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d a t a sh eet preliminary specification 2001 jul 25 rev.0 discrete ceramics atv321 series surface-mount ceramic 50 ? , 1 to 20 db attenuators www.phycomp-components.com
2001 jul 25 rev.0 2 www.phycomp-components.com phycomp preliminary specification surface-mount ceramic 50 ? , 1 to 20 db attenuators atv321 series features ? reduced system size ? low assembly cost ? higher component and system reliability ? series includes twelve preset attenuation values. applications ? cellular phones ? pagers ? palmtop computers ? pdas. description the attenuators are constructed on a high grade ceramic body (aluminium oxide). the internal circuit is applied to the top surface of the substrate, and its design determines the required attenuation value. the attenuation layer is covered with a protective coating and a rectangular marker indicates input pin 1 as shown in the connection diagram of fig.1. finally, the four external end terminations are added. to guarantee optimum solderability the outer layer of the terminations consists of a lead-tin alloy. hbk077 13 24 input signal attenuated output signal fig.1 connection diagram. the rectangular marker designates input pin 1. quick reference data description value atv321 attenuation range 1 db to 20 db attenuation tolerance 1 to 5 db : 0.3 db (optional 0.2 db) 6 to 10 db : 0.5 db (optional 0.3 db) 15 db : 1.0 db (optional 0.5 db) 20 db : 2.0 db (optional 1.0 db) characteristic impedance 50 ? typ. frequency range 1 to 10 db : dc to 2.5 ghz 15 and 20 db : dc to 2.0 ghz vswr 1.3 max. maximum permissible voltage 50 v (dc or rms) power rating 40 mw climatic category (iec 60068) 55/125/56 basic specification iec 60 115-8
2001 jul 25 rev.0 3 www.phycomp-components.com phycomp preliminary specification surface-mount ceramic 50 ? , 1 to 20 db attenuators atv321 series functional description product characterization standard attenuation values include 1 db to 5 db with a tolerance of 0.3 db (optional 0.2 db), 6 db to 10 db with a tolerance of 0.5 db (optional 0.3 db), 15 db with a tolerance of 1.0 db (optional 0.5 db), and 20 db with a tolerance of 2.0 db (optional 1.0 db). limiting values type limiting voltage (v) limiting power (w) atv321 50 0.040 d erating the power that the attenuator can dissipate depends on the operating ambient temperature; see fig.2. handbook, halfpage mlb206 70 100 55 50 t amb ( c) o (%p ) rated 0 0 50 100 125 p max fig.2 maximum dissipation (p max ) in percentage of rated power as a function of the operating ambient temperature (t amb ).
2001 jul 25 rev.0 4 www.phycomp-components.com phycomp preliminary specification surface-mount ceramic 50 ? , 1 to 20 db attenuators atv321 series mechanical data mass per 100 units marking the atv321 is marked with a rectangle that indicates input pin 1 (see fig.3). p ackage marking the packing is marked and includes attenuation value, tolerance, catalogue number, quantity, production period, batch number and source code. type mass (g) atv321 0.116 outlines table 1 physical dimensions; see fig.3 symbol at v 3 21 unit value tol. l1.00 0.10 mm w1.00 0.10 mm t0.35 0.05 mm a0.33 0.10 mm b0.15 0.10 mm p0.65 0.10 mm d0.25 0.10 mm hbk076 l p b w t d a fig.3 outline drawing. for dimensions see table 1.
