TEW4921 데이터 시트보기 (PDF) - Filtran LTD

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TEW4921

CEPT /T1 Output Transformer

Filtran LTD 

CEPT /T1

Output Transformer

TEW4921 is designed and ap-

proved to be used as a transmit

transformer with the Mitel

MT89760/-60B and MT89790/-

90B devices in T1 and CEPT ap-

plications.

Complies with ANSI T1.408 and

CCITT I.431., with regards to

Longitudinal Balance.

TEW4921-2 is designed for

MT89790B when operating from

a single 5 Vdc supply.

Typical applications are:

• Primary rate ISDN network

nodes.

• PBX or computer to

T1/CEPT Digital Trunks.

• TDM Multiplexers.

Fully encapsulated in epoxy.

BABT certified for reinforced in-

sulation to EN60950 & EN41003.

Cert #: CR/T/0052

TEW4921

MECHANICAL

6

Line side

4

TEW4921 & -1

1

2 Device

3

6

WHITE

DOT

AT PIN 1

Line side

5

4

TEW4921-2

ELECTRICAL SPECIFICATIONS

Impedance

DCR

(Ohms)

Turns ratio

Inductance (mH)

Pulse Mask

Longitud. Bal. (dB)

(1 - 3)

(6 - 4)

(1-2):(2-3):(6 -4)

(1-2):(2-3):(6 -5)

(6 - 4)

50 - 1544 KHz

Dielectric Strength, (Vrms)

Temperatures Operating

Storage

0o to 50o C

-20o to 80o C

TEW4921

100 & 120 Ω

3.5

0.35

1 : 1 : 0.53

n/a

> 1.0

T1 & CEPT

> 40 dB

4000 V

TEW4921-1

75 Ω

3.5

0.25

1 : 1 : 0.39

n/a

> 0.57

CEPT

> 40 dB

4000 V

Filtran Limited

229 Colonnade Road, Nepean, Ontario, Canada. K2E 7K3,

Tel : (613) 226 1626 Fax : (613) 226 7124

1

2 Device

3

TEW4921-2

75/120 Ω

3.5

0.35

1 : 1 : 1.37

1 : 1 : 1.12

> 1.5

CEPT

> 40 dB

4000 V

2-15

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