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
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BRISTOL, PA 19007-6812
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TEL 215-781-6400
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FAX 215-781-6403
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www.pulsespecialty.com
MILITARYMILITARY
DESIGNATIONDESIGNATION
NUMBERNUMBER
TECHNITROLTECHNITROL
PART NO.PART NO. PACKAGEPACKAGE HEIGHTHEIGHT
(in.)(in.)
MAXMAX
TERMINALSTERMINALS RATIORATIO
( (++3%)3%) RDCRDC
(ohms) (ohms)
MAXMAX
IMPEDANCEIMPEDANCE
(ohm s) (ohm s)
MINMIN
M21038/27-05T QT1553-20 C.250 1-2:4-3 1:1.41 1-2 2.2
4-3 2.7 (4-3)
3,000
M21038/27-06T QT1553-21 D.250 1-5:6-2 1CT:1CT 1-5 2.5
6-2 2.8 (6-2)
3,000
M21038/27-07T QT1553-22 D.250 1-5:6-2 1CT:1.41CT 1-5 2.2
6-2 2.7 (6-2)
3,000
M21038/27-08T QT1553-23 D.250 1-5:6-2 1CT:1.66CT 1-5 1.5
6-2 2.4 (6-2)
3,000
M21038/27-09T QT1553-24 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
MILITARYMILITARY
DESIGNATIONDESIGNATION
NUMBERNUMBER
TECHNITROLTECHNITROL
PART NO.PART NO. PACKAGEPACKAGE HEIGHTHEIGHT
(in.)(in.)
MAXMAX
TERMINALSTERMINALS RATIORATIO
( (++3%)3%) RDCRDC
(ohms) (ohms)
MAXMAX
IMPEDANCEIMPEDANCE
(ohm s) (ohm s)
MINMIN
M21038/27-05T QT1553-20 C.250 1-2:4-3 1:1.41 1-2 2.2 (4-3)
*Designed for transceivers utilizing a single supply voltage (+5V).
SCHEMATICS AND DIMENSIONS
CHARACTERISTICS
4&6L~TH~T
TWO PEARL BUCK COURT
●
BRISTOL, PA 19007-6812
●
TEL 215-781-6400
●
FAX 215-781-6403
●
www.pulsespecialty.com
Package C Package D
