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| UTC SFR1020 ULTRA-FAST RECOVERY RECTIFIER DIODES DESCRIPTION SFR1020 is dual center tap rectifier suited for high frequency Switching Mode Power Supplies applications. DIODE FEATURES * HIGH SURGE CURRENT CAPABILITY * SUITED FOR SMPS, DC ~ DC CONVERTERS * LOW FORWARD AND REVERSE RECOVERY TIME * LOW LOSSES CONNECTION DIAGRAM 1 TO-220 A1 K A2 1: A1 2: K 3: A2 *Pb-free plating product number: SFR1020L UTC UNISONIC TECHNOLOGIES CO., LTD. 1 QW-R601-004,A www.unisonic.com.tw UTC SFR1020 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) IF(AV) IFSM Tstg RATINGS 200 10 5 50 -60 ~ +150 DIODE UNIT V A A A ELECTRICAL CHARACTERISTICS (per diode) PARAMETER Reverse leakage current Forward voltage drop SYMBOL IR * 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 MAX 50 0.6 0.99 1.20 1.25 UNIT A mA V 0.8 0.95 * 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 Formard recovery time SYMBOL trr 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 3 MAX 30 UNIT ns ns V THERMAL RESISTANCES PARAMETER Junction to case Per diode Total SYMBOL Rth (j-c) RATINGS 4.0 2.4 0.7 UNIT /W 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 UNISONIC TECHNOLOGIES CO., LTD. 2 QW-R601-004,A www.unisonic.com.tw UTC SFR1020 Average forward power dissipation versus average forward current (per diode) 7 6 =0.05 =0.1 =0.2 =0.5 DIODE Peak current versus form factor (per diode) 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 tp PF (av) (w) 5 3 2 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 IF (av) (A) T IM (A) 4 =1 P=7.5W P=10W 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 Average forward current versus ambient temperature 6 5 IF (av) (A) Non repetitive surge peak forward current versus overload duration 70 60 50 IM (A) Rth(j-a)=Rth(j-c) 4 3 2 1 0 0 =tp/T 25 T tp 50 75 Ta () 100 125 150 Rth( j- a) =15/W 40 30 20 10 0 IE-3 IM t =0.5 Tc=25 Tc=125 IE-2 t (s) IE-1 IE+0 Forward voltage drop versus forward current (maximum values, per diode) 50.0 10.0 IFM (A) K=[Zth(j-c)/Rth(j-c)] Relative variation of thermal versus impedance junction to case versus pulse duration 1.0 =0.5 Tj=125 Tj=25 =0.2 1.0 =0.1 T Single pulse 0.1 =tp/T IE-3 IE-2 t (s) IE-1 tp IE+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 VFM (V) UTC UNISONIC TECHNOLOGIES CO., LTD. 3 QW-R601-004,A www.unisonic.com.tw UTC SFR1020 Junction capacitance versus reverse voltage applied (typical values, per diode). 50 40 C (pF) DIODE Reverse recovery charges versus dIF/dt (per diode). 200 100 Qrr (nC) F=1MHz Tj =25 30 20 IF = IF (av) 90% confidence Tj =125 50 20 10 10 1 10 VR (V) 100 200 10 20 50 100 200 500 dIF/dt (A/s) Peak reverse recovery current versus dIF/dt (per diode). IF=IF (av) 10.0 90% confidence Tj=125 Dynamic parameters versus junction temperature (per diode) Qrr; IRM [Tj ] / Qrr; IRM [Tj =125] 1.25 1.00 IRM 0.75 0.50 0.25 Qrr 20.0 IRM (A) 1.0 0.1 10 20 50 100 200 500 0 25 50 75 Tj () 100 125 150 dIF/dt (A/s) 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. 4 QW-R601-004,A www.unisonic.com.tw |
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