1553_Trans Rev. U 12/18
1
MIL-STD-1553 / MIL-PRF-21038
DATABUS INTERFACE TRANSFORMERS
ADD "+" ON P/N FOR RoHS COMPLIANCE
Holt Integrated Circuits
MIL-STD-1553 Transformers
1553_Trans Rev. U 12/18
2
MIL-STD-1553 / MIL-PRF-21038
DATABUS INTERFACE TRANSFORMERS
ADD "+" ON P/N FOR RoHS COMPLIANCE
This page intentionally blank
1553_Trans Rev. U 12/18
3
MIL-STD-1553 / MIL-PRF-21038
DATABUS INTERFACE TRANSFORMERS
ADD "+" ON P/N FOR RoHS COMPLIANCE
Isolation Transformers – Surface Mount
Dual Core, Single Ratio
Part Number
Total
Pins
Length
inch.
(mm)
Width
inch.
(mm)
Height
inch.
(mm)
1st Core
Terminals
2nd Core
Terminals
Schematic
/
Package
PM-DB2750
16
0.93
(23.622)
0.575
(14.605)
0.185
(4.699)
1-3:15-14
6-8:11-10
13/AB
PM-DB2751
16
0.93
(23.622)
0.575
(14.605)
0.185
(4.699)
1-3:16-13
6-8:12-9
14/AB
PM-DB2752
16
0.93
(23.622)
0.575
(14.605)
0.185
(4.699)
1-3:15-14
6-8:11-10
13/AB
PM-DB2753
16
0.93
(23.622)
0.575
(14.605)
0.185
(4.699)
1-3:16-13
6-8:12-9
14/AB
PM-DB2754
16
0.93
(23.622)
0.575
(14.605)
0.185
(4.699)
1-3:15-14
6-8:11-10
13/AB
PM-DB2756
16
0.93
(23.622)
0.575
(14.605)
0.185
(4.699)
1-3:15-14
6-8:11-10
13/AB
PM-DB2761
10
0.4
(10.16)
0.4
(10.16)
0.32
(8.128)
1-2:10-9
4-5:7-6
12/AA
PM-DB2762
10
0.4
(10.16)
0.4
(10.16)
0.32
(8.128)
1-2:10-9
4-5:7-6
12/AA
PM-DB2763
10
0.4
(10.16)
0.4
(10.16)
0.32
(8.128)
1-2:10-9
4-5:7-6
12/AA
PM-DB2765
10
0.4
(10.16)
0.4
(10.16)
0.32
(8.128)
1-2:10-9
4-5:7-6
12/AA
PM-DB2766
10
0.4
(10.16)
0.4
(10.16)
0.32
(8.128)
1-2:10-9
4-5:7-6
12/AA
PM-DB2767
10
0.4
(10.16)
0.4
(10.16)
0.32
(8.128)
1-2:10-9
4-5:7-6
12/AA
PM-DB2768
10
0.4
(10.16)
0.4
(10.16)
0.32
(8.128)
1-2:10-9
4-5:7-6
12/AA
PM-DB2769
10
0.4
(10.16)
0.4
(10.16)
0.32
(8.128)
1-2:10-9
4-5:7-6
12/AA
PM-DB2770
10
0.4
(10.16)
0.4
(10.16)
0.32
(8.128)
1-2:10-9
4-5:7-6
12/AA
PM-DB2771
10
0.4
(10.16)
0.4
(10.16)
0.32
(8.128)
1-2:10-9
4-5:7-6
12/AA
1553_Trans Rev. U 12/18
4
MIL-STD-1553 / MIL-PRF-21038
DATABUS INTERFACE TRANSFORMERS
ADD "+" ON P/N FOR RoHS COMPLIANCE
Dual Core, Dual Ratio
Part Number
Total
Pins
Length
inch.
(mm)
Width
inch.
(mm)
Height
inch.
(mm)
Core(s)
Ratio(s)
Ratio (±3%)
1st Core
Terminals
2nd Core
Terminals
Schematic/
Package
PM-DB2785S
16
0.93
(23.622)
0.63
(16.002)
0.155
(3.937)
1:2.5
1:1.79
1-3:16-13
1-3:15-14
5-7:12-9
5-7:11-10
6/S
PM-DB2741S
16
0.93
(23.622)
0.63
(16.002)
0.155
(3.937)
1:1
1:0.707
1-3:16-13
1-3:15-14
5-7:12-9
5-7:11-10
6/S
PM-DB2743S
16
0.93
(23.622)
0.63
(16.002)
0.155
(3.937)
1.25:1
1.66:1
1-3:16-13
1-3:15-14
5-7:12-9
5-7:11-10
6/S
PM-DB2744S
16
0.93
(23.622)
0.63
(16.002)
0.155
(3.937)
1:2.12
1:1.5
1-3:16-13
1-3:15-14
5-7:12-9
5-7:11-10
6/S
PM-DB2745S
16
0.93
(23.622)
0.63
(16.002)
0.155
(3.937)
1:2.5
1:1.79
1-3:16-13
1-3:15-14
5-7:12-9
5-7:11-10
6/S
PM-DB2775
16
0.675
(17.145)
0.4
(10.16)
0.185
(4.699)
1:3.75
1:2.70
1-3:16-13
1-3:15-14
6-8:12-9
6-8:11-10
15/AC
PM-DB2776
16
0.675
(17.145)
0.4
(10.16)
0.185
(4.699)
1:2.5
1:1.79
1-3:16-13
1-3:15-14
6-8:12-9
6-8:11-10
15/AC
PM-DB2777
16
0.675
(17.145)
0.4
(10.16)
0.185
(4.699)
1.25:1
1.66:1
1-3:16-13
1-3:15-14
6-8:12-9
6-8:11-10
15/AC
PM-DB2779
16
0.675
(17.145)
0.4
(10.16)
0.185
(4.699)
1:2.65
1:2.07
1-3:16-13
1-3:15-14
6-8:12-9
6-8:11-10
15/AC
PM-DB27438
16
0.625
(15.87)
0.625
(15.87)
0.295
(7.493)
1:2.50
1:1.79
1-3:4-8
1-3:5-7
11-13:14-18
11-13:15-17
7/AG
Single Core, Single Ratio
Part Number
Total
Pins
Length
inch.
