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Features
Applications
■ Compliant with IEEE802.3 standards
■ VoIP
■ Designed for 10/100 Base-Tx and PoE
■ Power over Ethernet - PoE
■ RoHS compliant*
SM51108PEL LAN 10/100 Base-Tx VoIP Transformer (PoE) Modules
Electrical Specifications @ 25 °C
Turns Ratio (±3 %) ...................1CT:1CT
OCL (@100 kHz,
0.1 V, 8 mA, DC Bias) ..... 350 µH min.
Leakage Inductance
(@100 kHz, 0.1 V
with 1-2-3-6-7-8 Short)
9-11 = 14-16 .................... 0.5 µH max.
Cw/w @ 100 kHz, 0.1 V .......35 pF max.
DCR
1-3 = 6-8........................ 0.8 ohm max.
9-11 = 14-16 .................. 1.1 ohm max.
Insertion Loss
1-100 MHz.......................-1.2 dB max.
Return Loss (@ 100 Ohms)
1-30 MHz...........................-16 dB min.
40 MHz ..............................-14 dB min.
50 MHz ..............................-13 dB min.
60-80 MHz.........................-12 dB min.
Cross Talk
60 MHz ..............................-40 dB min.
100 MHz ............................-35 dB min.
DCMRR
30 MHz ..............................-43 dB min.
60 MHz ..............................-37 dB min.
100 MHz ............................-33 dB min.
PoE Current ...................... Up to 320 mA
Hi-Pot Test .............................1500 Vrms
Operating Temperature Range
..................................-40 °C to +85 °C
Storage Temperature Range
................................-25 °C to +125 °C
Packaging Specifications
Tape & Reel ....................... 600 pcs./reel
Product Dimensions
SM51108 P E L
8.89
(0.350)
1.27
(0.050)
BOURNS
SM51108PL
YYWW
6.90
(0.272)
PIN 1
1.27
DOT (0.050)
7.10
(0.280)
9.30
(0.366)
10.50
(0.413)
0.46
(0.018)
0.76
(0.030)
5.65
(0.222)
DIMENSIONS:
MM
(INCHES)
TOLERANCES:
0.25 ± 0.13
(0.010 ± 0.005)
0.30
(0.012)
0°–8°
0.70 ± 0.15
(0.028 ± 0.006)
Electrical Schematic
TD+ 1
16 TX1+
CT 2
TD- 3
RD+ 6
14 TX115 CT
11 RX1+
CT 7
RD- 8
How To Order
Recommended Layout
12.80
(0.504)
8.89
(0.350)
9
RX-
10 CT
Model
Construction
P = Potted
Packaging
E = Tape and Reel (600 pcs./reel)
Termination
L = Tin (RoHS Compliant)
Asia-Pacific: Tel: +886-2 2562-4117 • Fax: +886-2 2562-4116
EMEA: Tel: +36 88 520 390 • Fax: +36 88 520 211
The Americas: Tel: +1-951 781-5500 • Fax: +1-951 781-5700
www.bourns.com
*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.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
±0.25
(±0.010)
3312 - 2 mm
SM51108PEL
LANSMD
10/100Trimming
Base-Tx VoIP Potentiometer
Transformer (PoE) Modules
Soldering Profile
• Ramp-up rate = 3 °C/sec. max.
• Ramp-down rate = 6 °C/sec. max.
tp
TP
CRITICAL ZONE
T L TO TP
RAMP-UP
• TL = 217 °C
• tL = 60-150 sec.
• Tp = 250 ±3 °C
• Time within 5 °C of actual Peak Temp
(tp)2 = 20~40 sec.
• Ts min = 150 °C
• Ts max = 200 °C
• Ts min to Ts max = 60-180 sec., 25 °C to
Peak Temperature = 8 min. max.
TL
Temperature
tL
TS MAX.
RAMP-DOWN
TS MIN.
ts
PREHEAT
25 °C
8 MINS./248.9 °C
t 25 °C TO PEAK
Refer to IPC/JEDEC J-STD020D standard.
Time
Packaging Specifications
DIMENSIONS:
330
(12.992)
DIA.
MM
(INCHES)
REEL
1.75
(0.069
2.00
(0.079)
1.50
DIA.
(0.059)
0.40
(.016)
BOURNS
SM51108PL
YYWW
11.50
(.453)
4.00
(0.157)
16.00
(.630)
24.00
(.945)
11.42
(.450)
8°
1.50
DIA.
(0.059)
6.52
(.257)
USER DIRECTION OF FEED
QUANTITY: 600 PCS. PER REEL
REV. 05/15
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.