 100 30 Qrr (nC) C (pF) Reverse recovery charges versus dIF/dt (per diode). 20 50 20 10 1 10 100 10 200 10 20 50 VR (V) IRM (A) IF=IF (av) 10.0 90% confidence Tj=125 1.0 50 20 100 200 500 Qrr; IRM [Tj ] / Qrr; IRM [Tj =125] Dynamic parameters versus junction temperature (per diode) 20.0 10 500 200 dIF/dt (A/s) Peak reverse recovery current versus dIF/dt (per diode). 0.1 100 1.25 1.00 IRM 0.75 Qrr 0.50 0.25 0 25 50 dIF/dt (A/s) 75 100 125 150 Tj () UTC assum es no responsibility for equipm ent failures that result from using products at v alues that exceed, ev en m om entarily, rated v alues (such as m axim um ratings, operating condition ranges, or other param eters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, dev ices or system s where m alfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The inform ation presented in this docum ent does not form part of any quotation or contract, is believ ed to be accurate and reliable and m ay be changed without notice. UTC UNISONIC TECHNOLOGIES CO., LTD. www.unisonic.com.tw 4 QW-R601-004,A