(mm)
Width
inch.
(mm)
Height
inch.
(mm)
Core(s)
Ratio(s)
Ratio (±3%)
1st Core
Terminals
2nd Core
Terminals
Schematic/
Package
PM-DB2790S
8
0.4
(10.16)
0.4
(10.16)
0.185
(4.699)
1:3.75
1-3:4-8
---
9/V
PM-DB2791S
8
0.4
(10.16)
0.4
(10.16)
0.185
(4.699)
1:2.5
1-3:4-8
---
9/V
PM-DB2792S
8
0.4
(10.16)
0.4
(10.16)
0.185
(4.699)
1:2.7
1-3:5-7
---
10/V
PM-DB2793S
8
0.4
(10.16)
0.4
(10.16)
0.185
(4.699)
1:2.5
1-3:5-7
---
10/V
PM-DB2794S
8
0.4
(10.16)
0.4
(10.16)
0.185
(4.699)
1:2.65
1-3:5-7
---
10/V
PM-DB2795S
8
0.4
(10.16)
0.4
(10.16)
0.185
(4.699)
1:1.79
1-3:5-7
---
10/V
1553_Trans Rev. U 12/18
5
MIL-STD-1553 / MIL-PRF-21038
DATABUS INTERFACE TRANSFORMERS
ADD "+" ON P/N FOR RoHS COMPLIANCE
Single Core, Dual Ratio
Part Number
Total
Pins
Length
inch.
(mm)
Width
inch.
(mm)
Height
inch.
(mm)
Core(s)
Ratio(s)
Ratio (±3%)
1st Core
Terminals
2nd Core
Terminals
Schematic
/ Package
PM-DB2711
8
0.625
(15.875)
0.625
(15.875)
0.254
(6.4516)
1:1
1:0.707
1-3:4-8
1-3:5-7
---
1/D
PM-DB2713
8
0.625
(15.875)
0.625
(15.875)
0.254
(6.4516)
1.25:1
1.66:1
1-3:4-8
1-3:5-7
---
1/D
PM-DB2714
8
0.625
(15.875)
0.625
(15.875)
0.254
(6.4516)
2.3:1
3.2:1
4-8:1-3
5-7:1-3
---
4/D
PM-DB2715
8
0.625
(15.875)
0.625
(15.875)
0.254
(6.4516)
1:2.12
1:1.5
1-3:4-8
1-3:5-7
---
1/D
PM-DB2727
8
0.625
(15.875)
0.625
(15.875)
0.254
(6.4516)
1:2.5
1:1.79
1-3:4-8
1-3:5-7
---
1/D
PM-DB2798S
8
0.4
(10.16)
0.4
(10.16)
0.185
(4.699)
1:2.5
1:1.79
1-3:4-8
1-3:5-7
---
11/V
PM-DB27501S
8
0.4
(10.16)
0.4
(10.16)
0.185
(4.699)
1:2.65
1:2.07
1-3:4-8
1-3:4-6
---
17/AE
PM-DB27503S
8
0.4
(10.16)
0.4
(10.16)
0.185
(4.699)
1:2.5
1:1.79
1-3:4-8
1-3:4-6
---
17/AE
PM-DB2741L
8
0.63
(16.002)
0.63
(16.002)
0.155
(3.937)
1:1
1:0.707
1-3:4-8
1-3:5-7
---
1/L
PM-DB2743L
8
0.63
(16.002)
0.63
(16.002)
0.155
(3.937)
1.25:1
1.66:1
1-3:4-8
1-3:5-7
---
1/L
PM-DB2744L
8
0.63
(16.002)
0.63
(16.002)
0.155
(3.937)
1:2.12
1:1.5
1-3:4-8
1-3:5-7
---
1/L
PM-DB2745L
8
0.63
(16.002)
0.63
(16.002)
0.155
(3.937)
1:2.5
1:1.79
1-3:4-8
1-3:5-7
---
1/L
1553_Trans Rev. U 12/18
6
MIL-STD-1553 / MIL-PRF-21038
DATABUS INTERFACE TRANSFORMERS
ADD "+" ON P/N FOR RoHS COMPLIANCE
Isolation Transformers – Through Hole
Dual Core, Dual Ratio
Part Number
Total
Pins
Length
inch.
(mm)
Width
inch.
(mm)
Height
inch.
