ISDN U-INTERFACE TRANSFORMER
E & E Magnetic Products Limited
Small compact footprint
Models designed for leading transceiver ICs
Meets ANSI T1.601-1992 and ETSI ETR 080
standards for longitudinal balance, linearity and return
loss
Minimum Isolation voltage: 1500Vrms
SMT Package, For 2B1Q and 4B3T Coding
Standard Temperature Range
E
LECTRICAL
S
PECIFICATION
@25°C
Part
Number
821-00440
821-00442
821-00443
821-00441
821-00444
Turns Ratio
Line : Chip
(± 2%)
1.65CS:1CT
1.25CS:1CT
2CS:1CS
1.25CS:1CT
1.32CS:1
OCL
Line Side
(mH Typ)
13-18
25.5-30.5
13.5-16.5
11.9-16.1
7.5-8.3
DCR
Line Side
(Ω Max)
14.00
15.66
7.00
6.40
3.20
DCR
Chip Side
(Ω Max)
7.00
10.65
3.50
4.40
2.50
Idc
(mA)
50
40
50
50
55
Return
Loss
(dB Min)
10 kHz- 25 kHz
20
20
20
15 kHz- 50 kHz
16
15 kHz- 50 kHz
16
Longitudinal
Balance
(dB Min)
281 Hz- 40 kHz
55
55
55
20 kHz- 150 kHz
40
15 kHz- 50 kHz
40
SM10-2
SM10-2
Package
SM10-2
SM10-1
SM10-1
M
ECHANICAL
D
IMENSIONS
Package: EP13-SM10-1
Package: EP13-SM10-2
.530
13.46 MAX
.100
2.54
.394
10.00
1
5
10
6
.098
2.50
.705
17.91
EE
821-0044x
(DATE)
10
6
.695
17.65 MAX
821-0044x
EE
(DATE)
1
5
.051
1.30
RECOMMENDED
PAD LAYOUT
.028
±
.003
0.71
±0
.08
.004-.020
0.10-0.51
.485
12.32 MAX
0-8º
REFERENCE OR
GAUGE PLANE
.098
±
.010
2.50
±0
.25
.394
±
.010
10.00
±0
.25
.040
±
.010
1.02
±0
.25
Note :
All dimensions are specified in
inches
mm with higher precedence in inches.
Weight (in gram)
Tape & Reel
:
:
6.7 typ.
160 / reel
Unless otherwise specified, all tolerances are
±
.010 .
0.25
Unit B10, 3/F., 94 Tokwawan Road, Kowloon, Hong Kong • Tel: (852) 2954 3333 • Fax: (852) 2954 3304
1
Preliminary
TE204(01)
Released in 03/10
ISDN U-INTERFACE TRANSFORMER
E & E Magnetic Products Limited
SMT Package, For 2B1Q and 4B3T Coding
Standard Temperature Range
S
CHEMATICS
821-00440/ -00441
1
9
Primary
(Line Side)
2
7
4
6
5
Secondary
(Chip Side)
821-00442
1
10
Primary
(Line Side)
2
8
4
6
5
Secondary
(Chip Side)
821-00443
1
10
Primary
(Line Side)
2
4
9
7
Secondary
(Chip Side)
5
6
Unit B10, 3/F., 94 Tokwawan Road, Kowloon, Hong Kong • Tel: (852) 2954 3333 • Fax: (852) 2954 3304
2
Preliminary
TE204(01)
Released in 03/10
ISDN U-INTERFACE TRANSFORMER
E & E Magnetic Products Limited
SMT Package, For 2B1Q and 4B3T Coding
Standard Temperature Range
S
CHEMATICS
821-00444
1
9
Primary
(Line Side)
2
4
6
5
Secondary
(Chip Side)
FOR MORE INFORMATION
,
PLEASE CONTACT
H
EADQUARTER
Unit B10, 3/F., Merit Industrial Centre,
94 Tokwawan Road, Kowloon,
Hong Kong
Tel: (852) 2954 3333
Fax: (852) 2954 3304
Email:
eempl@eleceltek.com
Website: http://www.eleceltek.com
Information herein is for reference only and subject to change without notice. It does not constitute any representation, warranty or
commitment of the company in respect of the products in any aspect. All logos, brands and product names mentioned herein are
trademarks or registered trademarks of their respective owners. The company does not assume any liability arising out of the application
or use of any product or circuit described herein. Copyrights 2003, E & E Magnetic Products Limited.
Unit B10, 3/F., 94 Tokwawan Road, Kowloon, Hong Kong • Tel: (852) 2954 3333 • Fax: (852) 2954 3304
3
Preliminary
TE204(01)
Released in 03/10
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