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.
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
Only pure water or alcohol recommended
Part
number
1
B0727-BL_
Line side
Leakage
Turns ratio inductance
2
inductance
3
Capacitance
4
line : chip
±5% (µH)
max (µH)
max (pF)
2
:
1
409.5
6.5
65.0
DCR max (Ohms)
chip side
line side
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
0.039
1,00
0.004 /0,10
0.699 max
17,75
0.512
13,00
1
1
10
0.061
1,55
0.590
14,99
0.050
1,27
0.028
10
0,70
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
Specifications subject to change without notice.
Please check our website for latest information.
Document 414
Revised 10/20/08
© Coilcraft, Inc. 2008
COILCRAFT [ Coilcraft lnc. ]
