Through the board MIL-PRF-21038/27 Level T Interface Transformers qualified for use in QPL MIL-STD-1553 applications single ratio packages designed, built, and tested to MIL-PRF-21038 Level T* package C is 4-lead; package D is 6-lead (center tap) 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 PART NO. PACK PACKAGE AGE HEIGHT (in.) (in.) MAX TERMINALS M21038/27-05T QT 1553 -20 C .250 1-2:4-3 M21038/27-06T QT 1553 -21 D .250 M21038/27-07T QT 1553 -22 D M21038/27-08T QT 1553 -23 M21038/27-09T RATIO ((++3%) 3%) RDC (ohm s) MAX IMPEDANCE IMPEDANCE (ohms) MIN MIN 1:1.41 1-2 2.2 4-3 2.7 (4-3) 3,000 1-5:6-2 1CT :1CT 1-5 2.5 6-2 2.8 (6-2) 3,000 .250 1-5:6-2 1CT :1.41CT 1-5 2.2 6-2 2.7 (6-2) 3,000 D .250 1-5:6-2 1CT :1.66CT 1-5 1.5 6-2 2.4 (6-2) 3,000 QT 1553 -24 D .250 1-5:6-2 1CT :2CT 1-5 1.3 6-2 2.6 (6-2) 3,000 M21038/27-28T QT1553-25* D .250 1-5:6-2 1CT :1.5CT 1-3 0.90 6-2 2.5 (6-2) 3,000 M21038/27-29T QT1553-51* D .250 1-5:6-2 1CT :1.79CT 1.5 0.90 6-2 2.5 (6-2) 3,000 M21038/27-30T QT1553-52* D .250 1-5:6-2 1CT :2.5CT 1-5 1.0 6-2 2.8 (6-2) 3,000 *Designed for transceivers utilizing a single supply voltage (+5V). SCHEMATICS AND DIMENSIONS Package C Package D 4&6L~TH~T TWO PEARL BUCK COURT BRISTOL, PA 19007-6812 TEL 215-781-6400 FAX 215-781-6403 www.pulsespecialty.com