B4008 Datasheet, PDF (1/1 Pages) Pulse A Technitrol Company – VDSL TRANSFORMERS For Use with Broadcom

VDSL TRANSFORMERS
For Use with Broadcom^® BCM 6010/6020
Supports speeds up to 25.92 Mbps
Provides two-wire to four-wire conversion
Surface mount or through hole package
Electrical Specifications @ 25°C — Operating Temperature 0°C to 70°C
Part
Number
Turns Ratio _DCR
Trans. Rec. ^(MAX)
Return Loss
(dB MIN)
Insertion Loss*
(dB MAX)
Transhybrid
Loss (dB MIN)
Longitudinal
Balance
(dB MIN)
Isolation
Voltage
(Vrms)
B4008 (THT) _2:1
B4025 (SMT)
1:1 0.5 Ω
138 kHz to 1 MHz: 13.5
1 MHz to 20 MHz: 20
138 kHz to 20 MHz: 0.5
138 kHz to 1 MHz: 30
1 MHz to 20 MHz: 25
138 kHz to 300 kHz: 60
300 kHz to 1 MHz: 50
1 MHz to 20 MHz: 30
2000
NOTE: 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.
Surge Voltage Capability: Metallic: 800 Vpeak 10/560 µsec. Long.: 2400 Vpeak 10/700 µsec.
Surge over the Extended Temperature Range: Insertion Loss can increase to 1 dB. Return Loss can drop to 7 dB from 138 kHz to 300 kHz, and 12 dB from 300 kHz to 1 MHz.
Mechanicals
B4008
1.000
25,40
MAX
B4008
Date Code
Country of Origin
.405
10,29
MAX
.300
7,62
MAX
.120
3,05
.100
.200
2,54
5,08
B4025
.100
2,54
B4025
Date Code Country of Origin
.505 _MAX
12,83
.700
17,78
.540
13,72
.100
2,54
.700
17,78
1.005 _MAX
25,53
.040 .100
1,02 2,54
SUGGESTED PAD LAYOUT
.395
10,03
.235 _MAX
5,97
0° – 8°
.300
7,62
DIA
13X
.020
0,51
Weight...............2.8 grams
Tube......................20/tube
Dimensions: ^Inches
mm
Unless otherwise specified, all tolerances are ± ^.010
0,25
For More Information :
.004/0,10
16 SURFACES
.012
0,30
16
x
.040
1,02
Schematics
B4008 ₁
2:1
19
2
17
4
5
1:1
6
14
7
9
13
10
12
Pin 13: Internal connection only
B4025
2:1
1
16
2
15
4
5
1:1
12
11
13
7
10
8
9
Pin 10: Internal connection only
UNITED STATES UNITED KINGDOM
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U.S.A.
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DISTRIBUTOR
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9/F, Phase 2, Tai Sang
Shatin Warehouse Centre
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Fotan, Shatin, Hong Kong
TEL: [phone]
FAX: [phone]
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.
Printed on recycled paper. ©2003, Pulse Engineering, Inc.
B925.A (11/03)