82
Catalog 1307191 Dimensions are in millimeters Dimensions are shown for USA: 1-800-522-6752 South America: 55-11-2103-6000
Revised 3-07 and inches unless otherwise reference purposes only. Canada: 1-905-470-4425 Hong Kong: 852-2735-1628
specified. Values in brackets Specifications subject Mexico: 01-800-733-8926 Japan: 81-44-844-8013
www.tycoelectronics.com are standard equivalents. to change. C. America: 52-55-1106-0803 UK: 44-8706-080-208
RF Coax Connectors
Decoupled Connectors
Product Facts
■Built-in chip capacitors
filter high-frequency noise
to panel ground
■PC board mounting with
vertical and standard or
low-profile right-angle
configurations
■Cable mount bulkhead BNC
version available
■Drop-in replacement for
Tyco Electronics standard
BNC printed circuit board
connectors
■One-piece design and
robotic capacity to reduce
assembly time
Tyco Electronics capaci-
tively decoupled connectors
provide the fast, better way
to reduce noise and reduce
ground loops on coaxial
interconnections. The high-
frequency noise generated
by fast rise times can cause
both false triggering of
circuits as well as emissions
that can be radiated or
conducted outside the
equipment. Such emissions
can interfere with nearby
equipment. Ground loops
are also a problem for net-
worked systems. Ground
loops are caused when two
interconnected units are at
different voltage potentials.
The typical way to handle
such EMI and ground loop
problems is to decouple
the cable shield from the
ground panel by soldering
a ceramic disk capacitor
between the cable shield
and the panel. The capaci-
tor shunts high-frequency
noise to ground. While
effective, this approach
is time consuming and
expensive.
The Capacitively Decoupled
connector has built-in chip
capacitors. These capaci-
tors establish the electrical
contact between the outer
shield and a clip. This clip
provides a short electrical
path between the capaci-
tors and panel. As a result,
high-frequency noise is
effectively shunted to
ground, while the DC path
is blocked.
The connectors offer com-
patibility in design and
manufacture. The same
footprint and dimensional
envelope make them a
drop-in replacement for
Tyco Electronics standard
BNC or TNC printed circuit
board connectors. In addi-
tion, they can be robotically
picked and placed for high-
speed automated assembly
to pc boards.
Product Specification
108-1263 — BNC Decoupled PCB
Press-Fit Connection
108-1269 — BNC Decoupled PCB
Connectors
108-1490 — BNC Decoupled Cable
Mount