HALO Electronics • 1861 Landings Drive, Mountain View, CA 94043 • PH: 650-903-3800

www.haloelectronics.com • info@haloelectronics.com • This Datasheet: fastjack-10-100-tx.pdf Rev. 3/06

FastJack™ Single Port

10/100BASE-TX RJ-45 Connectors

HALO is pleased to offer this complete range of single port Integrated RJ-45 connectors.

The FastJack™ series integrates the high performance of HALO magnetics into an in-

dustry standard connector design. The result is an extremely robust, IEEE802.3 compli-

ant, solution. Single and multi-port FastJacks™ are available for most 10BASE-T and

10/100BASE-TX IC’s.

FastJack™, Full Flexibility Schematics

Turns Ratio

Circuit B

Circuit C

Circuit D

TX

RX

HFJ11-S050E

HFJ11-2250E

HFJ11-2450E

1:1

1:1

HFJ11-S120E

HFJ11-2220E

HFJ11-2420E

2:1

1:1

HFJ11-S141E

HFJ11-2241E

HFJ11-2441E

1:1.41

1:1

HFJ11-S131E

HFJ11-2231E

HFJ11-2431E

1.41:1

1:1

HFJ11-S139E

HFJ11-2239E

HFJ11-2439E

1.25:1

1:1

Recommended Panel Cut-out

Recommended PCB Layout

Mechanical Drawing

Transformer Electrical Specifications @25

°C

Isolation:

1,500 Vrms

OCL @100KHz, 8mA:

350

µH min

CMR (0.1-100MHz):

-40dB typ

Crosstalk (0.1-100MHz):

-40dB min

(Pin 7 ommitted except for HFJ11-LG1G)

10/100BASE-TX

High Frequency, CMR Chokes

1. LED options are also available. Please refer to the LED option data sheet for more information.

2. Please see individual data sheets for complete electrical specifications.

FastJack™ P/N

Circuit

Turns Ratio

HFJ11-LG1GE

E

1:1, 1:1, 1:1, 1:1

RoHS compliant versions are available.

Specify RoHS compliant product by adding the suffix “RL”.