Through the board
MIL-PRF-21038/27
Level T Interface Transformers
■qualified for use in QPL MIL-STD-1553 applications
■dual ratio in a single package
■ designed, built, and tested
to MIL-PRF-21038 Level T*
■ two packages available: Package A without
standoffs, Package G with standoffs
■ 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
8l~tb~t
MILITARYMILITARY
DESIGNATIONDESIGNATION
NUMBERNUMBER
TECHNITROLTECHNITROL
PART NO. PART NO. PACKAGEPACKAGE HEIGHTHEIGHT
(in.) (in.)
MAXMAX
TERMINALSTERMINALS RATIORATIO
((++3%)3%) RDCRDC
(ohms) (ohms)
MAXMAX
IMPEDANCEIMPEDANCE
(ohms) (ohms)
MINMIN
M21038/27-01T QT1553-1 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
M21038/27-02T QT1553-2 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
M21038/27-03T QT1553-3 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
M21038/27-04T QT1553-4 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 -10T QT1553-5* 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
M21038/27-21T QT1553-81 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
M21038/27-22T QT1553-82 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
M21038/27-23T QT1553-83 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
M21038/27-24T QT1553-84 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
M21038/27-25T QT1553-85 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
M21038/27-26T QT1553-45* 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
MILITARYMILITARY
DESIGNATIONDESIGNATION
NUMBERNUMBER
TECHNITROLTECHNITROL
PART NO. PART NO. PACKAGEPACKAGE HEIGHTHEIGHT
(in.) (in.)
MAXMAX
TERMINALSTERMINALS RATIORATIO
((++3%)3%) RDCRDC
(ohms) (ohms)
MAXMAX
IMPEDANCEIMPEDANCE
(ohms) (ohms)
MINMIN
M21038/27-01T QT1553-1 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
●
BRISTOL, PA 19007-6812
●
TEL 215-781-6400
●
FAX 215-781-6403
●
www.pulsespecialty.com
Package A Package G