2001 jul 25 rev.0 5 www.phycomp-components.com phycomp preliminary specification surface-mount ceramic 50 ? , 1 to 20 db attenuators atv321 series ordering information table 2 ordering code indicating attenuator type ordering code (12nc) ? the attenuators have a 12-digit ordering code starting with 2350 ? the subsequent five digits indicate the attenuator type and packing; see table 2 ? the remaining three digits indicate the attenuation value and tolerance; see table 3 ? the first 2 digits indicate the attenuation value ? the last digit indicates the attenuation tolerance. table 3 attenuation value, tolerance and ordering code (12nc) o rdering example the ordering code of an atv321 with 2 0.3 db attenuation, supplied on paper tape of 5000 units per reel is: 2350 703 10022; the ordering code of the same attenuator supplied on paper tape of 10000 units per reel is: 2350 703 11022. type attenuation value tol. (%) ordering code 2350 ... ..... paper tape on reel paper tape on reel 5000 units 10000 units arv321 1 db to 20 db see table 3 703 10... 703 11... attenuation value (db) standard optional tolerance (db) 12nc tolerance (db) 12nc 1 0.3 2350 703 10012 0.2 2350 703 10011 2 0.3 2350 703 10022 0.2 2350 703 10021 3 0.3 2350 703 10032 0.2 2350 703 10031 4 0.3 2350 703 10042 0.2 2350 703 10041 5 0.3 2350 703 10052 0.2 2350 703 10051 6 0.5 2350 703 10063 0.3 2350 703 10062 7 0.5 2350 703 10073 0.3 2350 703 10072 8 0.5 2350 703 10083 0.3 2350 703 10082 9 0.5 2350 703 10093 0.3 2350 703 10092 10 0.5 2350 703 10103 0.3 2350 703 10102 15 1.0 2350 703 10154 0.5 2350 703 10153 20 2.0 2350 703 10205 1.0 2350 703 10204
2001 jul 25 rev.0 6 www.phycomp-components.com phycomp preliminary specification surface-mount ceramic 50 ? , 1 to 20 db attenuators atv321 series tests and requirements essentially all tests are carried out in accordance with the schedule of ? iec publication 60115-8 ? , category lct / uct / 56 (rated temperature range: l ower c ategory t emperature, u pper c ategory t emperature; damp heat, long term, 56 days). the testing also covers the requirements specified by eia and eiaj. the tests are carried out in accordance with iec publication 60 068, ? recommended basic climatic and mechanical robustness testing procedure for electronic components ? and under standard atmospheric conditions in accordance with ? iec 60068-1 ? , subclause 5.3. unless otherwise specified the following values apply: temperature: 15 cto35 c relative humidity: 25% to 75% air pressure: 86 kpa to 106 kpa (860 mbar to 1060 mbar). in table 4 the tests and requirements are listed with reference to the relevant clauses of ? iec publications 60115-8 and 60068 ? ; a short description of the test procedure is also given. in some instances deviations from the iec recommendations were necessary for our method of specifying. table 4 test procedures and requirements iec 60 115-8 clause iec 60068-2 test method test procedure requirements tests in accordance with the schedule of iec publication 60115-8 4.4.1 visual examination no holes; clean surface; no damage attenuation within the specified tolerance of the attenuator vswr 1.3 4.18 20 (tb) resistance to soldering heat unmounted chips completely immersed for 10 1 s in a solder bath at 260 5 c no visible damage; ? db max.: 0.1 db 4.13 short time overload room temperature; p = 6.25 p n ; 5s (v 2 v max ) ? db max.: 0.3 db 4.33 bending attenuators mounted on a 90 mm glass epoxy resin pcb (fr4), bending: 3 mm no visible damage; ? db max.: 0.3 db 4.19 14 (na) rapid change of temperature 30 minutes at lct and 30 minutes at uct; 5 cycles no visible damage; ? db max.: 0.3 db 4.24.2 3 (ca) damp heat 56 days; 40 2 c; 93 +2/ ? 3% rh; loaded with 0.01 p n ? db max.: 0.3 db 4.25.1 endurance 1000 +48 /? 0 hours; 70 2 c; loaded with p n or v max ; 1.5 hours on and 0.5 hours off no visible damage; ? db max.: 0.3 db 4.17 20 (ta) solderability unmounted chips completely immersed for 5 1 s in a solder bath at 235 5 c good tinning ( 95% covered); no visible damage 4.6.1.1 insulation resistance 50 v (dc) after 1 minute, metal block method r ins min.: 10 3 m ?
