etaldoc 772/3 page 1 of 5 june 2005 product data sheet low insertion loss P3304 line matching transformer features applications ? lead-free (pb-free) ? legerity qslac ? rohs compliant ? slic interfaces ? low insertion loss, <1db ? 3.3v operation ? 12.6mm (0.5?) seated height ? industry standard pinout ? iec 950 and ul 60950 certified ? ul recognized component ? environmentally tested to iec 68 ? cert reliability tested ? 1.5:1 turns ratio ? excellent frequency response ? simple matching ? high thermal stability description P3304 is intended for voice applications where good distortion at moderate power levels is required with low insertion loss. P3304 uses patented design and construction methods to achieve excellent signal performance and safety isolation to international standards. P3304 is certified to iec 950 and ul 60950. P3304 is a ul recognized component, and is supported by an iec cb test certificate. the part is completely lead-free, compliant with rohs directive 2002/95/ec, and suitable for lead-free and conventional processing. P3304 has exceptionally flat frequency response from 100hz to 10khz, a 3db bandwidth of typically 90khz and requires only the very simplest of matching to achieve good return loss and transhybrid loss across the voiceband, with low levels of signal distortion at signal frequencies as low as 200hz. P3304 has very low leakage inductance and winding resistances and is designed for use with 3.3v legerity qslac devices. for 5v devices use p3303 (1:1 ratio). P3304 has been subjected to relevant environmental testing according to iec 68 and combined environmental reliability testing (cert) beyond normal operational levels and passed all tests, remaining fully functional. patented
P3304 etaldoc 772/3 page 2 of 5 june 2005 specifications electrical at t = 25oc and as test circuit fig. 2 unless otherwise stated. parameter conditions min typ max units insertion loss (corrected for ratio) f = 2khz - 0.9 - db frequency response lf -3db cutoff hf -3db cutoff 200hz ? 4khz - - - 30 90 - - - 0.1 hz khz db return loss 200hz ? 4khz - 20 - db transhybrid loss 200hz ? 4khz - 30 - db third harmonic distortion (1) (3) 300hz 0dbm in line 600hz -10dbm in line - - -70 -95 - - dbm dbm signal handling (3) 300hz pins 1-3 200hz pins 1-3 300hz pins 4-6 200hz pins 4-6 - - - - 3.5 2.5 2.3 1.7 - - - - vrms vrms vrms vrms voltage isolation (2) 50hz dc 2.12 3.0 - - - - kvrms kv turns ratio (5) pins 1-3 : 6-4 1.50 1.50 1.50 - operating range: functional storage 0 -40 - - +70 +85 oc oc lumped equivalent circuit parameters as fig. 1 dc resistance (3) primary resistance r dcp secondary resistance r dcs 34 23 - - 42 28 leakage inductance, l 1.7 - 2.8 mh shunt inductance, lp (4) 10mv 200hz 4 6 - h shunt loss, rp (4) 10mv 200hz 8 10 - k notes: 1. third harmonic typically exceeds other harmonics by 10db. 2. components are 100% tested at 3.25kvdc. 3. caution: do not pass dc through windings. telephone line current must be diverted using semiconductor line hold circuit or choke. 4. at signal levels greater than 100mv, lp will increase and rp will decrease slightly but the effect is usually favourable to the return loss characteristic. 5. ratio is exact. for 1:1 version use p3303. equivalent circuit fi g . 1 ideal 1.5:1 ? l ? l r r
P3304 etaldoc 772/3 page 3 of 5 june 2005 matching recommendations txa1/txa2 represent low impedance transmit outputs. rxa represents a high impedance receive input. transhybrid loss in specification table assumes txa1 and txa2 are balanced outputs. other hybrid arrangements are possible. construction dimensions shown are in millimetres (inches). geometric centres of outline and pin grid coincide within a tolerance circle of 0.6mm?. observe correct orientation in circuit. total weight typically 7g. patented 600 t est circuit fi g . 2 li ne 600 270 rxa t xa2 t xa1 4.7 f 1.5:1 1 34 6 connections 1.5:1 dimensions e 2
