1/5 february, 11 2002 SD1541-01 rf & microwave transistors avionics applications ? designed for high power pulsed iff and dme applications ? 400 w (min.) dme 1025 - 1150 mhz ? 6.5 db min. gain ? refractory gold metallization ? emitter ballasting and low thermal resistance for reliability and ruggedness ? 30:1 load vswr capability at specificied operating conditions ? input/output matched, common base configuration description the SD1541-01 is a hermetically sealed, gold metallized, silicon npn power transistor. the SD1541-01 is designed for applications requiring high peak power and low duty cycles such as dme. the SD1541-01 is packaged in a hermetic metal/ceramic package with internal input/output matching, resulting in improved broadband performance and a low thermal resistance. pin connection 1. collector 2. base 3. emitter 4. base 1 2 3 4 .400 x .500 2lfl (m112) hermetically sealed order code SD1541-01 branding sd1541-1 thermal data r th(j-c) junction -case thermal resistance 0.12 c/w absolute maximum ratings (t case = 25 c) symbol parameter value unit v cbo collector-base voltage 65 v v ces collector-emitter voltage 65 v v ebo emitter-base voltage 3.5 v i c device current 22 a p diss power dissipation 1458 w t j junction temperature +200 c t stg storage temperature -65 to +150 c
SD1541-01 2/5 electrical specification (t case = 25 c) static dynamic note: pulse width = 10 m s, duty cycle = 1% this device is suitable for use under pulse width/duty cycle conditions. please contact the factory for specific applications assistance. symbol test conditions min. typ. max. unit bv cbo i c = 25ma i e = 0ma 65 v bv ebo i e = 10ma i c = 0ma 3.5 v bv ces i c = 50ma v be = 0v 65 v i ces v ce = 50v i e = 0ma 25 ma h fe v ce = 5v i c = 0.25a 5200 symbol test conditions min. typ. max. unit p out f = 1025 - 1150 mhz p in = 90 w v ce = 50 v 400 w g p f = 1025 - 1150 mhz p in = 90 w v ce = 50 v 6.5 db power output vs. power input power output vs. frequency typical performance impedance data freq. mhz z in ( w )z cl ( w ) 1020 2.5 + j 3.2 1.6 - j 2.5 1090 2.2 + j 4.5 1.5 - j 2.7 1150 3.7 + j 2.1 1.3 - j 1.5
3/5 SD1541-01 test circuit component part list note: all dimensions in inches unless otherwise specified c1, c4 cold end terminated through eyelet. component description c1 0.4 - 2.5pf johanson gigatrim c2, c3, c4 0.6 - 4.5pf johanson gigatrim c5 82pf chip capacitor, 0.055 sq. l1 loop, #18 tinned, 0.36 wide x 0.27 above circuit l2 4 3/4 turns, #24 enameled, close wound, 0.075 i.d. z1 50 w (0.02 wide) z2 0.250 x 0.120 z3 50 w 0 .020 x 0.330; c1 tapped 0.15 from load z4 0.145 x 0.920 z5 0.325 x 0.180 z6 0.730 x 0.315 z7 0.710 x 0.425 with 0.140 x 0.150 cutout z8 0.035 x 0.780; c4 tapped 0.36 from cen z9 50 w board 3m epsilam10, 0.032 thk., 1 oz pc board layout
SD1541-01 4/5 ref. 1010935 rev. h m112 (.400 x .500 2lfl) mechanical data mm inch min. typ. max min. typ. max a 3.68 3.93 0.145 0.155 b 19.56 21.08 0.770 0.830 c 9.65 9.91 0.380 0.390 d 3.05 3.43 0.120 0.135 e 12.57 12.88 0.495 0.507 f 16.26 16.64 0.640 0.655 g 22.73 22.99 0.895 0.905 h 0.05 0.15 0.002 0.006 i 1.40 1.65 0.055 0.065 j 2.79 3.30 0.110 0.130 k 5.84 0.230 l 10.03 10.34 0.395 0.407 dim.
5/5 SD1541-01 information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsibility for the co nsequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specifications mentioned in this publicati on are subject to change without notice. this publication supersedes and replaces all information previously supplied. stmicroelectronics prod ucts are not authorized for use as critical components in life support devices or systems without express written approval of stmicroelectro nics. the st logo is registered trademark of stmicroelectronics a 2002 stmicroelectronics - all rights reserved all other names are the property of their respective owners. stmicroelectronics group of companies australia - brazil - canada - china - finland - france - germany - hong kong - india - israel - italy - japan - malaysia - malta - morocco - singapore - spain - sweden - switzerland - united kingdom - u.s.a. http://www.st.com
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