TM
PULSEJACK
Surface Mount 1x1
J0C Application Note
This line of 10/100Base-TX SMT RJ45 1X1 Connector Magnetics
Modules has been specifically designed for the implementation of
a 10Base-T and 100Base-TX transmission over data-grade
unshielded twisted pair cable (UTP-3, 5e and 6).
minimal attenuation and fast rise times to minimize system
level jitter.
The 1X1 SMT RJ45 connectors manufactured by Pulse are
designed to meet all published specifications after exposure to
surface mount soldering temperatures. The SMT are robust
enough to withstand convection and infrared reflow solder
temperatures. Additionally, compliant leads provide excellent
solder-joint reliability with a coplanarity of 0.10mm (0.004")
The connectors provide excellent EMI filtering and are suitable for
adapter card and multiport applications. Pulse has worked closely
with the leading IC manufacturers in providing these 10/100
solutions, thereby assuring compatibility with each transceiver.
The JC0 series meets the stringent open circuit inductance
requirements imposed by IEEE. When an 8mA DC current is
applied across the transformer windings, the transformer will
provide at least 350µH. The transformers used in each module
also provide 1500Vrms minimum isolation, wide bandwidth with
NOTE: Modules are packaged in trays, unless Tape & Reel
is specified. Please add the suffix "T" for Tape & Reel orders
(ex: J0C-0003T). Add the suffix “NL” for RoHS compliant parts
(ex: J0C-0003NL for Trays and J0C-0003NLT for Tape & Reel).
J0C-003/4 Connector
10/100
IC PHY
VCC
0.01 µf
Shield PCB PAD
NC
8
7
6
5
4
3
2
1
NC
8
7
6
RX-
TPOR -
50W * 2
NC
RX 1:1
TX 1:1
5
4
3
2
1
0.01 µf
RJ45
TXCT
TPOR +
TPOP -
RX+
TX-
50W * 2
TX+
TPIP +
Shield PCB PAD
0.01 µf
0.01 µf
Analog GND Chassis GND
NOTE: Connector design not to scale
PCB Layout Recommendations:
1. For maximum EMI suppression (electromagnetic interference)
place the decoupling capacitors adjacent to Vcc and 50Ω
connections.
2. Connections to ground should be as short as possible.
3. Connections between the 10/100 IC and the SMT connector
should be direct (ideally no change in direction) and of
minimum length.
USA 858 674 8100 • Germany 49 7032 7806 0 • Singapore 65 6287 8998 • Shanghai 86 21 54643211/2 • China 86 769 85538070 • Taiwan 886 3 4641811
www.pulseeng.com
8
J409.G (12/07)