P3304 etaldoc 772/3 page 4 of 5 june 2005 environmental testing reliability testing to iec 68 tested to clauses of iec 68 and compliant with all functi onal and safety requirements following exposure as follows: test description iec 68 reference test details result robustness of terminations 68-2-21 test ua 1 68-2-21 test ua 2 tensile 5n pull thrust 1n push no impairment no pin detachment or distortion solderability 68-2-20 test ta method 1 solder bath 235oc 2s resistance to soldering heat 68-2-20 test tb method 1a 68-2-20 test tb method 2 solder bath 260oc 10s soldering iron 350oc 5s no impairment finish smooth, bright and even vibration 68-2-6 test fc sweep 10-55-10hz in 1 minute amplitude 1.5mm pk-pk duration 2h per axis, 3 axes no impairment shock 68-2-27 test ea peak acceleration 1000m/s 2 duration of pulse 6ms 3 shocks each direction on 3 axes no impairment cold 68-2-1 test ab -25oc 16h recovery to ambient 1-2h no impairment dry heat 68-2-2 test bb 125oc 16h recovery to ambient 1-2h no impairment damp heat 68-2-3 test ca 40oc 4 days, rh 93% recovery to ambient 1-2h no impairment change of temperature 68-2-14 test na t a ?25oc t b +85oc t 1 30 min 2 min t 2 3 min recovery to ambient 1-2h 5 cycles no impairment combined environmental re liability testing (cert) components step stressed at increasing levels of severity using combined stresses to detect potential weaknesses. results are shown for highest levels of stress tested. compliant with all functional and safety tests following exposure as follows: test description test details duration result storage test thermal cycling -30oc to +100oc at 11oc/min 6mm pk 2-9hz at 1 octave/min 20m/s 2 9-200hz 20 mins per plane no impairment transportation test thermal cycling -65oc to +80oc random vibration 10-200hz and 200-2000hz at 57m/s 2 rms 2 hours per plane no impairment
P3304 etaldoc 772/3 page 5 of 5 june 2005 safety absolute maximum ratings (ratings of components independent of circuit). constructed in accordance with iec 60950-1, en 60950-1 and ul 60950-1, supplementary insulation, 250vrms maximum working voltage, flammability class v-0. there are no special installation requirements (beyond attending to usual pcb track separations) since the integral cover provides supplementary insulation from its external faces to internal core and windings. short term isolation voltage (1s) dc current storage temperature lead temperature, 10s 2.12kvrms, 3.0 kvdc 100 a -40oc to +85oc 260oc certification intellectual property rights certified under the iec cb scheme (certificate gb445w) to iec 950:1991, up to amendment 4, sub- clauses 1.5, 1.5.1, 1.5.3, 2.2, 2.2.3, 2.2.4, 2.9.2, 2.9.3, 2.9.4, 4.4, 4.4.3.2 (class v-0) and 5.3 for a maximum working voltage of 250vrms, nominal mains supply voltage not exceeding 300vrms and a maximum operating temperature of 70oc in pollution degree 2 environments. recognized under the component recognition program of underwriters laboratories inc. to us and canadian requirements can/csa c22.2 no. 60950-1-03/ul60950-1, first edition, based on iec 60950-1, first edition, maximum working voltage 180vrms (creepage), 420v peak (clearance), pollution degree 2, supplementary insulation. ul file number e203175. additionally, profec technologies certifies all transformers as providing voltage isolation of 2.12kvrms, 3kv dc minimum. all shipments are supported by a certificate of conformity to current applicable safety standards. etal p3303 and P3304 are trade marks of profec technologies ltd. the trade mark etal is registered at the uk trade marks registry. amd and qslac are trademarks of advanced micro devices, inc. profec technologies ltd. is the owner of the design right under the copyright designs and patents act 1988 and no rights or licences are hereby granted or implied to any third party. P3304 design and construction are protected by patents and registered design. british patent no. 2333646. usa patent nos. 6, 344, 787; 6,690,254 european patent no. 1082734 china patent no. zl 99806739.3 uk registered design no. 2077360. french registered design no. 991512. united states registered design 426, 815. mexico registered design 12143 other patents and registered designs pending. ? 1998 - 2005 profec technologies ltd. reproduction prohibited. etal group oy, kuormatie 14, fin-03101, nummela telephone: +358 (0)20 7500 330 fax: +358 (0)20 7500 333 website: www.etalgroup.com email: etalgroup@egruppen.com fm 25326 iso 9001 e203175
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