surface mount microwave schottky detector diodes technical data hsms-2850 series hsms-2860 series hsms-2860 package lead code identification * for more information see the surface mount schottky reliability data sheet. description hewlett-packards hsms-2850 family of zero bias schottky detector diodes and the hsms-2860 family of dc biased detector diodes have been designed and optimized for use from 915 mhz to 5.8 ghz. they are ideal for rf/id and rf tag applications requiring small and large signal detection, modula- tion, rf to dc conversion or voltage doubling. available in various package configurations, these two families of detector diodes provide low cost solutions to a wide variety of design problems. hewlett- packards manufacturing techniques assure that when two diodes are mounted into a single sot-23 or sot-143 package, they are taken from adjacent sites on the wafer, assuring the highest possible degree of match. features ? surface mount sot-23/ sot-143 package ? high detection sensitivity: up to 50 mv/ m w at 915 mhz up to 35 mv/ m w at 2.45 ghz up to 25 mv/ m w at 5.80 ghz ? low flicker noise: -162 dbv/hz at 100 hz ? low fit (failure in time) rate* ? tape and reel options available common
cathode #4 unconnected
pair #5 common
anode #3 series #2 single #0 12 3 12 34 12 3 12 3 12 3 hsms-2850 package lead code identification unconnected
pair #5 series #2 single #0 12 3 12 34 12 3
2 dc electrical specifications, t a = +25 c, single diode part package maximum typical number marking lead forward voltage capacitance hsms- code [1] code configuration v f (mv) c t (pf) 2850 p0 0 single 150 250 0.30 2852 p2 2 series pair [2,3] 2855 p5 5 unconnected pair [2,3] 2860 t0 0 single 250 350 0.30 2862 t2 2 series pair [2,3] 2863 t3 3 common anode [2,3] 2864 t4 4 common cathode [2,3] 2865 t5 5 unconnected pair [2,3] test i f = 0.1 ma i f = 1.0 ma v r = C0.5 v to C1.0v conditions f = 1 mhz notes: 1. package marking code is in white. 2. d v f for diodes in pairs is 15.0 mv maximum at 1.0 ma. 3. d c t for diodes in pairs is 0.05 pf maximum at C0.5 v. rf electrical specifications, t a = +25 c, single diode typical part typical tangential sensitivity typical voltage sensitivity video number tss (dbm) @ f = g (mv/ m w) @ f = resistance hsms- 915 mhz 2.45 ghz 5.8 ghz 915 mhz 2.45 ghz 5.8 ghz rv (k w ) 2850 C 57 C 56 C 55 40 30 22 8.0 2852 2855 test video bandwidth = 2 mhz power in = C 40 dbm conditions zero bias r l = 100 k w , zero bias 2860 C 57 C 56 C 55 50 35 25 5.0 2862 2863 2864 2865 test video bandwidth = 2 mhz power in = C40 dbm conditions i b = 5 m ar l = 100 k w , i b = 5 m a
3 equivalent circuit model hsms-2850, hsms-2860; singles spice parameters parameter units hsms-285x hsms-286x b v v 3.8 7.0 c j0 pf 0.18 0.18 e g ev 0.69 0.69 i bv a 3 x 10e-4 10e-5 i s a 3 x 10e-6 5.0 x 10e-8 n 1.06 1.08 r s w 25 5.0 p b (vj) v 0.35 0.65 p t (xti) 2 2 m 0.5 0.5 0.18 pf r j r s 0.08 pf 2 nh r j = 8.33 x 10 -5 nt
i b + i s
where
i b = externally applied bias current in amps
i s = saturation current (see table of spice parameters)
t = temperature, k
n = identity factor (see table of spice parameters) r s = series resistance (see table of spice parameters) esd warning: handling precautions should be taken to avoid static discharge. absolute maximum ratings, t a = +25 c, single diode symbol parameter absolute maximum [1] hsms-285x hsms-286x p t total device dissipation [2] 75 mw 250 mw p iv peak inverse voltage 2.0 v 4.0 v t j junction temperature 150 c 150 c t stg storage temperature -65 c to 150 c-65 c to 150 c t op operating temperature -65 c to 150 c-65 c to 150 c notes: 1. operation in excess of any one of these conditions may result in permanent damage to the device. 2. cw power dissipation at t lead = +25 c. derate linearly to zero at maximum rated temperature.