(mm)
Core(s)
Ratio(s)
Ratio (±3%)
1st Core
Terminals
2nd Core
Terminals
Schematic
/ Package
PM-DB2741D
16
0.93
(23.622)
0.63
(16.002)
0.155
(3.937)
1:1
1:0.707
1-3:16-13
1-3:15-14
5-7:12-9
5-7:11-10
6/R
PM-DB2743D
16
0.93
(23.622)
0.63
(16.002)
0.155
(3.937)
1.25:1
1.66:1
1-3:16-13
1-3:15-14
5-7:12-9
5-7:11-10
6/R
PM-DB2744D
16
0.93
(23.622)
0.63
(16.002)
0.155
(3.937)
1:2.12
1:1.5
1-3:16-13
1-3:15-14
5-7:12-9
5-7:11-10
6/R
PM-DB2745D
16
0.93
(23.622)
0.63
(16.002)
0.155
(3.937)
1:2.5
1:1.79
1-3:16-13
1-3:15-14
5-7:12-9
5-7:11-10
6/R
PM-DB27401
18
0.625
(15.875)
0.625
(15.875)
0.25
(6.35)
2:5
4:7
1-3:4-8
1-3:5-7
11-13:14-18
11-13:15-17
7/H
PM-DB27402
18
0.625
(15.875)
0.625
(15.875)
0.25
(6.35)
1:0.83
1:0.6
1-3:4-8
1-3:5-7
11-13:14-18
11-13:15-17
7/H
PM-DB27404
18
0.625
(15.875)
0.625
(15.875)
0.25
(6.35)
1:1
1:0.707
1-3:4-8
1-3:5-7
11-13:14-18
11-13:15-17
7/H
PM-DB27405
18
0.625
(15.875)
0.625
(15.875)
0.25
(6.35)
1.25:1
1.66:1
1-3:4-8
1-3:5-7
11-13:14-18
11-13:15-17
7/H
PM-DB27406
18
0.625
(15.875)
0.625
(15.875)
0.25
(6.35)
2.3:1
3.2:1
4-8:1-3
5-7:1-3
14-18:11-13
15-17:11-13
8/H
PM-DB27407
18
0.625
(15.875)
0.625
(15.875)
0.25
(6.35)
2.12:1
1.5:1
4-8:1-3
5-7:1-3
14-18:11-13
15-17:11-13
7/H
PM-DB27408
18
0.625
(15.875)
0.625
(15.875)
0.25
(6.35)
1:2.5
1:1.79
1-3:4-8
1-3:5-7
11-13:14-18
11-13:15-17
7/H
PM-DB27421
18
0.625
(15.875)
0.625
(15.875)
0.28
(7.112)
2:5
4:7
1-3:4-8
1-3:5-7
11-13:14-18
11-13:15-17
7/H
PM-DB27422
18
0.625
(15.875)
0.625
(15.875)
0.28
(7.112)
1:0.83
1:0.6
1-3:4-8
1-3:5-7
11-13:14-18
11-13:15-17
7/H
PM-DB27424
18
0.625
(15.875)
0.625
(15.875)
0.28
(7.112)
1:1
1:0.707
1-3:4-8
1-3:5-7
11-13:14-18
11-13:15-17
7/H
PM-DB27425
18
0.625
(15.875)
0.625
(15.875)
0.28
(7.112)
1.25:1
1.66:1
1-3:4-8
1-3:5-7
11-13:14-18
11-13:15-17
7/H
PM-DB27426
18
0.625
(15.875)
0.625
(15.875)
0.28
(7.112)
2.3:1
3.2:1
4-8:1-3
5-7:1-3
14-18:11-13
15-17:11-13
8/H
PM-DB27427
18
0.625
(15.875)
0.625
(15.875)
0.28
(7.112)
2.12:1
1.5:1
4-8:1-3
5-7:1-3
14-18:11-13
15-17:11-13
7/H
PM-DB27428
18
0.625
(15.875)
0.625
(15.875)
0.28
(7.112)
1:2.5
1:1.79
1-3:4-8
1-3:5-7
11-13:14-18
11-13:15-17
7/H
PM-DB27411
18
0.625
(15.875)
0.625
(15.875)
0.32
(8.128)
2:5
4:7
1-3:4-8
1-3:5-7
11-13:14-18
11-13:15-17
7/H
PM-DB27412
18
0.625
(15.875)
0.625
(15.875)
0.32
(8.128)
1:0.83
1:0.6
1-3:4-8
1-3:5-7
11-13:14-18
11-13:15-17
7/H
PM-DB27414
18
0.625
(15.875)
0.625
(15.875)
0.32
(8.128)
1:1
1:0.707
1-3:4-8
1-3:5-7
11-13:14-18
11-13:15-17
7/H
1553_Trans Rev. U 12/18
7
MIL-STD-1553 / MIL-PRF-21038
DATABUS INTERFACE TRANSFORMERS
ADD "+" ON P/N FOR RoHS COMPLIANCE
Part Number
Total
Pins
Length
inch.
(mm)
Width
inch.
(mm)
Height
inch.
(mm)
Core(s)
Ratio(s)
Ratio (±3%)
1st Core
Terminals
2nd Core
Terminals
Schematic
/ Package
PM-DB27415
18
0.625
(15.875)
0.625
(15.875)
0.32
(8.128)
1.25:1
1.66:1
1-3:4-8
1-3:5-7
11-13:14-18
11-13:15-17
7/H
PM-DB27416
18
0.625
(15.875)
0.625
(15.875)
0.32
(8.128)
2.3:1
3.2:1
4-8:1-3
5-7:1-3
14-18:11-13
15-17:11-13
8/H
PM-DB27417
18
0.625
(15.875)
0.625
(15.875)
0.32
(8.128)
2.12:1
1.5:1
4-8:1-3
5-7:1-3
14-18:11-13
15-17:11-13
7/H
PM-DB27418
18
0.625
(15.875)
0.625
(15.875)
0.32
(8.128)
1:2.5
1:1.79
1-3:4-8
1-3:5-7
11-13:14-18
11-13:15-17
7/H
Single Core, Single Ratio
Part Number
Total
Pins
Length
inch.
