Surface mount MIL-PRF-21038/27 Level T Interface Transformers qualified for use in QPL MIL-STD-1553 applications dual ratio in a single package designed, built, and tested to MIL-PRF-21038 Level T* two packages available: Package B has gull-wing leads; Package F is flat pack built in ISO 9002 facility APPLICABLE SPECIFICATIONS MIL-STD-1553B MIL-STD-202 MIL-I-45208 MIL-T-10727 MIL-PRF-21038/27* ISO 9002 SUMMARY PERFORMANCE SPECIFICATIONS Impedance................................................................................................... see table Droop.............................................................................................................. < 20% Overshoot.................................................................................................. + 1V max Common mode rejection (CMR)................................................................. > 45 dB Frequency range (no load)............................................................. 75 kHz to 1MHz Operating temperature range........................................................... -55oC to 130oC Weight....................................................................................................... < 5 grams Insulation resistance (min)........................................... 10K megohms @ 250 Vdc Dielectric withstanding voltage................................................................ 100 Vrms *MIL-PRF-21038E (8 July 1998) supersedes MIL-T-21038D (11 May 1979) and establishes three product levels for low power pulse transformers: Level C - for high reliability commercial/industrial applications; Level M - for general purpose military applications; Level T - for high reliability critical military applications. TWO PEARL BUCK COURT BRISTOL, PA 19007-6812 TEL 215-781-6400 FAX 215-781-6403 www.pulsespecialty.com CHARACTERISTICS MILITARY DESIGNATION NUMBER TECHNITROL TECHNITROL PART NO. PACKAGE HEIGHT (in.) MAX TERMINA LS RATIO ((++3%) RDC (ohm s) MAX IMPEDANCE (ohms) MIN M21038/27-11T SM QT1553 -6 B .250 1-3:4-8 1-3:5-7 1CT :1CT 1CT :.707CT 1-3 3.0 4-8 3.0 (1-3) 4,000 M21038/27-12T SM QT1553 -7 B .250 1-3:4-8 1-3:5-7 1.4CT :1CT 2CT :1CT 1-3 3.5 4-8 3.0 (1-3) 7,200 M21038/27-13T SM QT1553 -8 B .250 1-3:4-8 1-3:5-7 1.25CT:1CT 1.66CT:1CT 1-3 3.2 4-8 3.0 (1-3) 4,000 M21038/27-14T SM QT1553 -9 B .250 1-3:4-8 1-3:5-7 1CT :2.3CT 1CT :3.2CT 1-3 1.2 5-7 3.0 (5-7) 3,000 M21038/27-15T SM QT1553 -10* B .250 1-3:4-8 1-3:5-7 1CT :2.12CT 1CT :1.5CT 1-3 1.0 4-8 3.5 (4-8) 4,000 M21038/27-16T FPQT1553 -6 F .250 1-3:4-8 1-3:5-7 1CT :1CT 1CT :.707CT 1-3 3.0 4-8 3.0 (1-3) 4,000 M21038/27-17T FPQT1553 -7 F .250 1-3:4-8 1-3:5-7 1.4CT :1CT 2CT :1CT 1-3 3.5 4-8 3.0 (1-3) 7,200 M21038/27-18T FPQT1553 -8 F .250 1-3:4-8 1-3:5-7 1.25CT:1CT 1.66CT:1CT 1-3 3.2 4-8 3.0 (1-3) 4,000 M21038/27-19T FPQT1553 -9 F .250 1-3:4-8 1-3:5-7 1CT :2.3CT 1CT :3.2CT 1-3 1.2 5-7 3.0 (5-7) 3,000 M21038/27-20T FPQT1553 -10* F .250 1-3:4-8 1-3:5-7 1CT :2.12CT 1CT :1.5CT 1-3 1.0 4-8 3.5 (4-8) 4,000 M21038/27-27T SM QT1553 -45* B .250 1-3:4-8 1-3:5-7 1CT :2.50CT 1CT :1.79CT 1-3 1.0 4-8 3.5 (4-8) 4,000 M21038/27-31T FPQT1553 -45* F .250 1-3:4-8 1-3:5-7 1CT :2.50CT 1CT :1.79CT 1-3 1.0 4-8 3.5 (4-8) 4,000 *Designed for transceivers utilizing a single supply voltage (+5V). SCHEMATICS AND DIMENSIONS -- Packages B and F Note: Contact factory for SMQ 1553-9 and FPQ 1553-9 schematic Package "B" (side view) Package "F" (side view) 8l~sm~t TWO PEARL BUCK COURT BRISTOL, PA 19007-6812 TEL 215-781-6400 FAX 215-781-6403 www.pulsespecialty.com