DESCRIPTION AND APPLICATIONS
The military data bus specification, MIL-STD-1553, has brought about
the need for versatile pulse transformers that meet all the electrical
requirements of Manchester II serial bi-phase data transmission. The
MMT-3000 series of transformers provide the turns ratio configurations,
component isolation, and common mode rejection ratio characteristics
necessary for MIL-STD-1553A and B compliance.
The step-up and step-down ratios that are available with the MMT-3000
series complement DDC's entire MIL-STD-1553 product line. These
transformers are low-profile and provide a 70% reduction in board space
compared to surface mount QPL pulse transformers. They are encapsu-
lated and meet the performance requirements of MIL-PRF-21038.
Sinusoidal or trapezoidal waveforms are accurately processed, making
the MMT-3000 series of transformers an excellent choice for any MIL-
STD-1553A or B application.
MMT-3000 SERIES
FEATURES
•
Miniature package requires less
board space
•
Surface Mount
-
Tape and Reel Available
•
For Use with MIL-STD-1553A and B,
MacAir A-5690, A-5232, and A-4905
•
Withstands conventional
IR/Convection Reflow Process
•
Low Profile
•
-55°C to +130°C Operating
Temperature Range
•
Built and Tested to MIL-PRF-21038
and MIL-STD-202
N : 1
E
OUT
E = 10 V rms at 1 MHz
IN
Calc: CMR = 20 log (see note)
E
IN
E
OUT
E
IN
1 : N
E
OUT
(SEE NOTE)
E = 250 kHz square wave, 27.0 volts peak-to-peak with
IN
a rise and fall time no greater than 100 ns.
Calc : Droop = x 100%. (see figure 1 for E )
D
E
D
E
OUT
E
IN
(SEE NOTE)
360 Ω
E
OUT
E
D
E
D
E
OUT
t
r
10%
90%
% DROOP = x 100%
OVERSHOOT AND
RINGING ±1 V MAX
E
D
E
OUT
t
f
FIGURE 1. WAVEFORM INTEGRITY
FIGURE 2. CIRCUIT FOR COMMON MODE REJECTION
FIGURE 3. CIRCUIT FOR WAVEFORM INTEGRITY
Note: Input to be applied and output to be measured for all dash numbers are as shown. N represents highest turns winding in each test.
MINIATURE MIL-TEMP
0.260" MAXIMUM HEIGHT
MIL-STD-1553
SMT TRANSFORMERS
© 2000 Data Device Corporation
A Subsidiary of Data Device Corporation
40 Orville Drive, Bohemia, NY 11716-2529
Phone: (631) 244-7393; Fax: (631) 244-8893
Web site: www.bttc-beta.com
2
BETA TRANSFORMER TECHNOLOGY CORP • 40 ORVILLE DRIVE • BOHEMIA NY 11716-2529 • 631-244-7393 • FAX 631-244-8893
TABLE 1. GENERAL SPECIFICATIONS
PARAMETER
Case — — Flame Resistant, Diallyl Phthalate
Terminals — — C11000 ETP Copper, Sn60 Plated over nickel underplating
Weight Oz (gm) 0.0530(1.5) max.
Terminal Strength lbs 22 pounds applied force, Method 211, MIL-STD-202, Test Condition A
Dielectric Withstanding Voltage Vrms 100 Method 301, MIL-STD-202
Life (expectancy “X”) Hrs 10,000 min. In accordance with MIL-PRF-21038
Insulation Resistance MΩ1,000 min. At 250 Vdc using Method 302, Test Condition B, MIL-STD-202
Pulse Width (Output Pulse) µs 2Tested using FIGURE 3 with resulting FIGURE 1 waveform.
Overshoot V± 1 max. Tested using FIGURE 3 with resulting FIGURE 1 waveform.
Rise Time (of Output Pulse) ns —Tested using FIGURE 3 with resulting FIGURE 1 waveform.
See respective ELECTRICAL CHARACTERISTICS TABLE.
Common Mode Rejection dB 45 Tested using FIGURE 2.
Operating Temperature Range °C -55° to +130°
Droop %≤20 Tested using FIGURE 3 with resulting FIGURE 1 waveform.
DC Resistance Ω—See respective ELECTRICAL CHARACTERISTICS TABLE.
Input Impedance Ω—See respective ELECTRICAL CHARACTERISTICS TABLE.