(mm)
Width
inch.
(mm)
Height
inch.
(mm)
Core(s)
Ratio(s)
Ratio (±3%)
1st Core
Terminals
2nd Core
Terminals
Schematic
/ Package
PM-DB2706
6
0.35
(8.89)
0.5
(12.7)
0.25
(6.35)
1:1
1-5:6-2
---
2/B
PM-DB2708
6
0.35
(8.89)
0.5
(12.7)
0.25
(6.35)
1:1.66
1-5:6-2
---
2/B
PM-DB2709
6
0.35
(8.89)
0.5
(12.7)
0.25
(6.35)
1:2
1-5:6-2
---
2/B
PM-DB2728
6
0.35
(8.89)
0.5
(12.7)
0.25
(6.35)
1:1.5
1-5:6-2
---
2/B
PM-DB2729
6
0.35
(8.89)
0.5
(12.7)
0.25
(6.35)
1:1.79
1-5:6-2
---
2/B
PM-DB2730
6
0.35
(8.89)
0.5
(12.7)
0.25
(6.35)
1:2.5
1-5:6-2
---
2/B
PM-DB27150
8
0.625
(15.875)
0.625
(15.875)
0.165
(4.19)
1:2.07
1-3:7-5
---
18/AF
PM-DB2759 (1)
6
0.35
(8.89)
0.5
(12.7)
0.182
(4.6228)
1:1.79
1-5:6-2
---
2/U
PM-DB2760 (1)
6
0.35
(8.89)
0.5
(12.7)
0.182
(4.6228)
1:2.5
1-5:6-2
---
2/U
(1) Operating Temperature Range from -40oC to +130oC
1553_Trans Rev. U 12/18
8
MIL-STD-1553 / MIL-PRF-21038
DATABUS INTERFACE TRANSFORMERS
ADD "+" ON P/N FOR RoHS COMPLIANCE
Single Core, Dual Ratio
Part Number
Total
Pins
Length
inch.
(mm)
Width
inch.
(mm)
Height
inch.
(mm)
Core(s)
Ratio(s)
Ratio (±3%)
1st Core
Terminals
2nd Core
Terminals
Schematic
/ Package
PM-DB2701
8
0.625
(15.875)
0.625
(15.875)
0.25
(6.35)
1:1
1:0.707
1-3:4-8
1-3:5-7
---
1/A
PM-DB2701EX
8
0.4
(10.16)
0.4
(10.16)
0.26
(6.604)
1:1
1:0.707
1-3:4-8
1-3:5-7
---
1/G
PM-DB2703
8
0.625
(15.875)
0.625
(15.875)
0.25
(6.35)
1.25:1
1.66:1
1-3:4-8
1-3:5-7
---
1/A
PM-DB2704
8
0.625
(15.875)
0.625
(15.875)
0.25
(6.35)
2.3:1
3.2:1
4-8:1-3
5-7:1-3
---
4/A
PM-DB2710
8
0.625
(15.875)
0.625
(15.875)
0.25
(6.35)
1:2.12
1:1.5
1-3:4-8
1-3:5-7
---
1/A
PM-DB2721
8
0.625
(15.875)
0.625
(15.875)
0.25
(6.35)
1:1
1:0.707
1-3:4-8
1-3:5-7
---
1/A
PM-DB2723
8
0.625
(15.875)
0.625
(15.875)
0.25
(6.35)
1.25:1
1.66:1
1-3:4-8
1-3:5-7
---
1/A
PM-DB2724
8
0.625
(15.875)
0.625
(15.875)
0.25
(6.35)
1:2.12
1:1.5
1-3:4-8
1-3:5-7
---
1/A
PM-DB2725
8
0.625
(15.875)
0.625
(15.875)
0.25
(6.35)
1:2.5
1:1.79
1-3:4-8
1-3:5-7
---
1/A
PM-DB2725R
8
0.625
(15.875)
0.625
(15.875)
0.25
(6.35)
1:2.5
1:1.79
1-3:4-8
1-3:5-7
---
16/AD
PM-DB2725EX
8
0.4
(10.16)
0.4
(10.16)
0.26
(6.604)
1:2.5
1:1.79
1-3:4-8
1-3:5-7
---
1/G
PM-DB2726
8
0.625
(15.875)
0.625
(15.875)
0.25
(6.35)
1:2.5
1:1.79
1-3:4-8
1-3:5-7
---
1/A
PM-DB2755
8
0.4
(10.16)
0.4
(10.16)
0.26
(6.604)
1:3.75
1:2.70
1-3:4-8
1-3:5-7
---
1/G
PM-DB27101
8
0.43
(10.922)
0.43
(10.922)
0.155
(3.937)
1:2.5
1:1.79
1-3:4-8
1-3:5-7
---
1/W
PM-DB2741
8
0.63
(16.002)
0.63
(16.002)
0.155
(3.937)
1:1
1:0.707
1-3:4-8
1-3:5-7
---
1/K
PM-DB2743
8
0.63
(16.002)
0.63
(16.002)
0.155
(3.937)
1.25:1
1.66:1
1-3:4-8
1-3:5-7
---
1/K
PM-DB2744
8
0.63
(16.002)
0.63
(16.002)
0.155
(3.937)
1:2.12
1:1.5
1-3:4-8
1-3:5-7
---
1/K
PM-DB2745
8
0.63
(16.002)
0.63
(16.002)
0.155
(3.937)
1:2.5
1:1.79
1-3:4-8
1-3:5-7
---
1/K
1553_Trans Rev. U 12/18
9
MIL-STD-1553 / MIL-PRF-21038
DATABUS INTERFACE TRANSFORMERS
ADD "+" ON P/N FOR RoHS COMPLIANCE
Isolation Transformers – Unformed Leads
Dual Core, Dual Ratio
Part Number
Total
Pins
Length
inch.
