Document 414
ADSL2 Transformer
For Broadcom BCM6348
Router Chip
• Designed for use with the Broadcom BCM6348 router chip
• Low leakage inductance and 1875 V interwinding isolation
• Evaluated and approved by UL to meet 60950 under a
Supplementary Insulation System with a working voltage of
250 Vrms, 353.5 V peak.
Core material
Ferrite
Terminations
RoHS tin-silver over tin over nickel over phos bronze.
Other terminations available at additional cost.
Weight
6.2 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)
Mean Time Between Failures (MTBF)
26,315,789 hours
Packaging
175 per 13″ reel Plastic tape: 32 mm wide,
0.42 mm thick, 28 mm pocket spacing, 12.9 mm pocket depth
PCB washing
Tested with pure water or alcohol only. For other solvents,
see Doc787_PCB_Washing.pdf
Part
number
1
B0727-BL_
Turns ratio
line :chip
2
:
1
Line side
inductance
2
±5% (µH)
409.5
Leakage
inductance
3
max (µH)
6.5
DCR max (Ohms)
Capacitance
4
max (pF)
chip side
line side
65.0
0.645 (1-4)
0.645 (2-5)
0.284 (10-7)
0.371 ((9-6)
Longitudinal
balance
min (dB)
50.0 (1.1 MHz)
THD
max (dB)
–80
1. When ordering, please specify
termination
and
packaging
coded:
B0727-BLD
Termination: L
= RoHS tin-silver over tin over nickel over phos bronze.
Special order:
T
= RoHS tin-silver-copper (95.5/4/0.5) or
S
= non-RoHS tin-lead (63/37).
Packaging: D
= 13″ machine-ready reel. EIA-481 embossed plastic tape
(175 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.
2. Inductance measured at 10 kHz, 0.1 Vrms, 0 Adc with windings connected in series.
3. Leakage inductance measured at 100 kHz, 0.1 Vrms, 0 Adc from pins 1 to 5 with
pins 4 and 2 connected and all chip side pins shorted.
4. Capacitance measured at 100 kHz, 0.1 Vrms, 0 Adc from chip side to line side.
5. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Dot above pin1
0.500 max
12,70
0.004 /0,10
0.699 max
17,75
0.512
13,00
1
0.039
1,00
1
10
0.061
1,55
0.590
14,99
0.050
1,27
10
0,70
0.028
0.098
2,50
Line 4
side 2
7 Chip
9 side
1
Recommended
Land Pattern
0.098
2,50
0.530 max
13,46
5
6
5
6
Dimensions are in
inches
mm
US
+1-847-639-6400 sales@coilcraft.com
UK
+44-1236-730595 sales@coilcraft-europe.com
Taiwan
+886-2-2264 3646 sales@coilcraft.com.tw
China
+86-21-6218 8074 sales@coilcraft.com.cn
Singapore
+ 65-6484 8412 sales@coilcraft.com.sg
Document 414
Revised 10/20/08
© Coilcraft Inc. 2013
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
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