
Part
Number
Turns
Ratio
Inductance
(μH MIN)
Return Loss
(dB MIN)
300 kHz to 1 MHz: 18
1 MHz to 11 MHz: 20
11 MHz to 30 MHz: 16
300 kHz to 20 MHz: 20
Insertion Loss*
(dB MAX)
Line
Longitudinal
Balance
(dB TYP)
200 kHz: 60
11 MHz: 42
100 MHz: 30
200 kHz: 60
11 MHz: 50
100 MHz: 40
200 kHz: 60
11 MHz: 50
100 MHz: 40
CM Rejection
(dB TYP)
10 MHz: 35
30 MHz: 33
100 MHz: 25
10 MHz: 35
30 MHz: 33
100 MHz: 30
10 MHz: 35
30 MHz: 33
100 MHz: 30
Isolation
Voltage
(Vrms)
Impedance
(
)
B4020 (THT)
1CT:1CT
190
200 kHz to 1 MHz: 0.8
100
3000
1 MHz to 30 MHz: 0.7
BX4055 (SMT)
1:1
190
200 kHz to 400 kHz: .75
100
1500
20 MHz to 30 MHz: 18
400 kHz to 30 MHz: .50
B4021 (SMT)
1CT:1CT
300 kHz to 1 MHz: 15
1 MHz to 20 MHz: 20
20 MHz to 30 MHz: 17
BX4056 (SMT)
1:1.16
190
200 kHz to 400 kHz: 0.75
135
1500
400 kHz to 30 MHz: 0.60
NOTES - Surge Voltage Capability:
Metallic: 800 Vpeak 10/560 μsec. Long.: 2400 Vpeak 10/700 μsec.
B4020
is designed to meet the requirements for supplementary isolation according
to IEC950. Common Mode Chokes to reduce common mode ingress from AM Broadcast or HAM Radios are available. See data sheet
B912
for parts
B4001
and
B4003.
Mechanicals
VDSL TRANSFORMERS
For Use with Broadcom and Texas
Instruments Chipset
Electrical Specifications @ 25°C — Operating Temperature -40°C to +85°C
For use with Broadcom's BCM6315 transceiver chip
B4020, B4021 and BX4055: for use with Texas
Instrument's TNETD800 chipset
Excellent return loss and balance
Surface mount or through hole package
Schematics
Weight
...............1.2 grams
Tube
......................60/tube
Notes: Leads are 24 AWG solderable.
Unused pins not provided.
.250 MAX
.130
3,30
.200
5,08
.100
2,54
5
3
1
6
4
2
DB4020
.350 MAX
.500 MAX
.400
10,16
B4020
B4021/BX4055/BX4056
B981.A (9/02)
Printed on recycled paper. 2002, Pulse Engineering, Inc.
Dimensions:
Inches
Unless otherwismm
0,25
Weight
...............0.6 grams
Tube
......................70/tube
Dimensions:
Inches
Unless otherwismm
0,25
For More Information :
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Performance warranty of products offered on this data sheet is limited to the parameters specified. Data is subject to change without notice. Other brand and product
names mentioned herein may be products and/or registered trademarks of their respective owners.
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