J409.N (05/13)

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pulseelectronics.com

PulseJack™

Surface Mount 1x1

JV 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).

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 minimal attentuation 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 0.10 (0.004”).

Note: Modules are packaged in trays, unless Tape & Reel is

specified. Please add the suffix “

T” for Tape & Reel orders

(ex: JVO006121

T). Add the suffix “NL” for RoHS compliant

parts (ex: JV006I21NL

T for Trays and JV006I21NLT for

Tape & Reel).

JV006I21 Connector

PCB Layout Recommendations:

1. For maximum EMI suppression (electromagnetic interference)

3. Connections between the 10/100 IC and the

place the decoupling capacitors adjacent to VCC and 50

Ω

SMT connector should be direct (ideally no change

connections.

in direction) and of minimum length.

2. Connections to ground should be as short as possible.