June 15, 2005 TELECOM TRANSFORMER LM302-1L FEATURES • Subminature, Low Profile • 10.7mm seated Height • Vacuum encapsulated • Tested at 6500 VDC • Meets or exceeds requirements of most international safety standards • Operating Temperature -20ºC to +85ºC, Storage Temperature -40ºC to +85º C APPLICATIONS • V.32, V.32 bis and V.34 MODEMS • INSTRUMENTATION • TELECOMMUNICATIONS ELECTRICAL SPECIFICATIONS AT 25°C IMPEDANCE PRIMARY 600 Ω SHUNT INDUCTANCE (MIN) SECONDARY 600 Ω SHUNT LOSS (TYP) TURNS RATIO 2.8 H 9000 Ω 1:1 LEAKAGE INDUCTANCE (TYP) @1KHz 1.5 dB DC RESISTANCE** (± 10%) PRIMARY 66 Ω FREQUENCY RESPONSE @200-3500Hz (MAX) -0.3 dB SECONDARY 66 Ω WIDE BAND RESPONSE @200-10 000Hz (MAX) -2.5 dB INSERTION LOSS @2KHz (MAX) RETURN LOSS @200-4000Hz (MIN) 21 dB INSULATION RESISTANCE @500VDC (MIN) LONGITUDINAL BALANCE (MIN) 80 dB DIELECTRIC STRENGTH DISTORTION @ 1kHz 0 dBM 14 mH 100 MΩ 6500 VDC ≤0.1% Note : * For use with recommended circuit (BS6305 impedance Class A non-speech or Class B speech) ** LM302-1L Is symmetrical meaning there is no real primary or secondary winding. OUTLINE DIMENSIONS: 2.5 TYP 4 1 DATATRONIC LM 302-1L DATE 8 12.7 +/- 0.15 17.9 MAX 5 17.9 MAX Dia 0.6 typ (4X) 2.5 TYP 10.7 MAX 4.0 MIN 3.0 TYP 5.08 TYP 3.0 TYP 7.62 5.08 TYP RECOMMENDED CIRCUITS 600 Ohm Matching (speech) 600 Ω 6 .8 µF ± 5 % BS6305 Class (A) Matching (non-speech) 33 nF ± 5% 370 Ω 3 .3 µ F 310nF L IN E 560 Ω ± 2% 27 nF ± 5% 1 : 1 ID E A L DATATRONIC: 68 nF ± 5% 47 nF ± 5% 620 Ω 820 Ω ± 2% 680Ω ± 5% 1 : 1 ID E A L 28151 Highway 74, Romoland, CA 92585 Tel: 951-928-7700, Toll Free Tel: 888-889-5391, Fax: 951-928-7701 E-Mail: [email protected] 499 King’s Road, Hong Kong Tel: (852) 2562 3858, (852) 2564 84 77 Fax: (852) 2565 7214, (852) 2563 1290 All specifications are subject to change without notice.