7-5 183 (7.2) 178 (7.0) 346 (13.6) 266 (10.5) 712 (28.0) 702 (27.6) 60 (2.4) 50 (2.0) 9 (0.4) 7 (0.3) 280 (11.0) 200 (7.8) 115 (4.5) 105 (4.1) 125 (4.9) 115 (4.5) 290 50 (11.0) 200 (7.8) 9 (0.4) 7 (0.3) 60 (2.4) 50 (2.0) 183 (7.2) 178 (7.0) 712 (28.0) 702 (27.6) 280 50 (10.6) 190 (7.5) l = 0.1 nh dimensions in mm (1/1000 inch) l = 0.1 nh description the hsch-9101 single, the hsch-9201 series pair, and the hsch-9251 anti-parallel pair are advanced gallium arsenide schot- tky barrier diodes. these devices are fabricated utilizing molecular beam epitaxy (mbe) manufactur- ing techniques and feature rug- ged construction and consistent electrical performance. a polyim- ide coating provides scratch pro- tection and resistance to contamination. agilent hsch-9101 , -9201 , and -9251 gaas beam lead schottky barrier diodes data sheet features ? gold tri-metal system for improved reliability ? low capacitance ? low series resistance ? high cutoff frequency ? polyimide passivation ? multiple configurations 712 (28.0) 702 (27.6) l = 0.1 nh 270 (10.6) 190 (7.5) 636 (25.0) 626 (24.6) 9 (0.4) 7 (0.3) 60 (2.4) 50 (2.0) 183 (7.2) 178 (7.0) 280 (11.0) 200 (7.8) 125 (4.9) 115 (4.5) hsch-9251 junction side up hsch-9201 hsch-9101
7-6 hsch-9251 /rev3.0 applications this line of schottky diodes is op- timized for use in mixer applica- tions at millimeter wave frequencies. some suggested mixer types are single ended and single balanced for the single and series pair. the anti-parallel pair is ideal for harmonic mixers. assembly techniques diodes are esd sensitive. esd preventive measures must be em- ployed in all aspects of storage, handling, and assembly. diode esd precautions, handling considerations, and bonding methods are critical factors in successful diode performance and reliability. agilent application note #55, "beam lead diode bonding and handling procedures" provides basic information on these sub- jects. maximum ratings power dissipation at t lead = 25 c ............................. 75 mw per junction measured in an infinite heat sink derated linearly to zero at maximum rated temperature operating temperature ..................................................... -65 c to + 150 c storage temperature ......................................................... -65 c to +150 c mounting temperature ............................................ 235 c for 10 seconds minimum lead strength .................................................................. 6 grams electrical specifications @ t a = 25 c symbol parameters and test conditions part number hsch-9101 hsch-9201 tc494 hsch-9251 units min. typ. max. min. typ. max. min. typ. max. c j [1] [1]. junction capacitance is determined by measuring total device capacitance and subtracting the calculated parasitic capacitance (0.035 pf). junction capacitance v r = 0 v, f = 1 mhz 0.040 0.050 0.040 0.050 0.040 pf d c j [1] junction capacitance v r = 0 v, f = 1 mhz 0.005 0.010 pf r s [2] [2]. series resistance is determined by measuring the dynamic resistance and subtracting the calculated junction resistance of 6 w . series resistance 6 6 6 w v f1 forward voltage i f = 1 ma 700 800 700 800 700 800 mv v f10 forward voltage i f = 10 ma 800 850 800 850 800 850 mv d v f forward voltage i f = 1 ma and 10 ma 15 15 mv v br reverse breakdown voltage v r = v br measure i r 10 m a (per junction) 4.5 4.5 v
hsch-9251 /rev3.0 7-7 100 200 300 8 7 6 0 2 4 6 8 10 12 14 n f z if local oscillator power (dbm) figure 2. typical noise figure and i.f. impedance vs. local oscillator power, for hsch-9101 and hsch-9201 n o i s e f i g u r e ( d b ) ~ ~ ~ ~ ~ ~ f o r w a r d c u r r e n t ( m a ) +125 c +25 c -55 c 0 0.2 0.4 0.6 0.8 1.0 1.2 0.01 0.1 1 10 100 forward voltage (v) figure 1. typical forward characteristics for hsch-9101 , hsch-9201 , and hsch-9251 spice parameters parameter units hsch-9xxx b v v 5 c j0 pf 0.04 e g ev 1.43 i bv a 10e-5 i s a 1.6 x 10e-13 n 1.20 r s w 5 p b v 0.7 p t 2 m 0.5 typical parameters this data sheet contains a variety of typical and guaranteed performance data. the information supplied should not be interpreted as a complete list of circuit specifications. in this data sheet the term typical refers to the 50th percentile performance. for additional information contact your local agilent technologies sales representative. i f i m p e d a n c e ( o h m s )
7-8 hsch-9251 /rev3.0 notes:
|
