ERNI ModJack
Modular Jacks with integrated magnetics – 10 Base T, 10/100 Base TX
ERNI presents the ERNI ModJack™ line of integrated
magnetic modular jacks.
These connectors provide signal conditioning and increase
emissions performance. By integrating into the connector
magnetic filtering components which are usually found as
surface mount components on a PCB, increased PCB
space and reduced manufacturing steps are realized. ERNI
ModJacks are specifically designed to be drop-in
replacements for traditional modular jacks.
Integrated magnetic packages are designed to meet FCC
and IEEE 802.3 requirements for performance and voltage
isolation. Variable sizes and magnetic configurations allow
for a wide variety of applications. ERNI ModJacks are
available in standard PCB layouts and come in single,
ganged, and stacked port versions.
Features and Benefits
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www.erni.com
Catalog MCMJ75f
04/05
Transformer filtered
Eliminates NEXT
Direct replacement for board filters
CAT 5E replacement
Drop-in replacement for standard jacks
Saves PCB space
Patented construction under US Patent #5,687,233
ERNI Modular Jacks with integrated magnetics
M2A01 Electrical Circuit
10 Base T – M2A01
Electrical Specifications @ 25º C
TURNS RATIO
(P1–P2:J1-J2)
(P3-P6:J3–J6)
OCL (100KHz, 0.1Vrms)
(P1–P2)
(P3–P6)
DCR (P1–P2, P3–P6)
RETURN LOSS
5-10MHz
CROSSTALK (0.1–10MHz)
CMR (0.1–10MHz)
ISOLATION
1CT:1 ±3%
1CT:1 ±3%
100µH typ
100µH typ
0.9Ω max
-15dB min
-40dB min
-40dB min
1,500Vrms
M3B01 Electrical Circuit
10/100 Base TX (Low Cost) – M3B01
Electrical Specifications @ 25º C
TURNS RATIO
(P1–P2:J1-J2)
(P3-P6:J3–J6)
OCL (100KHz, 0.1Vrms, 8mA)
(P1–P2, P3–P6)
DCR (P1–P2, P3–P6)
INSERTION LOSS
0.1–100MHz
RETURN LOSS
0.5–30MHz
40MHz
50MHz
60–80Mhz
CROSSTALK (0.1–100MHz)
COMMON MODE REJECTION
0.1-30MHz
30-60MHz
60-100MHz
ISOLATION
1CT:1 ±3%
1CT:1 ±3%
350µH min
0.9Ω max
-1.1dB max
-18dB min
-15.5dB min
-13.6dB min
-12dB min
-40dB typ
-50dB typ
-40dB typ
-35dB typ
1,500Vrms
2
www.erni.com
Catalog MCMJ75f
04/05
A policy of continuous improvement is followed and the right
to alter any published data without notice is reserved.
ERNI Modular Jacks with integrated magnetics
M3C01 Electrical Circuit
10/100 Base TX – M3C01
Electrical Specifications @ 25º C
TURNS RATIO
(P1–P2:J1-J2)
(P3-P6:J3–J6)
OCL (100KHz, 0.1Vrms, 8mA)
(P1–P2, P3–P6)
DCR (P1–P2, P3–P6)
INSERTION LOSS
0.1–100MHz
RETURN LOSS
0.5–30MHz
40MHz
50MHz
60–80Mhz
CROSSTALK (0.1–100MHz)
COMMON MODE REJECTION
0.1-30MHz
30-60MHz
60-100MHz
ISOLATION
1CT:1CT ±3%
1CT:1CT ±3%
350µH min
0.9Ω max
-1.1dB max
-18dB min
-15.5dB min
-13.6dB min
-12dB min
-40dB typ
-50dB typ
-40dB typ
-35dB typ
1,500Vrms
M3D01 Electrical Circuit
10/100 Base TX – M3D01
PCB
CABLE
Electrical Specifications @ 25º C
TURNS RATIO
(P1–P2:J1-J2)
(P3-P6:J3–J6)
OCL (100KHz, 0.1 Vrms, 8mA)
(P1–P2, P3–P6)
DCR (P1–P2, P3–P6)
INSERTION LOSS
0.1–100 MHz
RETURN LOSS
0.5–30 MHz
40 MHz
50 MHz
60–80 Mhz
CROSSTALK (0.1–100 MHz)
COMMON MODE REJECTION
0.1-30MHz
30-60MHz
60-100MHz
ISOLATION
1CT:1CT ±3%
1CT:1CT ±3%
350 µH min
0.9
Ω
max
-1.1dB max
-18 dB min
-15.5 dB min
-13.6 dB min
-12 dB min
-40 dB typ
-50dB typ
-40dB typ
-35dB typ
1,500Vrms
P1
CT P4
P2
P3
CT P5
P6
J1
J2
J3
J6
GND P8
1000pF/2KV 4X 75 W
J4,5
J7,8
www.erni.com
Catalog MCMJ75f
04/05
3
ERNI Modular Jacks with integrated magnetics
Dimensions & PCB Layout
1x1 (1 Port)
Dimensions & PCB Layout
1x2 (2 Port)
3.20±0.20
[.126±.008]
15.88
[.625]
21.39
[.842]
31.12 [1.225]
13.97 [.550]
3.20±0.20
[.126±.008]
13.80
[.543]
13.63
[.537]
1
8
1
8
1
8
11.43±0.13
[.450±.005]
10.89
[.429]
25.40
[1.000]
10.89
[.429]
1.27 [.050]
0.64 [.025]
2.54 [.100]
8
24.13 [.950]
12.70
[.500]
ALL TOLERANCES
±0.05
UNLESS NOTED
2.54 [.100]
1.27
[.050]
1
3.05 [.120]
2.54 [.100]
8.89 [.350]
Ø1.6±0.07
[Ø.061±.003] X2
Ø3.2±0.07
[Ø.125±.003] X2
11.43
[.450]
Ø0.89±0.07
[Ø.035±0.003] X16
Ø3.25±0.07
[Ø.128±0.003] X2
Ø1.60±0.07
[Ø.063±0.003] X3
2.79
[.110]
1
8
8
1
2.54
[.100]
Ø0.89±0.07
[Ø.035±.003] X8
10.16
[.400]
21.39
[.842]
RECOMMENDED PANEL CUTOUT
0.38±0.10
[.015±.004]
16.66
[.656]
14.72
[.580]
25.40
[1.000]
RECOMMENDED PANEL CUTOUT
32.22±0.20
[1.269±.008]
2.79
[.110]
0.38±0.10
[.015±.004]
PCB EDGE
LP
TOP OF PCB
LP
Ordering Information
Electrical
Circuit
M2A01
M3B01
M3C01
M3D01
1x1 (1 Port)
Turns Ratio
TX
1:1
1:1
1:1
1:1
RX
1:1
1:1
1:1
1:1
Part
Number
203150
203151
203152
133723
Ordering Information
Electrical
Circuit
M2A01
M3C01
M3D01
1x2 (2 Port)
Turns Ratio
TX
1:1
1:1
1:1
RX
1:1
1:1
1:1
14.89
[.586]
Part
Number
203153
203155
203156
4
www.erni.com
Catalog MCMJ75f
04/05
A policy of continuous improvement is followed and the right
to alter any published data without notice is reserved.
3.68 [.145]
15.49
[.610]
TOL
±0.05
[.002] UNLESS NOTED
8.89 [.350]
10.16 [.400]
ADI Reference Circuit
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