89 COUPLING TRANSFORMER SERIES EP - Using Ferrite EP cores these transformers are capable of handling 2.5mA to 5mA DC unbalanced. They are good for coupling and for RF telecommunication equipment. ELECTRICAL SPECIFICATION AT 25°C Part Number Pri Z (Ω) Sec Z (Ω) Lp min @ Max Unbalance 1 KHz 1 V ( mH ) ( DC mA ) Insertion Loss @ 1 KHz ( db ) Max Frequency Longitudinal Return Break-down Response balance min loss ( db ) voltage ( VRMS ) ( db ) ( db ) ERL min Pri to Sec 300 Hz to 3500 Hz Size EP13-0191 600 EP13-0192 900 600 900 NA NA 750 1000 1.0 1.0 ±0.25 ±0.25 60 60 26 26 1000 Volts 1000 Volts 1 1 EP17-0181 600 EP17-0182 900 600 900 2.5 2.5 750 1000 1.0 1.0 ±0.25 ±0.25 60 60 22 22 1000 Volts 1000 Volts 2 2 EP20-0171 EP20-0172 EP20-0173 EP20-0174 600 600 900 600 5 5 5 4 750 750 750 1250 0.8 0.8 0.8 0.8 ±0.25 ±0.25 ±0.25 ±0.25 60 60 60 60 26 26 26 26 1500 1500 1500 1500 3 3 3 3 NOTE: 600 600/SPLIT 600 900/SPLIT Volts Volts Volts Volts In the configuration of split primary, pins 1 and 4 for primary 1, and pins 2 and 5 for primary 2. SCHEMATIC FOR EP20 DIMENSIONS IN MILLIMETERS Size Width Max A Length Max B Height Max C Spacing between 2 windings nominal D Lead length nominal E Lead spacing nominal F 1 13.85 13.85 13.20 10.16 4.7 2.54 2 20.10 20.10 15.50 15.24 5.0 5.08 3 22.10 25.50 20.35 17.78 ±0.13 6.35 5.08 NOTE FOR EP13 & 17 2 7 1 5 4 9 4 8 SPLIT PRIMARY 1 9 4 2 EP 13 & 17 are also available with 8 terminal bobbins, instead of 10 as per drawing. In this case, primary will be pins 1 and 4, and secondary will be pins 5 and 8. 7 5 B O 1 C E F D O 2 O 3 O 4 O 5 A 10 O 9 O 8 O 7 O BOTTOM VIEW Associated Components Technology Phone 800 / 234-2645 Fax 714 / 265-4810 6 O