0405SC-1500M rev b microsemi rfis sc. reserves the right to change, without no tice, the specifications and information contained herein. visit our web site at www.microsemi..com or contact our factory direct. preliminary specification general description the 0405SC-1500M is a common gate n-channel depletion mode class ab silicon carbide (sic) static induction transistor (sit) capable of providing 1500 watts of rf power from 406 to 450 mhz. the transistor is designed for use in high power amplifiers supporting applications such as uhf weather radar and long range tracking radar. the device is an addition to a series of high power silicon carbide transistors from microsemi ppg. case outline 55st fet (common gate) absolute maximum ratings voltage and current drain-source (v dss ) 250v gate-source (v gs ) -1v temperatures storage temperature -65 to +150 c operating junction temperature +250 c electrical characteristics @ 25 c symbol characteristics test conditions min typ max units i dss drain-source leakage current v gs = -20v, v dg = 125v 750 a i gss gate-source leakage current v gs = -20v, v ds = 0v 50 a jc 1 thermal resistance 0.15 oc/w functional characteristics @ 25 c, vdd = 125v, i dq(ave) = 125 ma, freq = 406, 425, 450 mhz, g pg common gate power gain p out = 1500 w, pulsed 7.5 8.0 db p in input power pulse width = 300us, df = 6% 250 270 w d drain efficiency f = 450 mhz, p out =1500w 50 55 % load mismatch f = 420 mhz, p out = 1500w 5:1 po +1db power output ? higher drive f = 450 mhz, pin = 255 w 1600 w vgs gate source voltage set for idq(ave) = 125ma 3.0 10.0 volts note 1: thermal resistance rating is with operating conditions as a pulsed rf transistor as listed under the functional charact eristics note 2: product available may 2010 rev b ? mar 2010 0405SC-1500M 1500watts, 125 volts, class ab 406 to 450 mhz silicon carbide sit
0405SC-1500M rev b microsemi rfis sc. reserves the right to change, without no tice, the specifications and information contained herein. visit our web site at www.microsemi..com or contact our factory direct. typical rf performance curve 0405SC-1500M: pin vs pout 450mhz, vdd=125v, 300us 6% 0 200 400 600 800 1000 1200 1400 1600 1800 0 50 100 150 200 250 300 pin (w) pout (w) 0 1 2 3 4 5 6 7 8 9 10 pout gain 0405SC-1500M: pin vs drain eff 450mhz, vdd=125v, 300us 6% 0% 10% 20% 30% 40% 50% 60% 35 40 45 50 55 pin (dbm ) drain eff (%) drain eff 0405SC-1500M
0405SC-1500M rev b microsemi rfis sc. reserves the right to change, without no tice, the specifications and information contained herein. visit our web site at www.microsemi..com or contact our factory direct. test circuit board 0405SC-1500M test circuit component designations and values part description part description c1, c7, c8, c17 330pf chip capacitor (atc 100b) z1 65 x 960 mils (w x l) c3, c4, c5, c6, c11, c13 20pf chip capacitor (atc 100b) z2 65 x 650 mils (w x l) c2 , c15 15pf chip capacitor (atc 100b) z3 865 x 450 mils (w x l) c12, c14 24pf chip capacitor (atc 100b) z4 1125 x 500 mils (w x l) c16 4.7pf chip capacitor (atc 100b) z5 1216 x 420 mils (w x l) c9 1000uf 160v electrolytic capacitor z6 936 x 750 mils (w x l) c10 1uf chip capacitor z7 65 x 732 mils (w x l) z8 65 x 406 mils (w x l) pcb rogers 4350, r =3.48, 30mils, 1oz z9 65 x 214 mils (w x l) z10 50 x 495 mils (w x l) l2, l3 7 turns, 18awg, idia 0.2? l1, l4 ferrite coil inductor note: all z length dimensions include bends 0405SC-1500M
0405SC-1500M rev b microsemi rfis sc. reserves the right to change, without no tice, the specifications and information contained herein. visit our web site at www.microsemi..com or contact our factory direct. impedance information ? update in process 0405SC-1500M z s z l typical impedance values frequency (mhz) z s ( ? ) z l ( ? ) 406 0.69 ? j1.75 1.11 ? j0.37 425 0.72 ? j1.52 1.27 ? j0.19 450 0.79 ? j1.24 1.52 ? j0.06 * v dd = 125v, i dq = 125ma avg, p out = 1500w * pulse format: 300s, 6% long term duty factor . input matching network output matching network
0405SC-1500M rev b microsemi rfis sc. reserves the right to change, without no tice, the specifications and information contained herein. visit our web site at www.microsemi..com or contact our factory direct. case outline 55 st fet 0405SC-1500M
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