back to "Contents" PULSE SPECIALTY COMPONENTS Single ratio through-the-board QPL pulse transformers n qualified for use in QPL MIL-STD-1553 applications n single ratio packages, see schematics n designed, built, and tested to MIL-PRF-21038 Levels C, M, and T* n package C is 4-lead; package D is 6-lead (center tap) n built in ISO 9002 facility APPLICABLE SPECIFICATIONS n MIL-STD-1553B n MIL-STD-202 n MIL-T-10727 n MIL-PRF-21038/27* n ISO 9002 SUMMARY PERFORMANCE SPECIFICATIONS Impedance.................................................................................. see table, next page 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: n Level C - for high reliability commercial/industrial applications; n Level M - for general purpose military applications; n Level T - for high reliability critical military applications. TWO PEARL BUCK COURT l BRISTOL, PA 19007-6812 l TEL 215-781-6400 l QPL Transformers -- 4 FAX 215-781-6403 l www.pulsespecialty.com back to "Contents" PULSE SPECIALTY COMPONENTS CHARACTERISTICS n single LINE LEVEL MILITARY DESIGNATION NUMBER TECHNITROL TECHNITROL PART NO. PACKA GE HEIGHT (in.) MAX TERMINALS TERMINALS 1 C M 21038/27-05C QC 1553-20 C .250 1-2:4-3 2 M M 21038/27-05 3 T M 21038/27-05T QT1553-20 4 C M 21038/27-06C QC 1553-21 D .250 5 M M 21038/27-06 6 T M 21038/27-06T QT1553-21 7 C M 21038/27-07C QC 1553-22 D 8 M M 21038/27-07 9 T M 21038/27-07T QT1553-22 10 C M 21038/27-08C QC 1553-23 11 M M 21038/27-08 12 T M 21038/27-08T QT1553-23 13 C M 21038/27-09C QC 1553-24 14 M M 21038/27-09 15 T M 21038/27-09T QT1553-24 16 C M 21038/27-28C QC 1553-25* 17 M M 21038/27-28 Q1553-25* 18 T M 21038/27-28T QT1553-25* 19 C M 21038/27-29C QC 1553-51* 20 M M 21038/27-29 21 T M 21038/27-29T QT1553-51* 22 C M 21038/27-30C QC 1553-52* 23 M M 21038/27-30 Q1553-52* 24 T M 21038/27-30T QT1553-52* RATIO ((++3%) 3%) ratio n through the board RDC (ohms) (ohms) MAX IMPEDA NCE (ohm s) 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 D .250 1-5:6-2 1CT:2CT 1-5 1.3 6-2 2.6 (6-2) 3,000 D .250 1-5:6-2 1CT:1.5CT 1-3 0.90 6-2 2.5 (6-2) 3,000 D .250 1-5:6-2 1CT:1.79CT 1.5 0.90 6-2 2.5 (6-2) 3,000 D .250 1-5:6-2 1CT:2.5CT 1-5 1.0 6-2 2.8 (6-2) 3,000 Q1553-20 Q1553-21 Q1553-22 Q1553-23 Q1553-24 Q1553-51* *Designed for transceivers utilizing a single supply voltage (+5V). Package C Package D Notes: 1. All dimensions are in inches. 2. Tolerances: .xx = +.008 3. All specifications and dimensions are subject to change without notice. TWO PEARL BUCK COURT l BRISTOL, PA 19007-6812 l TEL 215-781-6400 l QPL Transformers -- 5 FAX 215-781-6403 l www.pulsespecialty.com