3670

T
PL
IA
N
M
CO
*R
oH
S
Features
Applications
■ Optimized for extended reach
■ Twisted pair coax conversion
■ Fast and easy installation
■
■ Service interoperability and compatibility
■ Triple Play
with most existing NIDs
HPNA
■ xDSL service extension on COAX
■ UL Listed per 1863
■ RoHS compliant*
3670 Series Balance-Unbalance Adapter
Bourns® Model 3670-01 is a high quality impedance matching unit optimized to extend reach/reduce loss on ADSL2+ and VDSL2
circuits where conversion from twisted pair to existing coaxial cabling is required. The 3670-01 is configured with flying leads for
connection of the twisted pair circuit so no new wires are required. Dual mounting flanges provide flexibility in installation.
Characteristics
Twisted Wire Port Impedance.................................................................................................................. 100 Ω
Coax Port Impedance .............................................................................................................................. 75 Ω
Withstanding Voltage ............................................................................................................................... DC 330 V, 2 sec. (Ico=10 mA)
Insulation Resistance .............................................................................................................................. >10 MΩ (DC 250 V)
Insertion Loss (typical)............................................................................................................................. 0.55 dB @ 25 kHz
0.13 dB @ 138 kHz
0.22 dB @ 3.75 MHz
0.28 dB @ 5.8 MHz
0.35 dB @ 8.5 MHz
Return Loss (Typical ................................................................................................................................ 7.83 dB @ 25 kHz
21.47 dB @ 138 kHz
29.49 dB @ 3.75 MHz
32.13 dB @ 5.8 MHz
31.92 dB @ 8.5 MHz
Insertion Loss
0
COAXIAL
Attenuation (dB)
-0.5
TWIST WIRE
50 OHM
75 OHM
VM
3670-01
50 OHM – 100 OHM
-1
-1.5
-2
-2.5
10k
100k
1M
10M
30M
Frequency (Hz)
Return Loss
50
45
100
OHM
COAXIAL
3670-01
TEST
EQUIPMENT
75
OHM
RETURN LOSS
REFERENCE
IMPEDANCE
40
Attenuation (dB)
TWIST WIRE
35
30
25
20
15
10
5
0
10k
100k
1M
Frequency (Hz)
*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.
10M
30M
3670 Series Balance-Unbalance Adapter
Product Dimensions
Installation Diagram
Wiring Schematic for BALUN:
The BALUN is intended to be used in a UL listed NID enclosure
Circuit shows BALUN connected to “DATA” port of the splitter.
155 OR 455
PROTECTOR
22.78
(0.8970)
FROM C.O.
VOICE
DATA
SPLITTER
85122
58.42
(2.3000)
COAXIAL
18.42
(0.7250)
BALUN
PRODUCT LABEL
POTS
TO “DIPLEXER” AND/OR
“SET TOP BOX”
How to Order
DIMENSIONS:
MM
(INCHES)
Stud Mount .......................Part No. 3670-01, 50 units per carton
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
REV. B 11/15
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.
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