ETH1-230

Document 538-1
“PoE Plus” Magnetics
The ETH1-230L_1 is developed for high power PoE applications in support of the goals of the IEEE 802.3at-2009
standard. This module is designed for 2-pair cabling plants
at 30 Watts and two modules may be used for 4-pair
cabling in 60 Watt applications. It exceeds the return loss
requirements of Gbit Ethernet.
It has a minimum open-circuit inductance of 350 µH at an
offset current of 35 mA at 25°C ambient temperature, and
can handle 22.5 mA minimum dc offset at 85°C. Typical
temperature rise from 25°C ambient is 7°C with 800 mA
and 10°C with 1000 mA dc current applied to one center
tap of each isolation transformer. Winding to winding isolation is 1500 Vrms. Ambient temperature range: –40°C to
+85°C with 1 A current.
Request free evaluation samples by contacting Coilcraft or
visiting www.coilcraft.com.
1. When ordering, please specify packaging code:
ETH1-230LD
Packaging:D
=13″ machine-ready reel. EIA-481 embossed plastic tape.
Factory order only, not stocked (400 parts per full reel).
B= Less than full reel. In tape, but not machine ready.
To have a leader and trailer added ($25 charge), use
code letter D instead.
TX+
6
9 TX+
TX–
TXCT
RXCT
RX+
5
1:1
11
4
3
2
12
TX–
TXCT
RXCT
1:1
13
14
Cable or chipset side
Core material Ferrite
Terminations RoHS compliant tin-silver-copper over tin over nickel
over phos bronze
Weight 3.0 g
Ambient temperature –40°C to +85°C
Storage temperature Component: –40°C to +85°C.
Tape and reel packaging: –40°C to +80°C
Resistance to soldering heat Max three 40 second reflows at
+260°C, parts cooled to room temperature between cycles
Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C /
85% relative humidity)
Failures in Time (FIT) / Mean Time Between Failures (MTBF)
60 per billion hours / 16,666,667 hours, calculated per Telcordia SR-332
Packaging 400/13″ reel; Plastic tape: 32 mm wide, 0.5 mm thick,
PCB washing Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See Doc787_PCB_Washing.pdf.
Chipset or cable side
10
RX+
RX–
RX– 1
Dimensions are in
inches
mm
Document 538-1 Revised 11/02/11
Document 538-2
“PoE Plus” Magnetics
L vs Offset Current
Return Loss
1200
0
10
20
Return Loss (dB)
Inductance (µH)
1000
800
600
85°C
400
70°C
25°C
30
40
50
60
70
80
200
90
0
0
5
10
15
20
25
30
35
100
40
1
Current (mA)
10
100
1000
100
1000
Frequency (MHz)
802.3af specification:
18 dB min from 1 MHz to 40 MHz
16 dB min at 50 MHz
12 dB min at 80 MHz
10 dB min at 100 MHz
Crosstalk
0
0
10
10
20
20
30
30
Crosstalk (dB)
Insertion Loss (dB)
Insertion Loss
40
50
60
40
50
60
70
70
80
80
90
90
100
100
1
10
100
Frequency (MHz)
802.3af specification:
1.0 min dB from 0.1 MHz to 100 MHz
1.2 min dB at 125 MHz
1000
1
10
Frequency (MHz)
802.3af specification:
45 dB min at 30 MHz
40 dB min at 60 MHz
33 dB min at 100 MHz
Document 538-2 Revised 11/02/11
Document 538-2
“PoE Plus” Magnetics
Differential to Common Mode Rejection
0
Common Mode Rejection (dB)
10
20
30
40
50
60
70
80
90
100
1
10
100
Frequency (MHz)
802.3af specification:
50 dB min from 1 MHz to 10 MHz
30 dB min from 10 MHz to 125 MHz
20 dB min from 125 MHz to 500 MHz
1000
Differential to Common Mode Rejection (dB)
Common Mode Rejection
0
10
20
30
40
50
60
70
80
90
100
1
10
100
Frequency (MHz)
1000
802.3af specification:
45 dB min at 30 MHz
40 dB min at 60 MHz
35 dB min at 100 MHz
Document 538-3 Revised 11/02/11