avionics applications rf & microwave transistors .250 sq. 2lfl (m105) hermetically sealed . designed for high power pulsed iff, dme, tacan applications . 20 watts (typ.) iff 1030 - 1090 mhz . 15 watts (min.) dme 1025 - 1150 mhz . 15 watts (typ.) tacan 960 - 1215 mhz . 10 db min. gain . refractory gold metallization . emitter ballasting and low thermal resistance . 20:1 load vswr capability at specified operating conditions . input matched, common base configuration description the SD1528-08 is a gold metallized, silicon npn power transistor. the SD1528-08 is designed for applications requiring high peak power and low duty cycles such as iff, dme and tacan. the SD1528-08 is packaged in the .250" input matched hermetic stripline flange package resulting in im- proved broadband performance and a low thermal resistance. pin connection branding 1528-8 order code SD1528-08 absolute maximum ratings (t case = 25 c) symbol parameter value unit v cbo collector-base voltage 65 v v ceo collector-emitter voltage 65 v v ebo emitter-base voltage 3.5 v i c device current 1.5 a p diss power dissipation 87.5 w t j junction temperature +200 c t stg storage temperature - 65 to +150 c r th(j-c) junction-case thermal resistance 2.0 c/w SD1528-08 1. collector 3. emitter 2. base thermal data november 1992 1/4
electrical specifications (t case = 25 c) symbol test conditions value unit min. typ. max. p out f = 1025 1150mhz p in = 1.5 w v ce = 50 v 15 w g p f = 1025 1150mhz p in = 1.5 w v ce = 50 v 10 db h cf = 1025 1150mhz p in = 1.5 w v ce = 50 v 30 % note: pulse width = 10 m sec, duty cycle = 1% static symbol test conditions value unit min. typ. max. bv cbo i c = 10ma i e = 0ma 65 v bv ces i c = 25ma v be = 0v 65 v bv ebo i e = 1ma i c = 0ma 3.5 v i ces v ce = 50v i e = 0ma 2 ma dynamic typical performance power output vs power input power output vs frequency SD1528-08 2/4
test circuit c1 : 1000 m f electrolytic c2 : 680pf chip capacitor c3 : 120pf chip capacitor c4 : 0.6 - 4.5pf johanson gigatrim l1 : 6 1/2 turns, #22 awg on a #30 drill bit z : printed transmission line, length = 1.91" board : er = 2.5, .034" thick all dimensions are in inches. impedance data typical input impedance typical collector load impedance SD1528-08 3/4
package mechanical data ref.: dwg. no.12-0105 information furnished is believed to be accurate and reliable. however, sgs-thomson microelectronics assumes no responsability for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. no license is granted by implication or otherwise under any patent or patent rights of sgs-thomson microelectronics. specification s mentioned in this publication are subject to change without notice. this publication supersedes and replaces all information previously s upplied. sgs-thomson microelectronics products are not authorized for use as critical components in life support devices or systems with out express written approval of sgs-thomson microelectonics. ? 1994 sgs-thomson microelectronics - all rights reserved sgs-thomson microelectronics group of companies australia - brazil - france - germany - hong kong - italy - japan - korea - malaysia - malta - morocco - the netherlands - singapore - spain - sweden - switzerland - taiwan - thailand - united kingdom - u.s.a SD1528-08 4/4
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