(mm)
Width
inch.
(mm)
Height
inch.
(mm)
Core(s)
Ratio(s)
Ratio (±3%)
1st Core
Terminals
2nd Core
Terminals
Schematic
/ Package
PM-DB27200
16
0.93
(23.622)
0.43
(10.922)
0.155
(3.937)
1:2.5
1:1.79
1-3:16-13
1-3:15-14
5-7:12-9
5-7:11-10
6/T
PM-DB27255
16
0.93
(23.622)
0.63
(16.002)
0.155
(3.937)
1:2.5
1:1.79
1-3:16-13
1-3:15-14
5-7:12-9
5-7:11-10
6/X
PM-DB2741T
16
0.93
(23.622)
0.43
(10.922)
0.155
(3.937)
1:1
1:0.707
1-3:16-13
1-3:15-14
5-7:12-9
5-7:11-10
6/T
PM-DB2743T
16
0.93
(23.622)
0.43
(10.922)
0.155
(3.937)
1.25:1
1.66:1
1-3:16-13
1-3:15-14
5-7:12-9
5-7:11-10
6/T
PM-DB2744T
16
0.93
(23.622)
0.43
(10.922)
0.155
(3.937)
1:2.12
1:1.5
1-3:16-13
1-3:15-14
5-7:12-9
5-7:11-10
6/T
PM-DB2745T
16
0.93
(23.622)
0.43
(10.922)
0.155
(3.937)
1:2.5
1:1.79
1-3:16-13
1-3:15-14
5-7:12-9
5-7:11-10
6/T
Single Core, Dual Ratio
Part Number
Tota
l
Pins
Length
inch.
(mm)
Width
inch.
(mm)
Height
inch.
(mm)
Core(s)
Ratio(s)
Ratio (±3%)
1st Core
Terminals
2nd Core
Terminals
Schematic
/ Package
PM-DB2716
8
0.625
(15.875)
0.625
(15.875)
0.25
(6.35)
1:1
1:0.707
1-3:4-8
1-3:5-7
---
1/E
PM-DB2718
8
0.625
(15.875)
0.625
(15.875)
0.25
(6.35)
1.25:1
1.66:1
1-3:4-8
1-3:5-7
---
1/E
PM-DB2719
8
0.625
(15.875)
0.625
(15.875)
0.25
(6.35)
2.3:1
3.26:1
4-8:1-3
5-7:1-3
---
1/E
PM-DB2720
8
0.625
(15.875)
0.625
(15.875)
0.25
(6.35)
1:2.12
1:1.5
1-3:4-8
1-3:5-7
---
1/E
PM-DB2731
8
0.625
(15.875)
0.625
(15.875)
0.25
(6.35)
1:2.5
1:1.79
1-3:4-8
1-3:5-7
---
1/E
PM-DB27100
8
0.43
(10.922)
0.43
(10.922)
0.155
(3.937)
1:2.5
1:1.79
1-3:4-8
1-3:5-7
---
1/M
PM-DB2741M
8
0.43
(10.922)
0.43
(10.922)
0.155
(3.937)
1:1
1:0.707
1-3:4-8
1-3:5-7
---
1/M
PM-DB2743M
8
0.43
(10.922)
0.43
(10.922)
0.155
(3.937)
1.25:1
1.66:1
1-3:4-8
1-3:5-7
---
1/M
PM-DB2744M
8
0.43
(10.922)
0.43
(10.922)
0.155
(3.937)
1:2.12
1:1.5
1-3:4-8
1-3:5-7
---
1/M
PM-DB2745M
8
0.43
(10.922)
0.43
(10.922)
0.155
(3.937)
1:2.5
1:1.79
1-3:4-8
1-3:5-7
---
1/M
PM-DB2741N
8
0.63
(16.002)
0.63
(16.002)
0.155
(3.937)
1:1
1:0.707
1-3:4-8
1-3:5-7
---
1/N
1553_Trans Rev. U 12/18
10
MIL-STD-1553 / MIL-PRF-21038
DATABUS INTERFACE TRANSFORMERS
ADD "+" ON P/N FOR RoHS COMPLIANCE
Part Number
Tota
l
Pins
Length
inch.
(mm)
Width
inch.
(mm)
Height
inch.
