Features

• Low profile (6.0mm) and light weight (3.0 g) 10/100Base-T Dual

Port isolation transformer modules facilitate pick and place

compatability and speed of placement

• Dual port modules meet requirements of IEEE 802.3u and

ANSIX3.263

• Consistent and reliable coplanarity

• Manufactured in an ISO-9001:2000, TS-16949:2002

and ISO-14001:2004 certified Talema facility

• Fully RoHS compliant and meets lead free reflow

level J-STD-020C

Dual Port SMD Auto MDI/MDIX 10/100Base-T Isolation Transformer Modules

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Applications

Talema 10/100BaseT Dual transformer modules contain transmit and receive isolation transformers to maintain consistant

wave shape and suppression of common mode noise while providing equipment isolation per IEEE 802.3. High impedance

common mode quad chokes for additional EMI suppression have been added on some models as required for FCC and

CISPR 22 Class B certification.

Quality and consistency is guaranteed through 100% testing of the specified parameters for primary inductance, leakage

inductance, turns ratio, DC resistance and interwinding capacitance.This ensures that the return loss and pulse wave shape

requirements can be fully maintained. Additionally, all parts are tested for 1500V minimum isolation.

Schematic

Dimensions

Tolerance: ±0.010 (0.25) unless specified otherwise

0° - 8°

0.228

(5,80)

0.606

(15.40)

0.630

(16,00)

0.551

(14,00)

0.450

(11.43)

9 x 0.05(1,27)

0.078

(1.985)

TALEMA IN

WK / YR

TEXD-400N

.020 x .012

(0.50 x 0.30)

20 x

Suggested Pad Layout

0.661

(16.80)

0.030

(0.77)

0.091

(2.30)

.050

(1.27)

0.450

(11.43)

Germany: Int.+49 89 - 841 00-0 • Ireland: Int.+35 374 - 954 8666 • Czech Rep: Int.+420 377 - 338 351 • India: Int.+91 427 - 244 1325

http://www.talema-nuvotem.com

Surface coplanarity will be 0.004 (0.01) maximum

N

TX

RX

TX

RX

20

19 18 17

16 15

14 13 12

11

1

2

3 4

5 6

7

8

9

10

Electrical Specifications @ 25°C

Inductance: 350µH minimum @ 100kHz, 100mV, 8mA

Leakage Inductance: 0.4µH @ 1MHz

C

20pF typical

Minimum isolation voltage: 1500 Vrms

Operating Temperature Range: -40°C to +85°C

Storage Temperature: -40°C to +125°C

Standard packing: Tape and reel

(10-06) Communications\Networks\TEXD 20 Pin