1/6 october, 5 2001 AM80912-085 rf & microwave transistors avionics applications ? refractory/gold metallization ? emitter site ballasted ? 5:1 vswr capability ? low thermal resistance ? input/output matching ? overlay geometry ? metal/ceramic hermetic package ? p out = 80 w min. with 7.27 db gain description the AM80912-085 is designed for specialized avionics applications including jtids, where power is provided under pulse formats utilizing short pulse widths and high burst or overall duty cycles. the AM80912-085 is housed in a unique big- pac tm hermetic metal/ceramic package with internal input/output impedance matching. pin connection 1 3 42 1. collector 2. base 3. emitter 4. base so42 hermetically sealed order code AM80912-085 branding 80912-085 absolute maximum ratings (t case = 25 c) symbol parameter value unit p diss power dissipation * (t c 100 c ) 300 w i c device current * 8.0 a v cc collector-supply voltage * 40 v t j junction temperature (pulsed rf operation) 250 c t stg storage temperature - 65 to +200 c thermal data r th(j-c) junction -case thermal resistance * 0.75 c/w * applies only to rated rf amplifier operation
AM80912-085 2/6 electrical specification (t case = 25 c) static dynamic symbol test conditions min. typ. max. unit bv cbo i c = 25ma i e = 0ma 55 v bv ebo i c = 0ma i e = 10ma 3.5 v bv cer i c = 25ma r be = 10 w 55 v i ces v be = 0v v ce = 35v 20 ma h fe v ce = 5v i c = 3a 20 200 symbol test conditions min. typ. max. unit p out f = 960 - 1215mhz p in = 15 w v cc = 35v 80 w g p f = 960 - 1215mhz p in = 15 w v cc = 35v 7.27 db h c f = 960 - 1215mhz p in = 15 w v cc = 35v 35 % note: pulse format: 6.4 m s on 6.6 m s off, repeat for 3.3 ms, then off for 4.5125 ms duty cycle: burst 49.2%, overall 20.8%
3/6 AM80912-085 typical input impedance p in = 15 w v cc = 35 v normalized to 20 ohms typical collector load impedance p in = 15 w v cc = 35 v normalized to 20 ohms freq. z in ( w) z cl ( w) l = 960 mhz 3.0 + j 5.0 7.0 - j 5.0 = 1025 mhz 3.5 + j 6.0 5.3 - j 3.0 m = 1090 mhz 5.5 + j 5.5 3.7 - j 1.8 = 1150 mhz 5.5 + j 5.0 3.3 - j 2.0 h = 1215 mhz 5.3 + j 4.5 3.0 - j 2.5 impedance data
AM80912-085 4/6 test circuit schematic test circuit component part list c1, c2 0.6 - 4.5 pf giga-trim variable capacitor c3 100 pf surface mount ceramic chip capacitor c4 1000 pf resin sealed #8-32 threaded feedthru capacitor c5 100 m f / 63 v aluminum electrolytic axial lead capacitor l1, l2 inductor 4 turns #26 awg, id = 0.0625 [1.58] solid tinned bus bar wire pcb 0.025 inch thick al 2 o 3 , e r = 9.6 +vcc
5/6 AM80912-085 ref.: 1011416b so42 (.400 x .400 2/l herm. w/flg.) mechanical data mm inch min. typ. max min. typ. max a 0.51 0.76 0.020 0.030 b 6.35 0.250 c 9.55 10.06 0.376 0.396 d 2.79 3.30 0.110 0.130 e 10.03 10.34 0.395 0.407 f 4.90 0.193 g 11.43 0.450 h 3.18 0.125 i 16.26 16.76 0.640 0.660 j 22.61 23.11 0.890 0.910 k 10.03 10.54 0.395 0.415 l 0.10 0.18 0.004 0.006 m 1.32 1.83 0.052 0.072 n 2.84 3.35 0.112 0.132 p 5.84 0.230 q 22.35 23.37 0.880 0.920 dim.
AM80912-085 6/6 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 2001 stmicroelectronics - all rights reserved all other names are the property of their respective owners. stmicroelectronics group of companies australia - brazil - china - finland - france - germany - hong kong - india - italy - japan - malaysia - malta - morocco - singapore - spain - sweden - switzerland - united kingdom - u.s.a. http://www.st.com
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