(mm)
Core(s)
Ratio(s)
Ratio (±3%)
1st Core
Terminals
2nd Core
Terminals
Schematic
/ Package
PM-DB2743N
8
0.63
(16.002)
0.63
(16.002)
0.155
(3.937)
1.25:1
1.66:1
1-3:4-8
1-3:5-7
---
1/N
PM-DB2744N
8
0.63
(16.002)
0.63
(16.002)
0.155
(3.937)
1:2.12
1:1.5
1-3:4-8
1-3:5-7
---
1/N
PM-DB2745N
8
0.63
(16.002)
0.63
(16.002)
0.155
(3.937)
1:2.5
1:1.79
1-3:4-8
1-3:5-7
---
1/N
1553_Trans Rev. U 12/18
11
MIL-STD-1553 / MIL-PRF-21038
DATABUS INTERFACE TRANSFORMERS
ADD "+" ON P/N FOR RoHS COMPLIANCE
Coupling Transformers – Surface Mount
Dual Core, Single Ratio
Part Number
Total
Pins
Length
inch.
(mm)
Width
inch.
(mm)
Height
inch.
(mm)
Core(s)
Ratio(s)
Ratio (±3%)
1st Core
Terminals
2nd Core
Terminals
Schematic
/ Package
PM-DB2764
10
0.4
(10.16)
0.4
(10.16)
0.32
(8.128)
1.41:1
1-2:10-9
4-5:7-6
12/AA
Dual Core, Dual Ratio
Part Number
Total
Pins
Length
inch.
(mm)
Width
inch.
(mm)
Height
inch.
(mm)
Core(s)
Ratio(s)
Ratio (±3%)
1st Core
Terminals
2nd Core
Terminals
Schematic
/ Package
PM-DB2742S
16
0.93
(23.622)
0.63
(16.002)
0.155
(3.937)
1.4:1
2:1
1-3:16-13
1-3:15-14
5-7:12-9
5-7:11-10
6/S
Single Core, Dual Ratio
Part Number
Total
Pins
Length
inch.
(mm)
Width
inch.
(mm)
Height
inch.
(mm)
Core(s)
Ratio(s)
Ratio (±3%)
1st Core
Terminals
2nd Core
Terminals
Schematic
/ Package
PM-DB2712
8
0.625
(15.875)
0.625
(15.875)
0.254
(6.4516)
1.4:1
2.1:1
1-3:4-8
1-3:5-7
---
1/D
PM-DB2742L
8
0.63
(16.002)
0.63
(16.002)
0.155
(3.937)
1.4:1
2:1
1-3:4-8
1-3:5-7
---
1/L
1553_Trans Rev. U 12/18
12
MIL-STD-1553 / MIL-PRF-21038
DATABUS INTERFACE TRANSFORMERS
ADD "+" ON P/N FOR RoHS COMPLIANCE
Coupling Transformers – Through Hole
Dual Core, Dual Ratio
Part Number
Total
Pins
Length
inch.
(mm)
Width
inch.
(mm)
Height
inch.
(mm)
Core(s)
Ratio(s)
Ratio (±3%)
1st Core
Terminals
2nd Core
Terminals
Schematic
/ Package
PM-DB2742D
16
0.93
(23.622)
0.63
(16.002)
0.155
(3.937)
1.4:1
2:1
1-3:16-13
1-3:15-14
5-7:12-9
5-7:11-10
6/R
PM-DB27403
18
0.625
(15.875)
0.625
(15.875)
0.25
(6.35)
1.4:1
2:1
1-3:4-8
1-3:5-7
11-13:14-18
11-13:15-17
7/H
PM-DB27423
18
0.625
(15.875)
0.625
(15.875)
0.28
(7.112)
1.4:1
2:1
1-3:4-8
1-3:5-7
11-13:14-18
11-13:15-17
7/H
PM-DB27413
18
0.625
(15.875)
0.625
(15.875)
0.32
(8.128)
1.4:1
2:1
1-3:4-8
1-3:5-7
11-13:14-18
11-13:15-17
7/H
Single Core, Single Ratio
Part Number
Total
Pins
Length
inch.
(mm)
Width
inch.
(mm)
Height
inch.
(mm)
Core(s)
Ratio(s)
Ratio (±3%)
1st Core
Terminals
2nd Core
Terminals
Schematic
/ Package
PM-DB2705
4
0.35
(8.89)
0.5
(12.7)
0.25
(6.35)
1:1.41
1-2:4-3
---
3/C
PM-DB2705EX
4
0.35
(8.89)
0.5
(12.7)
0.25
(6.35)
1:1.41
1-2:3-4
---
5/F
PM-DB2707
6
0.35
(8.89)
0.5
(12.7)
0.25
(6.35)
1:1.41
1-5:6-2
---
2/B
Single Core, Dual Ratio
Part Number
Total
Pins
Length
inch.
(mm)
Width
inch.
(mm)
Height
inch.
(mm)
Core(s)
Ratio(s)
Ratio (±3%)
1st Core
Terminals
2nd Core
Terminals
Schematic
/ Package
PM-DB2702
8
0.625
(15.875)
0.625
(15.875)
0.25
(6.35)
1.4:1
2:1
1-3:4-8
1-3:5-7
---
1/A
PM-DB2722
8
0.625
(15.875)
0.625
(15.875)
0.25
(6.35)
1.41:1
2:1
1-3:4-8
1-3:5-7
---
1/A
PM-DB2742
8
0.63
(16.002)
0.63
(16.002)
0.155
(3.937)
1.4:1
2:1
1-3:4-8
1-3:5-7
---
1/K
1553_Trans Rev. U 12/18
13
MIL-STD-1553 / MIL-PRF-21038
DATABUS INTERFACE TRANSFORMERS
ADD "+" ON P/N FOR RoHS COMPLIANCE
Coupling Transformers – Unformed Leads
Dual Core, Dual Ratio
Part Number
Total
Pins
Length
inch.
(mm)
Width
inch.
