FIGURE 1: SCHEMATIC DIAGRAM TABLE 1: ELECTRICAL SPECIFICATIONS AT 25 OC ISDN U ISOLATION TRANSFORMER. PARAMETER MIN. TURNS RATIO: 9-7 : 1-5 (SEC :PRI) -------- FULL PRIMARY INDUCTANCE (1-5): VOLTAGE = 0.250Vrms FREQUENCY = 10 KHZ 26.0 PRIMARY DC BIAS CURRENT THD < 70dB PRIMARY LEAKAGE INDUCTANCE: VOLTAGE = 0.250Vrms FREQUENCY = 10 KHZ SPEC LIMITS TYP. MAX. 1 : 1.25 29.5 0.0 -------- -------- + 3% 33.0 mHy 60.0 1 9 PRI #1B PRIMARY (LINE SIDE) mA 2 4 SEC #1A 8 SECONDARY (CHIP SIDE) SEC #1B -------- 95 150 PRI #1A µHy 7 5 DCR: FULL PRIMARY (1-5) SECONDARY (9-7) --------------- --------------- 8.0 12.0 Ohms Ohms LONGITUDINAL BALANCE OF PRI. 1KHz TO 4 KHz 4KHz TO 160 KHz -60 -58 -80 -70 --------------- dB dB Cw/w @ 10KHz (FULL PRI TO SEC) -------- 76 150.0 pF -------- -------- Vac HI-POT: 50/60Hz PRIMARY TO SECONDARY WHITE DOT DENOTES PIN #1 UNITS 3000 NOTE: 1) PRIMARY CENTER TAP IS FORMED BY CONNECTING PIN#2 TO PIN#4 NOTE1: REINFORCED INSULATION SYSTEM, UL1950, IEC950, CSA-950: A) ALL MATERIALS MEET "UL", "CSA" & "IEC" REQUIREMENTS B) 130 OC REINFORCED INSULATION SYSTEM. C)MARGIN WOUND FOR > 2.5mm CREEPAGE.CLEARANCE D)VARNISH FINISHED ASSEMBLY. FIGURE 2: PHYSICAL DIMENSIONS IN INCHES, (mm) PIN #1 NOTCH 1 3 4 P PM-IU07 M YYWW 2 10 9 8 7 5 6 .940 (23.88) MAX 1.100 (27.94) MAX .725 (18.42) MAX .020 (.51) .800 (20.32) .210 (5.33) TYP .150 (3.81) .300 (7.62) REV. 08/14/98 .045 (1.14) DESCRIPTION OF CHANGES 2.50MM CREEPAGE TS2318, 10-PIN P Premier M Magnetics Inc. "INNOVATORS IN MAGNETICS TECHNOLOGY" UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES DIMENSIONAL TOLERANCES ARE: DECIMALS ANGLES .XX + .05 + 0 O 30' .XXX + .010 DO NOT SCALE DRAWING ISDN U TRANSFOMER CONTROL DRAWING PREMIER P/N: PM-IU07 REVISION: 08/14/98 DRAWN BY: TOM O'NEIL REF: 2318TS SCALE: NONE SHEET: 1 OF 3