through the board mil-prf-21038/27 level m interface transformers n qualified for use in qpl mil-std-1553 applications n dual ratio in a single package n designed, built, and tested to mil-prf-21038 level m* n two packages available: package a without standoffs, package g with standoffs n built in iso 9002 facility applicable specifications n mil-std-1553b n mil-std-202 n mil-i-45208 n mil-t-10727 n mil-prf-21038/27* n 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........................................................... -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. two pearl buck court l bristol, pa 19007-6812 l tel 215-781-6400 l fax 215-781-6403 l www.pulsespecialty.com
characteristics 8l~tb~c military military designation designation number number t echnitrol t echnitrol part no. part no. package package height height (in.) (in.) max max terminals terminals rat io rat io (( + + 3%) 3%) rdc rdc (ohm s) (ohm s) max max impedance impedance (ohms) (ohms) min 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 military military designation designation number number t echnitrol t echnitrol part no. part no. package package height height (in.) (in.) max max terminals terminals rat io rat io (( + + 3%) 3%) rdc rdc (ohm s) (ohm s) max max impedance impedance (ohms) (ohms) min min m21038/27-01 q1553-1 a .250 1-3:4-8 1ct:1ct 1-3 3.0 (1-3) *designed for transceivers utilizing a single supply voltage (+5v). schematics and dimensions two pearl buck court l bristol, pa 19007-6812 l tel 215-781-6400 l fax 215-781-6403 l www.pulsespecialty.com package a package g
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