2001 jul 25 rev.0 7 www.phycomp-components.com phycomp preliminary specification surface-mount ceramic 50 ? , 1 to 20 db attenuators atv321 series other applicable tests (jis) c 5202 7.9 endurance (under damp and load) 1000 +48/ ? 0 hours; 40 2 c; 93 +2 /? 3% rh; loaded with p n or v max ; 1.5 hours on and 0.5 hours off no visible damage; ? db max.: 0.3 db eia 575 3.13 leaching unmounted chips; 60 1 s; 260 5 c good tinning; no leaching eia/is 703 4.5 load humidity 1 000 +48/ ? 0 hours; 85 2 c; 85 5% rh; loaded with 0.01 p n or v max no visible damage; ? db max.: 0.3 db iec 60 115-8 clause iec 60068-2 test method test procedure requirements
2001 jul 25 rev.0 8 www.phycomp-components.com phycomp preliminary specification surface-mount ceramic 50 ? , 1 to 20 db attenuators atv321 series mounting due to their rectangular shape and small dimensional tolerances, surface-mounted attenuators are suitable for handling by automatic placement systems. chip placement can be on ceramic substrates and printed-circuit boards (pcbs). electrical connection to the circuit is by soldering. the finishing of the end terminations guarantees a reliable contact. soldering conditions the robust construction of chip attenuators allows them to be completely immersed in a solder bath of 260 c for one minute. therefore, it is possible to mount surface-mount attenuators on one side of a pcb and other components on the reverse side (mixed pcbs). surface-mount attenuators are tested for solderability at 235 c during 2 seconds. the test condition for no leaching is 260 c for 60 seconds. typical examples of soldering processes that provide reliable joints without any damage, are given in figs 4 and 5. 0 50 100 150 200 250 300 250 200 150 100 50 0 10 s 260 c 130 c ( c) t (s) mla859 245 c 215 c 180 c 10 s 40 s 2 k/s t fig.4 infrared soldering. typical values (solid line). process limits (dotted lines).
2001 jul 25 rev.0 9 www.phycomp-components.com phycomp preliminary specification surface-mount ceramic 50 ? , 1 to 20 db attenuators atv321 series fig.5 double wave soldering. typical values (solid line). process limits (dotted lines). the attenuators may be soldered twice in accordance with this method if desired. 0 50 100 150 200 250 300 250 200 150 100 50 0 10 s 235 c to 260 c second wave 5 k/s 2 k/s first wave 200 k/s 100 c to 130 c forced cooling 2 k/s ( c) t (s) t mla861
2001 jul 25 rev.0 10 www.phycomp-components.com phycomp preliminary specification surface-mount ceramic 50 ? , 1 to 20 db attenuators atv321 series packing tape and reel specifications all tape and reel specifications are in accordance with ? iec 60286-3 ? . basic dimensions are given in figs 6, 7 and 8 and tables 5, and 6. peel-off force peel-off force of paper tape is in accordance with ? iec 60286-3 ? ; that is, at a peel-off speed of 300 10 mm/minute, 0.1 n to 1.0 n for 8 mm tape. the peel-off angle should be between 165 and 180 . paper tape specification table 5 dimensions of paper tape; see fig.6 symbol atv321 unit size tol. a 0 1.15 0.10 mm b 0 1.15 0.10 mm w8.0 0.2 mm e1.75 0.10 mm f3.50 0.05 mm d 0 1.5 +0.1/ ? 0mm p 0 4.0 0.1 mm p 1 2.0 0.05 mm p 2 2.0 0.05 mm t0.45 0.05 mm handbook, full pagewidth mbg251 e f w p 2 p 0 p 1 d 0 b 0 a 0 t cover tape fig.6 paper tape. cumulative tolerance over 10 holes: 0.2 mm. bottom fixing tape thickness: 50 10 m. top fixing tape thickness: 50 10 m. for dimensions see table 5.
2001 jul 25 rev.0 11 www.phycomp-components.com phycomp preliminary specification surface-mount ceramic 50 ? , 1 to 20 db attenuators atv321 series tape leader/trailer specification taping requirements ? attenuator side facing up ? component is free and not sticking to top and/or bottom tape ? component should be easy to remove from the carrier tape and the chip cavity should have no mechanical damage. ccb325 empty compartments with cover tape (min. 240 mm) cover tape only leader 400 mm trailer (max. 260 mm) trailer end leader end fig.7 leader/trailer tape.
2001 jul 25 rev.0 12 www.phycomp-components.com phycomp preliminary specification surface-mount ceramic 50 ? , 1 to 20 db attenuators atv321 series reel specification table 6 reel dimensions; see fig.8 product units per reel tape width (mm) a (mm) n (mm) c (mm) w 1 (mm) w 2 max. (mm) at v 3 21 5000 8.0 180 + 0/ ? 362 1.5 12.75 + 0.15/ ? 0.0 8.4 + 0.15/ ? 0.0 11.4 10000 n ca w 1 w 2 hbk039 fig.8 reel. dimensions in mm. for reel dimensions see table 6.
2001 jul 25 rev.0 13 www.phycomp-components.com phycomp preliminary specification surface-mount ceramic 50 ? , 1 to 20 db attenuators atv321 series revision history revision date change notification description rev.0 2001 jul 25 ? - first issue of this specification

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