4 typical parameters, single diode 1 10 100 1 10 forward current ( a) forward voltage difference (mv) voltage out (mv) power in (dbm) 0.05 0.15 0.20 0.10 0.25 forward voltage (v) figure 3. typical forward voltage match, hsms-2860 pairs. .01 .1 1 10 100 0.1 0.2 0.3 0.4 0.7 0.6 0.8 0.9 0.5 1.0 forward current (ma) forward voltage (v) figure 2. typical forward current vs. forward voltage at temperature, hsms-2860 series. figure 1. typical forward current vs. forward voltage, hsms-2850 series. 1 10 100 1000 10,000 ?0 ?0 ?0 0 ?0 10 figure 6. dynamic transfer characteristic as a function of dc bias, hsms-2860. figure 4. +25 c output voltage vs. input power, hsms-2850 at zero bias, hsms-2860 at 3 a bias. figure 5. +25 c expanded output voltage vs. input power. see figure 4. 5 35 30 40 10 15 20 25 .1 1 10 100 output voltage (mv) bias current ( a) figure 7. voltage sensitivity as a function of dc bias current,
hsms-2860. figure 8. output voltage vs. temperature, hsms-2850 series. t a = +85 c
t a = +25 c
t a = ?5 c
i f (left scale) ? v f (right scale) frequency = 2.45 ghz
fixed-tuned fr4 circuit
r l = 100 k 20 a
5 a
10 a
input power =
?0 dbm @ 2.45 ghz
data taken in fixed-tuned
fr4 circuit
r l = 100 k i f ?forward current (ma) 0 0.01 v f ?forward voltage (v) 0.8 1.0 100 1 0.1 0.2 1.8 10 1.4 0.4 0.6 1.2 1.6 voltage out (mv) -50 0.1 power in (dbm) -30 -20 10000 10 1 -40 0 100 -10 1000 r l = 100 k w 5.8 ghz diodes tested in fixed-tuned
fr4 microstrip circuits. 915 mhz 2.45 ghz voltage out (mv) -50 0.3 power in (dbm) -30 10 1 -40 30 r l = 100 k w 2.45 ghz 915 mhz 5.8 ghz diodes tested in fixed-tuned
fr4 microstrip circuits. output voltage (mv) 0 0.9 temperature ( c) 40 50 3.1 2.1 1.5 10 100 2.5 80 20 30 70 90 60 1.1 1.3 1.7 1.9 2.3 2.7 2.9 measurements made using a
fr4 microstrip circuit. frequency = 2.45 ghz
p in = -40 dbm
r l = 100 k w applications information see the hsms-285a data sheet.
5 profile option descriptions #l30 = bulk #l31 = 3k pc. tape and reel, device orientation figures 9, 10 tape and reeling conforms to electronic industries rs-481, taping of surface mounted components for automated placement. outline 143 (sot-143) package dimensions outline 23 (sot-23) ordering information specify part number followed by option. for example: h sms - 285x #x xx bulk or tape and reel option profile: low = l part number surface mount schottky hewlett-packard 3 1 2 x x package
marking
code side view top view end view dimensions are in millimeters (inches) 1.02 (0.040)
0.89 (0.035) 0.50 (0.024)
0.45 (0.018) 1.40 (0.055)
1.20 (0.047) 2.65 (0.104)
2.10 (0.083) 3.06 (0.120)
2.80 (0.110) 2.04 (0.080)
1.78 (0.070) 1.02 (0.041)
0.85 (0.033) 0.152 (0.006)
0.066 (0.003) 0.10 (0.004)
0.013 (0.0005) 0.69 (0.027)
0.45 (0.018) 0.54 (0.021)
0.37 (0.015) dimensions are in millimeters (inches) 0.10 (0.004) 0.013 (0.0005) 0.92 (0.036) 0.78 (0.031) e e b c xx package marking code 1.40 (0.055) 1.20 (0.047) 2.65 (0.104) 2.10 (0.083) 0.54 (0.021) 0.37 (0.015) 0.60 (0.024) 0.45 (0.018) 2.04 (0.080) 1.78 (0.070) 3.06 (0.120) 2.80 (0.110) 0.15 (0.006) 0.09 (0.003) 1.02 (0.041) 0.85 (0.033) 0.69 (0.027) 0.45 (0.018)
www.hp.com/go/rf for technical assistance or the location of your nearest hewlett-packard sales office, distributor or representative call: americas/canada: 1-800-235-0312 or 408-654-8675 far east/australasia: call your local hp sales office. japan: (81 3) 3335-8152 europe: call your local hp sales office. data subject to change. copyright ? 1998 hewlett-packard co. obsoletes 5966-0928e, 5966-2939e printed in u.s.a. 5966-4283e (3/98) package characteristics lead material alloy 42 lead finish tin-lead 85/15% max. soldering temp. 260 c for 5 sec. min. lead strength 2 pounds pull typical package inductance 2 nh (opposite leads) typical package capacitance 0.08 pf (opposite leads) device orientation figure 10. option l31 for sot-143 packages. figure 9. option l31 for sot-23 packages. user
feed
direction cover tape carrier
tape reel end view 8 mm 4 mm top view 8 mm 4 mm
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