two pearl buck court l bristol, pa 19007-6812 l tel 215-781-6400 l fax 215-781-6403 l www.pulsespecialty.com qpl transformers 8 dual ratio surface mount qpl pulse transformers 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....................... -55 o c to 130 o c 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. n qualified for use in qpl mil-std-1553 applications n dual ratio in a single package, see schematic n designed, built, and tested to mil-prf-21038 level c, m, and t* n two packages available: package b has gull-wing leads; package f is flat pack n built in iso 9002 facility applicable specifications n mil-std-1553b n mil-std-202 n mil-prf-21038/27* n mil-t-10727 n iso 9002 note: contact factory for smq1553-9 and fpq1553-9 schematic package b (side view) package f (side view) schematic and dimensions p ulse s pecialty c omponents back to contents
two pearl buck court l bristol, pa 19007-6812 l tel 215-781-6400 l fax 215-781-6403 l www.pulsespecialty.com qpl transformers 9 characteristics line line level level military military designation designation number number technit rol technit rol part no. part no. package package height height (i n.) (i n.) max max terminals terminals rat io rat io (( + + 3%) 3%) rdc rdc (o hms) (o hms) max max impedance impedance (ohms) (ohms) min min 1 c m 21038/27-11c smqc1553-6 b .250 1-3:4-8 1-3:5-7 1ct:1ct 1ct:.707ct 1-3 3.0 1-3 3.0 (1-3) 4,000 2 m m 21038/27-11 smq1553-6 3 t m 21038/27-11t smqt1553-6 4 c m 21038/27-12c smqc1553-7 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 5 m m 21038/27-12 smq1553-7 6 t m 21038/27-12t smqt1553-7 7 c m 21038/27-13c smqc1553-8 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 8 m m 21038/27-13 smq1553-8 9 t m 21038/27-13t smqt1553-8 10 c m 21038 /27-15c smqc1553-10 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 11 m m 21038 /27-15 smq1553-10 12 t m 21038 /27-15t smqt1553-10 13 c m 21038 /27-16c fpqc1553-6 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 14 m m 21038 /27-16 fpq1553-6 15 t m 21038 /27-16t fpqt1553-6 16 c m 21038 /27-17c fpqc1553-7 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 17 m m 21038 /27-17 fpq1553-7 18 t m 21038 /27-17t fpqt1553-7 19 c m 21038 /27-18C fpqc1553-8 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 20 m m 21038 /27-18 fpq1553-8 21 t m 21038 /27-18t fpqt1553-8 22 c m 21038 /27-20c fpqc1553-10 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 23 m m 21038 /27-20 fpq1553-10 24 t m 21038 /27-20t fpqt1553-10 25 c m 21038 /27-27c smqc1553-45* 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 26 m m 21038 /27-27 smq1553-45* 27 t m 21038 /27-27t smqt1553-45* 28 c m 21038 /27-31c fpqc1553-45* 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 29 m m 21038 /27-31 fpq1553-45* 30 t m 21038 /27-31t fpqt553-45* line line level level military military designation designation number number technit rol technit rol part no. part no. package package height height (i n.) (i n.) max max terminals terminals rat io rat io (( + + 3%) 3%) rdc rdc (o hms) (o hms) max max impedance impedance (ohms) (ohms) min min 1 c m 21038/27-11c smqc1553-6 b .250 1-3:4-8 1ct:1ct 1-3 3.0 (1-3) p ulse s pecialty c omponents back to contents n dual ratio n surface mounting *designed for transceivers utilizing a single supply voltage (+5v).
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