UNIT VALUE REMARKS
CONFIGURATION
TOP VIEW
1
2
3
8
6
4
7
5
0.40 (10.16)
0.075 (1.905) TYP
4 PLACES
0.150 (3.81)
0.40 (10.16)
MAX
0.260 (6.604)
MAX
0.010 (.254)
SIDE VIEW
NOTES:
(1) Dimensions are in inches (mm.)
(2) Tolerance (unless specified otherwise):
0.52 (13.21)
0.44 (11.18)
REF
MAX
0.150 (3.81)
.xx is ± 0.010 (.254)
.xxx is ± .005 (.127)
0.020 (0.508)
8 PLACES
8 PLACES
MMT-3012
TABLE 2. ELECTRICAL CHARACTERISTICS
(1-3) 2.7
(4-8) 2.2
4-81-31.41:1 ±3%MMT-3015
(1-3) 2.4
(4-8) 1.5
4-81-31.25:1 ±3%
(4-8)
3,000
(1-3) 1.5
(4-8) 3.5
4-8
1-31:2.50 ±3%MMT-3005
75KHZ TO 249KHZ
DC RESISTANCE ΩΩ
(MAX)
SECONDARYPRIMARYTURNS RATIOBETA P/N
(1-3) 1.5
(5-7) 2.5
5-71-31:1.79 ±3%MMT-3205
(1-3) 2.4
(5-7) 1.5
5-71-3 1.66:1 ±3%MMT-3212
(1-3) 2.6
(5-7) 1.3
5-71-3
2.00:1 ±3%
MMT-3215
OUTPUT RISE
TIME (MAX)
250 ns
IMPEDANCE ΩΩ(MIN)
250KHZ TO 1 MHZ
(4-8)
4,000
(1-3)
3,000
150 ns (1-3)
4,000
(1-3)
5,000
150 ns (1-3)
7,200
(5-7)
3,000
150 ns (5-7)
4,000
(1-3)
3,000
150 ns (1-3)
4,000
(1-3)
5,000
150 ns (1-3)
7,200
Note:
These transformers have been classified as Level 5A IPC-9503 and must be processed accordingly. To ensure product integrity and maintain the product warranty, these
transformers require a 24 hour bake at +125°C prior to any solder reflow processing. Dried transformers must be reflowed within 24 hours. J-STD-033 preconditioning (dry-
pack) can be provided by Beta upon request. Reflow process must not cause the peak body temperature of the device to exceed 225°C and must not expose the device to
temperatures above 183°C for more than 90 seconds.
8 (NC)
7
6 (NC)
1
2
CIRCUIT DIAGRAM FOR -3205, -3212, -3215
8
7 (NC)
5 (NC)
4
1
2
3
5
CIRCUIT DIAGRAM FOR -3005, -3012, -3015
6 (NC)
34 (NC)
Terminals (Alternate) — — C11000 ETP Copper, Sn63 Dipped, over matte Sn100 plating,
over nickel underplating
BETA TRANSFORMER TECHNOLOGY CORP • 40 ORVILLE DRIVE • BOHEMIA NY 11716-2529 • 631-244-7393 • FAX 631-244-8893
3
0.012 ± .002
(0.30 ± .05)
R 0.012 MAX
(R 0.30 MAX)
0.28
(7.1)
0.787
(20.00)
0.453
(11.50)
0.54
(13.7)
0.94 ± .012
(24.0 ± .3)
0.069
(1.75)
∅ 0.059 MIN
(∅ 1.50 MIN)
0.46
(11.7)
∅ 0.059 +.004/-.000
(∅ 1.5 +.1/-.0)
R 0.02 TYP
(R 0.5 TYP)
0.42
(10.7)
0.58
(14.7)
DMENSIONS ARE IN
INCHES (MM)
TOLERANCES
.XX (.X) = ± .008 (0.20)
.XXX (.XX) = ± .004 (0.10)
TAPE AND REEL MECHANICAL OUTLINE
PARTS PACKAGED ON 13” DIAMETER REEL,
400 PARTS PER FULL REEL.
0.079
(2.00)
0.157
(4.00)
4
J-04/11-0
The information in this data sheet is believed to be accurate; however, no responsibility is
assumed by Beta Transformer Technology Corporation for its use, and no license
or rights are granted by implication or otherwise in connection therewith.
Specifications are subject to change without notice.
Visit our Web site at www.bttc-beta.com for the latest information.
A Subsidiary of Data Device Corporation
40 Orville Drive, Bohemia, NY 11716-2529
Phone: (631) 244-7393; Fax: (631) 244-8893
Web site: www.bttc-beta.com
PRINTED IN THE U.S.A.