(mm)
Height
inch.
(mm)
Core(s)
Ratio(s)
Ratio (±3%)
1st Core
Terminals
2nd Core
Terminals
Schematic
/ Package
PM-DB2742T
16
0.93
(23.622)
0.43
(10.922)
0.155
(3.937)
1.4:1
2:1
1-3:16-13
1-3:15-14
5-7:12-9
5-7:11-10
6/T
Single Core, Dual Ratio
Part Number
Total
Pins
Length
inch.
(mm)
Width
inch.
(mm)
Height
inch.
(mm)
Core(s)
Ratio(s)
Ratio (±3%)
1st Core
Terminals
2nd Core
Terminals
Schematic
/ Package
PM-DB2717
8
0.625
(15.875)
0.625
(15.875)
0.25
(6.35)
1.41:1
2:1
1-3:4-8
1-3:5-7
---
1/E
PM-DB2742M
8
0.43
(10.922)
0.43
(10.922)
0.155
(3.937)
1.4:1
2:1
1-3:4-8
1-3:5-7
---
1/M
PM-DB2742N
8
0.63
(16.002)
0.63
(16.002)
0.155
(3.937)
1.4:1
2:1
1-3:4-8
1-3:5-7
---
1/N
1553_Trans Rev. U 12/18
14
MIL-STD-1553 / MIL-PRF-21038
DATABUS INTERFACE TRANSFORMERS
ADD "+" ON P/N FOR RoHS COMPLIANCE
1553_Trans Rev. U 12/18
15
MIL-STD-1553 / MIL-PRF-21038
DATABUS INTERFACE TRANSFORMERS
ADD "+" ON P/N FOR RoHS COMPLIANCE
1553_Trans Rev. U 12/18
16
MIL-STD-1553 / MIL-PRF-21038
DATABUS INTERFACE TRANSFORMERS
ADD "+" ON P/N FOR RoHS COMPLIANCE
1553_Trans Rev. U 12/18
17
MIL-STD-1553 / MIL-PRF-21038
DATABUS INTERFACE TRANSFORMERS
ADD "+" ON P/N FOR RoHS COMPLIANCE
1553_Trans Rev. U 12/18
18
MIL-STD-1553 / MIL-PRF-21038
DATABUS INTERFACE TRANSFORMERS
ADD "+" ON P/N FOR RoHS COMPLIANCE
1553_Trans Rev. U 12/18
19
MIL-STD-1553 / MIL-PRF-21038
DATABUS INTERFACE TRANSFORMERS
ADD "+" ON P/N FOR RoHS COMPLIANCE
1553_Trans Rev. U 12/18
20
MIL-STD-1553 / MIL-PRF-21038
DATABUS INTERFACE TRANSFORMERS
ADD "+" ON P/N FOR RoHS COMPLIANCE
1553_Trans Rev. U 12/18
21
MIL-STD-1553 / MIL-PRF-21038
DATABUS INTERFACE TRANSFORMERS
ADD "+" ON P/N FOR RoHS COMPLIANCE
Specifications subject to change without notice
FIGURE # AE
3
1
2
8
4
6
7
5
PM-DB27XXX
YYWW
M
P
FIGURE # AF
.500
(12.70)
.625
(15.87)
MAX
.165
(4.19)
MAX
.100 (2.54)
4 PLS
.200 (5.08)
4 PLS
.625
(15.87)
MAX
3
1
2
8
4
6
7
5
.375
(9.52)
MIN
PM-DB27150
YYWW
M
P
0.020x.012
(0.508x.305)
0.185 (4.699)
MAX
0.04
(0.10)
MIN
0.44 (11.18) Ref
0.52 (13.21)
Pin Size = 0.020 x 0.010 (0.508 x 0.254)
0.10 (.254)
8 PLS
.075 (1.905)
4 PLS
0.40
(10.16)
MAX
.15 (3.81)
2 PLS
Φ 0.020 (0.508)
1553_Trans Rev. U 12/18
22
MIL-STD-1553 / MIL-PRF-21038
DATABUS INTERFACE TRANSFORMERS
ADD "+" ON P/N FOR RoHS COMPLIANCE
Specifications subject to change without notice
FIGURE # AG
PM-DB27XXX
YYWW
M
P
M
P
PM-DB27XXX
YYWW
M
PM-DB
27438
YYWW
0.625
(15.87)
MAX
0.100
(2.54)
0.400
(10.16)
0.200
(5.08)
Bottom View
18
17
16
15
14
4
5
6
7
8
13 12 11
1 2 3
0.625
(15.87)
MAX
0.200
(5.08)
14
15
16
17
18
8
7
6
5
4
1 2 3
13 12 11
0.295
(7.493)
MAX
0.140
(3.56)
REF
0.280
(7.11)
TYP
0.165 - .195
(4.19 - 4.953)
0.07 (1.78)
1553_Trans Rev. U 12/18
23
MIL-STD-1553 / MIL-PRF-21038
DATABUS INTERFACE TRANSFORMERS
ADD "+" ON P/N FOR RoHS COMPLIANCE
Cross Reference Listing
PREMIER PART#
X-REF NAME/PART#
PM-DB2701
B-2202
PM-DB2702
B-2203
PM-DB2703
B-2204
PM-DB2704
B-2205
PM-DB2705
B-2206
PM-DB2706
B-2207
PM-DB2707
B-2208
PM-DB2708
B-2209
PM-DB2709
B-2210
PM-DB2710
B-2385
PM-DB2711
B-2386
PM-DB2712
B-2387
PM-DB2713
B-2388
PM-DB2714
B-2389
PM-DB2715
B-2390
PM-DB2716
B-2342
PM-DB2717
B-2343
PM-DB2718
B-2344
PM-DB2719
B-2345
PM-DB2720
B-2391
PM-DB2721
B-3221
PM-DB2722
B-3222
PM-DB2723
B-3223
PM-DB2724
B-3224
