Through the board MIL-PRF-21038/27 Level M 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 M* two packages available: Package A without standoffs, Package G with standoffs 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 NUMBER TECHNITROL TECHNITROL PART NO. PACK AGE HEIGHT (in.) MAX TERMINALS RATIO ( +3%) RDC RDC (ohm s) MAX IMPEDANCE (ohms) MIN M21038/27-01 Q1553-1 A .250 1-3:4-8 1-3:5-7 1CT :1CT 1CT :.707CT 1-3 3.0 4-8 3.0 (1-3) 4000 M21038/27-02 Q1553-2 A .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 M21038/27-03 Q1553-3 A .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) 4000 M21038/27-04 Q1553-4 A .300 1-3:4-8 1-3:5-7 1CT :2.3CT 1CT :3.2CT 1-3 1.2 5-7 3.0 (5-7) 3000 M21038/27-10 Q1553-5* A .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) 3,000 M21038/27-21 Q1553-81 G .275 1-3:4-8 1-3:5-7 1CT :1CT 1CT :.707CT 1-3 3.0 4-8 3.0 (1-3) 4,000 M21038/27-22 Q1553-82 G .275 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 M21038/27-23 Q1553-83 G .275 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 M21038/27-24 Q1553-84 G .275 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 M21038/27-25 Q1553-85 G .275 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 M21038/27-26 Q1553-45* A .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 Package A Package G 8l~tb~c TWO PEARL BUCK COURT BRISTOL, PA 19007-6812 TEL 215-781-6400 FAX 215-781-6403 www.pulsespecialty.com