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Features
Applications
■ Compliant with IEEE802.3 standards
■ LAN
■ Designed for 10/100/1000 Base-T
■ Ethernet
and PoE++
■ PoE up to 1.2 ADC per center tap
■ RoHS compliant*
■ Power over Ethernet - PoE+
SM51625EL LAN 10/100/1000 Base-T (PoE++) Transformer
Product Dimensions
Electrical Schematic
Turns Ratio (TD:MX) ±5 % .......1CT:1CT
OCL (@100 kHz, 0.1 V,
28 mA, DC Bias) ............... 80 μH min.
Leakage Inductance (TD, MX Short)
@100 kHz, 0.1 V ............. 0.5 μH max.
DCR (TD):....................... 1.4 ohms max.
Cww (TD to MX) @ 100 kHz, 0.1 V
............................................25 pF typ.
Hi-Pot (Pri to Sec)...... 1500 Vrms, 1 mA,
60 seconds
Insertion Loss (TD:MX)
0.3 to 1 MHz ....................-1.1 dB max.
1 to 65 MHz .....................-0.8 dB max.
65 to 100 MHz ....................-1 dB max.
Return Loss (TD, MX w/100 Ω load)
1 to 40 MHz .......................-16 dB min.
40 to 100 MHz ............... -10+20*Log10
(f/80 MHz) dB min.
Cross Talk (Between Each Channel)
1 to 30 MHz .......................-41 dB min.
30 to 60 MHz .....................-37 dB min.
60 to 100 MHz ...................-33 dB min.
Common Mode Rejection (TD:MX)
0.3 to 100 MHz ..................-30 dB min.
PoE++ Current
..............Up to 1.2 ADC per center tap
Operating Temperature Range
..................................-40 °C to +85 °C
Storage Temperature Range
................................-55 °C to +125 °C
Tape & Reel ....................... 350 pcs./reel
CHIP SIDE
17.55 ± 0.25
(0.691 ± .010)
13.97 ± 0.20
(0.550 ± .008)
LINE SIDE
TCT1
TD1+
1
2
1CT : 1CT
24
23
MCT1
MX1+
TD1–
TCT2
TD2+
3
4
5
1CT : 1CT
22
21
20
MX1–
MCT2
MX2+
TD2–
TCT3
TD3+
6
7
8
19
18
17
MX2–
MCT3
MX3+
SM51625L
12.20 ± 0.25
(0.480 ± .010)
16.00 ± 0.25
(0.630 ± .010)
YYWW
1CT : 1CT
TD3– 9
TCT4 10
TD4+ 11
1CT : 1CT
16
15
14
PIN 1
DOT
1.27 ± 0.10
(0.050 ± .004)
0.46 ± 0.05
(0.018 ± .002)
MX3–
MCT4
MX4+
6.00 ± 0.25
(0.236 ± .010)
TD4– 12
13
MX4–
0.25 ± 0.15
(0.010 ± .006)
0.10
R
(.004)
How To Order
SM51625 E L
0.25 ± 0.10
(0.010 ± .004)
0°–8°
Model
1.10 ± 0.15
(0.043 ± .006)
Packaging
E = Tape and Reel (350 pcs./reel)
Termination
L = Tin (RoHS Compliant)
Recommended Layout
Moisture Sensitivity Level ..................... 1
................. N/A
290
13.97
TYP.
(0.550)
1.27
(0.050)
TYP.
1.90
(0.075)
TYP.
16.60
(0.654)
TYP.
10 SEC. MAX.
TP
250
Temperature (°C)
230
TL
217
L
+6 °C / SEC.
MAX.
170
125
110
–6 °C / SEC.
MAX.
0.76
TYP.
(0.030)
+6 °C / SEC.
MAX.
DIMENSIONS:
APPROX. 120 SEC.
50
MM
(INCHES)
60~150 SEC.
25
0
0
PREHEAT
60
120
180
FLUX
ACTIVATION
240
REFLOW
300
360
420
COOLING
Time (Seconds)
WARNING Cancer and Reproductive Harm
www.P65Warnings.ca.gov
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
Specifications are subject to change without notice. Users should verify actual device performance in their specific
applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the
last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
SM51625EL LAN 10/100/1000 Base-T (PoE+) Transformer
330
(12.992)
DIA.
24.00 ± 0.10
(0.945 ± 0.004)
1.75 ± 0.10
(0.069 ± 0.004)
2.00 ± 0.10
(0.079 ± 0.004)
DIA.
1.50 +0.10/-0.00
(0.059 + 0.004/-0.000)
6.00 ± 0.10
(0.236 ± 0.004)
DIA.
2.00
(.079)
MIN.
14.20 ± 0.10
(0.559 ± 0.004)
28.40 ± 0.10
(1.118 ± 0.004)
18.50 ± 0.10
(0.728 ± 0.004)
32.00 ± 0.30
(1.260 ± 0.012)
4.00 ± 0.10
(0.157 ± 0.004)
17.20 ± 0.10
(0.677 ± 0.004)
8°
12.54 ± 0.10
(0.494 ± 0.004)
1.50 ± 0.10
DIA.
(0.059 + 0.004)
0.40 ± 0.10
(0.016 ± 0.004)
6.25 ± 0.10
(0.246 ± 0.004)
7.05 ± 0.10
(0.278 ± 0.004)
8.00 ± 0.10
(0.315 ± 0.004)
DIMENSIONS:
MM
(INCHES)
USER DIRECTION OF FEED
QUANTITY: 350 PCS. PER REEL
Tel: +886-2 2562-4117 • Email: asiacus@bourns.com
EMEA: Tel: +36 88 520 390 • Email: eurocus@bourns.com
The Americas: Tel: +1-951 781-5500 • Email: americus@bourns.com
www.bourns.com
REV. 05/18
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
Legal Disclaimer Notice
This legal disclaimer applies to purchasers and users of Bourns® products manufactured by or on behalf of Bourns, Inc. and
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Unless otherwise expressly indicated in writing, Bourns® products and data sheets relating thereto are subject to change
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