PM-DB2725
B-3225
PM-DB2725R
B-3067
PM-DB2726
B-3226
PM-DB2727
B-3227
PM-DB2728
B-3228
PM-DB2729
B-3229
PM-DB2730
B-3230
PM-DB2731
B-3231
PM-DB2775
DSS-3333
PM-DB2776
DSS-3305
PM-DB2777
DSS-3312
PM-DB2779
DSS-3330
PM-DB2792S
MLP-2233
PM-DB2794S
MLP-2030
PREMIER PART#
X-REF NAME/PART#
PM-DB2745L
LPB-5015
PM-DB2741L
LPB-5003
PM-DB2742L
LPB-5002
PM-DB2743L
LPB-5004
PM-DB2744L
LPB-5006
PM-DB2745M
LPB-5014
PM-DB2741M
LPB-5010
PM-DB2742M
LPB-5009
PM-DB2743M
LPB-5011
PM-DB2744M
LPB-5013
PM-DB2742D
TLP-1215
PM-DB2743D
TLP-1212
PM-DB2745D
TLP-1205
PM-DB2742S
TLP-1015
PM-DB2743S
TLP-1012
PM-DB2745S
TLP-1005
PM-DB2742T
TLP-1115
PM-DB2743T
TLP-1112
PM-DB2745T
TLP-1105
PM-DB2761
TSM-2033
PM-DB2762
TSM-2005
PM-DB2763
TSM-2012
PM-DB2764
TSM-2015
PM-DB2765
TSM-2233
PM-DB2771
TSM-2230
PM-DB2766
TSM-2205
PM-DB2767
TSM-2212
PM-DB2768
TSM-2215
PM-DB2745L
LPB-5015
PM-DB27150
LVB-4230
PM-DB27438
TST-9017
1553_Trans Rev. U 12/18
24
MIL-STD-1553 / MIL-PRF-21038
DATABUS INTERFACE TRANSFORMERS
ADD "+" ON P/N FOR RoHS COMPLIANCE
Revision History
Revision
Date
Description of Change
Rev. B
12/16/08
Add PM-DB2785S, PM-DB2790S, PM-DB2791S, PM-DB2795S, PM-DB2798S,
PM-DB27100, PM-DB27101, PM-DB27200, PM-DB27255
Rev. C
11/12/10
Add PM-DB2761, PM-DB2762, PM-DB2763, PM-DB3764, PM-DB2765,
PM-DB2766, PM-DB2767 & PM-DB2768 part numbers, schematic and
physical dimensions. Updated cross ref. list. Reformatted various tables.
Rev. D
04/21/11
Typographical error in physical dimensions for Figure #V corrected.
Rev. E
09/09/11
Repositioned dimension of "S" package closeer to the location of the
measurement.
Rev. F
11/19/12
Clarified peak body temperature for RoHS and Non-RoHS parts. Add
PM-DB27421, PM-DB27422, PM-DB27423, PM-DB27424, PM-DB27425,
PM-DB27426, PM-DB27427, PM-DB27428, PM-DB2750, PM-DB2751,
PM-DB2752, PM-DB2753, PM-DB2754, PM-DB2769, PM-DB2770, PM-
DB2775, PM-DB2776, PM-DB2777.
Add Schematics 13, 14, 15.
Remove Figure #Y, Add Figures #AA, #AB, #AC
Rev. G
04/05/13
Add PM-DB2725R, PM-DB2792S Schematic #16, Figure #AD
Rev. H
06/24/13
Add PM-DB2756 to page 7.
Rev. J
02/14/14
Corrected typographical errors on package Figures #D, #E, #H, #K, #L, #R,
#S, #T, #W, #X, #AB, #AC
Rev. K
06/03/14
Re-organized transformer data presentation into new format. Other than
organization, no changes have been made from previous version.
Rev. L
07/24/14
Correct typo in PM-DB2725EX transformer ratio.
Rev. M
03/6/15
Add PM-DB2725R and PM-DB2792S (missing from Rev. L). Correct terminal
ratios on PM-DB2741S, PM-DB2743S, PM-DB2744S and PM-DB2745S.
Rev. N
05/7/15
Add PM-DB2779 and competitor cross reference.
Rev. O
08/19/15
Correct package reference for PM-DB2705EX from package “C” to package
“F”.
Add PM-DB2793S. Correct typo in Cross Reference Listing table.
Rev. P
05/09/17
Add PM-DB2799S.
Rev. Q
05/22/17
Change PM-DB2799S part number to PM-DB27501S. Add PM-DB27503S.
Rev. R
09/12/17
Add PM-DB2771 and PM-DB2794S. Update Cross Reference Guide.
Rev. S
06/07/18
Update AE package thickness from 3.7mm to 4.699mm.
Add PM-DB27438. Add PM-DB27150.
Update Cross Reference Guide.
Rev. T
10/04/18
Fix typo in PM-DB2770 ratio, from 1:2.69 to 1:2.65.
Rev. U
12/11/18
Fix text truncation in header. “+” indicator for RoHS Compliance missing.